KomikTap parser #40

Add asserts
[MangaInUa] Fix chapters list #43
2022-09-07 13:06:34 +03:00 · 2022-09-07 13:05:23 +03:00 · 2022-09-03 10:48:35 +03:00 · 2022-09-02 16:42:24 +03:00 · 2022-09-02 16:42:10 +03:00 · 2022-09-02 18:36:00 +07:00
50 changed files with 1670 additions and 396 deletions
--- a/.github/ISSUE_TEMPLATE/report_issue.yml
+++ b/.github/ISSUE_TEMPLATE/report_issue.yml
@@ -25,27 +25,7 @@ body:
          2. Second step
          3. Issue here
    validations:
-      required: true
-
-  - type: textarea
-    id: expected-behavior
-    attributes:
-      label: Expected behavior
-      placeholder: |
-        Example:
-          "This should happen..."
-    validations:
-      required: true
-
-  - type: textarea
-    id: actual-behavior
-    attributes:
-      label: Actual behavior
-      placeholder: |
-        Example:
-          "This happened instead..."
-    validations:
-      required: true
+      required: false

  - type: input
    id: kotatsu-version
@@ -54,7 +34,7 @@ body:
      description: |
        You can find your Kotatsu version in **Settings → About**.
      placeholder: |
-        Example: "3.3.1"
+        Example: "3.3"
    validations:
      required: true

@@ -67,7 +47,7 @@ body:
      placeholder: |
        Example: "Android 12"
    validations:
-      required: true
+      required: false

  - type: textarea
    id: other-details
@@ -80,15 +60,6 @@ body:
    id: acknowledgements
    attributes:
      label: Acknowledgements
-      description: Your issue will be closed if you haven't done these steps.
      options:
        - label: I have searched the existing issues and this is a new ticket, **NOT** a duplicate or related to another open issue.
-          required: true
-        - label: I have written a short but informative title.
-          required: true
-        - label: I have updated the app to version **[3.3.1](https://github.com/KotatsuApp/Kotatsu/releases/latest)**.
-          required: true
-        - label: If this is an issue with the app itself, I should be opening an issue in the [app repository](https://github.com/KotatsuApp/Kotatsu/issues/new/choose).
-          required: true
-        - label: I will fill out all of the requested information in this form.
          required: true
--- a/.github/ISSUE_TEMPLATE/request_feature.yml
+++ b/.github/ISSUE_TEMPLATE/request_feature.yml
@@ -25,15 +25,6 @@ body:
    id: acknowledgements
    attributes:
      label: Acknowledgements
-      description: Your issue will be closed if you haven't done these steps.
      options:
        - label: I have searched the existing issues and this is a new ticket, **NOT** a duplicate or related to another open issue.
-          required: true
-        - label: I have written a short but informative title.
-          required: true
-        - label: If this is an issue with the app itself, I should be opening an issue in the [app repository](https://github.com/KotatsuApp/Kotatsu/issues/new/choose).
-          required: true
-        - label: I have updated the app to version **[3.3.1](https://github.com/KotatsuApp/Kotatsu/releases/latest)**.
-          required: true
-        - label: I will fill out all of the requested information in this form.
          required: true
--- a/.github/ISSUE_TEMPLATE/request_source.yml
+++ b/.github/ISSUE_TEMPLATE/request_source.yml
@@ -41,17 +41,10 @@ body:
    id: acknowledgements
    attributes:
      label: Acknowledgements
-      description: Your issue will be closed if you haven't done these steps.
      options:
        - label: I have searched the existing issues and this is a new ticket, **NOT** a duplicate or related to another open issue.
          required: true
-        - label: I have written a title with source name.
-          required: true
-        - label: I have updated the app to version **[3.3.1](https://github.com/KotatsuApp/Kotatsu/releases/latest)**.
-          required: true
        - label: I have checked that the source does not already exist on the app.
          required: true
        - label: I have checked that the source does not already exist by searching the [GitHub repository](https://github.com/KotatsuApp/kotatsu-parsers) and verified it does not appear in the code base.
-          required: true
-        - label: I will fill out all of the requested information in this form.
          required: true
--- a/.gitignore
+++ b/.gitignore
@@ -75,4 +75,5 @@ build/
 .idea/**/ktlint.xml
 .idea/codeStyles/

-src/test/resources/cookies.txt
+src/test/resources/cookies.txt
+local.properties
--- a/.idea/runConfigurations/TestsAndReport.xml
+++ b/.idea/runConfigurations/TestsAndReport.xml
@@ -1,7 +0,0 @@
-<component name="ProjectRunConfigurationManager">
-  <configuration default="false" name="TestsAndReport" type="CompoundRunConfigurationType">
-    <toRun name="MangaParserTest" type="GradleRunConfiguration" />
-    <toRun name="kotatsu-parsers [generateTestsReport]" type="GradleRunConfiguration" />
-    <method v="2" />
-  </configuration>
-</component>
--- a/README.md
+++ b/README.md
@@ -2,48 +2,50 @@

 Library that provides manga sources.

-[![](https://jitpack.io/v/nv95/kotatsu-parsers.svg)](https://jitpack.io/#nv95/kotatsu-parsers) ![Kotlin](https://img.shields.io/github/languages/top/nv95/kotatsu-parsers) ![License](https://img.shields.io/github/license/nv95/Kotatsu) [![Discord](https://img.shields.io/discord/898363402467045416?color=5865f2&label=discord)](https://discord.gg/NNJ5RgVBC5)
+[![](https://jitpack.io/v/KotatsuApp/kotatsu-parsers.svg)](https://jitpack.io/#KotatsuApp/kotatsu-parsers) ![Kotlin](https://img.shields.io/github/languages/top/KotatsuApp/kotatsu-parsers) ![License](https://img.shields.io/github/license/KotatsuApp/Kotatsu) [![Discord](https://img.shields.io/discord/898363402467045416?color=5865f2&label=discord)](https://discord.gg/NNJ5RgVBC5)

 ### Usage

 1. Add it in your root build.gradle at the end of repositories:

-	```groovy
-	allprojects {
-	    repositories {
-		    ...
-		    maven { url 'https://jitpack.io' }
-	    }
-	}
-	```
+   ```groovy
+   allprojects {
+	   repositories {
+		   ...
+		   maven { url 'https://jitpack.io' }
+	   }
+   }
+   ```

-2. Add the dependency 
+2. Add the dependency

-	For Java/Kotlin project:
+   For Java/Kotlin project:
    ```groovy
    dependencies {
-        implementation("com.github.nv95:kotatsu-parsers:$parsers_version")
+        implementation("com.github.KotatsuApp:kotatsu-parsers:$parsers_version")
    }
    ```
-	
-    For Android project:
+
+   For Android project:
    ```groovy
    dependencies {
-        implementation("com.github.nv95:kotatsu-parsers:$parsers_version") {
+        implementation("com.github.KotatsuApp:kotatsu-parsers:$parsers_version") {
            exclude group: 'org.json', module: 'json'
        }
    }
    ```
-   
-	See for versions at [JitPack](https://jitpack.io/#nv95/kotatsu-parsers) 
-	
+
+   See for versions at [JitPack](https://jitpack.io/#KotatsuApp/kotatsu-parsers)
+
 3. Usage in code

-	```kotlin
-	val parser = MangaSource.MANGADEX.newParser(mangaLoaderContext)
-	```
- 
-	`mangaLoaderContext` is an implementation of the `MangaLoaderContext` class.
-    See [Android](https://github.com/nv95/Kotatsu/blob/devel/app/src/main/java/org/koitharu/kotatsu/core/parser/MangaLoaderContextImpl.kt) and [Non-Android](https://github.com/nv95/kotatsu-dl/blob/master/src/main/kotlin/org/koitharu/kotatsu_dl/env/MangaLoaderContextImpl.kt) implementation examples.
+   ```kotlin
+   val parser = MangaSource.MANGADEX.newParser(mangaLoaderContext)
+   ```

-	Note that the `MangaSource.LOCAL` and `MangaSource.DUMMY` parsers cannot be instantiated.
+   `mangaLoaderContext` is an implementation of the `MangaLoaderContext` class.
+   See [Android](https://github.com/KotatsuApp/Kotatsu/blob/devel/app/src/main/java/org/koitharu/kotatsu/core/parser/MangaLoaderContextImpl.kt)
+   and [Non-Android](https://github.com/KotatsuApp/kotatsu-dl/blob/master/src/main/kotlin/org/koitharu/kotatsu_dl/env/MangaLoaderContextImpl.kt)
+   implementation examples.
+
+   Note that the `MangaSource.LOCAL` and `MangaSource.DUMMY` parsers cannot be instantiated.
--- a/build.gradle
+++ b/build.gradle
@@ -20,6 +20,7 @@ compileKotlin {
 		freeCompilerArgs += [
 				'-opt-in=kotlin.RequiresOptIn',
 				'-opt-in=kotlin.contracts.ExperimentalContracts',
+				'-opt-in=kotlinx.coroutines.ExperimentalCoroutinesApi',
 				'-opt-in=org.koitharu.kotatsu.parsers.InternalParsersApi',
 		]
 	}
@@ -53,19 +54,19 @@ afterEvaluate {
 }

 dependencies {
-	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.6.3'
+	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.6.4'
 	implementation 'com.squareup.okhttp3:okhttp:4.10.0'
 	implementation 'com.squareup.okio:okio:3.2.0'
-	implementation 'org.jsoup:jsoup:1.15.1'
+	api 'org.jsoup:jsoup:1.15.2'
 	implementation 'org.json:json:20220320'
 	implementation 'androidx.collection:collection-ktx:1.2.0'

 	ksp project(':kotatsu-parsers-ksp')

-	testImplementation 'org.junit.jupiter:junit-jupiter-api:5.8.2'
-	testImplementation 'org.junit.jupiter:junit-jupiter-engine:5.8.2'
-	testImplementation 'org.junit.jupiter:junit-jupiter-params:5.8.2'
-	testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.3'
+	testImplementation 'org.junit.jupiter:junit-jupiter-api:5.9.0'
+	testImplementation 'org.junit.jupiter:junit-jupiter-engine:5.9.0'
+	testImplementation 'org.junit.jupiter:junit-jupiter-params:5.9.0'
+	testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.4'
 	testImplementation 'io.webfolder:quickjs:1.1.0'
 }

--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/MangaLoaderContext.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/MangaLoaderContext.kt
@@ -1,12 +1,14 @@
 package org.koitharu.kotatsu.parsers

 import okhttp3.*
+import okhttp3.HttpUrl.Companion.toHttpUrl
 import okhttp3.MediaType.Companion.toMediaType
 import okhttp3.RequestBody.Companion.toRequestBody
 import org.json.JSONObject
 import org.jsoup.HttpStatusException
 import org.koitharu.kotatsu.parsers.config.MangaSourceConfig
 import org.koitharu.kotatsu.parsers.exception.GraphQLException
+import org.koitharu.kotatsu.parsers.exception.NotFoundException
 import org.koitharu.kotatsu.parsers.model.MangaSource
 import org.koitharu.kotatsu.parsers.util.await
 import org.koitharu.kotatsu.parsers.util.parseJson
@@ -23,7 +25,7 @@ abstract class MangaLoaderContext {
 	 * @param url
 	 * @param headers an additional headers for request, may be null
 	 */
-	suspend fun httpGet(url: String, headers: Headers? = null): Response {
+	suspend fun httpGet(url: HttpUrl, headers: Headers? = null): Response {
 		val request = Request.Builder()
 			.get()
 			.url(url)
@@ -33,6 +35,11 @@ abstract class MangaLoaderContext {
 		return httpClient.newCall(request.build()).await().ensureSuccess()
 	}

+	suspend fun httpGet(url: String, headers: Headers? = null): Response {
+		return httpGet(url.toHttpUrl(), headers)
+	}
+
+
 	/**
 	 * Do a HEAD http request to specific url
 	 * @param url
@@ -140,12 +147,10 @@ abstract class MangaLoaderContext {

 	abstract fun getConfig(source: MangaSource): MangaSourceConfig

-	private fun Response.ensureSuccess() = apply {
+	private fun Response.ensureSuccess(): Response {
 		val exception: Exception? = when (code) { // Catch some error codes, not all
-			404,
-			in 500..599,
-			-> HttpStatusException(message, code, request.url.toString())
-
+			404 -> NotFoundException(message, request.url.toString())
+			in 500..599 -> HttpStatusException(message, code, request.url.toString())
 			else -> null
 		}
 		if (exception != null) {
@@ -156,5 +161,6 @@ abstract class MangaLoaderContext {
 			}
 			throw exception
 		}
+		return this
 	}
 }
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/MangaParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/MangaParser.kt
@@ -3,6 +3,8 @@ package org.koitharu.kotatsu.parsers
 import androidx.annotation.CallSuper
 import androidx.annotation.VisibleForTesting
 import okhttp3.Headers
+import okhttp3.HttpUrl
+import org.jsoup.nodes.Element
 import org.koitharu.kotatsu.parsers.config.ConfigKey
 import org.koitharu.kotatsu.parsers.exception.ParseException
 import org.koitharu.kotatsu.parsers.model.*
@@ -69,7 +71,7 @@ abstract class MangaParser @InternalParsersApi constructor(val source: MangaSour
 	 * @param offset starting from 0 and used for pagination.
 	 * @param query search query
 	 */
-	suspend fun getList(offset: Int, query: String): List<Manga> {
+	open suspend fun getList(offset: Int, query: String): List<Manga> {
 		return getList(offset, query, null, defaultSortOrder)
 	}

@@ -81,7 +83,7 @@ abstract class MangaParser @InternalParsersApi constructor(val source: MangaSour
 	 * @param tags genres for filtering, values from [getTags] and [Manga.tags]. May be null or empty
 	 * @param sortOrder one of [sortOrders] or null for default value
 	 */
-	suspend fun getList(offset: Int, tags: Set<MangaTag>?, sortOrder: SortOrder?): List<Manga> {
+	open suspend fun getList(offset: Int, tags: Set<MangaTag>?, sortOrder: SortOrder?): List<Manga> {
 		return getList(offset, null, tags, sortOrder ?: defaultSortOrder)
 	}

@@ -117,7 +119,10 @@ abstract class MangaParser @InternalParsersApi constructor(val source: MangaSour
 	)
 	open fun getFaviconUrl() = "https://${getDomain()}/favicon.ico"

-	open suspend fun parseFavicons(): Favicons {
+	/**
+	 * Parse favicons from the main page of the source`s website
+	 */
+	open suspend fun getFavicons(): Favicons {
 		return FaviconParser(context, getDomain(), headers).parseFavicons()
 	}

@@ -137,6 +142,12 @@ abstract class MangaParser @InternalParsersApi constructor(val source: MangaSour
 		return subdomain + "." + domain.removePrefix("www.")
 	}

+	fun urlBuilder(): HttpUrl.Builder {
+		return HttpUrl.Builder()
+			.scheme("https")
+			.host(getDomain())
+	}
+
 	/**
 	 * Create a unique id for [Manga]/[MangaChapter]/[MangaPage].
 	 * @param url must be relative url, without a domain
@@ -174,8 +185,8 @@ abstract class MangaParser @InternalParsersApi constructor(val source: MangaSour
 	}

 	@InternalParsersApi
-	protected fun parseFailed(message: String? = null): Nothing {
-		throw ParseException(message, null)
+	protected fun Element.parseFailed(message: String? = null): Nothing {
+		throw ParseException(message, ownerDocument()?.location() ?: baseUri(), null)
 	}

 	@InternalParsersApi
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/PagedMangaParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/PagedMangaParser.kt
@@ -0,0 +1,50 @@
+package org.koitharu.kotatsu.parsers
+
+import org.koitharu.kotatsu.parsers.model.Manga
+import org.koitharu.kotatsu.parsers.model.MangaSource
+import org.koitharu.kotatsu.parsers.model.MangaTag
+import org.koitharu.kotatsu.parsers.model.SortOrder
+import org.koitharu.kotatsu.parsers.util.Paginator
+
+@InternalParsersApi
+abstract class PagedMangaParser(
+	source: MangaSource,
+	pageSize: Int,
+	searchPageSize: Int = pageSize,
+) : MangaParser(source) {
+
+	protected val paginator = Paginator(pageSize)
+	protected val searchPaginator = Paginator(searchPageSize)
+
+	override suspend fun getList(offset: Int, query: String): List<Manga> {
+		return getList(searchPaginator, offset, query, null, defaultSortOrder)
+	}
+
+	override suspend fun getList(offset: Int, tags: Set<MangaTag>?, sortOrder: SortOrder?): List<Manga> {
+		return getList(paginator, offset, null, tags, sortOrder ?: defaultSortOrder)
+	}
+
+	@InternalParsersApi
+	@Deprecated("You should use getListPage for PagedMangaParser", level = DeprecationLevel.HIDDEN)
+	final override suspend fun getList(
+		offset: Int,
+		query: String?,
+		tags: Set<MangaTag>?,
+		sortOrder: SortOrder,
+	): List<Manga> = throw UnsupportedOperationException("You should use getListPage for PagedMangaParser")
+
+	abstract suspend fun getListPage(page: Int, query: String?, tags: Set<MangaTag>?, sortOrder: SortOrder): List<Manga>
+
+	private suspend fun getList(
+		paginator: Paginator,
+		offset: Int,
+		query: String?,
+		tags: Set<MangaTag>?,
+		sortOrder: SortOrder,
+	): List<Manga> {
+		val page = paginator.getPage(offset)
+		val list = getListPage(page, query, tags, sortOrder)
+		paginator.onListReceived(offset, page, list.size)
+		return list
+	}
+}
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/exception/ContentUnavailableException.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/exception/ContentUnavailableException.kt
@@ -0,0 +1,3 @@
+package org.koitharu.kotatsu.parsers.exception
+
+class ContentUnavailableException(message: String) : RuntimeException(message)
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/exception/NotFoundException.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/exception/NotFoundException.kt
@@ -0,0 +1,9 @@
+package org.koitharu.kotatsu.parsers.exception
+
+import org.jsoup.HttpStatusException
+import java.net.HttpURLConnection
+
+class NotFoundException(
+	message: String,
+	url: String,
+) : HttpStatusException(message, HttpURLConnection.HTTP_NOT_FOUND, url)
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/exception/ParseException.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/exception/ParseException.kt
@@ -3,6 +3,7 @@ package org.koitharu.kotatsu.parsers.exception
 import org.koitharu.kotatsu.parsers.InternalParsersApi

 class ParseException @InternalParsersApi @JvmOverloads constructor(
-	message: String?,
+	val shortMessage: String?,
+	val url: String,
 	cause: Throwable? = null,
-) : RuntimeException(message, cause)
+) : RuntimeException("$shortMessage at $url", cause)
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/BatoToParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/BatoToParser.kt
@@ -5,9 +5,10 @@ import org.json.JSONArray
 import org.json.JSONObject
 import org.jsoup.nodes.Element
 import org.koitharu.kotatsu.parsers.MangaLoaderContext
-import org.koitharu.kotatsu.parsers.MangaParser
 import org.koitharu.kotatsu.parsers.MangaSourceParser
+import org.koitharu.kotatsu.parsers.PagedMangaParser
 import org.koitharu.kotatsu.parsers.config.ConfigKey
+import org.koitharu.kotatsu.parsers.exception.ParseException
 import org.koitharu.kotatsu.parsers.model.*
 import org.koitharu.kotatsu.parsers.util.*
 import java.nio.charset.StandardCharsets
@@ -17,11 +18,12 @@ import javax.crypto.Cipher
 import javax.crypto.spec.IvParameterSpec
 import javax.crypto.spec.SecretKeySpec

-private const val PAGE_SIZE = 60
-private const val PAGE_SIZE_SEARCH = 20
-
@MangaSourceParser("BATOTO", "Bato.To")
-internal class BatoToParser(override val context: MangaLoaderContext) : MangaParser(MangaSource.BATOTO) {
+internal class BatoToParser(override val context: MangaLoaderContext) : PagedMangaParser(
+	source = MangaSource.BATOTO,
+	pageSize = 60,
+	searchPageSize = 20,
+) {

 	override val sortOrders: Set<SortOrder> = EnumSet.of(
 		SortOrder.NEWEST,
@@ -35,17 +37,15 @@ internal class BatoToParser(override val context: MangaLoaderContext) : MangaPar
 		arrayOf("bato.to", "mto.to", "mangatoto.com", "battwo.com", "batotwo.com", "comiko.net", "batotoo.com"),
 	)

-	override suspend fun getList(
-		offset: Int,
+	override suspend fun getListPage(
+		page: Int,
 		query: String?,
 		tags: Set<MangaTag>?,
 		sortOrder: SortOrder,
 	): List<Manga> {
 		if (!query.isNullOrEmpty()) {
-			return search(offset, query)
+			return search(page, query)
 		}
-		val page = (offset / PAGE_SIZE) + 1
-
 		@Suppress("NON_EXHAUSTIVE_WHEN_STATEMENT")
 		val url = buildString {
 			append("https://")
@@ -71,8 +71,8 @@ internal class BatoToParser(override val context: MangaLoaderContext) : MangaPar

 	override suspend fun getDetails(manga: Manga): Manga {
 		val root = context.httpGet(manga.url.toAbsoluteUrl(getDomain())).parseHtml()
-			.getElementById("mainer") ?: parseFailed("Cannot find root")
-		val details = root.selectFirst(".detail-set") ?: parseFailed("Cannot find detail-set")
+			.requireElementById("mainer")
+		val details = root.selectFirstOrThrow(".detail-set")
 		val attrs = details.selectFirst(".attr-main")?.select(".attr-item")?.associate {
 			it.child(0).text().trim() to it.child(1)
 		}.orEmpty()
@@ -105,7 +105,7 @@ internal class BatoToParser(override val context: MangaLoaderContext) : MangaPar
 		val scripts = context.httpGet(fullUrl).parseHtml().select("script")
 		for (script in scripts) {
 			val scriptSrc = script.html()
-			val p = scriptSrc.indexOf("const images =")
+			val p = scriptSrc.indexOf("const imgHttpLis =")
 			if (p == -1) continue
 			val start = scriptSrc.indexOf('[', p)
 			val end = scriptSrc.indexOf(';', start)
@@ -113,19 +113,19 @@ internal class BatoToParser(override val context: MangaLoaderContext) : MangaPar
 				continue
 			}
 			val images = JSONArray(scriptSrc.substring(start, end))
-			val batoJs = scriptSrc.substringBetweenFirst("batojs =", ";")?.trim(' ', '"', '\n')
-				?: parseFailed("Cannot find batojs")
-			val server = scriptSrc.substringBetweenFirst("server =", ";")?.trim(' ', '"', '\n')
-				?: parseFailed("Cannot find server")
-			val password = context.evaluateJs(batoJs)?.removeSurrounding('"')
-				?: parseFailed("Cannot evaluate batojs")
-			val serverDecrypted = decryptAES(server, password).removeSurrounding('"')
+			val batoPass = scriptSrc.substringBetweenFirst("batoPass =", ";")?.trim(' ', '"', '\n')
+				?: script.parseFailed("Cannot find batoPass")
+			val batoWord = scriptSrc.substringBetweenFirst("batoWord =", ";")?.trim(' ', '"', '\n')
+				?: script.parseFailed("Cannot find batoWord")
+			val password = context.evaluateJs(batoPass)?.removeSurrounding('"')
+				?: script.parseFailed("Cannot evaluate batoPass")
+			val args = JSONArray(decryptAES(batoWord, password))
 			val result = ArrayList<MangaPage>(images.length())
 			repeat(images.length()) { i ->
 				val url = images.getString(i)
 				result += MangaPage(
 					id = generateUid(url),
-					url = if (url.startsWith("http")) url else "$serverDecrypted$url",
+					url = url + "?" + args.getString(i),
 					referer = fullUrl,
 					preview = null,
 					source = source,
@@ -133,13 +133,13 @@ internal class BatoToParser(override val context: MangaLoaderContext) : MangaPar
 			}
 			return result
 		}
-		parseFailed("Cannot find images list")
+		throw ParseException("Cannot find images list", fullUrl)
 	}

 	override suspend fun getTags(): Set<MangaTag> {
 		val scripts = context.httpGet(
 			"https://${getDomain()}/browse",
-		).parseHtml().select("script")
+		).parseHtml().selectOrThrow("script")
 		for (script in scripts) {
 			val genres = script.html().substringBetweenFirst("const _genres =", ";") ?: continue
 			val jo = JSONObject(genres)
@@ -154,13 +154,12 @@ internal class BatoToParser(override val context: MangaLoaderContext) : MangaPar
 			}
 			return result
 		}
-		parseFailed("Cannot find gernes list")
+		throw ParseException("Cannot find gernes list", scripts[0].baseUri())
 	}

 	override fun getFaviconUrl(): String = "https://styles.amarkcdn.com/img/batoto/favicon.ico?v0"

-	private suspend fun search(offset: Int, query: String): List<Manga> {
-		val page = (offset / PAGE_SIZE_SEARCH) + 1
+	private suspend fun search(page: Int, query: String): List<Manga> {
 		val url = buildString {
 			append("https://")
 			append(getDomain())
@@ -175,7 +174,7 @@ internal class BatoToParser(override val context: MangaLoaderContext) : MangaPar
 	private fun getActivePage(body: Element): Int = body.select("nav ul.pagination > li.page-item.active")
 		.lastOrNull()
 		?.text()
-		?.toIntOrNull() ?: parseFailed("Cannot determine current page")
+		?.toIntOrNull() ?: body.parseFailed("Cannot determine current page")

 	private suspend fun parseList(url: String, page: Int): List<Manga> {
 		val body = context.httpGet(url).parseHtml().body()
@@ -186,11 +185,11 @@ internal class BatoToParser(override val context: MangaLoaderContext) : MangaPar
 		if (activePage != page) {
 			return emptyList()
 		}
-		val root = body.getElementById("series-list") ?: parseFailed("Cannot find root")
+		val root = body.requireElementById("series-list")
 		return root.children().map { div ->
-			val a = div.selectFirst("a") ?: parseFailed()
+			val a = div.selectFirstOrThrow("a")
 			val href = a.attrAsRelativeUrl("href")
-			val title = div.selectFirst(".item-title")?.text() ?: parseFailed("Title not found")
+			val title = div.selectFirstOrThrow(".item-title").text()
 			Manga(
 				id = generateUid(href),
 				title = title,
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/BlogTruyenParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/BlogTruyenParser.kt
@@ -0,0 +1,248 @@
+package org.koitharu.kotatsu.parsers.site
+
+import androidx.collection.ArrayMap
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import org.json.JSONArray
+import org.jsoup.nodes.Document
+import org.jsoup.nodes.Element
+import org.koitharu.kotatsu.parsers.MangaLoaderContext
+import org.koitharu.kotatsu.parsers.MangaSourceParser
+import org.koitharu.kotatsu.parsers.PagedMangaParser
+import org.koitharu.kotatsu.parsers.config.ConfigKey
+import org.koitharu.kotatsu.parsers.model.*
+import org.koitharu.kotatsu.parsers.util.*
+import java.text.SimpleDateFormat
+import java.util.*
+import kotlin.collections.HashSet
+
+@MangaSourceParser("BLOGTRUYEN", "BlogTruyen", "vi")
+class BlogTruyenParser(override val context: MangaLoaderContext) :
+	PagedMangaParser(MangaSource.BLOGTRUYEN, pageSize = 20) {
+
+	override val configKeyDomain: ConfigKey.Domain
+		get() = ConfigKey.Domain("blogtruyen.vn", null)
+
+	override val sortOrders: Set<SortOrder>
+		get() = EnumSet.of(SortOrder.UPDATED)
+
+	private val mutex = Mutex()
+	private val dateFormat = SimpleDateFormat("dd/MM/yyyy HH:mm", Locale.US)
+	private var cacheTags: ArrayMap<String, MangaTag>? = null
+
+	override suspend fun getDetails(manga: Manga): Manga {
+		val doc = context.httpGet(manga.url.toAbsoluteUrl(getDomain())).parseHtml()
+		val descriptionElement = doc.selectFirstOrThrow("div.description")
+		val statusText = descriptionElement
+			.selectFirst("p:contains(Trạng thái) > span.color-red")
+			?.text()
+
+		val state = when (statusText) {
+			"Đang tiến hành" -> MangaState.ONGOING
+			"Đã hoàn thành" -> MangaState.FINISHED
+			else -> null
+		}
+
+		val rating = doc.selectFirst("span.total-vote")?.attr("ng-init")?.let { text ->
+			val like = text.substringAfter("TotalLike=")
+				.substringBefore(';')
+				.toIntOrNull() ?: return@let RATING_UNKNOWN
+			val dislike = text.substringAfter("TotalDisLike=")
+				.toIntOrNull() ?: return@let RATING_UNKNOWN
+
+			when {
+				like == 0 && dislike == 0 -> RATING_UNKNOWN
+				else -> like.toFloat() / (like + dislike)
+			}
+		}
+
+		val tagMap = getOrCreateTagMap()
+		val tags = descriptionElement.select("p > span.category").mapNotNullToSet {
+			val tagName = it.selectFirst("a")?.text()?.trim() ?: return@mapNotNullToSet null
+			tagMap[tagName]
+		}
+
+		return manga.copy(
+			tags = tags,
+			author = descriptionElement.selectFirst("p:contains(Tác giả) > a")?.text(),
+			description = doc.selectFirst(".detail .content")?.html(),
+			chapters = parseChapterList(doc),
+			largeCoverUrl = doc.selectLast("div.thumbnail > img")?.attrAsAbsoluteUrlOrNull("src"),
+			state = state,
+			rating = rating ?: RATING_UNKNOWN,
+			isNsfw = doc.getElementById("warningCategory") != null
+		)
+	}
+
+	private fun parseChapterList(doc: Document): List<MangaChapter> {
+		val chapterList = doc.select("#list-chapters > p")
+		return chapterList.asReversed().mapChapters { index, element ->
+			val titleElement = element.selectFirst("span.title > a") ?: return@mapChapters null
+			val name = titleElement.text()
+			val relativeUrl = titleElement.attrAsRelativeUrl("href")
+			val id = relativeUrl.substringAfter('/').substringBefore('/')
+			val uploadDate = dateFormat.tryParse(element.select("span.publishedDate").text())
+			MangaChapter(
+				id = generateUid(id),
+				name = name,
+				number = index + 1,
+				url = relativeUrl,
+				scanlator = null,
+				uploadDate = uploadDate,
+				branch = null,
+				source = source
+			)
+		}
+	}
+
+	override suspend fun getListPage(
+		page: Int,
+		query: String?,
+		tags: Set<MangaTag>?,
+		sortOrder: SortOrder,
+	): List<Manga> {
+		return when {
+			!query.isNullOrEmpty() -> {
+				val searchUrl = "https://${getDomain()}/timkiem/nangcao/1/0/-1/-1?txt=${query.urlEncoded()}&p=$page"
+				val searchContent = context.httpGet(searchUrl).parseHtml()
+					.selectFirst("section.list-manga-bycate > div.list")
+				parseMangaList(searchContent)
+			}
+
+			!tags.isNullOrEmpty() -> {
+				val tag = tags.oneOrThrowIfMany()!!
+				val categoryAjax = "https://${getDomain()}/ajax/Category/AjaxLoadMangaByCategory?id=${tag.key}&orderBy=5&p=$page"
+				val listContent = context.httpGet(categoryAjax).parseHtml().selectFirst("div.list")
+				parseMangaList(listContent)
+			}
+			else -> getNormalList(page)
+		}
+	}
+
+	private suspend fun getNormalList(page: Int): List<Manga> {
+		val pageLink = "https://${getDomain()}/page-$page"
+		val doc = context.httpGet(pageLink).parseHtml()
+		val listElements = doc.selectFirstOrThrow("section.list-mainpage.listview")
+			.select("div.bg-white.storyitem")
+
+		return listElements.mapNotNull {
+			val linkTag = it.selectFirst("div.fl-l > a") ?: return@mapNotNull null
+			val relativeUrl = linkTag.attrAsRelativeUrl("href")
+			val tagMap = getOrCreateTagMap()
+			val tags = it.select("footer > div.category > a").mapNotNullToSet { a ->
+				tagMap[a.text()]
+			}
+
+			Manga(
+				id = generateUid(relativeUrl),
+				title = linkTag.attr("title"),
+				altTitle = null,
+				description = it.selectFirst("p.al-j.break.line-height-15")?.text(),
+				url = relativeUrl,
+				publicUrl = relativeUrl.toAbsoluteUrl(getDomain()),
+				coverUrl = linkTag.selectLast("img")?.attr("src").orEmpty(),
+				source = source,
+				tags = tags,
+				isNsfw = false,
+				rating = RATING_UNKNOWN,
+				author = null,
+				state = null,
+			)
+		}
+	}
+
+	private fun parseMangaList(listElement: Element?): List<Manga> {
+		listElement ?: return emptyList()
+
+		return listElement.select("span.tiptip[data-tiptip]").mapNotNull {
+			val mangaInfo = listElement.getElementById(it.attr("data-tiptip")) ?: return@mapNotNull null
+			val a = it.selectFirst("a") ?: return@mapNotNull null
+			val relativeUrl = a.attrAsRelativeUrl("href")
+			Manga(
+				id = generateUid(relativeUrl),
+				title = a.text(),
+				altTitle = null,
+				description = mangaInfo.select("div.al-j.fs-12").text(),
+				url = relativeUrl,
+				publicUrl = relativeUrl.toAbsoluteUrl(getDomain()),
+				coverUrl = mangaInfo.selectFirst("div > img.img")?.absUrl("src").orEmpty(),
+				isNsfw = false,
+				rating = RATING_UNKNOWN,
+				tags = emptySet(),
+				author = null,
+				state = null,
+				source = source,
+			)
+		}
+	}
+
+	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> {
+		fun generateImageId(index: Int) = generateUid("${chapter.url}/$index")
+
+		val doc = context.httpGet(chapter.url.toAbsoluteUrl(getDomain())).parseHtml()
+		val pages = ArrayList<MangaPage>()
+		val referer = chapter.url.toAbsoluteUrl(getDomain())
+		doc.select("#content > img").forEach { img ->
+			val url = img.attrAsRelativeUrl("src")
+			pages.add(
+				MangaPage(
+					id = generateImageId(pages.lastIndex),
+					url = url,
+					referer = referer,
+					preview = null,
+					source = source,
+				)
+			)
+		}
+
+		// Some chapters use js script to render images
+		val script = doc.selectLast("#content > script")
+		if (script != null && script.data().contains("listImageCaption")) {
+			val imagesStr = script.data().substringBefore(';').substringAfterLast('=').trim()
+			val imageArr = JSONArray(imagesStr)
+			for (i in 0 until imageArr.length()) {
+				val imageUrl = imageArr.getJSONObject(i).getString("url")
+				pages.add(
+					MangaPage(
+						id = generateImageId(pages.lastIndex),
+						url = imageUrl,
+						referer = referer,
+						preview = null,
+						source = source
+					)
+				)
+			}
+		}
+
+		return pages
+	}
+
+	override suspend fun getTags(): Set<MangaTag> {
+		val map = getOrCreateTagMap()
+		val tags = HashSet<MangaTag>(map.size)
+		for (entry in map) {
+			tags.add(entry.value)
+		}
+
+		return tags
+	}
+
+
+	private suspend fun getOrCreateTagMap(): ArrayMap<String, MangaTag> = mutex.withLock {
+		cacheTags?.let { return@withLock it }
+		val doc = context.httpGet("/timkiem/nangcao".toAbsoluteUrl(getDomain())).parseHtml()
+		val tagItems = doc.select("li[data-id]")
+		val tagMap = ArrayMap<String, MangaTag>(tagItems.size)
+		for (tag in tagItems) {
+			val title = tag.text().trim()
+			tagMap[tag.text().trim()] = MangaTag(
+				title = title,
+				key = tag.attr("data-id"),
+				source = source
+			)
+		}
+
+		cacheTags = tagMap
+		tagMap
+	}
+}
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/DesuMeParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/DesuMeParser.kt
@@ -1,8 +1,8 @@
 package org.koitharu.kotatsu.parsers.site

 import org.koitharu.kotatsu.parsers.MangaLoaderContext
-import org.koitharu.kotatsu.parsers.MangaParser
 import org.koitharu.kotatsu.parsers.MangaSourceParser
+import org.koitharu.kotatsu.parsers.PagedMangaParser
 import org.koitharu.kotatsu.parsers.config.ConfigKey
 import org.koitharu.kotatsu.parsers.exception.ParseException
 import org.koitharu.kotatsu.parsers.model.*
@@ -13,7 +13,7 @@ import org.koitharu.kotatsu.parsers.util.json.mapJSONToSet
 import java.util.*

@MangaSourceParser("DESUME", "Desu.me", "ru")
-internal class DesuMeParser(override val context: MangaLoaderContext) : MangaParser(MangaSource.DESUME) {
+internal class DesuMeParser(override val context: MangaLoaderContext) : PagedMangaParser(MangaSource.DESUME, 20) {

 	override val configKeyDomain = ConfigKey.Domain("desu.me", null)

@@ -24,13 +24,13 @@ internal class DesuMeParser(override val context: MangaLoaderContext) : MangaPar
 		SortOrder.ALPHABETICAL,
 	)

-	override suspend fun getList(
-		offset: Int,
+	override suspend fun getListPage(
+		page: Int,
 		query: String?,
 		tags: Set<MangaTag>?,
 		sortOrder: SortOrder,
 	): List<Manga> {
-		if (query != null && offset != 0) {
+		if (query != null && page != searchPaginator.firstPage) {
 			return emptyList()
 		}
 		val domain = getDomain()
@@ -40,7 +40,7 @@ internal class DesuMeParser(override val context: MangaLoaderContext) : MangaPar
 			append("/manga/api/?limit=20&order=")
 			append(getSortKey(sortOrder))
 			append("&page=")
-			append((offset / 20) + 1)
+			append(page)
 			if (!tags.isNullOrEmpty()) {
 				append("&genres=")
 				appendAll(tags, ",") { it.key }
@@ -50,7 +50,8 @@ internal class DesuMeParser(override val context: MangaLoaderContext) : MangaPar
 				append(query)
 			}
 		}
-		val json = context.httpGet(url).parseJson().getJSONArray("response") ?: parseFailed("Invalid response")
+		val json = context.httpGet(url).parseJson().getJSONArray("response")
+			?: throw ParseException("Invalid response", url)
 		val total = json.length()
 		val list = ArrayList<Manga>(total)
 		for (i in 0 until total) {
@@ -83,7 +84,7 @@ internal class DesuMeParser(override val context: MangaLoaderContext) : MangaPar
 	override suspend fun getDetails(manga: Manga): Manga {
 		val url = manga.url.toAbsoluteUrl(getDomain())
 		val json = context.httpGet(url).parseJson().getJSONObject("response")
-			?: throw ParseException("Invalid response")
+			?: throw ParseException("Invalid response", url)
 		val baseChapterUrl = manga.url + "/chapter/"
 		val chaptersList = json.getJSONObject("chapters").getJSONArray("list")
 		val totalChapters = chaptersList.length()
@@ -119,7 +120,7 @@ internal class DesuMeParser(override val context: MangaLoaderContext) : MangaPar
 		val fullUrl = chapter.url.toAbsoluteUrl(getDomain())
 		val json = context.httpGet(fullUrl)
 			.parseJson()
-			.getJSONObject("response") ?: throw ParseException("Invalid response")
+			.getJSONObject("response") ?: throw ParseException("Invalid response", fullUrl)
 		return json.getJSONObject("pages").getJSONArray("list").mapJSON { jo ->
 			MangaPage(
 				id = generateUid(jo.getLong("id")),
@@ -133,17 +134,17 @@ internal class DesuMeParser(override val context: MangaLoaderContext) : MangaPar

 	override suspend fun getTags(): Set<MangaTag> {
 		val doc = context.httpGet("https://${getDomain()}/manga/").parseHtml()
-		val root = doc.body().getElementById("animeFilter")
-			?.selectFirst(".catalog-genres") ?: throw ParseException("Root not found")
+		val root = doc.body().requireElementById("animeFilter")
+			.selectFirstOrThrow(".catalog-genres")
 		return root.select("li").mapToSet {
-			val input = it.selectFirst("input") ?: parseFailed()
+			val input = it.selectFirstOrThrow("input")
 			MangaTag(
 				source = source,
 				key = input.attr("data-genre-slug").ifEmpty {
-					parseFailed("data-genre-slug is empty")
+					it.parseFailed("data-genre-slug is empty")
 				},
 				title = input.attr("data-genre-name").toTitleCase().ifEmpty {
-					parseFailed("data-genre-name is empty")
+					it.parseFailed("data-genre-name is empty")
 				},
 			)
 		}
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/ExHentaiParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/ExHentaiParser.kt
@@ -2,12 +2,11 @@ package org.koitharu.kotatsu.parsers.site

 import org.jsoup.nodes.Element
 import org.koitharu.kotatsu.parsers.MangaLoaderContext
-import org.koitharu.kotatsu.parsers.MangaParser
 import org.koitharu.kotatsu.parsers.MangaParserAuthProvider
 import org.koitharu.kotatsu.parsers.MangaSourceParser
+import org.koitharu.kotatsu.parsers.PagedMangaParser
 import org.koitharu.kotatsu.parsers.config.ConfigKey
 import org.koitharu.kotatsu.parsers.exception.AuthRequiredException
-import org.koitharu.kotatsu.parsers.exception.ParseException
 import org.koitharu.kotatsu.parsers.model.*
 import org.koitharu.kotatsu.parsers.util.*
 import java.util.*
@@ -19,7 +18,7 @@ private const val DOMAIN_AUTHORIZED = "exhentai.org"
@MangaSourceParser("EXHENTAI", "ExHentai")
 internal class ExHentaiParser(
 	override val context: MangaLoaderContext,
-) : MangaParser(MangaSource.EXHENTAI), MangaParserAuthProvider {
+) : PagedMangaParser(MangaSource.EXHENTAI, pageSize = 25), MangaParserAuthProvider {

 	override val sortOrders: Set<SortOrder> = Collections.singleton(
 		SortOrder.NEWEST,
@@ -57,13 +56,12 @@ internal class ExHentaiParser(
 		context.cookieJar.insertCookies(DOMAIN_UNAUTHORIZED, "nw=1", "sl=dm_2")
 	}

-	override suspend fun getList(
-		offset: Int,
+	override suspend fun getListPage(
+		page: Int,
 		query: String?,
 		tags: Set<MangaTag>?,
 		sortOrder: SortOrder,
 	): List<Manga> {
-		val page = (offset / 25f).toIntUp()
 		var search = query?.urlEncoded().orEmpty()
 		val url = buildString {
 			append("https://")
@@ -95,19 +93,19 @@ internal class ExHentaiParser(
 		val root = body.selectFirst("table.itg")
 			?.selectFirst("tbody")
 			?: if (updateDm) {
-				parseFailed("Cannot find root")
+				body.parseFailed("Cannot find root")
 			} else {
 				updateDm = true
-				return getList(offset, query, tags, sortOrder)
+				return getListPage(page, query, tags, sortOrder)
 			}
 		updateDm = false
 		return root.children().mapNotNull { tr ->
 			if (tr.childrenSize() != 2) return@mapNotNull null
 			val (td1, td2) = tr.children()
-			val glink = td2.selectFirst("div.glink") ?: parseFailed("glink not found")
-			val a = glink.parents().select("a").first() ?: parseFailed("link not found")
+			val glink = td2.selectFirstOrThrow("div.glink")
+			val a = glink.parents().select("a").first() ?: glink.parseFailed("link not found")
 			val href = a.attrAsRelativeUrl("href")
-			val tagsDiv = glink.nextElementSibling() ?: parseFailed("tags div not found")
+			val tagsDiv = glink.nextElementSibling() ?: glink.parseFailed("tags div not found")
 			val mainTag = td2.selectFirst("div.cn")?.let { div ->
 				MangaTag(
 					title = div.text().toTitleCase(),
@@ -135,7 +133,7 @@ internal class ExHentaiParser(

 	override suspend fun getDetails(manga: Manga): Manga {
 		val doc = context.httpGet(manga.url.toAbsoluteUrl(getDomain())).parseHtml()
-		val root = doc.body().selectFirst("div.gm") ?: parseFailed("Cannot find root")
+		val root = doc.body().selectFirstOrThrow("div.gm")
 		val cover = root.getElementById("gd1")?.children()?.first()
 		val title = root.getElementById("gd2")
 		val taglist = root.getElementById("taglist")
@@ -179,7 +177,7 @@ internal class ExHentaiParser(

 	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> {
 		val doc = context.httpGet(chapter.url.toAbsoluteUrl(getDomain())).parseHtml()
-		val root = doc.body().getElementById("gdt") ?: parseFailed("Root not found")
+		val root = doc.body().requireElementById("gdt")
 		return root.select("a").map { a ->
 			val url = a.attrAsRelativeUrl("href")
 			MangaPage(
@@ -194,14 +192,12 @@ internal class ExHentaiParser(

 	override suspend fun getPageUrl(page: MangaPage): String {
 		val doc = context.httpGet(page.url.toAbsoluteUrl(getDomain())).parseHtml()
-		return doc.body().getElementById("img")?.absUrl("src")
-			?: parseFailed("Image not found")
+		return doc.body().requireElementById("img").attrAsAbsoluteUrl("src")
 	}

 	override suspend fun getTags(): Set<MangaTag> {
 		val doc = context.httpGet("https://${getDomain()}").parseHtml()
-		val root = doc.body().getElementById("searchbox")?.selectFirst("table")
-			?: parseFailed("Root not found")
+		val root = doc.body().requireElementById("searchbox").selectFirstOrThrow("table")
 		return root.select("div.cs").mapNotNullToSet { div ->
 			val id = div.id().substringAfterLast('_').toIntOrNull()
 				?: return@mapNotNullToSet null
@@ -222,7 +218,7 @@ internal class ExHentaiParser(
 			?: if (doc.getElementById("userlinksguest") != null) {
 				throw AuthRequiredException(source)
 			} else {
-				throw ParseException(null)
+				doc.parseFailed()
 			}
 		return username
 	}
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/KomikTapParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/KomikTapParser.kt
@@ -0,0 +1,189 @@
+package org.koitharu.kotatsu.parsers.site
+
+import org.json.JSONObject
+import org.jsoup.nodes.Element
+import org.koitharu.kotatsu.parsers.MangaLoaderContext
+import org.koitharu.kotatsu.parsers.MangaSourceParser
+import org.koitharu.kotatsu.parsers.PagedMangaParser
+import org.koitharu.kotatsu.parsers.config.ConfigKey
+import org.koitharu.kotatsu.parsers.model.*
+import org.koitharu.kotatsu.parsers.util.*
+import org.koitharu.kotatsu.parsers.util.json.associateByKey
+import org.koitharu.kotatsu.parsers.util.json.stringIterator
+import java.text.SimpleDateFormat
+import java.util.*
+
+@MangaSourceParser("KOMIKTAP", "KomikTap", "id")
+class KomikTapParser(
+	override val context: MangaLoaderContext,
+) : PagedMangaParser(MangaSource.KOMIKTAP, pageSize = 25, searchPageSize = 10) {
+
+	override val configKeyDomain = ConfigKey.Domain("194.233.66.232", arrayOf("194.233.66.232", "komiktap.in"))
+
+	override val sortOrders = EnumSet.of(
+		SortOrder.ALPHABETICAL,
+		SortOrder.POPULARITY,
+		SortOrder.UPDATED,
+		SortOrder.NEWEST,
+	)
+
+	override suspend fun getListPage(
+		page: Int,
+		query: String?,
+		tags: Set<MangaTag>?,
+		sortOrder: SortOrder,
+	): List<Manga> {
+		val url = urlBuilder()
+		if (query.isNullOrEmpty()) {
+			url.addPathSegment("manga")
+				.addQueryParameter("page", page.toString())
+				.addQueryParameter("status", "")
+				.addQueryParameter("type", "")
+				.addQueryParameter("order", sortOrder.asQueryParameter())
+			tags?.forEach {
+				url.addQueryParameter("genre[]", it.key)
+			}
+		} else {
+			url.addPathSegment("page")
+				.addPathSegment(page.toString())
+				.addQueryParameter("s", query)
+		}
+		val root = context.httpGet(url.build()).parseHtml().body()
+			.requireElementById("content")
+			.selectFirstOrThrow(".listupd")
+		return root.select("div.bs").map { div ->
+			val a = div.selectFirstOrThrow("a")
+			val img = div.selectFirstOrThrow("img")
+			val href = a.attrAsRelativeUrl("href")
+			val bigor = div.selectFirstOrThrow(".bigor")
+			Manga(
+				id = generateUid(href),
+				title = bigor.selectFirstOrThrow(".tt").text(),
+				altTitle = null,
+				url = href,
+				publicUrl = a.attrAsAbsoluteUrl("href"),
+				rating = bigor.selectFirst(".rating .numscore")
+					?.text()?.toFloatOrNull()?.div(10f)
+					.assertNotNull("rating") ?: RATING_UNKNOWN,
+				isNsfw = true,
+				coverUrl = img.attrAsAbsoluteUrl("src"),
+				tags = emptySet(),
+				state = when (div.selectFirst("span.status")?.text()) {
+					"Completed" -> MangaState.FINISHED
+					else -> null
+				},
+				author = null,
+				source = source,
+			)
+		}
+	}
+
+	override suspend fun getDetails(manga: Manga): Manga {
+		val root = context.httpGet(manga.url.toAbsoluteUrl(getDomain())).parseHtml().body()
+			.requireElementById("content")
+			.selectFirstOrThrow("article")
+		val table = root.selectFirstOrThrow(".infotable")
+		val dateFormat = SimpleDateFormat("MMM d, yyyy", checkNotNull(sourceLocale))
+		val chapters = root.requireElementById("chapterlist")
+			.select("li")
+			.mapChapters { index, li ->
+				val a = li.selectFirstOrThrow("a")
+				val href = a.attrAsRelativeUrl("href")
+				MangaChapter(
+					id = generateUid(href),
+					name = a.selectFirstOrThrow(".chapternum").text(),
+					number = index + 1,
+					url = href,
+					scanlator = null,
+					uploadDate = dateFormat.tryParse(a.selectFirst(".chapterdate")?.text()),
+					branch = null,
+					source = source,
+				)
+			}
+
+		return manga.copy(
+			largeCoverUrl = root.selectFirst("div.thumb")
+				?.selectFirst("img")
+				?.attrAsAbsoluteUrlOrNull("src")
+				.assertNotNull("largeCoverUrl"),
+			author = table.tableValue("Author").assertNotNull("author")?.takeUnless { it == "N/A" },
+			state = when (table.tableValue("Status").assertNotNull("status")) {
+				"Completed" -> MangaState.FINISHED
+				"Ongoing" -> MangaState.ONGOING
+				else -> null
+			},
+			tags = root.selectFirstOrThrow(".seriestugenre")
+				.select("a")
+				.mapToSet { a ->
+					MangaTag(
+						title = a.text().toTitleCase(Locale.ENGLISH),
+						key = a.attr("href").removeSuffix('/').substringAfterLast('/'),
+						source = manga.source,
+					)
+				},
+			description = root.selectFirstOrThrow("[itemprop=\"description\"]").html(),
+			chapters = chapters,
+		)
+	}
+
+	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> {
+		val fullUrl = chapter.url.toAbsoluteUrl(getDomain())
+		val doc = context.httpGet(fullUrl).parseHtml()
+		val scripts = doc.select("script")
+		for (script in scripts) {
+			val content = script.html()
+			val pos = content.indexOf("ts_reader.run")
+			if (pos < 0) {
+				continue
+			}
+			val json = JSONObject(content.substringBetween("(", ")"))
+			val sources = json.getJSONArray("sources").associateByKey("source")
+			val images = (sources[json.optString("defaultSource")] ?: sources.values.first()).getJSONArray("images")
+			val result = ArrayList<MangaPage>(images.length())
+			images.stringIterator().forEach {
+				result += MangaPage(
+					id = generateUid(it),
+					url = it,
+					referer = fullUrl,
+					preview = null,
+					source = source,
+				)
+			}
+			return result
+		}
+		doc.parseFailed("Script with pages not found")
+	}
+
+	override suspend fun getTags(): Set<MangaTag> {
+		val root = context.httpGet("https://${getDomain()}/manga/").parseHtml()
+			.selectFirstOrThrow("form.filters")
+			.selectFirstOrThrow("ul.genrez")
+		return root.select("li").mapNotNullToSet { li ->
+			val input = li.selectFirstOrThrow("input")
+			if (input.attr("name") != "genre[]") {
+				return@mapNotNullToSet null
+			}
+			MangaTag(
+				title = li.selectFirstOrThrow("label").text().toTitleCase(sourceLocale ?: Locale.ENGLISH),
+				key = input.attrOrNull("value") ?: return@mapNotNullToSet null,
+				source = source,
+			)
+		}
+	}
+
+	override fun getFaviconUrl(): String {
+		return "https://${getDomain()}/wp-content/uploads/2020/09/cropped-LOGOa-180x180.png"
+	}
+
+	private fun SortOrder.asQueryParameter() = when (this) {
+		SortOrder.UPDATED -> "update"
+		SortOrder.POPULARITY -> "popular"
+		SortOrder.NEWEST -> "latest"
+		SortOrder.ALPHABETICAL -> "title"
+		else -> ""
+	}
+
+	private fun Element.tableValue(key: String): String? {
+		return getElementsMatchingOwnText(key).singleOrNull()?.parent()?.selectLast("td")?.text()
+	}
+}
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/MangaDexParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/MangaDexParser.kt
@@ -1,12 +1,15 @@
 package org.koitharu.kotatsu.parsers.site

+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.async
+import kotlinx.coroutines.awaitAll
 import kotlinx.coroutines.coroutineScope
 import org.json.JSONObject
 import org.koitharu.kotatsu.parsers.MangaLoaderContext
 import org.koitharu.kotatsu.parsers.MangaParser
 import org.koitharu.kotatsu.parsers.MangaSourceParser
 import org.koitharu.kotatsu.parsers.config.ConfigKey
+import org.koitharu.kotatsu.parsers.exception.ParseException
 import org.koitharu.kotatsu.parsers.model.*
 import org.koitharu.kotatsu.parsers.util.*
 import org.koitharu.kotatsu.parsers.util.json.*
@@ -14,7 +17,9 @@ import java.text.SimpleDateFormat
 import java.util.*

 private const val PAGE_SIZE = 20
-private const val CHAPTERS_PAGE_SIZE = 60
+private const val CHAPTERS_FIRST_PAGE_SIZE = 120
+private const val CHAPTERS_MAX_PAGE_SIZE = 500
+private const val CHAPTERS_PARALLELISM = 3
 private const val CONTENT_RATING =
 	"contentRating[]=safe&contentRating[]=suggestive&contentRating[]=erotica&contentRating[]=pornographic"
 private const val LOCALE_FALLBACK = "en"
@@ -62,6 +67,7 @@ internal class MangaDexParser(override val context: MangaLoaderContext) : MangaP
 				when (sortOrder) {
 					SortOrder.UPDATED,
 					-> "[latestUploadedChapter]=desc"
+
 					SortOrder.ALPHABETICAL -> "[title]=asc"
 					SortOrder.NEWEST -> "[createdAt]=desc"
 					SortOrder.POPULARITY -> "[followedCount]=desc"
@@ -118,12 +124,13 @@ internal class MangaDexParser(override val context: MangaLoaderContext) : MangaP

 	override suspend fun getDetails(manga: Manga): Manga = coroutineScope {
 		val domain = getDomain()
+		val mangaId = manga.url.removePrefix("/")
 		val attrsDeferred = async {
 			context.httpGet(
-				"https://api.$domain/manga/${manga.url}?includes[]=artist&includes[]=author&includes[]=cover_art",
+				"https://api.$domain/manga/${mangaId}?includes[]=artist&includes[]=author&includes[]=cover_art",
 			).parseJson().getJSONObject("data").getJSONObject("attributes")
 		}
-		val feedDeferred = async { loadChapters(manga) }
+		val feedDeferred = async { loadChapters(mangaId) }
 		val mangaAttrs = attrsDeferred.await()
 		val feed = feedDeferred.await()
 		// 2022-01-02T00:27:11+00:00
@@ -134,11 +141,11 @@ internal class MangaDexParser(override val context: MangaLoaderContext) : MangaP
 		manga.copy(
 			description = mangaAttrs.getJSONObject("description").selectByLocale()
 				?: manga.description,
-			chapters = feed.mapNotNull { jo ->
+			chapters = feed.mapChapters { _, jo ->
 				val id = jo.getString("id")
 				val attrs = jo.getJSONObject("attributes")
 				if (!attrs.isNull("externalUrl")) {
-					return@mapNotNull null
+					return@mapChapters null
 				}
 				val locale = attrs.getStringOrNull("translatedLanguage")?.let { Locale.forLanguageTag(it) }
 				val relations = jo.getJSONArray("relationships").associateByKey("type")
@@ -201,30 +208,62 @@ internal class MangaDexParser(override val context: MangaLoaderContext) : MangaP
 		return getStringOrNull(LOCALE_FALLBACK) ?: values().nextOrNull() as? String
 	}

-	private suspend fun loadChapters(manga: Manga): List<JSONObject> {
-		val domain = getDomain()
-		val result = ArrayList<JSONObject>()
-		while (true) {
-			val url = buildString {
-				append("https://api.")
-				append(domain)
-				append("/manga/")
-				append(manga.url)
-				append("/feed")
-				append("?limit=")
-				append(CHAPTERS_PAGE_SIZE)
-				append("&includes[]=scanlation_group&order[volume]=asc&order[chapter]=asc&offset=")
-				append(result.size)
-				append('&')
-				append(CONTENT_RATING)
-			}
-			val json = context.httpGet(url).parseJson()
-			val data = json.optJSONArray("data")
-			if (data.isNullOrEmpty()) {
-				break
-			}
-			data.mapJSONTo(result) { it }
+	private suspend fun loadChapters(mangaId: String): List<JSONObject> {
+		val firstPage = loadChapters(mangaId, offset = 0, limit = CHAPTERS_FIRST_PAGE_SIZE)
+		if (firstPage.size >= firstPage.total) {
+			return firstPage.data
 		}
+		val tail = coroutineScope {
+			val leftCount = firstPage.total - firstPage.size
+			val pages = (leftCount / CHAPTERS_MAX_PAGE_SIZE.toFloat()).toIntUp()
+			val dispatcher = Dispatchers.Default.limitedParallelism(CHAPTERS_PARALLELISM)
+			List(pages) { page ->
+				val offset = page * CHAPTERS_MAX_PAGE_SIZE + firstPage.size
+				async(dispatcher) {
+					loadChapters(mangaId, offset, CHAPTERS_MAX_PAGE_SIZE)
+				}
+			}.awaitAll()
+		}
+		val result = ArrayList<JSONObject>(firstPage.total)
+		result += firstPage.data
+		tail.flatMapTo(result) { it.data }
 		return result
 	}
+
+	private suspend fun loadChapters(mangaId: String, offset: Int, limit: Int): Chapters {
+		val url = buildString {
+			append("https://api.")
+			append(getDomain())
+			append("/manga/")
+			append(mangaId)
+			append("/feed")
+			append("?limit=")
+			append(limit)
+			append("&includes[]=scanlation_group&order[volume]=asc&order[chapter]=asc&offset=")
+			append(offset)
+			append('&')
+			append(CONTENT_RATING)
+		}
+		val json = context.httpGet(url).parseJson()
+		if (json.getString("result") == "ok") {
+			return Chapters(
+				data = json.optJSONArray("data")?.toJSONList().orEmpty(),
+				total = json.getInt("total"),
+			)
+		} else {
+			val error = json.optJSONArray("errors").mapJSON { jo ->
+				jo.getString("detail")
+			}.joinToString("\n")
+			throw ParseException(error, url)
+		}
+	}
+
+	private class Chapters(
+		val data: List<JSONObject>,
+		val total: Int,
+	) {
+
+		val size: Int
+			get() = data.size
+	}
 }
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/MangaInUaParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/MangaInUaParser.kt
@@ -1,8 +1,8 @@
 package org.koitharu.kotatsu.parsers.site

 import org.koitharu.kotatsu.parsers.MangaLoaderContext
-import org.koitharu.kotatsu.parsers.MangaParser
 import org.koitharu.kotatsu.parsers.MangaSourceParser
+import org.koitharu.kotatsu.parsers.PagedMangaParser
 import org.koitharu.kotatsu.parsers.config.ConfigKey
 import org.koitharu.kotatsu.parsers.model.*
 import org.koitharu.kotatsu.parsers.util.*
@@ -12,26 +12,28 @@ import java.util.*
 private const val DEF_BRANCH_NAME = "Основний переклад"

@MangaSourceParser("MANGAINUA", "MANGA/in/UA", "uk")
-class MangaInUaParser(override val context: MangaLoaderContext) : MangaParser(MangaSource.MANGAINUA) {
+class MangaInUaParser(override val context: MangaLoaderContext) : PagedMangaParser(
+	source = MangaSource.MANGAINUA,
+	pageSize = 24,
+	searchPageSize = 10,
+) {

 	override val sortOrders: Set<SortOrder>
 		get() = Collections.singleton(SortOrder.UPDATED)

 	override val configKeyDomain: ConfigKey.Domain = ConfigKey.Domain("manga.in.ua", null)

-	override suspend fun getList(
-		offset: Int,
+	override suspend fun getListPage(
+		page: Int,
 		query: String?,
 		tags: Set<MangaTag>?,
 		sortOrder: SortOrder,
 	): List<Manga> {
-		val page = (offset / 24f).toIntUp().inc()
-		val searchPage = (offset / 10f).toIntUp().inc()
 		val url = when {
 			!query.isNullOrEmpty() -> (
 					"/index.php?do=search" +
 							"&subaction=search" +
-							"&search_start=$searchPage" +
+							"&search_start=$page" +
 							"&full_search=1" +
 							"&story=$query" +
 							"&titleonly=3"
@@ -43,7 +45,7 @@ class MangaInUaParser(override val context: MangaLoaderContext) : MangaParser(Ma
 			else -> "/mangas/page/$page".toAbsoluteUrl(getDomain())
 		}
 		val doc = context.httpGet(url).parseHtml()
-		val container = doc.body().getElementById("dle-content") ?: parseFailed("Container not found")
+		val container = doc.body().requireElementById("dle-content")
 		val items = container.select("div.col-6")
 		return items.mapNotNull { item ->
 			val href = item.selectFirst("a")?.attrAsRelativeUrl("href") ?: return@mapNotNull null
@@ -79,12 +81,9 @@ class MangaInUaParser(override val context: MangaLoaderContext) : MangaParser(Ma

 	override suspend fun getDetails(manga: Manga): Manga {
 		val doc = context.httpGet(manga.url.toAbsoluteUrl(getDomain())).parseHtml()
-		val root =
-			doc.body().getElementById("dle-content") ?: parseFailed("Cannot find root")
+		val root = doc.body().requireElementById("dle-content")
 		val dateFormat = SimpleDateFormat("dd.MM.yyyy", Locale.US)
-		val chapterNodes = root.selectFirstOrThrow(".linkstocomics")
-			.select(".ltcitems")
-			.filterNot { x -> x.selectFirst(".foruserreadedbar") != null }
+		val chapterNodes = root.selectFirstOrThrow(".linkstocomics").select(".ltcitems")
 		var prevChapterName: String? = null
 		var i = 0
 		return manga.copy(
@@ -123,10 +122,9 @@ class MangaInUaParser(override val context: MangaLoaderContext) : MangaParser(Ma
 	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> {
 		val fullUrl = chapter.url.toAbsoluteUrl(getDomain())
 		val doc = context.httpGet(fullUrl).parseHtml()
-		val root =
-			doc.body().getElementById("comics")?.selectFirst("ul.xfieldimagegallery") ?: parseFailed("Root not found")
+		val root = doc.body().requireElementById("comics").selectFirstOrThrow("ul.xfieldimagegallery")
 		return root.select("li").map { ul ->
-			val img = ul.selectFirst("img") ?: parseFailed("Page image not found")
+			val img = ul.selectFirstOrThrow("img")
 			val url = img.attrAsAbsoluteUrl("data-src")
 			MangaPage(
 				id = generateUid(url),
@@ -141,8 +139,7 @@ class MangaInUaParser(override val context: MangaLoaderContext) : MangaParser(Ma
 	override suspend fun getTags(): Set<MangaTag> {
 		val domain = getDomain()
 		val doc = context.httpGet("https://$domain/mangas").parseHtml()
-		val root =
-			doc.body().getElementById("menu_1")?.selectFirst("div.menu__wrapper") ?: parseFailed("Cannot find root")
+		val root = doc.body().requireElementById("menu_1").selectFirstOrThrow("div.menu__wrapper")
 		return root.select("li").mapNotNullToSet { li ->
 			val a = li.selectFirst("a") ?: return@mapNotNullToSet null
 			MangaTag(
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/MangaOwlParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/MangaOwlParser.kt
@@ -4,7 +4,6 @@ import org.koitharu.kotatsu.parsers.MangaLoaderContext
 import org.koitharu.kotatsu.parsers.MangaParser
 import org.koitharu.kotatsu.parsers.MangaSourceParser
 import org.koitharu.kotatsu.parsers.config.ConfigKey
-import org.koitharu.kotatsu.parsers.exception.ParseException
 import org.koitharu.kotatsu.parsers.model.*
 import org.koitharu.kotatsu.parsers.util.*
 import java.text.SimpleDateFormat
@@ -52,7 +51,7 @@ internal class MangaOwlParser(override val context: MangaLoaderContext) : MangaP
 			}
 		}
 		val doc = context.httpGet(link).parseHtml()
-		val slides = doc.body().select("ul.slides") ?: parseFailed("An error occurred while parsing")
+		val slides = doc.body().selectOrThrow("ul.slides")
 		val items = slides.select("div.col-md-2")
 		return items.mapNotNull { item ->
 			val href = item.selectFirst("h6 a")?.attrAsRelativeUrlOrNull("href") ?: return@mapNotNull null
@@ -80,12 +79,12 @@ internal class MangaOwlParser(override val context: MangaLoaderContext) : MangaP

 	override suspend fun getDetails(manga: Manga): Manga {
 		val doc = context.httpGet(manga.publicUrl).parseHtml()
-		val info = doc.body().selectFirst("div.single_detail") ?: parseFailed("An error occurred while parsing")
-		val table = doc.body().selectFirst("div.single-grid-right") ?: parseFailed("An error occurred while parsing")
+		val info = doc.body().selectFirstOrThrow("div.single_detail")
+		val table = doc.body().selectFirstOrThrow("div.single-grid-right")
 		val dateFormat = SimpleDateFormat("MM/dd/yyyy", Locale.US)
 		val trRegex = "window\\['tr'] = '([^']*)';".toRegex(RegexOption.IGNORE_CASE)
-		val trElement =
-			doc.getElementsByTag("script").find { trRegex.find(it.data()) != null } ?: parseFailed("Oops, tr not found")
+		val trElement = doc.getElementsByTag("script").find { trRegex.find(it.data()) != null }
+			?: doc.parseFailed("Oops, tr not found")
 		val tr = trRegex.find(trElement.data())!!.groups[1]!!.value
 		val s = context.encodeBase64(getDomain().toByteArray())
 		var isNsfw = manga.isNsfw
@@ -115,7 +114,7 @@ internal class MangaOwlParser(override val context: MangaLoaderContext) : MangaP
 				.asReversed().mapChapters { i, li ->
 					val a = li.select("a")
 					val href = a.attr("data-href").ifEmpty {
-						parseFailed("Link is missing")
+						li.parseFailed("Link is missing")
 					}
 					MangaChapter(
 						id = generateUid(href),
@@ -134,9 +133,9 @@ internal class MangaOwlParser(override val context: MangaLoaderContext) : MangaP
 	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> {
 		val fullUrl = chapter.url.toAbsoluteUrl(getDomain())
 		val doc = context.httpGet(fullUrl).parseHtml()
-		val root = doc.body().select("div.item img.owl-lazy") ?: throw ParseException("Root not found")
+		val root = doc.body().selectOrThrow("div.item img.owl-lazy")
 		return root.map { div ->
-			val url = div?.attrAsRelativeUrlOrNull("data-src") ?: parseFailed("Page image not found")
+			val url = div?.attrAsRelativeUrlOrNull("data-src") ?: doc.parseFailed("Page image not found")
 			MangaPage(
 				id = generateUid(url),
 				url = url,
@@ -158,7 +157,7 @@ internal class MangaOwlParser(override val context: MangaLoaderContext) : MangaP
 		val doc = context.httpGet("https://${getDomain()}/").parseHtml()
 		val root = doc.body().select("ul.dropdown-menu.multi-column.columns-3").select("li")
 		return root.mapToSet { p ->
-			val a = p.selectFirst("a") ?: parseFailed("a is null")
+			val a = p.selectFirstOrThrow("a")
 			MangaTag(
 				title = a.text().toTitleCase(),
 				key = a.attr("href"),
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/MangaTownParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/MangaTownParser.kt
@@ -4,7 +4,6 @@ import org.koitharu.kotatsu.parsers.MangaLoaderContext
 import org.koitharu.kotatsu.parsers.MangaParser
 import org.koitharu.kotatsu.parsers.MangaSourceParser
 import org.koitharu.kotatsu.parsers.config.ConfigKey
-import org.koitharu.kotatsu.parsers.exception.ParseException
 import org.koitharu.kotatsu.parsers.model.*
 import org.koitharu.kotatsu.parsers.util.*
 import java.text.DateFormat
@@ -55,8 +54,7 @@ internal class MangaTownParser(override val context: MangaLoaderContext) : Manga
 			}
 		}
 		val doc = context.httpGet(url).parseHtml()
-		val root = doc.body().selectFirst("ul.manga_pic_list")
-			?: throw ParseException("Root not found")
+		val root = doc.body().selectFirstOrThrow("ul.manga_pic_list")
 		return root.select("li").mapNotNull { li ->
 			val a = li.selectFirst("a.manga_cover")
 			val href = a?.attrAsRelativeUrlOrNull("href")
@@ -96,8 +94,8 @@ internal class MangaTownParser(override val context: MangaLoaderContext) : Manga

 	override suspend fun getDetails(manga: Manga): Manga {
 		val doc = context.httpGet(manga.url.toAbsoluteUrl(getDomain())).parseHtml()
-		val root = doc.body().selectFirst("section.main")
-			?.selectFirst("div.article_content") ?: throw ParseException("Cannot find root")
+		val root = doc.body().selectFirstOrThrow("section.main")
+			.selectFirstOrThrow("div.article_content")
 		val info = root.selectFirst("div.detail_info")?.selectFirst("ul")
 		val chaptersList = root.selectFirst("div.chapter_content")
 			?.selectFirst("ul.chapter_list")?.select("li")?.asReversed()
@@ -139,9 +137,8 @@ internal class MangaTownParser(override val context: MangaLoaderContext) : Manga
 	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> {
 		val fullUrl = chapter.url.toAbsoluteUrl(getDomain())
 		val doc = context.httpGet(fullUrl).parseHtml()
-		val root = doc.body().selectFirst("div.page_select")
-			?: throw ParseException("Cannot find root")
-		return root.selectFirst("select")?.select("option")?.mapNotNull {
+		val root = doc.body().selectFirstOrThrow("div.page_select")
+		return root.selectFirstOrThrow("select").selectOrThrow("option").mapNotNull {
 			val href = it.attrAsRelativeUrlOrNull("value")
 			if (href == null || href.endsWith("featured.html")) {
 				return@mapNotNull null
@@ -153,12 +150,12 @@ internal class MangaTownParser(override val context: MangaLoaderContext) : Manga
 				referer = fullUrl,
 				source = MangaSource.MANGATOWN,
 			)
-		} ?: parseFailed("Pages list not found")
+		}
 	}

 	override suspend fun getPageUrl(page: MangaPage): String {
 		val doc = context.httpGet(page.url.toAbsoluteUrl(getDomain())).parseHtml()
-		return doc.getElementById("image")?.absUrl("src") ?: parseFailed("Image not found")
+		return doc.requireElementById("image").attrAsAbsoluteUrl("src")
 	}

 	override suspend fun getTags(): Set<MangaTag> {
@@ -166,7 +163,7 @@ internal class MangaTownParser(override val context: MangaLoaderContext) : Manga
 		val root = doc.body().selectFirst("aside.right")
 			?.getElementsContainingOwnText("Genres")
 			?.first()
-			?.nextElementSibling() ?: parseFailed("Root not found")
+			?.nextElementSibling() ?: doc.parseFailed("Root not found")
 		return root.select("li").mapNotNullToSet { li ->
 			val a = li.selectFirst("a") ?: return@mapNotNullToSet null
 			val key = a.attr("href").parseTagKey()
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/NHentaiParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/NHentaiParser.kt
@@ -6,8 +6,8 @@ import kotlinx.coroutines.awaitAll
 import kotlinx.coroutines.coroutineScope
 import org.jsoup.nodes.Element
 import org.koitharu.kotatsu.parsers.MangaLoaderContext
-import org.koitharu.kotatsu.parsers.MangaParser
 import org.koitharu.kotatsu.parsers.MangaSourceParser
+import org.koitharu.kotatsu.parsers.PagedMangaParser
 import org.koitharu.kotatsu.parsers.config.ConfigKey
 import org.koitharu.kotatsu.parsers.model.*
 import org.koitharu.kotatsu.parsers.util.*
@@ -15,7 +15,7 @@ import java.text.SimpleDateFormat
 import java.util.*

@MangaSourceParser("NHENTAI", "N-Hentai")
-class NHentaiParser(override val context: MangaLoaderContext) : MangaParser(MangaSource.NHENTAI) {
+class NHentaiParser(override val context: MangaLoaderContext) : PagedMangaParser(MangaSource.NHENTAI, pageSize = 25) {

 	override val configKeyDomain: ConfigKey.Domain
 		get() = ConfigKey.Domain("nhentai.net", null)
@@ -23,17 +23,16 @@ class NHentaiParser(override val context: MangaLoaderContext) : MangaParser(Mang
 	override val sortOrders: Set<SortOrder>
 		get() = EnumSet.of(SortOrder.NEWEST, SortOrder.POPULARITY)

-	override suspend fun getList(
-		offset: Int,
+	override suspend fun getListPage(
+		page: Int,
 		query: String?,
 		tags: Set<MangaTag>?,
 		sortOrder: SortOrder,
 	): List<Manga> {
 		if (query.isNullOrEmpty() && tags != null && tags.size > 1) {
-			return getList(offset, buildQuery(tags), emptySet(), sortOrder)
+			return getListPage(page, buildQuery(tags), emptySet(), sortOrder)
 		}
 		val domain = getDomain()
-		val page = (offset / 25) + 1
 		val url = buildString {
 			append("https://")
 			append(domain)
@@ -67,8 +66,8 @@ class NHentaiParser(override val context: MangaLoaderContext) : MangaParser(Mang
 				}
 			}
 		}
-		val root = context.httpGet(url).parseHtml().body().getElementById("content")
-			?.selectLast("div.index-container") ?: parseFailed("Root not found")
+		val root = context.httpGet(url).parseHtml().body().requireElementById("content")
+			.selectLastOrThrow("div.index-container")
 		val regexBrackets = Regex("\\[[^]]+]|\\([^)]+\\)")
 		val regexSpaces = Regex("\\s+")
 		return root.select(".gallery").map { div ->
@@ -101,7 +100,7 @@ class NHentaiParser(override val context: MangaLoaderContext) : MangaParser(Mang

 	override suspend fun getDetails(manga: Manga): Manga {
 		val root = context.httpGet(
-			url = manga.url.toAbsoluteUrl(getDomain())
+			url = manga.url.toAbsoluteUrl(getDomain()),
 		).parseHtml().body().requireElementById("bigcontainer")
 		val img = root.requireElementById("cover").selectFirstOrThrow("img")
 		val tagContainers = root.requireElementById("tags").select(".tag-container")
@@ -126,12 +125,12 @@ class NHentaiParser(override val context: MangaLoaderContext) : MangaParser(Mang
 					uploadDate = dateFormat.tryParse(
 						tagContainers.find { x -> x.ownText() == "Uploaded:" }
 							?.selectFirst("time")
-							?.attr("datetime")
+							?.attr("datetime"),
 					),
 					branch = null,
 					source = source,
-				)
-			)
+				),
+			),
 		)
 	}

--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/NetTruyenParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/NetTruyenParser.kt
@@ -0,0 +1,221 @@
+package org.koitharu.kotatsu.parsers.site
+
+import androidx.collection.ArrayMap
+import androidx.collection.ArraySet
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import org.koitharu.kotatsu.parsers.*
+import org.koitharu.kotatsu.parsers.config.ConfigKey
+import org.koitharu.kotatsu.parsers.exception.NotFoundException
+import org.koitharu.kotatsu.parsers.model.*
+import org.koitharu.kotatsu.parsers.util.*
+import java.text.SimpleDateFormat
+import java.util.*
+
+@MangaSourceParser("NETTRUYEN", "NetTruyen", "vi")
+class NetTruyenParser(override val context: MangaLoaderContext) :
+	PagedMangaParser(MangaSource.NETTRUYEN, pageSize = 36) {
+
+	override val configKeyDomain: ConfigKey.Domain
+		get() = ConfigKey.Domain("www.nettruyenme.com", null)
+
+	override val sortOrders: Set<SortOrder>
+		get() = EnumSet.of(SortOrder.UPDATED, SortOrder.POPULARITY, SortOrder.NEWEST, SortOrder.RATING)
+
+	private val mutex = Mutex()
+	private val dateFormat = SimpleDateFormat("dd/MM/yy", Locale.US)
+	private var tagCache: ArrayMap<String, MangaTag>? = null
+
+	override suspend fun getDetails(manga: Manga): Manga {
+		val doc = context.httpGet(manga.url.toAbsoluteUrl(getDomain())).parseHtml()
+		val rating = doc.selectFirst("span[itemprop=ratingValue]")
+			?.ownText()
+			?.toFloatOrNull() ?: 0f
+
+		val chapterElements = doc.getElementById("nt_listchapter")?.select("ul > li") ?: doc.parseFailed()
+		val chapters = chapterElements.asReversed().mapChapters { index, element ->
+			val a = element.selectFirst("div.chapter > a") ?: return@mapChapters null
+			val relativeUrl = a.attrAsRelativeUrlOrNull("href") ?: return@mapChapters null
+			val timeText = element.selectFirst("div.col-xs-4.text-center.no-wrap.small")?.text()
+
+			MangaChapter(
+				id = generateUid(relativeUrl),
+				name = a.text(),
+				number = index + 1,
+				url = relativeUrl,
+				scanlator = null,
+				uploadDate = parseChapterTime(timeText),
+				branch = null,
+				source = source,
+			)
+		}
+
+		return manga.copy(
+			rating = rating / 5,
+			chapters = chapters,
+			description = doc.selectFirst("div.detail-content > p")?.html(),
+			isNsfw = doc.selectFirst("div.alert.alert-danger > strong:contains(Cảnh báo độ tuổi)") != null,
+		)
+	}
+
+	// 20 giây trước
+	// 52 phút trước
+	// 6 giờ trước
+	// 2 ngày trước
+	// 19:09 30/07
+	// 23/12/21
+	private fun parseChapterTime(timeText: String?): Long {
+		if (timeText.isNullOrEmpty()) {
+			return 0L
+		}
+
+		val timeWords = arrayOf("giây", "phút", "giờ", "ngày")
+		val calendar = Calendar.getInstance()
+		val timeArr = timeText.split(' ')
+		if (WordSet(*timeWords).anyWordIn(timeText)) {
+			val timeSuffix = timeArr.getOrNull(1)
+			val timeDiff = timeArr.getOrNull(0)?.toIntOrNull() ?: return 0L
+			when (timeSuffix) {
+				timeWords[0] -> calendar.add(Calendar.SECOND, -timeDiff)
+				timeWords[1] -> calendar.add(Calendar.MINUTE, -timeDiff)
+				timeWords[2] -> calendar.add(Calendar.HOUR, -timeDiff)
+				timeWords[3] -> calendar.add(Calendar.DATE, -timeDiff)
+				else -> return 0L
+			}
+		} else {
+			val relativeDate = timeArr.lastOrNull() ?: return 0L
+			val dateString = when (relativeDate.split('/').size) {
+				2 -> {
+					val currentYear = calendar.get(Calendar.YEAR).toString().takeLast(2)
+					"$relativeDate/$currentYear"
+				}
+				3 -> relativeDate
+				else -> return 0L
+			}
+
+			calendar.timeInMillis = dateFormat.tryParse(dateString)
+		}
+
+
+		return calendar.time.time
+	}
+
+	override suspend fun getListPage(
+		page: Int,
+		query: String?,
+		tags: Set<MangaTag>?,
+		sortOrder: SortOrder,
+	): List<Manga> {
+		val isSearching = !query.isNullOrEmpty()
+		val url = buildString {
+			append("https://")
+			append(getDomain())
+			if (isSearching) {
+				append("/tim-truyen?keyword=")
+				append(query!!.urlEncoded())
+				append("&page=")
+				append(page)
+			} else {
+				val tagQuery = tags.orEmpty().joinToString(",") { it.key }
+				append("/tim-truyen-nang-cao?genres=$tagQuery")
+				append("&notgenres=&gender=-1&status=-1&minchapter=1&sort=${getSortOrderKey(sortOrder)}")
+				append("&page=$page")
+			}
+		}
+
+		val response = if (isSearching) {
+			val result = runCatching { context.httpGet(url) }
+			val exception = result.exceptionOrNull()
+			if (exception is NotFoundException) {
+				return emptyList()
+			}
+
+			result.getOrThrow()
+		} else {
+			context.httpGet(url)
+		}
+
+		val itemsElements = response.parseHtml()
+			.select("div.ModuleContent > div.items")
+			.select("div.item")
+		return itemsElements.mapNotNull { item ->
+			val tooltipElement = item.selectFirst("div.box_tootip") ?: return@mapNotNull null
+			val absUrl = item.selectFirst("div.image > a")?.attrAsAbsoluteUrlOrNull("href") ?: return@mapNotNull null
+			val slug = absUrl.substringAfterLast('/')
+			val mangaState = when (tooltipElement.selectFirst("div.message_main > p:contains(Tình trạng)")?.ownText()) {
+				"Đang tiến hành" -> MangaState.ONGOING
+				"Hoàn thành" -> MangaState.FINISHED
+				else -> null
+			}
+
+			val tagMap = getOrCreateTagMap()
+			val tagsElement = tooltipElement.selectFirst("div.message_main > p:contains(Thể loại)")?.ownText().orEmpty()
+			val mangaTags = tagsElement.split(',').mapNotNullToSet { tagMap[it.trim()] }
+			Manga(
+				id = generateUid(slug),
+				title = tooltipElement.selectFirst("div.title")?.text().orEmpty(),
+				altTitle = null,
+				url = absUrl.toRelativeUrl(getDomain()),
+				publicUrl = absUrl,
+				rating = RATING_UNKNOWN,
+				isNsfw = false,
+				coverUrl = item.selectFirst("div.image a img")?.absUrl("data-original").orEmpty(),
+				largeCoverUrl = null,
+				tags = mangaTags,
+				state = mangaState,
+				author = tooltipElement.selectFirst("div.message_main > p:contains(Tác giả)")?.ownText(),
+				description = tooltipElement.selectFirst("div.box_text")?.text(),
+				chapters = null,
+				source = source,
+			)
+		}
+	}
+
+
+	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> {
+		val pageElements = context.httpGet(chapter.url.toAbsoluteUrl(getDomain())).parseHtml()
+			.select("div.reading-detail.box_doc > div img")
+		return pageElements.map { element ->
+			val url = element.attrAsAbsoluteUrl("data-original")
+			MangaPage(
+				id = generateUid(url),
+				url = url,
+				referer = getDomain(),
+				preview = null,
+				source = source,
+			)
+		}
+	}
+
+	override suspend fun getTags(): Set<MangaTag> {
+		val map = getOrCreateTagMap()
+		val tagSet = ArraySet<MangaTag>(map.size)
+		for (entry in map) {
+			tagSet.add(entry.value)
+		}
+
+		return tagSet
+	}
+
+	private suspend fun getOrCreateTagMap(): ArrayMap<String, MangaTag> = mutex.withLock {
+		tagCache?.let { return@withLock it }
+		val doc = context.httpGet("/tim-truyen-nang-cao".toAbsoluteUrl(getDomain())).parseHtml()
+		val tagItems = doc.select("div.genre-item")
+		val result = ArrayMap<String, MangaTag>(tagItems.size)
+		for (item in tagItems) {
+			val title = item.text().trim()
+			val key = item.select("span[data-id]").attr("data-id")
+			result[title] = MangaTag(title = title, key = key, source = source)
+		}
+		tagCache = result
+		result
+	}
+
+	private fun getSortOrderKey(sortOrder: SortOrder) = when (sortOrder) {
+		SortOrder.UPDATED -> 0
+		SortOrder.POPULARITY -> 10
+		SortOrder.NEWEST -> 15
+		SortOrder.RATING -> 20
+		else -> throw IllegalArgumentException("Sort order ${sortOrder.name} not supported")
+	}
+}
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/NicovideoSeigaParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/NicovideoSeigaParser.kt
@@ -54,7 +54,7 @@ class NicovideoSeigaParser(override val context: MangaLoaderContext) :
 			else -> "https://$domain/manga/list?page=$page&sort=${getSortKey(sortOrder)}"
 		}
 		val doc = context.httpGet(url).parseHtml()
-		val comicList = doc.body().select("#comic_list > ul > li") ?: parseFailed("Container not found")
+		val comicList = doc.body().select("#comic_list > ul > li") ?: doc.parseFailed("Container not found")
 		val items = comicList.select("div > .description > div > div")
 		return items.mapNotNull { item ->
 			val href =
@@ -89,7 +89,7 @@ class NicovideoSeigaParser(override val context: MangaLoaderContext) :

 	override suspend fun getDetails(manga: Manga): Manga {
 		val doc = context.httpGet(manga.url.toAbsoluteUrl(getDomain("seiga"))).parseHtml()
-		val contents = doc.body().selectFirst("#contents") ?: parseFailed("Cannot find root")
+		val contents = doc.body().selectFirstOrThrow("#contents")
 		val statusText = contents
 			.select("div.mg_work_detail > div > div:nth-child(2) > div.tip.content_status.status_series > span")
 			.text()
@@ -105,7 +105,7 @@ class NicovideoSeigaParser(override val context: MangaLoaderContext) :
 			isNsfw = contents.select(".icon_adult").isNotEmpty(),
 			chapters = contents.select("#episode_list > ul > li").mapChapters { i, li ->
 				val href = li.selectFirst("div > div.description > div.title > a")
-					?.attrAsRelativeUrl("href") ?: parseFailed()
+					?.attrAsRelativeUrl("href") ?: li.parseFailed()
 				MangaChapter(
 					id = generateUid(href),
 					name = li.select("div > div.description > div.title > a").text(),
@@ -140,9 +140,9 @@ class NicovideoSeigaParser(override val context: MangaLoaderContext) :

 	override suspend fun getTags(): Set<MangaTag> {
 		val doc = context.httpGet("https://${getDomain("seiga")}/manga/list").parseHtml()
-		val root = doc.body().select("#mg_category_list > ul > li") ?: parseFailed("Cannot find tags")
+		val root = doc.body().selectOrThrow("#mg_category_list > ul > li")
 		return root.mapToSet { li ->
-			val a = li.selectFirst("a") ?: parseFailed("a is null")
+			val a = li.selectFirstOrThrow("a")
 			MangaTag(
 				title = a.text(),
 				key = a.attrAsRelativeUrlOrNull("href").orEmpty(),
@@ -157,7 +157,7 @@ class NicovideoSeigaParser(override val context: MangaLoaderContext) :
 		val root = doc.body().select(".search_result__item")
 		return root.mapNotNull { item ->
 			val href = item.selectFirst(".search_result__item__thumbnail > a")
-				?.attrAsRelativeUrl("href") ?: parseFailed()
+				?.attrAsRelativeUrl("href") ?: doc.parseFailed()
 			Manga(
 				id = generateUid(href),
 				url = href,
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/NineMangaParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/NineMangaParser.kt
@@ -3,22 +3,19 @@ package org.koitharu.kotatsu.parsers.site
 import okhttp3.Headers
 import okhttp3.HttpUrl.Companion.toHttpUrl
 import org.koitharu.kotatsu.parsers.MangaLoaderContext
-import org.koitharu.kotatsu.parsers.MangaParser
 import org.koitharu.kotatsu.parsers.MangaSourceParser
+import org.koitharu.kotatsu.parsers.PagedMangaParser
 import org.koitharu.kotatsu.parsers.config.ConfigKey
-import org.koitharu.kotatsu.parsers.exception.ParseException
 import org.koitharu.kotatsu.parsers.model.*
 import org.koitharu.kotatsu.parsers.util.*
 import java.text.SimpleDateFormat
 import java.util.*

-private const val PAGE_SIZE = 26
-
 internal abstract class NineMangaParser(
 	final override val context: MangaLoaderContext,
 	source: MangaSource,
 	defaultDomain: String,
-) : MangaParser(source) {
+) : PagedMangaParser(source, pageSize = 26) {

 	override val configKeyDomain = ConfigKey.Domain(defaultDomain, null)

@@ -34,13 +31,12 @@ internal abstract class NineMangaParser(
 		SortOrder.POPULARITY,
 	)

-	override suspend fun getList(
-		offset: Int,
+	override suspend fun getListPage(
+		page: Int,
 		query: String?,
 		tags: Set<MangaTag>?,
 		sortOrder: SortOrder,
 	): List<Manga> {
-		val page = (offset / PAGE_SIZE.toFloat()).toIntUp() + 1
 		val url = buildString {
 			append("https://")
 			append(getDomain())
@@ -69,11 +65,11 @@ internal abstract class NineMangaParser(
 		}
 		val doc = context.httpGet(url, headers).parseHtml()
 		val root = doc.body().selectFirst("ul.direlist")
-			?: throw ParseException("Cannot find root")
+			?: doc.parseFailed("Cannot find root")
 		val baseHost = root.baseUri().toHttpUrl().host
 		return root.select("li").map { node ->
 			val href = node.selectFirst("a")?.absUrl("href")
-				?: parseFailed("Link not found")
+				?: node.parseFailed("Link not found")
 			val relUrl = href.toRelativeUrl(baseHost)
 			val dd = node.selectFirst("dd")
 			Manga(
@@ -99,10 +95,8 @@ internal abstract class NineMangaParser(
 			manga.url.toAbsoluteUrl(getDomain()) + "?waring=1",
 			headers,
 		).parseHtml()
-		val root = doc.body().selectFirst("div.manga")
-			?: throw ParseException("Cannot find root")
-		val infoRoot = root.selectFirst("div.bookintro")
-			?: throw ParseException("Cannot find info")
+		val root = doc.body().selectFirstOrThrow("div.manga")
+		val infoRoot = root.selectFirstOrThrow("div.bookintro")
 		return manga.copy(
 			tags = infoRoot.getElementsByAttributeValue("itemprop", "genre").first()
 				?.select("a")?.mapToSet { a ->
@@ -120,7 +114,7 @@ internal abstract class NineMangaParser(
 				?.asReversed()?.mapChapters { i, li ->
 					val a = li.selectFirst("a.chapter_list_a")
 					val href = a?.attrAsRelativeUrlOrNull("href")
-						?.replace("%20", " ") ?: parseFailed("Link not found")
+						?.replace("%20", " ") ?: li.parseFailed("Link not found")
 					MangaChapter(
 						id = generateUid(href),
 						name = a.text(),
@@ -146,14 +140,14 @@ internal abstract class NineMangaParser(
 				preview = null,
 				source = source,
 			)
-		} ?: throw ParseException("Pages list not found at ${chapter.url}")
+		} ?: doc.parseFailed("Pages list not found")
 	}

 	override suspend fun getPageUrl(page: MangaPage): String {
 		val doc = context.httpGet(page.url.toAbsoluteUrl(getDomain()), headers).parseHtml()
 		val root = doc.body()
 		return root.selectFirst("a.pic_download")?.absUrl("href")
-			?: throw ParseException("Page image not found")
+			?: doc.parseFailed("Page image not found")
 	}

 	override suspend fun getTags(): Set<MangaTag> {
@@ -168,7 +162,7 @@ internal abstract class NineMangaParser(
 				key = cateId,
 				source = source,
 			)
-		} ?: parseFailed("Root not found")
+		} ?: doc.parseFailed("Root not found")
 	}

 	private fun parseStatus(status: String) = when {
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/NudeMoonParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/NudeMoonParser.kt
@@ -6,7 +6,6 @@ import org.koitharu.kotatsu.parsers.MangaParserAuthProvider
 import org.koitharu.kotatsu.parsers.MangaSourceParser
 import org.koitharu.kotatsu.parsers.config.ConfigKey
 import org.koitharu.kotatsu.parsers.exception.AuthRequiredException
-import org.koitharu.kotatsu.parsers.exception.ParseException
 import org.koitharu.kotatsu.parsers.model.*
 import org.koitharu.kotatsu.parsers.util.*
 import java.text.SimpleDateFormat
@@ -59,12 +58,13 @@ internal class NudeMoonParser(
 				postfix = "&rowstart=$offset",
 				transform = { it.key.urlEncoded() },
 			)
+
 			else -> "https://$domain/all_manga?${getSortKey(sortOrder)}&rowstart=$offset"
 		}
 		val doc = context.httpGet(url).parseHtml()
 		val root = doc.body().run {
 			selectFirst("td.main-bg") ?: selectFirst("td.main-body")
-		} ?: parseFailed("Cannot find root")
+		} ?: doc.parseFailed("Cannot find root")
 		return root.select("table.news_pic2").mapNotNull { row ->
 			val a = row.selectFirst("td.bg_style1")?.selectFirst("a")
 				?: return@mapNotNull null
@@ -102,7 +102,7 @@ internal class NudeMoonParser(
 	override suspend fun getDetails(manga: Manga): Manga {
 		val body = context.httpGet(manga.url.toAbsoluteUrl(getDomain())).parseHtml().body()
 		val root = body.selectFirst("table.shoutbox")
-			?: parseFailed("Cannot find root")
+			?: body.parseFailed("Cannot find root")
 		val info = root.select("div.tbl2")
 		val lastInfo = info.last()
 		return manga.copy(
@@ -143,7 +143,7 @@ internal class NudeMoonParser(
 		val script = doc.select("script").firstNotNullOfOrNull {
 			it.html().takeIf { x -> x.contains(" images = new ") }
 		} ?: if (isAuthorized) {
-			parseFailed("Cannot find pages list")
+			doc.parseFailed("Cannot find pages list")
 		} else {
 			throw AuthRequiredException(source)
 		}
@@ -174,7 +174,7 @@ internal class NudeMoonParser(
 		val root = doc.body().getElementsContainingOwnText("Поиск манги по тегам")
 			.firstOrNull()?.parents()?.find { it.tag().normalName() == "tbody" }
 			?.selectFirst("td.textbox")?.selectFirst("td.small")
-			?: parseFailed("Tags root not found")
+			?: doc.parseFailed("Tags root not found")
 		return root.select("a").mapToSet {
 			MangaTag(
 				title = it.text().toTitleCase(),
@@ -197,7 +197,7 @@ internal class NudeMoonParser(
 				throw if (body.selectFirst("form[name=\"loginform\"]") != null) {
 					AuthRequiredException(source)
 				} else {
-					ParseException("Cannot find username")
+					body.parseFailed("Cannot find username")
 				}
 			}
 	}
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/RemangaParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/RemangaParser.kt
@@ -6,11 +6,12 @@ import org.json.JSONArray
 import org.json.JSONException
 import org.json.JSONObject
 import org.koitharu.kotatsu.parsers.MangaLoaderContext
-import org.koitharu.kotatsu.parsers.MangaParser
 import org.koitharu.kotatsu.parsers.MangaParserAuthProvider
 import org.koitharu.kotatsu.parsers.MangaSourceParser
+import org.koitharu.kotatsu.parsers.PagedMangaParser
 import org.koitharu.kotatsu.parsers.config.ConfigKey
 import org.koitharu.kotatsu.parsers.exception.AuthRequiredException
+import org.koitharu.kotatsu.parsers.exception.ContentUnavailableException
 import org.koitharu.kotatsu.parsers.exception.ParseException
 import org.koitharu.kotatsu.parsers.model.*
 import org.koitharu.kotatsu.parsers.util.*
@@ -31,7 +32,7 @@ private const val STATUS_FINISHED = 0
@MangaSourceParser("REMANGA", "Remanga", "ru")
 internal class RemangaParser(
 	override val context: MangaLoaderContext,
-) : MangaParser(MangaSource.REMANGA), MangaParserAuthProvider {
+) : PagedMangaParser(MangaSource.REMANGA, PAGE_SIZE), MangaParserAuthProvider {

 	override val configKeyDomain = ConfigKey.Domain("remanga.org", null)
 	override val authUrl: String
@@ -53,8 +54,8 @@ internal class RemangaParser(

 	private val regexLastUrlPath = Regex("/[^/]+/?$")

-	override suspend fun getList(
-		offset: Int,
+	override suspend fun getListPage(
+		page: Int,
 		query: String?,
 		tags: Set<MangaTag>?,
 		sortOrder: SortOrder,
@@ -77,7 +78,7 @@ internal class RemangaParser(
 		}
 		urlBuilder
 			.append("&page=")
-			.append((offset / PAGE_SIZE) + 1)
+			.append(page)
 			.append("&count=")
 			.append(PAGE_SIZE)
 		val content = context.httpGet(urlBuilder.toString(), getApiHeaders()).parseJson()
@@ -113,18 +114,18 @@ internal class RemangaParser(
 		copyCookies()
 		val domain = getDomain()
 		val slug = manga.url.find(regexLastUrlPath)
-			?: throw ParseException("Cannot obtain slug from ${manga.url}")
+			?: throw ParseException("Cannot obtain slug from ${manga.url}", manga.publicUrl)
 		val data = context.httpGet(
-			url = "https://api.$domain/api/titles/$slug/",
+			url = "https://api.$domain/api/titles$slug/",
 			headers = getApiHeaders(),
 		).handle401().parseJson()
 		val content = try {
 			data.getJSONObject("content")
 		} catch (e: JSONException) {
-			throw ParseException(data.optString("msg"), e)
+			throw ParseException(data.optString("msg"), manga.publicUrl, e)
 		}
 		val branchId = content.getJSONArray("branches").optJSONObject(0)
-			?.getLong("id") ?: throw ParseException("No branches found")
+			?.getLong("id") ?: throw ParseException("No branches found", manga.publicUrl)
 		val chapters = grabChapters(domain, branchId)
 		val dateFormat = SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss", Locale.US)
 		return manga.copy(
@@ -182,9 +183,9 @@ internal class RemangaParser(
 			}
 			if (pubDate != null && pubDate > System.currentTimeMillis()) {
 				val at = SimpleDateFormat.getDateInstance(DateFormat.LONG).format(Date(pubDate))
-				parseFailed("Глава станет доступной $at")
+				throw ContentUnavailableException("Глава станет доступной $at")
 			} else {
-				parseFailed("Глава недоступна")
+				throw ContentUnavailableException("Глава недоступна")
 			}
 		}
 		val result = ArrayList<MangaPage>(pages.length())
@@ -192,7 +193,7 @@ internal class RemangaParser(
 			when (val item = pages.get(i)) {
 				is JSONObject -> result += parsePage(item, referer)
 				is JSONArray -> item.mapJSONTo(result) { parsePage(it, referer) }
-				else -> throw ParseException("Unknown json item $item")
+				else -> throw ParseException("Unknown json item $item", chapter.url)
 			}
 		}
 		return result
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/UnionMangasParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/UnionMangasParser.kt
@@ -0,0 +1,177 @@
+package org.koitharu.kotatsu.parsers.site
+
+import org.jsoup.nodes.Element
+import org.koitharu.kotatsu.parsers.MangaLoaderContext
+import org.koitharu.kotatsu.parsers.MangaSourceParser
+import org.koitharu.kotatsu.parsers.PagedMangaParser
+import org.koitharu.kotatsu.parsers.config.ConfigKey
+import org.koitharu.kotatsu.parsers.model.*
+import org.koitharu.kotatsu.parsers.util.*
+import org.koitharu.kotatsu.parsers.util.json.getStringOrNull
+import org.koitharu.kotatsu.parsers.util.json.mapJSON
+import java.text.SimpleDateFormat
+import java.util.*
+
+@MangaSourceParser("UNION_MANGAS", "Union Mangás", "pt")
+class UnionMangasParser(override val context: MangaLoaderContext) : PagedMangaParser(MangaSource.UNION_MANGAS, 40) {
+
+	override val sortOrders = EnumSet.of(
+		SortOrder.ALPHABETICAL,
+		SortOrder.POPULARITY,
+	)
+
+	override val configKeyDomain = ConfigKey.Domain("unionleitor.top", emptyArray())
+
+	override suspend fun getListPage(
+		page: Int,
+		query: String?,
+		tags: Set<MangaTag>?,
+		sortOrder: SortOrder,
+	): List<Manga> {
+		if (!query.isNullOrEmpty()) {
+			return if (page == searchPaginator.firstPage) {
+				search(query)
+			} else {
+				emptyList()
+			}
+		}
+		val tag = tags.oneOrThrowIfMany()
+		val url = urlBuilder()
+			.addPathSegment("lista-mangas")
+			.addPathSegment(
+				when {
+					tag != null -> tag.key
+					sortOrder == SortOrder.ALPHABETICAL -> "a-z"
+					else -> "visualizacoes"
+				},
+			).addPathSegment(page.toString())
+		val doc = context.httpGet(url.build()).parseHtml()
+		val root = doc.selectFirstOrThrow("div.tamanho-bloco-perfil")
+		return root.select(".lista-mangas-novos").map { div ->
+			val a = div.selectFirstOrThrow("a")
+			val img = div.selectFirstOrThrow("img")
+			val href = a.attrAsRelativeUrl("href")
+			Manga(
+				id = generateUid(href),
+				url = href,
+				publicUrl = a.attrAsAbsoluteUrl("href"),
+				title = div.selectLastOrThrow("a").text(),
+				coverUrl = img.attrAsAbsoluteUrl("src"),
+				altTitle = null,
+				rating = RATING_UNKNOWN,
+				tags = emptySet(),
+				description = div.selectLast("div")?.ownText(),
+				state = null,
+				author = null,
+				isNsfw = false,
+				source = source,
+			)
+		}
+	}
+
+	override suspend fun getDetails(manga: Manga): Manga {
+		val doc = context.httpGet(manga.url.toAbsoluteUrl(getDomain())).parseHtml()
+		val root = doc.selectFirstOrThrow(".perfil-manga")
+		val dateFormat = SimpleDateFormat("dd/MM/yyyy", Locale.ROOT)
+		return manga.copy(
+			rating = root.select("h2")
+				.find { it.ownText().startsWith('#') }
+				?.ownText()?.drop(1)?.toFloatOrNull()?.div(10f) ?: manga.rating,
+			largeCoverUrl = root.selectFirst("img.img-thumbnail")?.attrAsAbsoluteUrlOrNull("src"),
+			description = root.selectFirst(".panel-default")?.selectFirst(".panel-body")?.html(),
+			author = root.tableValue("Autor")?.ownText(),
+			altTitle = root.tableValue("Título(s) Alternativo(s)")?.ownText(),
+			state = when (root.tableValue("Status")?.selectLast(".label")?.text()) {
+				"Completo" -> MangaState.FINISHED
+				"Ativo" -> MangaState.ONGOING
+				else -> null
+			},
+			tags = root.tableValue("Gênero(s)")?.select("a")?.mapToSet {
+				it.toMangaTag()
+			} ?: manga.tags,
+			isNsfw = root.selectFirst(".alert-danger")?.html()?.contains("18 anos") == true,
+			chapters = root.select("div.row.capitulos").asReversed().mapChapters { i, div ->
+				val a = div.selectFirstOrThrow("a")
+				val href = a.attrAsRelativeUrl("href")
+				val title = a.text()
+				MangaChapter(
+					id = generateUid(href),
+					name = title,
+					number = i + 1,
+					url = href,
+					scanlator = div.selectLast("a")?.text()?.takeUnless { it == title },
+					uploadDate = dateFormat.tryParse(
+						a.nextElementSibling()?.text()?.removeSurrounding('(', ')'),
+					),
+					branch = null,
+					source = source,
+				)
+			},
+		)
+	}
+
+	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> {
+		val fullUrl = chapter.url.toAbsoluteUrl(getDomain())
+		val doc = context.httpGet(fullUrl).parseHtml()
+		val root = doc.body().selectFirstOrThrow("article")
+		return root.selectOrThrow("img[pag]").mapNotNull { img ->
+			val href = img.attrAsRelativeUrl("src")
+			if (href.startsWith("/images/banner")) {
+				return@mapNotNull null
+			}
+			MangaPage(
+				id = generateUid(href),
+				url = href,
+				referer = fullUrl,
+				preview = null,
+				source = source,
+			)
+		}
+	}
+
+	override suspend fun getTags(): Set<MangaTag> {
+		val doc = context.httpGet(urlBuilder().addPathSegment("lista-mangas").build()).parseHtml()
+		val ul = doc.body().selectFirstOrThrow(".nav-tabs").selectFirstOrThrow("ul.dropdown-menu")
+		return ul.select("li").mapToSet { li ->
+			li.selectFirstOrThrow("a").toMangaTag()
+		}
+	}
+
+	private suspend fun search(query: String): List<Manga> {
+		val domain = getDomain()
+		val json = context.httpGet(
+			urlBuilder()
+				.addPathSegments("assets/busca.php")
+				.addQueryParameter("nomeManga", query)
+				.build(),
+		).parseJson()
+		return json.getJSONArray("items").mapJSON { jo ->
+			val href = "/pagina-manga/" + jo.getString("url")
+			Manga(
+				id = generateUid(href),
+				url = href,
+				publicUrl = href.toAbsoluteUrl(domain),
+				title = jo.getString("titulo"),
+				rating = RATING_UNKNOWN,
+				tags = emptySet(),
+				author = jo.getStringOrNull("autor"),
+				coverUrl = jo.getString("imagem"),
+				state = null,
+				isNsfw = false,
+				altTitle = null,
+				source = source,
+			)
+		}
+	}
+
+	private fun Element.tableValue(title: String): Element? {
+		return select("h4.media-heading")
+			.find { it.selectFirst("label.subtit-manga")?.text()?.contains(title, ignoreCase = true) == true }
+	}
+
+	private fun Element.toMangaTag() = MangaTag(
+		title = text().toTitleCase(sourceLocale ?: Locale.ROOT),
+		key = attr("href").removeSuffix('/').substringAfterLast('/'),
+		source = source,
+	)
+}
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/grouple/GroupleParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/grouple/GroupleParser.kt
@@ -7,6 +7,7 @@ import org.json.JSONArray
 import org.koitharu.kotatsu.parsers.MangaParser
 import org.koitharu.kotatsu.parsers.MangaParserAuthProvider
 import org.koitharu.kotatsu.parsers.exception.AuthRequiredException
+import org.koitharu.kotatsu.parsers.exception.ParseException
 import org.koitharu.kotatsu.parsers.model.*
 import org.koitharu.kotatsu.parsers.util.*
 import org.koitharu.kotatsu.parsers.util.json.mapJSON
@@ -79,13 +80,13 @@ internal abstract class GroupleParser(
 			else -> advancedSearch(domain, tags)
 		}.parseHtml().body()
 		val root = (doc.getElementById("mangaBox") ?: doc.getElementById("mangaResults"))
-			?: parseFailed("Cannot find root")
+			?: doc.parseFailed("Cannot find root")
 		val tiles = root.selectFirst("div.tiles.row") ?: if (
 			root.select(".alert").any { it.ownText() == NOTHING_FOUND }
 		) {
 			return emptyList()
 		} else {
-			parseFailed("No tiles found")
+			doc.parseFailed("No tiles found")
 		}
 		val baseHost = root.baseUri().toHttpUrl().host
 		return tiles.select("div.tile").mapNotNull { node ->
@@ -110,11 +111,10 @@ internal abstract class GroupleParser(
 				altTitle = descDiv.selectFirst("h4")?.text(),
 				coverUrl = imgDiv.selectFirst("img.lazy")?.attr("data-original")?.replace("_p.", ".").orEmpty(),
 				rating = runCatching {
-					node.selectFirst("div.rating")
+					node.selectFirst(".compact-rate")
 						?.attr("title")
-						?.substringBefore(' ')
 						?.toFloatOrNull()
-						?.div(10f)
+						?.div(5f)
 				}.getOrNull() ?: RATING_UNKNOWN,
 				author = tileInfo?.selectFirst("a.person-link")?.text(),
 				isNsfw = false,
@@ -142,7 +142,7 @@ internal abstract class GroupleParser(
 	override suspend fun getDetails(manga: Manga): Manga {
 		val doc = context.httpGet(manga.url.toAbsoluteUrl(getDomain()), headers).parseHtml()
 		val root = doc.body().getElementById("mangaBox")?.selectFirst("div.leftContent")
-			?: parseFailed("Cannot find root")
+			?: doc.parseFailed("Cannot find root")
 		val dateFormat = SimpleDateFormat("dd.MM.yy", Locale.US)
 		val coverImg = root.selectFirst("div.subject-cover")?.selectFirst("img")
 		return manga.copy(
@@ -218,7 +218,7 @@ internal abstract class GroupleParser(
 				)
 			}
 		}
-		parseFailed("Pages list not found at ${chapter.url}")
+		doc.parseFailed("Pages list not found at ${chapter.url}")
 	}

 	override suspend fun getPageUrl(page: MangaPage): String {
@@ -232,14 +232,14 @@ internal abstract class GroupleParser(
 				return url
 			}
 		}
-		val fallbackServer = servers.firstOrNull() ?: parseFailed("Cannot find any page url")
+		val fallbackServer = servers.firstOrNull() ?: throw ParseException("Cannot find any page url", page.url)
 		return fallbackServer + path
 	}

 	override suspend fun getTags(): Set<MangaTag> {
 		val doc = context.httpGet("https://${getDomain()}/list/genres/sort_name", headers).parseHtml()
 		val root = doc.body().getElementById("mangaBox")?.selectFirst("div.leftContent")
-			?.selectFirst("table.table") ?: parseFailed("Cannot find root")
+			?.selectFirst("table.table") ?: doc.parseFailed("Cannot find root")
 		return root.select("a.element-link").mapToSet { a ->
 			MangaTag(
 				title = a.text().toTitleCase(),
@@ -254,7 +254,7 @@ internal abstract class GroupleParser(
 		val element = root.selectFirst("img.user-avatar") ?: throw AuthRequiredException(source)
 		val res = element.parent()?.text()
 		return if (res.isNullOrEmpty()) {
-			parseFailed("Cannot find username")
+			root.parseFailed("Cannot find username")
 		} else res
 	}

@@ -273,21 +273,21 @@ internal abstract class GroupleParser(
 		val tagsIndex = context.httpGet(url, headers).parseHtml()
 			.body().selectFirst("form.search-form")
 			?.select("div.form-group")
-			?.get(1) ?: parseFailed("Genres filter element not found")
+			?.get(1) ?: throw ParseException("Genres filter element not found", url)
 		val tagNames = tags.map { it.title.lowercase() }
 		val payload = HashMap<String, String>()
 		var foundGenres = 0
 		tagsIndex.select("li.property").forEach { li ->
 			val name = li.text().trim().lowercase()
 			val id = li.selectFirst("input")?.id()
-				?: parseFailed("Id for tag $name not found")
+				?: li.parseFailed("Id for tag $name not found")
 			payload[id] = if (name in tagNames) {
 				foundGenres++
 				"in"
 			} else ""
 		}
 		if (foundGenres != tags.size) {
-			parseFailed("Some genres are not found")
+			tagsIndex.parseFailed("Some genres are not found")
 		}
 		// Step 2: advanced search
 		payload["q"] = ""
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/grouple/ReadmangaParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/grouple/ReadmangaParser.kt
@@ -11,7 +11,7 @@ internal class ReadmangaParser(
 ) : GroupleParser(MangaSource.READMANGA_RU, "readmangafun", 1) {

 	override val configKeyDomain = ConfigKey.Domain(
-		"readmanga.io",
+		"readmanga.live",
 		arrayOf("readmanga.io", "readmanga.live", "readmanga.me"),
 	)

--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/madara/IsekaiScanEu.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/madara/IsekaiScanEu.kt
@@ -0,0 +1,45 @@
+package org.koitharu.kotatsu.parsers.site.madara
+
+import org.jsoup.nodes.Document
+import org.koitharu.kotatsu.parsers.MangaLoaderContext
+import org.koitharu.kotatsu.parsers.MangaSourceParser
+import org.koitharu.kotatsu.parsers.model.Manga
+import org.koitharu.kotatsu.parsers.model.MangaChapter
+import org.koitharu.kotatsu.parsers.model.MangaSource
+import org.koitharu.kotatsu.parsers.util.*
+import java.text.SimpleDateFormat
+import java.util.*
+
+@MangaSourceParser("ISEKAISCAN_EU", "IsekaiScan (eu)", "en")
+internal class IsekaiScanEuParser(context: MangaLoaderContext) :
+	MadaraParser(context, MangaSource.ISEKAISCAN_EU, "isekaiscan.eu") {
+
+	override suspend fun getChapters(manga: Manga, doc: Document): List<MangaChapter> {
+		val mangaId = doc.body().requireElementById("manga-chapters-holder").attr("data-id")
+		val ul = context.httpPost(
+			"https://${getDomain()}/wp-admin/admin-ajax.php",
+			mapOf(
+				"action" to "manga_get_chapters",
+				"manga" to mangaId,
+			),
+		).parseHtml().body().selectFirstOrThrow("ul")
+		val dateFormat = SimpleDateFormat(datePattern, Locale.US)
+		return ul.select("li").asReversed().mapChapters { i, li ->
+			val a = li.selectFirst("a")
+			val href = a?.attrAsRelativeUrlOrNull("href") ?: li.parseFailed("Link is missing")
+			MangaChapter(
+				id = generateUid(href),
+				name = a.ownText(),
+				number = i + 1,
+				url = href,
+				uploadDate = parseChapterDate(
+					dateFormat,
+					li.selectFirst("span.chapter-release-date i")?.text(),
+				),
+				source = source,
+				scanlator = null,
+				branch = null,
+			)
+		}
+	}
+}
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/madara/Madara5Parser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/madara/Madara5Parser.kt
@@ -4,8 +4,8 @@ import androidx.collection.arraySetOf
 import org.jsoup.nodes.Element
 import org.koitharu.kotatsu.parsers.InternalParsersApi
 import org.koitharu.kotatsu.parsers.MangaLoaderContext
-import org.koitharu.kotatsu.parsers.MangaParser
 import org.koitharu.kotatsu.parsers.MangaSourceParser
+import org.koitharu.kotatsu.parsers.PagedMangaParser
 import org.koitharu.kotatsu.parsers.config.ConfigKey
 import org.koitharu.kotatsu.parsers.model.*
 import org.koitharu.kotatsu.parsers.util.*
@@ -16,9 +16,9 @@ abstract class Madara5Parser @InternalParsersApi constructor(
 	override val context: MangaLoaderContext,
 	source: MangaSource,
 	domain: String,
-) : MangaParser(source) {
+) : PagedMangaParser(source, pageSize = 22) {

-	protected open val pageSize = 22
+	protected open val datePattern = "MMMM dd, HH:mm"
 	protected open val tagPrefix = "/mangas/"
 	protected open val nsfwTags = arraySetOf("yaoi", "yuri", "mature")

@@ -26,9 +26,12 @@ abstract class Madara5Parser @InternalParsersApi constructor(

 	override val configKeyDomain = ConfigKey.Domain(domain, null)

-	@InternalParsersApi
-	override suspend fun getList(offset: Int, query: String?, tags: Set<MangaTag>?, sortOrder: SortOrder): List<Manga> {
-		val page = (offset / pageSize.toFloat()).toIntUp()
+	override suspend fun getListPage(
+		page: Int,
+		query: String?,
+		tags: Set<MangaTag>?,
+		sortOrder: SortOrder,
+	): List<Manga> {
 		val domain = getDomain()
 		val url = buildString {
 			append("https://")
@@ -87,7 +90,7 @@ abstract class Madara5Parser @InternalParsersApi constructor(
 			?.getElementsByAttributeValueContaining("href", tagPrefix)
 			?.mapToSet { a -> a.asMangaTag() } ?: manga.tags
 		val mangaId = root.getElementById("manga-chapters-holder")?.attr("data-id")?.toLongOrNull()
-			?: parseFailed("Cannot find mangaId")
+			?: root.parseFailed("Cannot find mangaId")
 		return manga.copy(
 			description = (root.selectFirst(".detail-content")
 				?: root.selectFirstOrThrow(".description-summary")).html(),
@@ -104,7 +107,7 @@ abstract class Madara5Parser @InternalParsersApi constructor(
 	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> {
 		val fullUrl = chapter.url.toAbsoluteUrl(getDomain())
 		val doc = context.httpGet(fullUrl).parseHtml()
-		val arrayData = doc.getElementById("arraydata") ?: parseFailed("#arraydata not found")
+		val arrayData = doc.getElementById("arraydata") ?: doc.parseFailed("#arraydata not found")
 		return arrayData.html().split(',').map { url ->
 			MangaPage(
 				id = generateUid(url),
@@ -123,7 +126,7 @@ abstract class Madara5Parser @InternalParsersApi constructor(
 	}

 	private suspend fun loadChapters(mangaId: Long): List<MangaChapter> {
-		val dateFormat = SimpleDateFormat("MMMM dd, HH:mm", sourceLocale ?: Locale.US)
+		val dateFormat = SimpleDateFormat(datePattern, sourceLocale ?: Locale.US)
 		val doc = context.httpGet("https://${getDomain()}/ajax-list-chapter?mangaID=$mangaId").parseHtml()
 		return doc.select("li.wp-manga-chapter").asReversed().mapChapters { i, li ->
 			val a = li.selectFirstOrThrow("a")
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/madara/Madara6Parser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/madara/Madara6Parser.kt
@@ -0,0 +1,70 @@
+package org.koitharu.kotatsu.parsers.site.madara
+
+import kotlinx.coroutines.async
+import kotlinx.coroutines.coroutineScope
+import org.jsoup.nodes.Element
+import org.koitharu.kotatsu.parsers.MangaLoaderContext
+import org.koitharu.kotatsu.parsers.model.*
+import org.koitharu.kotatsu.parsers.util.*
+import java.text.SimpleDateFormat
+import java.util.*
+
+internal abstract class Madara6Parser(
+	context: MangaLoaderContext,
+	source: MangaSource,
+	domain: String,
+) : MadaraParser(context, source, domain) {
+
+	override val datePattern: String = "dd MMMM yyyy"
+
+	override suspend fun getDetails(manga: Manga): Manga {
+		return coroutineScope {
+			val chapters = async { loadChapters(manga.url) }
+			val body = context.httpGet(manga.url.toAbsoluteUrl(getDomain())).parseHtml().body()
+			parseDetails(manga, body, chapters.await())
+		}
+	}
+
+	protected fun Element.tableValue(): Element {
+		for (p in parents()) {
+			val children = p.children()
+			if (children.size == 2) {
+				return children[1]
+			}
+		}
+		parseFailed("Cannot find tableValue for node ${text()}")
+	}
+
+	protected abstract fun String.asMangaState(): MangaState?
+
+	protected fun Element.asMangaTag() = MangaTag(
+		title = ownText(),
+		key = attr("href").removeSuffix('/').substringAfterLast('/')
+			.replace('-', '+'),
+		source = source,
+	)
+
+	protected open suspend fun loadChapters(mangaUrl: String): List<MangaChapter> {
+		val url = mangaUrl.toAbsoluteUrl(getDomain()).removeSuffix('/') + "/ajax/chapters/"
+		val dateFormat = SimpleDateFormat(datePattern, sourceLocale ?: Locale.ROOT)
+		val doc = context.httpPost(url, emptyMap()).parseHtml()
+		return doc.select("li.wp-manga-chapter").asReversed().mapChapters { i, li ->
+			val a = li.selectFirstOrThrow("a")
+			val href = a.attrAsRelativeUrl("href")
+			MangaChapter(
+				id = generateUid(href),
+				url = href,
+				name = a.text(),
+				number = i + 1,
+				branch = null,
+				uploadDate = dateFormat.tryParse(
+					li.selectFirst(".chapter-release-date")?.text()?.trim(),
+				),
+				scanlator = null,
+				source = source,
+			)
+		}
+	}
+
+	protected abstract fun parseDetails(manga: Manga, body: Element, chapters: List<MangaChapter>): Manga
+}
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/madara/MadaraParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/madara/MadaraParser.kt
@@ -1,9 +1,12 @@
 package org.koitharu.kotatsu.parsers.site.madara

+import kotlinx.coroutines.async
+import kotlinx.coroutines.coroutineScope
+import org.jsoup.nodes.Document
 import org.jsoup.nodes.Element
 import org.koitharu.kotatsu.parsers.MangaLoaderContext
-import org.koitharu.kotatsu.parsers.MangaParser
 import org.koitharu.kotatsu.parsers.MangaSourceParser
+import org.koitharu.kotatsu.parsers.PagedMangaParser
 import org.koitharu.kotatsu.parsers.config.ConfigKey
 import org.koitharu.kotatsu.parsers.exception.ParseException
 import org.koitharu.kotatsu.parsers.model.*
@@ -12,13 +15,11 @@ import java.text.DateFormat
 import java.text.SimpleDateFormat
 import java.util.*

-private const val PAGE_SIZE = 12
-
 internal abstract class MadaraParser(
 	override val context: MangaLoaderContext,
 	source: MangaSource,
 	domain: String,
-) : MangaParser(source) {
+) : PagedMangaParser(source, pageSize = 12) {

 	override val configKeyDomain = ConfigKey.Domain(domain, null)

@@ -29,30 +30,36 @@ internal abstract class MadaraParser(

 	protected open val tagPrefix = "manga-genre/"
 	protected open val isNsfwSource = false
+	protected open val datePattern = "MMMM dd, yyyy"

-	override suspend fun getList(
-		offset: Int,
+	init {
+		paginator.firstPage = 0
+		searchPaginator.firstPage = 0
+	}
+
+	override suspend fun getListPage(
+		page: Int,
 		query: String?,
 		tags: Set<MangaTag>?,
 		sortOrder: SortOrder,
 	): List<Manga> {
 		val tag = tags.oneOrThrowIfMany()
 		val payload = createRequestTemplate()
-		payload["page"] = (offset / PAGE_SIZE.toFloat()).toIntUp().toString()
+		payload["page"] = page.toString()
 		payload["vars[meta_key]"] = when (sortOrder) {
 			SortOrder.POPULARITY -> "_wp_manga_views"
 			SortOrder.UPDATED -> "_latest_update"
 			else -> "_wp_manga_views"
 		}
 		payload["vars[wp-manga-genre]"] = tag?.key.orEmpty()
-		payload["vars[s]"] = query.orEmpty()
+		payload["vars[s]"] = query?.urlEncoded().orEmpty()
 		val doc = context.httpPost(
 			"https://${getDomain()}/wp-admin/admin-ajax.php",
 			payload,
 		).parseHtml()
 		return doc.select("div.row.c-tabs-item__content").map { div ->
 			val href = div.selectFirst("a")?.attrAsRelativeUrlOrNull("href")
-				?: parseFailed("Link not found")
+				?: div.parseFailed("Link not found")
 			val summary = div.selectFirst(".tab-summary")
 			Manga(
 				id = generateUid(href),
@@ -91,7 +98,7 @@ internal abstract class MadaraParser(
 		val root1 = body.selectFirst("header")?.selectFirst("ul.second-menu")
 		val root2 = body.selectFirst("div.genres_wrap")?.selectFirst("ul.list-unstyled")
 		if (root1 == null && root2 == null) {
-			parseFailed("Root not found")
+			doc.parseFailed("Root not found")
 		}
 		val list = root1?.select("li").orEmpty() + root2?.select("li").orEmpty()
 		val keySet = HashSet<String>(list.size)
@@ -112,18 +119,18 @@ internal abstract class MadaraParser(
 		}
 	}

-	override suspend fun getDetails(manga: Manga): Manga {
+	override suspend fun getDetails(manga: Manga): Manga = coroutineScope {
 		val fullUrl = manga.url.toAbsoluteUrl(getDomain())
 		val doc = context.httpGet(fullUrl).parseHtml()
+		val chaptersDeferred = async { getChapters(manga, doc) }
 		val root = doc.body().selectFirst("div.profile-manga")
 			?.selectFirst("div.summary_content")
 			?.selectFirst("div.post-content")
-			?: throw ParseException("Root not found")
+			?: throw ParseException("Root not found", fullUrl)
 		val root2 = doc.body().selectFirst("div.content-area")
 			?.selectFirst("div.c-page")
-			?: throw ParseException("Root2 not found")
-		val dateFormat = SimpleDateFormat("MMMM dd, yyyy", Locale.US)
-		return manga.copy(
+			?: throw ParseException("Root2 not found", fullUrl)
+		manga.copy(
 			tags = root.selectFirst("div.genres-content")?.select("a")
 				?.mapNotNullToSet { a ->
 					MangaTag(
@@ -137,35 +144,42 @@ internal abstract class MadaraParser(
 				?.select("p")
 				?.filterNot { it.ownText().startsWith("A brief description") }
 				?.joinToString { it.html() },
-			chapters = root2.select("li").asReversed().mapChapters { i, li ->
-				val a = li.selectFirst("a")
-				val href = a?.attrAsRelativeUrlOrNull("href") ?: parseFailed("Link is missing")
-				MangaChapter(
-					id = generateUid(href),
-					name = a.ownText(),
-					number = i + 1,
-					url = href,
-					uploadDate = parseChapterDate(
-						dateFormat,
-						li.selectFirst("span.chapter-release-date i")?.text(),
-					),
-					source = source,
-					scanlator = null,
-					branch = null,
-				)
-			},
+			chapters = chaptersDeferred.await(),
 		)
 	}

+	protected open suspend fun getChapters(manga: Manga, doc: Document): List<MangaChapter> {
+		val root2 = doc.body().selectFirstOrThrow("div.content-area")
+			.selectFirstOrThrow("div.c-page")
+		val dateFormat = SimpleDateFormat(datePattern, Locale.US)
+		return root2.select("li").asReversed().mapChapters { i, li ->
+			val a = li.selectFirst("a")
+			val href = a?.attrAsRelativeUrlOrNull("href") ?: li.parseFailed("Link is missing")
+			MangaChapter(
+				id = generateUid(href),
+				name = a.ownText(),
+				number = i + 1,
+				url = href,
+				uploadDate = parseChapterDate(
+					dateFormat,
+					li.selectFirst("span.chapter-release-date i")?.text(),
+				),
+				source = source,
+				scanlator = null,
+				branch = null,
+			)
+		}
+	}
+
 	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> {
 		val fullUrl = chapter.url.toAbsoluteUrl(getDomain())
 		val doc = context.httpGet(fullUrl).parseHtml()
 		val root = doc.body().selectFirst("div.main-col-inner")
 			?.selectFirst("div.reading-content")
-			?: throw ParseException("Root not found")
+			?: throw ParseException("Root not found", fullUrl)
 		return root.select("div.page-break").map { div ->
-			val img = div.selectFirst("img") ?: parseFailed("Page image not found")
-			val url = img.src()?.toRelativeUrl(getDomain()) ?: parseFailed("Image src not found")
+			val img = div.selectFirst("img") ?: div.parseFailed("Page image not found")
+			val url = img.src()?.toRelativeUrl(getDomain()) ?: div.parseFailed("Image src not found")
 			MangaPage(
 				id = generateUid(url),
 				url = url,
@@ -176,7 +190,7 @@ internal abstract class MadaraParser(
 		}
 	}

-	private fun parseChapterDate(dateFormat: DateFormat, date: String?): Long {
+	protected fun parseChapterDate(dateFormat: DateFormat, date: String?): Long {
 		date ?: return 0
 		return when {
 			date.endsWith(" ago", ignoreCase = true) -> {
@@ -351,9 +365,6 @@ internal abstract class MadaraParser(
 	@MangaSourceParser("MANGAROCK", "MangaRock", "en")
 	class MangaRock(context: MangaLoaderContext) : MadaraParser(context, MangaSource.MANGAROCK, "mangarockteam.com")

-	@MangaSourceParser("ISEKAISCAN_EU", "IsekaiScan (eu)", "en")
-	class IsekaiScanEu(context: MangaLoaderContext) : MadaraParser(context, MangaSource.ISEKAISCAN_EU, "isekaiscan.eu")
-
 	@MangaSourceParser("FREEMANGA", "FreeManga", "en")
 	class FreeManga(context: MangaLoaderContext) : MadaraParser(context, MangaSource.FREEMANGA, "freemanga.me")

--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/madara/MangasOriginesParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/madara/MangasOriginesParser.kt
@@ -0,0 +1,56 @@
+package org.koitharu.kotatsu.parsers.site.madara
+
+import org.jsoup.nodes.Element
+import org.koitharu.kotatsu.parsers.MangaLoaderContext
+import org.koitharu.kotatsu.parsers.MangaSourceParser
+import org.koitharu.kotatsu.parsers.model.Manga
+import org.koitharu.kotatsu.parsers.model.MangaChapter
+import org.koitharu.kotatsu.parsers.model.MangaSource
+import org.koitharu.kotatsu.parsers.model.MangaState
+import org.koitharu.kotatsu.parsers.util.attrAsAbsoluteUrlOrNull
+import org.koitharu.kotatsu.parsers.util.mapToSet
+import org.koitharu.kotatsu.parsers.util.selectFirstOrThrow
+import java.util.*
+
+@MangaSourceParser("MANGAS_ORIGINES", "Mangas Origines", "fr")
+internal class MangasOriginesParser(context: MangaLoaderContext) :
+	Madara6Parser(context, MangaSource.MANGAS_ORIGINES, "mangas-origines.fr") {
+
+	override val tagPrefix = "catalogues-genre/"
+
+	override fun getFaviconUrl(): String {
+		return "https://${getDomain()}/wp-content/uploads/2020/11/Mangas-150x150.png"
+	}
+
+	override fun parseDetails(manga: Manga, body: Element, chapters: List<MangaChapter>): Manga {
+		val root = body.selectFirstOrThrow(".site-content")
+		val postContent = root.selectFirstOrThrow(".post-content")
+		val tags = postContent.getElementsContainingOwnText("Genre")
+			.firstOrNull()?.tableValue()
+			?.getElementsByAttributeValueContaining("href", tagPrefix)
+			?.mapToSet { a -> a.asMangaTag() } ?: manga.tags
+		return manga.copy(
+			largeCoverUrl = root.selectFirst("picture")
+				?.selectFirst("img[data-src]")
+				?.attrAsAbsoluteUrlOrNull("data-src"),
+			description = (root.selectFirst(".detail-content")
+				?: root.selectFirstOrThrow(".manga-excerpt")).html(),
+			author = postContent.getElementsContainingOwnText("Auteur")
+				.firstOrNull()?.tableValue()?.text()?.trim(),
+			state = postContent.getElementsContainingOwnText("STATUS")
+				.firstOrNull()?.tableValue()?.text()?.asMangaState(),
+			tags = tags,
+			isNsfw = body.hasClass("adult-content"),
+			chapters = chapters,
+		)
+	}
+
+	override fun String.asMangaState() = when (trim().lowercase(Locale.FRANCE)) {
+		"en cours" -> MangaState.ONGOING
+		"abandonné",
+		"terminé",
+		-> MangaState.FINISHED
+
+		else -> null
+	}
+}
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/madara/PrismaScansParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/madara/PrismaScansParser.kt
@@ -0,0 +1,57 @@
+package org.koitharu.kotatsu.parsers.site.madara
+
+import org.jsoup.nodes.Element
+import org.koitharu.kotatsu.parsers.MangaLoaderContext
+import org.koitharu.kotatsu.parsers.MangaSourceParser
+import org.koitharu.kotatsu.parsers.model.Manga
+import org.koitharu.kotatsu.parsers.model.MangaChapter
+import org.koitharu.kotatsu.parsers.model.MangaSource
+import org.koitharu.kotatsu.parsers.model.MangaState
+import org.koitharu.kotatsu.parsers.util.attrAsAbsoluteUrlOrNull
+import org.koitharu.kotatsu.parsers.util.mapToSet
+import org.koitharu.kotatsu.parsers.util.selectFirstOrThrow
+import java.util.*
+
+@MangaSourceParser("PRISMA_SCANS", "Prisma Scans", "pt")
+internal class PrismaScansParser(context: MangaLoaderContext) :
+	Madara6Parser(context, MangaSource.PRISMA_SCANS, "prismascans.net") {
+
+	override val tagPrefix = "manga-genre/"
+
+	override fun getFaviconUrl(): String {
+		return "https://${getDomain()}/wp-content/uploads/2022/07/cropped-branca-1-192x192.png"
+	}
+
+	override fun parseDetails(manga: Manga, body: Element, chapters: List<MangaChapter>): Manga {
+		val root = body.selectFirstOrThrow(".site-content")
+		val postContent = root.selectFirstOrThrow(".post-content")
+		val tags = postContent.getElementsContainingOwnText("Gênero")
+			.firstOrNull()?.tableValue()
+			?.getElementsByAttributeValueContaining("href", tagPrefix)
+			?.mapToSet { a -> a.asMangaTag() } ?: manga.tags
+		return manga.copy(
+			largeCoverUrl = root.selectFirst("picture")
+				?.selectFirst("img[data-src]")
+				?.attrAsAbsoluteUrlOrNull("data-src"),
+			description = root.selectFirstOrThrow(".description-summary").firstElementChild()?.html(),
+			author = postContent.getElementsContainingOwnText("Artista")
+				.firstOrNull()?.tableValue()?.text()?.trim(),
+			altTitle = postContent.getElementsContainingOwnText("Título Alternativo")
+				.firstOrNull()?.tableValue()?.text()?.trim(),
+			state = postContent.getElementsContainingOwnText("Status")
+				.firstOrNull()?.tableValue()?.text()?.asMangaState(),
+			tags = tags,
+			isNsfw = body.hasClass("adult-content"),
+			chapters = chapters,
+		)
+	}
+
+	override fun String.asMangaState() = when (trim().lowercase(sourceLocale ?: Locale.ROOT)) {
+		"em lançamento" -> MangaState.ONGOING
+		"completo",
+		"cancelado",
+		-> MangaState.FINISHED
+
+		else -> null
+	}
+}
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/madara/TatakaeScansParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/madara/TatakaeScansParser.kt
@@ -0,0 +1,51 @@
+package org.koitharu.kotatsu.parsers.site.madara
+
+import org.jsoup.nodes.Element
+import org.koitharu.kotatsu.parsers.MangaLoaderContext
+import org.koitharu.kotatsu.parsers.MangaSourceParser
+import org.koitharu.kotatsu.parsers.model.*
+import org.koitharu.kotatsu.parsers.util.attrAsAbsoluteUrlOrNull
+import org.koitharu.kotatsu.parsers.util.mapToSet
+import org.koitharu.kotatsu.parsers.util.selectFirstOrThrow
+import java.util.*
+
+@MangaSourceParser("TATAKAE_SCANS", "Tatakae Scans", "pt")
+internal class TatakaeScansParser(context: MangaLoaderContext) :
+	Madara6Parser(context, MangaSource.TATAKAE_SCANS, "tatakaescan.com") {
+
+	override val datePattern: String = "dd 'de' MMMMM 'de' yyyy"
+
+	override fun parseDetails(manga: Manga, body: Element, chapters: List<MangaChapter>): Manga {
+		val root = body.selectFirstOrThrow(".site-content")
+		val postContent = root.selectFirstOrThrow(".post-content")
+		val tags = postContent.getElementsContainingOwnText("Gênero")
+			.firstOrNull()?.tableValue()
+			?.getElementsByAttributeValueContaining("href", tagPrefix)
+			?.mapToSet { a -> a.asMangaTag() } ?: manga.tags
+		return manga.copy(
+			largeCoverUrl = root.selectFirst("picture")
+				?.selectFirst("img[data-src]")
+				?.attrAsAbsoluteUrlOrNull("data-src"),
+			description = (root.selectFirst(".detail-content")
+				?: root.selectFirstOrThrow(".manga-excerpt")).html(),
+			author = postContent.getElementsContainingOwnText("Autor")
+				.firstOrNull()?.tableValue()?.text()?.trim(),
+			state = postContent.getElementsContainingOwnText("Status")
+				.firstOrNull()?.tableValue()?.text()?.asMangaState(),
+			tags = tags,
+			isNsfw = body.hasClass("adult-content"),
+			chapters = chapters,
+		)
+	}
+
+	override fun String.asMangaState() = when (trim().lowercase(Locale.ROOT)) {
+		"em lançamento" -> MangaState.ONGOING
+
+		else -> null
+	}
+
+	override fun getFaviconUrl(): String {
+		return "https://${getDomain()}/wp-content/uploads/2022/07/cropped-favicon-180x180.png"
+	}
+
+}
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/multichan/ChanParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/multichan/ChanParser.kt
@@ -3,7 +3,6 @@ package org.koitharu.kotatsu.parsers.site.multichan
 import org.koitharu.kotatsu.parsers.MangaParser
 import org.koitharu.kotatsu.parsers.MangaParserAuthProvider
 import org.koitharu.kotatsu.parsers.exception.AuthRequiredException
-import org.koitharu.kotatsu.parsers.exception.ParseException
 import org.koitharu.kotatsu.parsers.model.*
 import org.koitharu.kotatsu.parsers.util.*
 import java.text.SimpleDateFormat
@@ -48,7 +47,7 @@ internal abstract class ChanParser(source: MangaSource) : MangaParser(source), M
 		}
 		val doc = context.httpGet(url).parseHtml()
 		val root = doc.body().selectFirst("div.main_fon")?.getElementById("content")
-			?: parseFailed("Cannot find root")
+			?: doc.parseFailed("Cannot find root")
 		return root.select("div.content_row").mapNotNull { row ->
 			val a = row.selectFirst("div.manga_row1")?.selectFirst("h2")?.selectFirst("a")
 				?: return@mapNotNull null
@@ -84,8 +83,7 @@ internal abstract class ChanParser(source: MangaSource) : MangaParser(source), M

 	override suspend fun getDetails(manga: Manga): Manga {
 		val doc = context.httpGet(manga.url.toAbsoluteUrl(getDomain())).parseHtml()
-		val root =
-			doc.body().getElementById("dle-content") ?: parseFailed("Cannot find root")
+		val root = doc.body().getElementById("dle-content") ?: doc.parseFailed("Cannot find root")
 		val dateFormat = SimpleDateFormat("yyyy-MM-dd", Locale.US)
 		return manga.copy(
 			description = root.getElementById("description")?.html()?.substringBeforeLast("<div"),
@@ -135,16 +133,16 @@ internal abstract class ChanParser(source: MangaSource) : MangaParser(source), M
 				)
 			}
 		}
-		parseFailed("Pages list not found at ${chapter.url}")
+		doc.parseFailed("Pages list not found at ${chapter.url}")
 	}

 	override suspend fun getTags(): Set<MangaTag> {
 		val domain = getDomain()
 		val doc = context.httpGet("https://$domain/mostfavorites&sort=manga").parseHtml()
 		val root = doc.body().selectFirst("div.main_fon")?.getElementById("side")
-			?.select("ul")?.last() ?: throw ParseException("Cannot find root")
+			?.select("ul")?.last() ?: doc.parseFailed("Cannot find root")
 		return root.select("li.sidetag").mapToSet { li ->
-			val a = li.children().last() ?: throw ParseException("a is null")
+			val a = li.children().lastOrNull() ?: li.parseFailed("a is null")
 			MangaTag(
 				title = a.text().toTagName(),
 				key = a.attr("href").substringAfterLast('/'),
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/multichan/HenChanParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/multichan/HenChanParser.kt
@@ -3,12 +3,8 @@ package org.koitharu.kotatsu.parsers.site.multichan
 import org.koitharu.kotatsu.parsers.MangaLoaderContext
 import org.koitharu.kotatsu.parsers.MangaSourceParser
 import org.koitharu.kotatsu.parsers.config.ConfigKey
-import org.koitharu.kotatsu.parsers.exception.ParseException
 import org.koitharu.kotatsu.parsers.model.*
-import org.koitharu.kotatsu.parsers.util.mapToSet
-import org.koitharu.kotatsu.parsers.util.parseHtml
-import org.koitharu.kotatsu.parsers.util.toAbsoluteUrl
-import org.koitharu.kotatsu.parsers.util.toTitleCase
+import org.koitharu.kotatsu.parsers.util.*

@MangaSourceParser("HENCHAN", "Хентай-тян", "ru")
 internal class HenChanParser(override val context: MangaLoaderContext) : ChanParser(MangaSource.HENCHAN) {
@@ -34,13 +30,13 @@ internal class HenChanParser(override val context: MangaLoaderContext) : ChanPar

 	override suspend fun getDetails(manga: Manga): Manga {
 		val doc = context.httpGet(manga.url.toAbsoluteUrl(getDomain())).parseHtml()
-		val root = doc.body().getElementById("dle-content") ?: throw ParseException("Cannot find root")
+		val root = doc.body().requireElementById("dle-content")
 		val readLink = manga.url.replace("manga", "online")
 		return manga.copy(
 			description = root.getElementById("description")?.html()?.substringBeforeLast("<div"),
 			largeCoverUrl = root.getElementById("cover")?.absUrl("src"),
 			tags = root.selectFirst("div.sidetags")?.select("li.sidetag")?.mapToSet {
-				val a = it.children().last() ?: parseFailed("Invalid tag")
+				val a = it.children().last() ?: doc.parseFailed("Invalid tag")
 				MangaTag(
 					title = a.text().toTitleCase(),
 					key = a.attr("href").substringAfterLast('/'),
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/multichan/YaoiChanParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/multichan/YaoiChanParser.kt
@@ -3,14 +3,10 @@ package org.koitharu.kotatsu.parsers.site.multichan
 import org.koitharu.kotatsu.parsers.MangaLoaderContext
 import org.koitharu.kotatsu.parsers.MangaSourceParser
 import org.koitharu.kotatsu.parsers.config.ConfigKey
-import org.koitharu.kotatsu.parsers.exception.ParseException
 import org.koitharu.kotatsu.parsers.model.Manga
 import org.koitharu.kotatsu.parsers.model.MangaChapter
 import org.koitharu.kotatsu.parsers.model.MangaSource
-import org.koitharu.kotatsu.parsers.util.attrAsRelativeUrl
-import org.koitharu.kotatsu.parsers.util.mapChapters
-import org.koitharu.kotatsu.parsers.util.parseHtml
-import org.koitharu.kotatsu.parsers.util.toAbsoluteUrl
+import org.koitharu.kotatsu.parsers.util.*

@MangaSourceParser("YAOICHAN", "Яой-тян", "ru")
 internal class YaoiChanParser(override val context: MangaLoaderContext) : ChanParser(MangaSource.YAOICHAN) {
@@ -19,8 +15,7 @@ internal class YaoiChanParser(override val context: MangaLoaderContext) : ChanPa

 	override suspend fun getDetails(manga: Manga): Manga {
 		val doc = context.httpGet(manga.url.toAbsoluteUrl(getDomain())).parseHtml()
-		val root =
-			doc.body().getElementById("dle-content") ?: throw ParseException("Cannot find root")
+		val root = doc.body().requireElementById("dle-content")
 		return manga.copy(
 			description = root.getElementById("description")?.html()?.substringBeforeLast("<div"),
 			largeCoverUrl = root.getElementById("cover")?.absUrl("src"),
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/site/rulib/MangaLibParser.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/site/rulib/MangaLibParser.kt
@@ -5,9 +5,9 @@ import org.json.JSONArray
 import org.json.JSONObject
 import org.jsoup.nodes.Document
 import org.koitharu.kotatsu.parsers.MangaLoaderContext
-import org.koitharu.kotatsu.parsers.MangaParser
 import org.koitharu.kotatsu.parsers.MangaParserAuthProvider
 import org.koitharu.kotatsu.parsers.MangaSourceParser
+import org.koitharu.kotatsu.parsers.PagedMangaParser
 import org.koitharu.kotatsu.parsers.config.ConfigKey
 import org.koitharu.kotatsu.parsers.exception.AuthRequiredException
 import org.koitharu.kotatsu.parsers.exception.ParseException
@@ -22,7 +22,7 @@ import java.util.*
 internal open class MangaLibParser(
 	override val context: MangaLoaderContext,
 	source: MangaSource,
-) : MangaParser(source), MangaParserAuthProvider {
+) : PagedMangaParser(source, pageSize = 60), MangaParserAuthProvider {

 	override val configKeyDomain = ConfigKey.Domain("mangalib.me", null)

@@ -37,16 +37,15 @@ internal open class MangaLibParser(
 		SortOrder.NEWEST,
 	)

-	override suspend fun getList(
-		offset: Int,
+	override suspend fun getListPage(
+		page: Int,
 		query: String?,
 		tags: Set<MangaTag>?,
 		sortOrder: SortOrder,
 	): List<Manga> {
 		if (!query.isNullOrEmpty()) {
-			return if (offset == 0) search(query) else emptyList()
+			return if (page == searchPaginator.firstPage) search(query) else emptyList()
 		}
-		val page = (offset / 60f).toIntUp()
 		val url = buildString {
 			append("https://")
 			append(getDomain())
@@ -60,7 +59,7 @@ internal open class MangaLibParser(
 			}
 		}
 		val doc = context.httpGet(url).parseHtml()
-		val root = doc.body().getElementById("manga-list") ?: throw ParseException("Root not found")
+		val root = doc.body().getElementById("manga-list") ?: doc.parseFailed("Root not found")
 		val items = root.selectFirst("div.media-cards-grid")?.select("div.media-card-wrap")
 			?: return emptyList()
 		return items.mapNotNull { card ->
@@ -86,7 +85,7 @@ internal open class MangaLibParser(
 	override suspend fun getDetails(manga: Manga): Manga {
 		val fullUrl = manga.url.toAbsoluteUrl(getDomain())
 		val doc = context.httpGet("$fullUrl?section=info").parseHtml()
-		val root = doc.body().getElementById("main-page") ?: throw ParseException("Root not found")
+		val root = doc.body().getElementById("main-page") ?: throw ParseException("Root not found", fullUrl)
 		val title = root.selectFirst("div.media-header__wrap")?.children()
 		val info = root.selectFirst("div.media-content")
 		val chaptersDoc = context.httpGet("$fullUrl?section=chapters").parseHtml()
@@ -166,11 +165,11 @@ internal open class MangaLibParser(
 	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> {
 		val fullUrl = chapter.url.toAbsoluteUrl(getDomain())
 		val doc = context.httpGet(fullUrl).parseHtml()
-		if (doc.location().endsWith("/register")) {
+		if (doc.location().substringBefore('?').endsWith("/register")) {
 			throw AuthRequiredException(source)
 		}
 		val scripts = doc.head().select("script")
-		val pg = (doc.body().getElementById("pg")?.html() ?: parseFailed("Element #pg not found"))
+		val pg = (doc.body().getElementById("pg")?.html() ?: doc.parseFailed("Element #pg not found"))
 			.substringAfter('=')
 			.substringBeforeLast(';')
 		val pages = JSONArray(pg)
@@ -200,7 +199,7 @@ internal open class MangaLibParser(
 				}
 			}
 		}
-		throw ParseException("Script with info not found")
+		throw ParseException("Script with info not found", fullUrl)
 	}

 	override suspend fun getTags(): Set<MangaTag> {
@@ -223,7 +222,7 @@ internal open class MangaLibParser(
 				return result
 			}
 		}
-		throw ParseException("Script with genres not found")
+		throw ParseException("Script with genres not found", url)
 	}

 	override val isAuthorized: Boolean
@@ -238,13 +237,13 @@ internal open class MangaLibParser(
 		if (body.baseUri().endsWith("/login")) {
 			throw AuthRequiredException(source)
 		}
-		return body.selectFirst(".profile-user__username")?.text() ?: parseFailed("Cannot find username")
+		return body.selectFirst(".profile-user__username")?.text() ?: body.parseFailed("Cannot find username")
 	}

 	protected open fun isNsfw(doc: Document): Boolean {
 		val sidebar = doc.body().run {
 			selectFirst(".media-sidebar") ?: selectFirst(".media-info")
-		} ?: parseFailed("Sidebar not found")
+		} ?: doc.parseFailed("Sidebar not found")
 		return sidebar.getElementsContainingOwnText("18+").isNotEmpty()
 	}

--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/util/Assert.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/util/Assert.kt
@@ -0,0 +1,8 @@
+package org.koitharu.kotatsu.parsers.util
+
+fun <T : Any> T?.assertNotNull(name: String): T? {
+	assert(this != null) {
+		"Value $name is null"
+	}
+	return this
+}
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/util/CookieJar.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/util/CookieJar.kt
@@ -9,10 +9,7 @@ import okhttp3.HttpUrl
 private const val SCHEME_HTTPS = "https"

 fun CookieJar.insertCookies(domain: String, vararg cookies: String) {
-	val url = HttpUrl.Builder()
-		.scheme(SCHEME_HTTPS)
-		.host(domain)
-		.build()
+	val url = safeUrlOf(domain) ?: return
 	saveFromResponse(
 		url,
 		cookies.mapNotNull {
@@ -22,18 +19,12 @@ fun CookieJar.insertCookies(domain: String, vararg cookies: String) {
 }

 fun CookieJar.insertCookie(domain: String, cookie: Cookie) {
-	val url = HttpUrl.Builder()
-		.scheme(SCHEME_HTTPS)
-		.host(domain)
-		.build()
+	val url = safeUrlOf(domain) ?: return
 	saveFromResponse(url, listOf(cookie))
 }

 fun CookieJar.getCookies(domain: String): List<Cookie> {
-	val url = HttpUrl.Builder()
-		.scheme(SCHEME_HTTPS)
-		.host(domain)
-		.build()
+	val url = safeUrlOf(domain) ?: return emptyList()
 	return loadForRequest(url)
 }

@@ -47,4 +38,13 @@ fun CookieJar.copyCookies(oldDomain: String, newDomain: String, names: Array<Str
 	}
 	url.host(newDomain)
 	saveFromResponse(url.build(), cookies)
+}
+
+private fun safeUrlOf(domain: String): HttpUrl? = try {
+	HttpUrl.Builder()
+		.scheme(SCHEME_HTTPS)
+		.host(domain)
+		.build()
+} catch (_: IllegalArgumentException) {
+	null
 }
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/util/Jsoup.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/util/Jsoup.kt
@@ -4,6 +4,7 @@ package org.koitharu.kotatsu.parsers.util

 import okhttp3.HttpUrl.Companion.toHttpUrlOrNull
 import org.jsoup.nodes.Element
+import org.jsoup.select.Elements
 import org.jsoup.select.Selector
 import org.koitharu.kotatsu.parsers.exception.ParseException

@@ -90,12 +91,21 @@ fun Element.styleValueOrNull(property: String): String? {
 	return css.substringAfter(':').removeSuffix(';').trim()
 }

+/**
+ * Like a `expectFirst` but with detailed error message
+ */
 fun Element.selectFirstOrThrow(cssQuery: String): Element {
-	return Selector.selectFirst(cssQuery, this) ?: throw ParseException("Cannot find \"$cssQuery\"")
+	return Selector.selectFirst(cssQuery, this) ?: throw ParseException("Cannot find \"$cssQuery\"", baseUri())
+}
+
+fun Element.selectOrThrow(cssQuery: String): Elements {
+	return Selector.select(cssQuery, this).ifEmpty {
+		throw ParseException("Empty result for \"$cssQuery\"", baseUri())
+	}
 }

 fun Element.requireElementById(id: String): Element {
-	return getElementById(id) ?: throw ParseException("Cannot find \"#$id\"")
+	return getElementById(id) ?: throw ParseException("Cannot find \"#$id\"", baseUri())
 }

 fun Element.selectLast(cssQuery: String): Element? {
@@ -103,5 +113,5 @@ fun Element.selectLast(cssQuery: String): Element? {
 }

 fun Element.selectLastOrThrow(cssQuery: String): Element {
-	return selectLast(cssQuery) ?: throw ParseException("Cannot find \"$cssQuery\"")
+	return selectLast(cssQuery) ?: throw ParseException("Cannot find \"$cssQuery\"", baseUri())
 }
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/util/Paginator.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/util/Paginator.kt
@@ -0,0 +1,25 @@
+package org.koitharu.kotatsu.parsers.util
+
+import androidx.collection.SparseArrayCompat
+import androidx.collection.set
+
+class Paginator constructor(private val initialPageSize: Int) {
+
+	var firstPage = 1
+	private var pages = SparseArrayCompat<Int>()
+
+	fun getPage(offset: Int): Int {
+		if (offset == 0) { // just an optimization
+			return firstPage
+		}
+		pages[offset]?.let { return it }
+		val pageSize = initialPageSize
+		val intPage = offset / pageSize
+		val tail = offset % pageSize
+		return intPage + firstPage + if (tail == 0) 0 else 1
+	}
+
+	fun onListReceived(offset: Int, page: Int, count: Int) {
+		pages[offset + count] = if (count > 0) page + 1 else page
+	}
+}
--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/util/Parse.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/util/Parse.kt
@@ -68,10 +68,13 @@ fun String.toAbsoluteUrl(domain: String): String = when {
 }

 fun DateFormat.tryParse(str: String?): Long = if (str.isNullOrEmpty()) {
+	assert(false) { "Date string is null or empty" }
 	0L
 } else {
 	runCatching {
 		parse(str)?.time ?: 0L
+	}.onFailure {
+		assert(false) { "Cannot parse date $str: ${it.message}" }
 	}.getOrDefault(0L)
 }

--- a/src/main/kotlin/org/koitharu/kotatsu/parsers/util/json/JsonExt.kt
+++ b/src/main/kotlin/org/koitharu/kotatsu/parsers/util/json/JsonExt.kt
@@ -136,4 +136,8 @@ fun JSONArray?.isNullOrEmpty(): Boolean {
 	}

 	return this == null || this.length() == 0
+}
+
+fun JSONArray.toJSONList(): List<JSONObject> {
+	return List(length()) { i -> getJSONObject(i) }
 }
--- a/src/test/kotlin/org/koitharu/kotatsu/parsers/MangaParserTest.kt
+++ b/src/test/kotlin/org/koitharu/kotatsu/parsers/MangaParserTest.kt
@@ -30,6 +30,18 @@ internal class MangaParserTest {
 		assert(list.all { it.source == source })
 	}

+	@ParameterizedTest(name = "{index}|pagination|{0}")
+	@MangaSources
+	fun pagination(source: MangaSource) = runTest {
+		val parser = source.newParser(context)
+		val page1 = parser.getList(0, sortOrder = null, tags = null)
+		val page2 = parser.getList(page1.size, sortOrder = null, tags = null)
+		val intersection = page1.intersect(page2.toSet())
+		assert(intersection.isEmpty()) {
+			"Pages are intersected: " + intersection.joinToString { it.publicUrl }
+		}
+	}
+
 	@ParameterizedTest(name = "{index}|search|{0}")
 	@MangaSources
 	fun search(source: MangaSource) = runTest {
@@ -120,7 +132,7 @@ internal class MangaParserTest {
 	@MangaSources
 	fun favicon(source: MangaSource) = runTest {
 		val parser = source.newParser(context)
-		val favicons = parser.parseFavicons()
+		val favicons = parser.getFavicons()
 		val types = setOf("png", "svg", "ico", "gif", "jpg", "jpeg")
 		assert(favicons.isNotEmpty())
 		favicons.forEach {
--- a/src/test/kotlin/org/koitharu/kotatsu/parsers/util/PaginatorTest.kt
+++ b/src/test/kotlin/org/koitharu/kotatsu/parsers/util/PaginatorTest.kt
@@ -0,0 +1,42 @@
+package org.koitharu.kotatsu.parsers.util
+
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Test
+
+internal class PaginatorTest {
+
+	@Test
+	fun singlePaginationTest() {
+		val paginator = Paginator(24)
+		assertEquals(1, paginator.getPage(0))
+		assertEquals(2, paginator.getPage(24))
+		assertEquals(3, paginator.getPage(48))
+	}
+
+	@Test
+	fun adaptivePaginationTest() {
+		val paginator = Paginator(12)
+		assertEquals(1, paginator.getPage(0))
+		paginator.onListReceived(0, 1, 24)
+		assertEquals(2, paginator.getPage(24))
+		paginator.onListReceived(24, 2, 18)
+		assertEquals(3, paginator.getPage(42))
+	}
+
+	@Test
+	fun endReachPaginationTest() {
+		val pageSize = 24
+		val paginator = Paginator(pageSize)
+		var size = 0
+		repeat(5) { i ->
+			val offset = i * pageSize
+			assertEquals(i + 1, paginator.getPage(offset))
+			paginator.onListReceived(offset, i + 1, pageSize)
+			size += pageSize
+		}
+		val nextPage = paginator.getPage(size)
+		assertEquals(nextPage, paginator.getPage(size))
+		paginator.onListReceived(size, nextPage, 0)
+		assertEquals(nextPage, paginator.getPage(size))
+	}
+}
Author	SHA1	Message	Date
Koitharu	015e15b2fd	KomikTap parser #40	2022-09-07 13:06:34 +03:00
Koitharu	11f19b1f76	Add asserts	2022-09-07 13:05:23 +03:00
Koitharu	551a1d70ae	[MangaInUa] Fix chapters list #43	2022-09-03 10:48:35 +03:00
Koitharu	7ea80b51e1	Merge pull request #46 from VietAnh14/source/nettruyen [NetTruyen] New source	2022-09-02 16:42:24 +03:00
Koitharu	ca6d5c429c	Merge pull request #45 from VietAnh14/source/blogtruyen [BlogTruyen] New source	2022-09-02 16:42:10 +03:00
vianh	eb1bcac175	[NetTruyen] Synchronize tags with mutex, use WordSet as suggestion	2022-09-02 18:36:00 +07:00
ViAnh	704a063cb3	[NetTruyen] Apply suggestions from code review Co-authored-by: Koitharu <nvasya95@gmail.com>	2022-09-02 17:44:36 +07:00
vianh	1577afc4a9	[BlogTruyen] Synchronize tags with mutex	2022-09-02 17:35:43 +07:00
ViAnh	aec404c0a1	Apply suggestions from code review Co-authored-by: Koitharu <nvasya95@gmail.com>	2022-09-02 17:23:50 +07:00
vianh	1bad7eeb75	[NetTruyen] Update to use PagedMangaParser	2022-09-02 11:15:00 +07:00
vianh	e3612ef466	[BlogTruyen] Update to use PagedMangaParser	2022-09-02 10:57:28 +07:00
vianh	01cc33e309	[NetTruyen] New source	2022-09-02 00:44:54 +07:00
vianh	599f606aef	Remove deprecated favicon url	2022-09-01 22:27:48 +07:00
vianh	c976e0e4e0	[BlogTruyen] New source	2022-09-01 22:17:31 +07:00
Koitharu	f112a06ab6	[IsekaiScanEu] Fix chapters loading #41	2022-08-17 16:45:18 +03:00
Koitharu	8709c3dd0c	[Grouple] Fix rating parsing	2022-08-08 12:13:25 +03:00
Koitharu	e2308214a7	[MangaDex] Speed up large chapters list loading (hotfix)	2022-08-04 13:32:53 +03:00
Koitharu	baf6234a2a	[MangaDex] Speed up large chapters list loading	2022-08-04 13:19:48 +03:00
Koitharu	85bfe42ddf	[Tatakae Scans] Fix favicon	2022-07-30 17:11:08 +03:00
Zakhar Timoshenko	dac06ddd0b	[Tatakae Scans] New source	2022-07-30 15:10:44 +03:00
Koitharu	b632571ebc	Update readme	2022-07-28 10:04:07 +03:00
Koitharu	7588617316	New source: PrismaScans	2022-07-27 15:56:06 +03:00
Koitharu	dd6de64c44	New manga source: UnionManga	2022-07-27 15:56:06 +03:00
Zakhar Timoshenko	fadb06aabb	[Remanga] Fix details parsing	2022-07-20 19:41:49 +03:00
Koitharu	c4abb758f3	Make jsoup dependency api	2022-07-20 18:19:07 +03:00
Koitharu	6495ddf277	Add NotFoundException for 404 response	2022-07-20 17:09:37 +03:00
Koitharu	30071709af	Add base url to ParseException	2022-07-19 11:36:26 +03:00
Zakhar Timoshenko	37fda4bd9e	Oops!	2022-07-14 17:00:15 +03:00
Zakhar Timoshenko	a1dc901439	Update issue templates	2022-07-14 16:58:54 +03:00
Koitharu	6af8cec134	Update dependencies	2022-07-14 14:35:03 +03:00
Koitharu	67f6af63f8	[Madara] New source Mangas Origines (fr)	2022-07-14 11:59:00 +03:00
Koitharu	be595af075	Paginator class to compute page number by offset	2022-07-14 11:17:55 +03:00
Koitharu	c5c84c8630	Merge branch 'feature/favicons'	2022-07-13 15:13:56 +03:00
Koitharu	abc7eca40b	Rename parseFavicons to getFavicons	2022-07-13 15:13:46 +03:00
Koitharu	2d1907569b	[MangaLib] Fix authorization required detection	2022-07-12 10:43:29 +03:00
Koitharu	cb7a23950a	[BatoTo] Fix pages parsing	2022-07-12 10:38:25 +03:00
Koitharu	941cc61577	Ignore malformed domains while ops with cookies	2022-07-12 10:21:21 +03:00