Base support for multiple tags in repositories

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

@@ -12,9 +12,21 @@ interface MangaRepository {
 	suspend fun getList(
 		offset: Int,
 		query: String? = null,
+		tags: Set<MangaTag>? = null,
 		sortOrder: SortOrder? = null,
-		tag: MangaTag? = null
-	): List<Manga>
+	): 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")
 
 	suspend fun getDetails(manga: Manga): Manga
 

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

@@ -1,7 +1,6 @@
 package org.koitharu.kotatsu.core.parser.site
 
 import org.koitharu.kotatsu.base.domain.MangaLoaderContext
-import org.koitharu.kotatsu.core.exceptions.ParseException
 import org.koitharu.kotatsu.core.model.*
 import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
 import org.koitharu.kotatsu.utils.ext.*
@@ -20,16 +19,20 @@ class AnibelRepository(loaderContext: MangaLoaderContext) : RemoteMangaRepositor
 	override suspend fun getList(
 		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()
 		}
 		val page = (offset / 12f).toIntUp().inc()
 		val link = when {
-			tag != null -> "/manga?genre[]=${tag.key}&page=$page".withDomain()
-			else -> "/manga?page=$page".withDomain()
+			tags.isNullOrEmpty() -> "/manga?page=$page".withDomain()
+			else -> tags.joinToString(
+				prefix = "/manga?",
+				postfix = "&page=$page",
+				separator = "&",
+			) { tag -> "genre[]=${tag.key}" }.withDomain()
 		}
 		val doc = loaderContext.httpGet(link).parseHtml()
 		val root = doc.body().select("div.manga-block") ?: parseFailed("Cannot find root")

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

@@ -26,30 +26,33 @@ abstract class NineMangaRepository(
 	override suspend fun getList(
 		offset: Int,
 		query: String?,
-		sortOrder: SortOrder?,
-		tag: MangaTag?,
+		tags: Set<MangaTag>?,
+		sortOrder: SortOrder?
 	): List<Manga> {
 		val page = (offset / PAGE_SIZE.toFloat()).toIntUp() + 1
 		val url = buildString {
 			append("https://")
 			append(getDomain())
-			if (query.isNullOrEmpty()) {
-				append("/category/")
-				if (tag != null) {
-					append(tag.key)
-				} else {
-					append("index")
+			when {
+				!query.isNullOrEmpty() -> {
+					append("/search/?name_sel=&wd=")
+					append(query.urlEncoded())
+					append("&page=")
+				}
+				!tags.isNullOrEmpty() -> {
+					append("/search/&category_id=")
+					for (tag in tags) {
+						append(tag.key)
+						append(',')
+					}
+					append("&page=")
+				}
+				else -> {
+					append("/category/index_")
 				}
-				append("_")
-				append(page)
-				append(".html")
-			} else {
-				append("/search/?name_sel=&wd=")
-				append(query.urlEncoded())
-				append("&page=")
-				append(page)
-				append(".html")
 			}
+			append(page)
+			append(".html")
 		}
 		val doc = loaderContext.httpGet(url, PREDEFINED_HEADERS).parseHtml()
 		val root = doc.body().selectFirst("ul.direlist")
@@ -136,14 +139,15 @@ abstract class NineMangaRepository(
 	}
 
 	override suspend fun getTags(): Set<MangaTag> {
-		val doc = loaderContext.httpGet("https://${getDomain()}/category/", PREDEFINED_HEADERS)
+		val doc = loaderContext.httpGet("https://${getDomain()}/search/?type=high", PREDEFINED_HEADERS)
 			.parseHtml()
-		val root = doc.body().selectFirst("ul.genreidex")
-		return root?.select("li")?.mapToSet { li ->
-			val a = li.selectFirst("a") ?: parseFailed("Link not found")
+		val root = doc.body().getElementById("search_form")
+		return root?.select("li.cate_list")?.mapNotNullToSet { li ->
+			val cateId = li.attr("cate_id") ?: return@mapNotNullToSet null
+			val a = li.selectFirst("a") ?: return@mapNotNullToSet null
 			MangaTag(
 				title = a.text(),
-				key = a.attr("href").substringBetweenLast("/", "."),
+				key = cateId,
 				source = source
 			)
 		} ?: parseFailed("Root not found")