[Manga4Life] Refactoring and fixes

src/main/kotlin/org/koitharu/kotatsu/parsers/site/en/Manga4Life.kt

@@ -4,19 +4,21 @@ import okhttp3.Headers
 import org.json.JSONArray
 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.PagedMangaParser
 import org.koitharu.kotatsu.parsers.config.ConfigKey
 import org.koitharu.kotatsu.parsers.model.*
 import org.koitharu.kotatsu.parsers.network.UserAgents
 import org.koitharu.kotatsu.parsers.util.*
-import org.koitharu.kotatsu.parsers.util.json.*
+import org.koitharu.kotatsu.parsers.util.json.getStringOrNull
+import org.koitharu.kotatsu.parsers.util.json.mapJSONIndexed
+import org.koitharu.kotatsu.parsers.util.json.toJSONList
 import java.text.SimpleDateFormat
-import java.util.EnumSet
+import java.util.*
 
 
 @MangaSourceParser("MANGA4LIFE", "Manga4Life", "en")
-internal class Manga4Life(context: MangaLoaderContext) : PagedMangaParser(context, MangaSource.MANGA4LIFE, 0) {
+internal class Manga4Life(context: MangaLoaderContext) : MangaParser(context, MangaSource.MANGA4LIFE) {
 
 	override val sortOrders: Set<SortOrder> = EnumSet.of(SortOrder.ALPHABETICAL)
 
@@ -26,30 +28,19 @@ internal class Manga4Life(context: MangaLoaderContext) : PagedMangaParser(contex
 		.add("User-Agent", UserAgents.CHROME_DESKTOP)
 		.build()
 
-
-	override suspend fun getListPage(
-		page: Int,
-		query: String?,
-		tags: Set<MangaTag>?,
-		sortOrder: SortOrder,
-	): List<Manga> {
-
-		if (page > 1) {
+	override suspend fun getList(offset: Int, query: String?, tags: Set<MangaTag>?, sortOrder: SortOrder): List<Manga> {
+		if (offset > 0) {
 			return emptyList()
 		}
-
-		val url = buildString {
-			append("https://$domain/search/")
-		}
-		val doc = webClient.httpGet(url).parseHtml()
+		val doc = webClient.httpGet("https://$domain/search/").parseHtml()
 		val json = JSONArray(
 			doc.selectFirstOrThrow("script:containsData(MainFunction)").data()
 				.substringAfter("vm.Directory = ").substringBefore("vm.GetIntValue").trim()
-				.replace(";", " "),
+				.replace(';', ' '),
 		)
 
 
-		val manga = ArrayList<Manga>()
+		val manga = ArrayList<Manga>(json.length())
 
 		for (i in 0 until json.length()) {
 			val m = json.getJSONObject(i)
@@ -60,7 +51,7 @@ internal class Manga4Life(context: MangaLoaderContext) : PagedMangaParser(contex
 					manga.add(
 						Manga(
 							id = generateUid(href),
-							title = m.getString("i").replace("-", " "),
+							title = m.getString("i").replace('-', ' '),
 							altTitle = null,
 							url = href,
 							publicUrl = href.toAbsoluteUrl(domain),
@@ -88,7 +79,7 @@ internal class Manga4Life(context: MangaLoaderContext) : PagedMangaParser(contex
 					manga.add(
 						Manga(
 							id = generateUid(href),
-							title = m.getString("i").replace("-", " "),
+							title = m.getString("i").replace('-', ' '),
 							altTitle = null,
 							url = href,
 							publicUrl = href.toAbsoluteUrl(domain),
@@ -106,7 +97,7 @@ internal class Manga4Life(context: MangaLoaderContext) : PagedMangaParser(contex
 				manga.add(
 					Manga(
 						id = generateUid(href),
-						title = m.getString("i").replace("-", " "),
+						title = m.getString("i").replace('-', ' '),
 						altTitle = null,
 						url = href,
 						publicUrl = href.toAbsoluteUrl(domain),
@@ -130,9 +121,12 @@ internal class Manga4Life(context: MangaLoaderContext) : PagedMangaParser(contex
 	override suspend fun getTags(): Set<MangaTag> {
 		val doc = webClient.httpGet("https://$domain/search/").parseHtml()
 		val tags = doc.selectFirstOrThrow("script:containsData(vm.AvailableFilters)").data()
-			.substringAfter("\"Genre\" \t\t: [").substringBefore("]").replace("'", "").split(",")
+			.substringAfter("\"Genre\" \t\t: [")
+			.substringBefore(']')
+			.replace("'", "")
+			.split(',')
 
-		return tags.mapNotNullToSet { tag ->
+		return tags.mapToSet { tag ->
 			MangaTag(
 				key = tag,
 				title = tag,
@@ -147,7 +141,7 @@ internal class Manga4Life(context: MangaLoaderContext) : PagedMangaParser(contex
 		val chapter = JSONArray(
 			JSONArray(
 				doc.selectFirstOrThrow("script:containsData(MainFunction)").data()
-					.substringAfter("vm.Chapters = ").substringBefore(";"),
+					.substringAfter("vm.Chapters = ").substringBefore(';'),
 			).toJSONList().reversed(),
 		)
 
@@ -167,7 +161,7 @@ internal class Manga4Life(context: MangaLoaderContext) : PagedMangaParser(contex
 			},
 			tags = doc.select(".list-group-item:contains(Genre(s):) a").mapNotNullToSet { a ->
 				MangaTag(
-					key = a.attr("href").substringAfterLast("="),
+					key = a.attr("href").substringAfterLast('='),
 					title = a.text(),
 					source = source,
 				)
@@ -178,7 +172,7 @@ internal class Manga4Life(context: MangaLoaderContext) : PagedMangaParser(contex
 			chapters = chapter.mapJSONIndexed { i, j ->
 				val indexChapter = j.getString("Chapter")!!
 				val url = "/read-online/" + manga.url.substringAfter("/manga/") + chapterURLEncode(indexChapter)
-				val name = j.getString("ChapterName").let {
+				val name = j.getStringOrNull("ChapterName").let {
 					if (it.isNullOrEmpty() || it == "null") "${j.getString("Type")} ${
 						chapterImage(
 							indexChapter,
@@ -186,7 +180,7 @@ internal class Manga4Life(context: MangaLoaderContext) : PagedMangaParser(contex
 						)
 					}" else it
 				}
-				val date = j.getString("Date")
+				val date = j.getStringOrNull("Date")
 				MangaChapter(
 					id = generateUid(url),
 					name = name,
@@ -207,14 +201,12 @@ internal class Manga4Life(context: MangaLoaderContext) : PagedMangaParser(contex
 		if (1 != t) {
 			index = "-index-$t"
 		}
-		val dgt = if (e.toInt() < 100100) {
-			4
-		} else if (e.toInt() < 101000) {
-			3
-		} else if (e.toInt() < 110000) {
-			2
-		} else {
-			1
+		val ei = e.toInt()
+		val dgt = when {
+			ei < 100100 -> 4
+			ei < 101000 -> 3
+			ei < 110000 -> 2
+			else -> 1
 		}
 		val n = e.substring(dgt, e.length - 1)
 		var suffix = ""
@@ -232,12 +224,10 @@ internal class Manga4Life(context: MangaLoaderContext) : PagedMangaParser(contex
 		val a = e.substring(1, e.length - 1).let { if (cleanString) it.replace(chapterImageRegex, "") else it }
 		// If b is not zero, indicates chapter has decimal numbering
 		val b = e.substring(e.length - 1).toInt()
-		return if (b == 0 && a.isNotEmpty()) {
-			a
-		} else if (b == 0 && a.isEmpty()) {
-			"0"
-		} else {
-			"$a.$b"
+		return when {
+			b == 0 && a.isNotEmpty() -> a
+			b == 0 && a.isEmpty() -> "0"
+			else -> "$a.$b"
 		}
 	}
 
@@ -246,19 +236,20 @@ internal class Manga4Life(context: MangaLoaderContext) : PagedMangaParser(contex
 		val doc = webClient.httpGet(fullUrl).parseHtml()
 		val script = doc.selectFirstOrThrow("script:containsData(MainFunction)").data()
 		val curChapter = JSONObject(
-			doc.selectFirstOrThrow("script:containsData(MainFunction)").data().substringAfter("vm.CurChapter = ")
-				.substringBefore(";"),
+			doc.selectFirstOrThrow("script:containsData(MainFunction)").data()
+				.substringAfter("vm.CurChapter = ")
+				.substringBefore(';'),
 		)
 		val pageTotal = curChapter.getString("Page")!!.toInt()
 		val host = "https://" +
-				script
-					.substringAfter("vm.CurPathName = \"", "")
-					.substringBefore("\"")
-					.also {
-						if (it.isEmpty()) {
-							throw Exception("Manga4Life is overloaded and blocking Tachiyomi right now. Wait for unblock.")
-						}
+			script
+				.substringAfter("vm.CurPathName = \"", "")
+				.substringBefore('"')
+				.also {
+					if (it.isEmpty()) {
+						throw Exception("Manga4Life is overloaded and blocking Tachiyomi right now. Wait for unblock.")
 					}
+				}
 		val titleURI = script.substringAfter("vm.IndexName = \"").substringBefore("\"")
 		val seasonURI = curChapter.getString("Directory")!!
 			.let { if (it.isEmpty()) "" else "$it/" }