[NetTruyenVie] Fix fetch chapters

src/main/kotlin/org/koitharu/kotatsu/parsers/site/wpcomics/vi/NetTruyenVie.kt

@@ -5,11 +5,13 @@ import kotlinx.coroutines.coroutineScope
 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.MangaParserSource
 import org.koitharu.kotatsu.parsers.model.MangaState
 import org.koitharu.kotatsu.parsers.model.RATING_UNKNOWN
 import org.koitharu.kotatsu.parsers.site.wpcomics.WpComicsParser
 import org.koitharu.kotatsu.parsers.util.*
+import java.text.SimpleDateFormat
 
 @MangaSourceParser("NETTRUYENVIE", "NetTruyenVie", "vi")
 internal class NetTruyenVie(context: MangaLoaderContext) :
@@ -17,9 +19,10 @@ internal class NetTruyenVie(context: MangaLoaderContext) :
 
 	override suspend fun getDetails(manga: Manga): Manga = coroutineScope {
 		val fullUrl = manga.url.toAbsoluteUrl(domain)
-		val doc = webClient.httpGet(fullUrl).parseHtml()
+		val docDeferred = async { webClient.httpGet(fullUrl).parseHtml() }
-		val chaptersDeferred = async { getChapters(doc) }
+		val chaptersDeferred = async { fetchChapters(manga.url) }
 		val tagMap = getOrCreateTagMap()
+		val doc = docDeferred.await()
 		val tagsElement = doc.select("li.kind p.col-xs-8 a")
 		val mangaTags = tagsElement.mapNotNullToSet { tagMap[it.text()] }
 		manga.copy(
@@ -38,4 +41,29 @@ internal class NetTruyenVie(context: MangaLoaderContext) :
 			chapters = chaptersDeferred.await(),
 		)
 	}
+
+	private suspend fun fetchChapters(mangaUrl: String): List<MangaChapter> {
+		val slug = mangaUrl.substringAfterLast('/')
+		val chaptersUrl = "/Comic/Services/ComicService.asmx/ChapterList?slug=$slug".toAbsoluteUrl(domain)
+		val df = SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
+
+		val data = webClient.httpGet(chaptersUrl).parseJson().getJSONArray("data")
+		return List(data.length()) { i ->
+			val jo = data.getJSONObject(data.length() - 1 - i)
+			val chapterSlug = jo.getString("chapter_slug")
+			val chapterUrl = "/truyen-tranh/$slug/$chapterSlug"
+
+			MangaChapter(
+				id = generateUid(chapterUrl),
+				name = jo.getString("chapter_name"),
+				number = i + 1f,
+				volume = 0,
+				url = chapterUrl,
+				scanlator = null,
+				uploadDate = df.tryParse(jo.getString("updated_at")),
+				branch = null,
+				source = source,
+			)
+		}
+	}
 }