Multiple tags support in (almost) all sources #19

app/src/main/java/org/koitharu/kotatsu/core/model/MangaFilter.kt

@@ -6,5 +6,5 @@ import kotlinx.parcelize.Parcelize
 @Parcelize
 data class MangaFilter(
 	val sortOrder: SortOrder?,
-	val tag: MangaTag?,
+	val tags: Set<MangaTag>,
 ) : Parcelable

app/src/main/java/org/koitharu/kotatsu/core/parser/MangaRepository.kt

@@ -9,24 +9,12 @@ interface MangaRepository {
 
 	val sortOrders: Set<SortOrder>
 
-	suspend fun getList(
+	suspend fun getList2(
 		offset: Int,
 		query: String? = null,
 		tags: Set<MangaTag>? = null,
 		sortOrder: SortOrder? = null,
-	): List<Manga> = if (tags == null || tags.size <= 1) {
-		getList(offset, query, sortOrder, tags?.singleOrNull())
-	} else {
-		throw NotImplementedError("Multiple filter are not supported by this source yet")
-	}
-
-	@Deprecated("Use multiple tag variant")
-	suspend fun getList(
-		offset: Int,
-		query: String? = null,
-		sortOrder: SortOrder? = null,
-		tag: MangaTag? = null,
-	): List<Manga> = throw NotImplementedError("This is fine")
+	): List<Manga>
 
 	suspend fun getDetails(manga: Manga): Manga
 

app/src/main/java/org/koitharu/kotatsu/core/parser/site/AnibelRepository.kt

@@ -16,7 +16,7 @@ class AnibelRepository(loaderContext: MangaLoaderContext) : RemoteMangaRepositor
 		SortOrder.NEWEST
 	)
 
-	override suspend fun getList(
+	override suspend fun getList2(
 		offset: Int,
 		query: String?,
 		tags: Set<MangaTag>?,

app/src/main/java/org/koitharu/kotatsu/core/parser/site/ChanRepository.kt

@@ -17,11 +17,11 @@ abstract class ChanRepository(loaderContext: MangaLoaderContext) : RemoteMangaRe
 		SortOrder.ALPHABETICAL
 	)
 
-	override suspend fun getList(
+	override suspend fun getList2(
 		offset: Int,
 		query: String?,
-		sortOrder: SortOrder?,
-		tag: MangaTag?
+		tags: Set<MangaTag>?,
+		sortOrder: SortOrder?
 	): List<Manga> {
 		val domain = getDomain()
 		val url = when {
@@ -31,7 +31,11 @@ abstract class ChanRepository(loaderContext: MangaLoaderContext) : RemoteMangaRe
 				}
 				"https://$domain/?do=search&subaction=search&story=${query.urlEncoded()}"
 			}
-			tag != null -> "https://$domain/tags/${tag.key}&n=${getSortKey2(sortOrder)}?offset=$offset"
+			!tags.isNullOrEmpty() -> tags.joinToString(
+				prefix = "https://$domain/tags/",
+				postfix = "&n=${getSortKey2(sortOrder)}?offset=$offset",
+				separator = "+",
+			) { tag -> tag.key }
 			else -> "https://$domain/${getSortKey(sortOrder)}?offset=$offset"
 		}
 		val doc = loaderContext.httpGet(url).parseHtml()

app/src/main/java/org/koitharu/kotatsu/core/parser/site/DesuMeRepository.kt

@@ -20,11 +20,11 @@ class DesuMeRepository(loaderContext: MangaLoaderContext) : RemoteMangaRepositor
 		SortOrder.ALPHABETICAL
 	)
 
-	override suspend fun getList(
+	override suspend fun getList2(
 		offset: Int,
 		query: String?,
-		sortOrder: SortOrder?,
-		tag: MangaTag?
+		tags: Set<MangaTag>?,
+		sortOrder: SortOrder?
 	): List<Manga> {
 		if (query != null && offset != 0) {
 			return emptyList()
@@ -37,9 +37,9 @@ class DesuMeRepository(loaderContext: MangaLoaderContext) : RemoteMangaRepositor
 			append(getSortKey(sortOrder))
 			append("&page=")
 			append((offset / 20) + 1)
-			if (tag != null) {
+			if (!tags.isNullOrEmpty()) {
 				append("&genres=")
-				append(tag.key)
+				appendAll(tags, ",") { it.key }
 			}
 			if (query != null) {
 				append("&search=")

app/src/main/java/org/koitharu/kotatsu/core/parser/site/ExHentaiRepository.kt

@@ -32,14 +32,7 @@ class ExHentaiRepository(
 		loaderContext.cookieJar.insertCookies(DOMAIN_UNAUTHORIZED, "nw=1", "sl=dm_2")
 	}
 
-	override suspend fun getList(
-		offset: Int,
-		query: String?,
-		sortOrder: SortOrder?,
-		tag: MangaTag?,
-	): List<Manga> = getList(offset, query, setOfNotNull(tag), sortOrder)
-
-	override suspend fun getList(
+	override suspend fun getList2(
 		offset: Int,
 		query: String?,
 		tags: Set<MangaTag>?,
@@ -80,7 +73,7 @@ class ExHentaiRepository(
 				parseFailed("Cannot find root")
 			} else {
 				updateDm = true
-				return getList(offset, query, tags, sortOrder)
+				return getList2(offset, query, tags, sortOrder)
 			}
 		updateDm = false
 		return root.children().mapNotNull { tr ->

app/src/main/java/org/koitharu/kotatsu/core/parser/site/GroupleRepository.kt

@@ -1,6 +1,7 @@
 package org.koitharu.kotatsu.core.parser.site
 
 import okhttp3.HttpUrl.Companion.toHttpUrl
+import okhttp3.Response
 import org.koitharu.kotatsu.base.domain.MangaLoaderContext
 import org.koitharu.kotatsu.core.exceptions.ParseException
 import org.koitharu.kotatsu.core.model.*
@@ -18,11 +19,11 @@ abstract class GroupleRepository(loaderContext: MangaLoaderContext) :
 		SortOrder.RATING
 	)
 
-	override suspend fun getList(
+	override suspend fun getList2(
 		offset: Int,
 		query: String?,
-		sortOrder: SortOrder?,
-		tag: MangaTag?
+		tags: Set<MangaTag>?,
+		sortOrder: SortOrder?
 	): List<Manga> {
 		val domain = getDomain()
 		val doc = when {
@@ -33,22 +34,24 @@ abstract class GroupleRepository(loaderContext: MangaLoaderContext) :
 					"offset" to (offset upBy PAGE_SIZE_SEARCH).toString()
 				)
 			)
-			tag == null -> loaderContext.httpGet(
+			tags.isNullOrEmpty() -> loaderContext.httpGet(
 				"https://$domain/list?sortType=${
 					getSortKey(
 						sortOrder
 					)
 				}&offset=${offset upBy PAGE_SIZE}"
 			)
-			else -> loaderContext.httpGet(
-				"https://$domain/list/genre/${tag.key}?sortType=${
+			tags.size == 1 -> loaderContext.httpGet(
+				"https://$domain/list/genre/${tags.first().key}?sortType=${
 					getSortKey(
 						sortOrder
 					)
 				}&offset=${offset upBy PAGE_SIZE}"
 			)
-		}.parseHtml()
-		val root = doc.body().getElementById("mangaBox")
+			offset > 0 -> return emptyList()
+			else -> advancedSearch(domain, tags)
+		}.parseHtml().body()
+		val root = (doc.getElementById("mangaBox") ?: doc.getElementById("mangaResults"))
 			?.selectFirst("div.tiles.row") ?: throw ParseException("Cannot find root")
 		val baseHost = root.baseUri().toHttpUrl().host
 		return root.select("div.tile").mapNotNull { node ->
@@ -182,6 +185,43 @@ abstract class GroupleRepository(loaderContext: MangaLoaderContext) :
 			null -> "updated"
 		}
 
+	private suspend fun advancedSearch(domain: String, tags: Set<MangaTag>): Response {
+		val url = "https://$domain/search/advanced"
+		// Step 1: map catalog genres names to advanced-search genres ids
+		val tagsIndex = loaderContext.httpGet(url).parseHtml()
+			.body().selectFirst("form.search-form")
+			?.select("div.form-group")
+			?.get(1) ?: parseFailed("Genres filter element not found")
+		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")
+			payload[id] = if (name in tagNames) {
+				foundGenres++
+				"in"
+			} else ""
+		}
+		if (foundGenres != tags.size) {
+			parseFailed("Some genres are not found")
+		}
+		// Step 2: advanced search
+		payload["q"] = ""
+		payload["s_high_rate"] = ""
+		payload["s_single"] = ""
+		payload["s_mature"] = ""
+		payload["s_completed"] = ""
+		payload["s_translated"] = ""
+		payload["s_many_chapters"] = ""
+		payload["s_wait_upload"] = ""
+		payload["s_sale"] = ""
+		payload["years"] = "1900,2099"
+		payload["+"] = "Искать".urlEncoded()
+		return loaderContext.httpPost(url, payload)
+	}
+
 	private companion object {
 
 		private const val PAGE_SIZE = 70

app/src/main/java/org/koitharu/kotatsu/core/parser/site/HenChanRepository.kt

@@ -11,13 +11,13 @@ class HenChanRepository(loaderContext: MangaLoaderContext) : ChanRepository(load
 	override val defaultDomain = "hentaichan.live"
 	override val source = MangaSource.HENCHAN
 
-	override suspend fun getList(
+	override suspend fun getList2(
 		offset: Int,
 		query: String?,
-		sortOrder: SortOrder?,
-		tag: MangaTag?
+		tags: Set<MangaTag>?,
+		sortOrder: SortOrder?
 	): List<Manga> {
-		return super.getList(offset, query, sortOrder, tag).map {
+		return super.getList2(offset, query, tags, sortOrder).map {
 			val cover = it.coverUrl
 			if (cover.contains("_blur")) {
 				it.copy(coverUrl = cover.replace("_blur", ""))

app/src/main/java/org/koitharu/kotatsu/core/parser/site/MangaLibRepository.kt

@@ -26,11 +26,11 @@ open class MangaLibRepository(loaderContext: MangaLoaderContext) :
 		SortOrder.NEWEST
 	)
 
-	override suspend fun getList(
+	override suspend fun getList2(
 		offset: Int,
 		query: String?,
-		sortOrder: SortOrder?,
-		tag: MangaTag?
+		tags: Set<MangaTag>?,
+		sortOrder: SortOrder?
 	): List<Manga> {
 		if (!query.isNullOrEmpty()) {
 			return if (offset == 0) search(query) else emptyList()
@@ -43,8 +43,8 @@ open class MangaLibRepository(loaderContext: MangaLoaderContext) :
 			append(getSortKey(sortOrder))
 			append("&page=")
 			append(page)
-			if (tag != null) {
-				append("&includeGenres[]=")
+			tags?.forEach { tag ->
+				append("&genres[include][]=")
 				append(tag.key)
 			}
 		}

app/src/main/java/org/koitharu/kotatsu/core/parser/site/MangaTownRepository.kt

@@ -23,11 +23,11 @@ class MangaTownRepository(loaderContext: MangaLoaderContext) :
 		SortOrder.UPDATED
 	)
 
-	override suspend fun getList(
+	override suspend fun getList2(
 		offset: Int,
 		query: String?,
-		sortOrder: SortOrder?,
-		tag: MangaTag?
+		tags: Set<MangaTag>?,
+		sortOrder: SortOrder?
 	): List<Manga> {
 		val sortKey = when (sortOrder) {
 			SortOrder.ALPHABETICAL -> "?name.az"
@@ -43,8 +43,13 @@ class MangaTownRepository(loaderContext: MangaLoaderContext) :
 				}
 				"/search?name=${query.urlEncoded()}".withDomain()
 			}
-			tag != null -> "/directory/${tag.key}/$page.htm$sortKey".withDomain()
-			else -> "/directory/$page.htm$sortKey".withDomain()
+			tags.isNullOrEmpty() -> "/directory/$page.htm$sortKey".withDomain()
+			tags.size == 1 -> "/directory/${tags.first().key}/$page.htm$sortKey".withDomain()
+			else -> tags.joinToString(
+				prefix = "/search?page=$page".withDomain()
+			) { tag ->
+				"&genres[${tag.key}]=1"
+			}
 		}
 		val doc = loaderContext.httpGet(url).parseHtml()
 		val root = doc.body().selectFirst("ul.manga_pic_list")

app/src/main/java/org/koitharu/kotatsu/core/parser/site/MangareadRepository.kt

@@ -20,12 +20,17 @@ class MangareadRepository(
 		SortOrder.POPULARITY
 	)
 
-	override suspend fun getList(
+	override suspend fun getList2(
 		offset: Int,
 		query: String?,
-		sortOrder: SortOrder?,
-		tag: MangaTag?
+		tags: Set<MangaTag>?,
+		sortOrder: SortOrder?
 	): List<Manga> {
+		val tag = when {
+			tags.isNullOrEmpty() -> null
+			tags.size == 1 -> tags.first()
+			else -> throw NotImplementedError("Multiple genres are not supported by this source")
+		}
 		val payload = createRequestTemplate()
 		payload["page"] = (offset / PAGE_SIZE.toFloat()).toIntUp().toString()
 		payload["vars[meta_key]"] = when (sortOrder) {

app/src/main/java/org/koitharu/kotatsu/core/parser/site/NineMangaRepository.kt

@@ -23,7 +23,7 @@ abstract class NineMangaRepository(
 		SortOrder.POPULARITY,
 	)
 
-	override suspend fun getList(
+	override suspend fun getList2(
 		offset: Int,
 		query: String?,
 		tags: Set<MangaTag>?,
@@ -146,7 +146,7 @@ abstract class NineMangaRepository(
 			val cateId = li.attr("cate_id") ?: return@mapNotNullToSet null
 			val a = li.selectFirst("a") ?: return@mapNotNullToSet null
 			MangaTag(
-				title = a.text(),
+				title = a.text().toTitleCase(),
 				key = cateId,
 				source = source
 			)

app/src/main/java/org/koitharu/kotatsu/core/parser/site/RemangaRepository.kt

@@ -9,7 +9,6 @@ import org.koitharu.kotatsu.core.model.*
 import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
 import org.koitharu.kotatsu.utils.ext.*
 import java.util.*
-import kotlin.collections.ArrayList
 
 class RemangaRepository(loaderContext: MangaLoaderContext) : RemoteMangaRepository(loaderContext) {
 
@@ -24,11 +23,11 @@ class RemangaRepository(loaderContext: MangaLoaderContext) : RemoteMangaReposito
 		SortOrder.NEWEST
 	)
 
-	override suspend fun getList(
+	override suspend fun getList2(
 		offset: Int,
 		query: String?,
-		sortOrder: SortOrder?,
-		tag: MangaTag?
+		tags: Set<MangaTag>?,
+		sortOrder: SortOrder?
 	): List<Manga> {
 		val domain = getDomain()
 		val urlBuilder = StringBuilder()
@@ -40,8 +39,9 @@ class RemangaRepository(loaderContext: MangaLoaderContext) : RemoteMangaReposito
 		} else {
 			urlBuilder.append("/api/search/catalog/?ordering=")
 				.append(getSortKey(sortOrder))
-			if (tag != null) {
-				urlBuilder.append("&genres=" + tag.key)
+			tags?.forEach { tag ->
+				urlBuilder.append("&genres=")
+				urlBuilder.append(tag.key)
 			}
 		}
 		urlBuilder

app/src/main/java/org/koitharu/kotatsu/list/ui/MangaListFragment.kt

@@ -217,10 +217,7 @@ abstract class MangaListFragment : BaseFragment<FragmentListBinding>(),
 		activity?.invalidateOptionsMenu()
 	}
 
-	@CallSuper
-	override fun onFilterChanged(filter: MangaFilter) {
-		drawer?.closeDrawers()
-	}
+	override fun onFilterChanged(filter: MangaFilter) = Unit
 
 	override fun onWindowInsetsChanged(insets: Insets) {
 		val headerHeight = (activity as? AppBarOwner)?.appBar?.measureHeight() ?: insets.top

app/src/main/java/org/koitharu/kotatsu/list/ui/filter/FilterAdapter.kt

@@ -6,19 +6,15 @@ import org.koitharu.kotatsu.base.ui.list.BaseViewHolder
 import org.koitharu.kotatsu.core.model.MangaFilter
 import org.koitharu.kotatsu.core.model.MangaTag
 import org.koitharu.kotatsu.core.model.SortOrder
-import java.util.*
 
 class FilterAdapter(
-	sortOrders: List<SortOrder> = emptyList(),
-	tags: List<MangaTag> = emptyList(),
+	private val sortOrders: List<SortOrder> = emptyList(),
+	private val tags: List<MangaTag> = emptyList(),
 	state: MangaFilter?,
 	private val listener: OnFilterChangedListener
 ) : RecyclerView.Adapter<BaseViewHolder<*, Boolean, *>>() {
 
-	private val sortOrders = ArrayList<SortOrder>(sortOrders)
-	private val tags = ArrayList(Collections.singletonList(null) + tags)
-
-	private var currentState = state ?: MangaFilter(sortOrders.firstOrNull(), null)
+	private var currentState = state ?: MangaFilter(sortOrders.firstOrNull(), emptySet())
 
 	override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) = when (viewType) {
 		VIEW_TYPE_SORT -> FilterSortHolder(parent).apply {
@@ -28,7 +24,7 @@ class FilterAdapter(
 		}
 		VIEW_TYPE_TAG -> FilterTagHolder(parent).apply {
 			itemView.setOnClickListener {
-				setCheckedTag(boundData)
+				setCheckedTag(boundData ?: return@setOnClickListener, !isChecked)
 			}
 		}
 		else -> throw IllegalArgumentException("Unknown viewType $viewType")
@@ -44,7 +40,7 @@ class FilterAdapter(
 			}
 			is FilterTagHolder -> {
 				val item = tags[position - sortOrders.size]
-				holder.bind(item, item == currentState.tag)
+				holder.bind(item, item in currentState.tags)
 			}
 		}
 	}
@@ -54,19 +50,25 @@ class FilterAdapter(
 		else -> VIEW_TYPE_TAG
 	}
 
-	fun setCheckedTag(tag: MangaTag?) {
-		if (tag != currentState.tag) {
-			val oldItemPos = tags.indexOf(currentState.tag)
-			val newItemPos = tags.indexOf(tag)
-			currentState = currentState.copy(tag = tag)
-			if (oldItemPos in tags.indices) {
-				notifyItemChanged(sortOrders.size + oldItemPos)
+	fun setCheckedTag(tag: MangaTag, isChecked: Boolean) {
+		currentState = if (tag in currentState.tags) {
+			if (!isChecked) {
+				currentState.copy(tags = currentState.tags - tag)
+			} else {
+				return
 			}
-			if (newItemPos in tags.indices) {
-				notifyItemChanged(sortOrders.size + newItemPos)
+		} else {
+			if (isChecked) {
+				currentState.copy(tags = currentState.tags + tag)
+			} else {
+				return
 			}
-			listener.onFilterChanged(currentState)
 		}
+		val index = tags.indexOf(tag)
+		if (index in tags.indices) {
+			notifyItemChanged(sortOrders.size + index)
+		}
+		listener.onFilterChanged(currentState)
 	}
 
 	fun setCheckedSort(sort: SortOrder) {

app/src/main/java/org/koitharu/kotatsu/list/ui/filter/FilterSortHolder.kt

@@ -12,7 +12,7 @@ class FilterSortHolder(parent: ViewGroup) :
 	) {
 
 	override fun onBind(data: SortOrder, extra: Boolean) {
-		binding.radio.setText(data.titleRes)
-		binding.radio.isChecked = extra
+		binding.root.setText(data.titleRes)
+		binding.root.isChecked = extra
 	}
 }

app/src/main/java/org/koitharu/kotatsu/list/ui/filter/FilterTagHolder.kt

@@ -2,18 +2,20 @@ package org.koitharu.kotatsu.list.ui.filter
 
 import android.view.LayoutInflater
 import android.view.ViewGroup
-import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.base.ui.list.BaseViewHolder
 import org.koitharu.kotatsu.core.model.MangaTag
-import org.koitharu.kotatsu.databinding.ItemCheckableSingleBinding
+import org.koitharu.kotatsu.databinding.ItemCheckableMultipleBinding
 
 class FilterTagHolder(parent: ViewGroup) :
-	BaseViewHolder<MangaTag?, Boolean, ItemCheckableSingleBinding>(
-		ItemCheckableSingleBinding.inflate(LayoutInflater.from(parent.context), parent, false)
+	BaseViewHolder<MangaTag, Boolean, ItemCheckableMultipleBinding>(
+		ItemCheckableMultipleBinding.inflate(LayoutInflater.from(parent.context), parent, false)
 	) {
 
-	override fun onBind(data: MangaTag?, extra: Boolean) {
-		binding.radio.text = data?.title ?: context.getString(R.string.all)
-		binding.radio.isChecked = extra
+	val isChecked: Boolean
+		get() = binding.root.isChecked
+
+	override fun onBind(data: MangaTag, extra: Boolean) {
+		binding.root.text = data.title
+		binding.root.isChecked = extra
 	}
 }

app/src/main/java/org/koitharu/kotatsu/local/domain/LocalMangaRepository.kt

@@ -25,11 +25,11 @@ class LocalMangaRepository(private val context: Context) : MangaRepository {
 
 	private val filenameFilter = CbzFilter()
 
-	override suspend fun getList(
+	override suspend fun getList2(
 		offset: Int,
 		query: String?,
-		sortOrder: SortOrder?,
-		tag: MangaTag?
+		tags: Set<MangaTag>?,
+		sortOrder: SortOrder?
 	): List<Manga> {
 		require(offset == 0) {
 			"LocalMangaRepository does not support pagination"

app/src/main/java/org/koitharu/kotatsu/local/ui/LocalListViewModel.kt

@@ -61,7 +61,7 @@ class LocalListViewModel(
 		launchLoadingJob(Dispatchers.Default) {
 			try {
 				listError.value = null
-				mangaList.value = repository.getList(0, tags = null)
+				mangaList.value = repository.getList2(0)
 			} catch (e: Throwable) {
 				listError.value = e
 			}

app/src/main/java/org/koitharu/kotatsu/remotelist/ui/RemoteListFragment.kt

@@ -31,7 +31,6 @@ class RemoteListFragment : MangaListFragment() {
 
 	override fun onFilterChanged(filter: MangaFilter) {
 		viewModel.applyFilter(filter)
-		super.onFilterChanged(filter)
 	}
 
 	override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {

app/src/main/java/org/koitharu/kotatsu/remotelist/ui/RemoteListViewModel.kt

@@ -78,10 +78,10 @@ class RemoteListViewModel(
 		loadingJob = launchLoadingJob(Dispatchers.Default) {
 			try {
 				listError.value = null
-				val list = repository.getList(
+				val list = repository.getList2(
 					offset = if (append) mangaList.value?.size ?: 0 else 0,
 					sortOrder = appliedFilter?.sortOrder,
-					tag = appliedFilter?.tag
+					tags = appliedFilter?.tags,
 				)
 				if (!append) {
 					mangaList.value = list

app/src/main/java/org/koitharu/kotatsu/search/domain/MangaSearchRepository.kt

@@ -29,7 +29,11 @@ class MangaSearchRepository(
 		MangaProviderFactory.getSources(settings, includeHidden = false).asFlow()
 			.flatMapMerge(concurrency) { source ->
 				runCatching {
-					source.repository.getList(0, query, SortOrder.POPULARITY)
+					source.repository.getList2(
+						offset = 0,
+						query = query,
+						sortOrder = SortOrder.POPULARITY
+					)
 				}.getOrElse {
 					emptyList()
 				}.asFlow()

app/src/main/java/org/koitharu/kotatsu/search/ui/SearchViewModel.kt

@@ -71,10 +71,9 @@ class SearchViewModel(
 		loadingJob = launchLoadingJob(Dispatchers.Default) {
 			try {
 				listError.value = null
-				val list = repository.getList(
+				val list = repository.getList2(
 					offset = if (append) mangaList.value?.size ?: 0 else 0,
-					tags = null,
-					query = query
+					query = query,
 				)
 				if (!append) {
 					mangaList.value = list

app/src/main/java/org/koitharu/kotatsu/utils/ext/StringExt.kt

@@ -48,6 +48,10 @@ fun String.toCamelCase(): String {
 	return result.toString()
 }
 
+fun String.toTitleCase(): String {
+	return replaceFirstChar { x -> x.uppercase() }
+}
+
 fun String.transliterate(skipMissing: Boolean): String {
 	val cyr = charArrayOf(
 		'а', 'б', 'в', 'г', 'д', 'е', 'ж', 'з', 'и', 'й', 'к', 'л', 'м', 'н', 'о', 'п',
@@ -200,4 +204,20 @@ fun String.levenshteinDistance(other: String): Int {
 	}
 
 	return cost[lhsLength - 1]
+}
+
+inline fun <T> StringBuilder.appendAll(
+	items: Iterable<T>,
+	separator: CharSequence,
+	transform: (T) -> CharSequence = { it.toString() },
+) {
+	var isFirst = true
+	for (item in items) {
+		if (isFirst) {
+			isFirst = false
+		} else {
+			append(separator)
+		}
+		append(transform(item))
+	}
 }

app/src/main/res/layout/item_checkable_multiple.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<CheckedTextView
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:tools="http://schemas.android.com/tools"
+	android:layout_width="match_parent"
+	android:layout_height="?android:listPreferredItemHeightSmall"
+	android:background="?android:selectableItemBackground"
+	android:drawableStart="?android:listChoiceIndicatorMultiple"
+	android:drawablePadding="12dp"
+	android:gravity="center_vertical|start"
+	android:paddingStart="?android:listPreferredItemPaddingStart"
+	android:paddingEnd="?android:listPreferredItemPaddingEnd"
+	tools:text="@tools:sample/full_names" />

app/src/main/res/layout/item_checkable_single.xml

@@ -2,7 +2,6 @@
 <CheckedTextView
 	xmlns:android="http://schemas.android.com/apk/res/android"
 	xmlns:tools="http://schemas.android.com/tools"
-	android:id="@+id/radio"
 	android:layout_width="match_parent"
 	android:layout_height="?android:listPreferredItemHeightSmall"
 	android:background="?android:selectableItemBackground"

app/src/test/java/org/koitharu/kotatsu/core/parser/RemoteMangaRepositoryTest.kt

@@ -38,15 +38,15 @@ class RemoteMangaRepositoryTest(private val source: MangaSource) : KoinTest {
 
 	@Test
 	fun list() = coroutineTestRule.runBlockingTest {
-		val list = repo.getList(20, query = null, sortOrder = SortOrder.POPULARITY, tag = null)
+		val list = repo.getList2(20, query = null, sortOrder = SortOrder.POPULARITY, tags = null)
 		checkMangaList(list)
 	}
 
 	@Test
 	fun search() = coroutineTestRule.runBlockingTest {
-		val subject = repo.getList(20, query = null, sortOrder = SortOrder.POPULARITY, tag = null)
+		val subject = repo.getList2(20, query = null, sortOrder = SortOrder.POPULARITY, tags = null)
 			.first()
-		val list = repo.getList(offset = 0, query = subject.title, sortOrder = null, tag = null)
+		val list = repo.getList2(offset = 0, query = subject.title, sortOrder = null, tags = null)
 		checkMangaList(list)
 		Truth.assertThat(list.map { it.url }).contains(subject.url)
 	}
@@ -63,13 +63,13 @@ class RemoteMangaRepositoryTest(private val source: MangaSource) : KoinTest {
 		Truth.assertThat(titles).doesNotContain("")
 		Truth.assertThat(tags.mapToSet { it.source }).containsExactly(source)
 
-		val list = repo.getList(offset = 0, tag = tags.last(), query = null, sortOrder = null)
+		val list = repo.getList2(offset = 0, tags = setOf(tags.last()), query = null, sortOrder = null)
 		checkMangaList(list)
 	}
 
 	@Test
 	fun details() = coroutineTestRule.runBlockingTest {
-		val list = repo.getList(20, query = null, sortOrder = SortOrder.POPULARITY, tag = null)
+		val list = repo.getList2(20, query = null, sortOrder = SortOrder.POPULARITY, tags = null)
 		val item = list.first()
 		val details = repo.getDetails(item)
 
@@ -87,7 +87,7 @@ class RemoteMangaRepositoryTest(private val source: MangaSource) : KoinTest {
 
 	@Test
 	fun pages() = coroutineTestRule.runBlockingTest {
-		val list = repo.getList(20, query = null, sortOrder = SortOrder.POPULARITY, tag = null)
+		val list = repo.getList2(20, query = null, sortOrder = SortOrder.POPULARITY, tags = null)
 		val chapter =
 			repo.getDetails(list.first()).chapters?.firstOrNull() ?: error("Chapter is null")
 		val pages = repo.getPages(chapter)