[AgsComics] Fix cover images

Close #1886

src/main/kotlin/org/koitharu/kotatsu/parsers/site/keyoapp/KeyoappParser.kt

@@ -119,15 +119,18 @@ internal abstract class KeyoappParser(
 		return manga
 	}
 
+	protected open val cover: (Element) -> String? = { div ->
+		div.selectFirst("a div.bg-cover")?.styleValueOrNull("background-image")?.cssUrl()
+	}
 
 	private fun addManga(div: Element): Manga {
 		val href = div.selectFirstOrThrow("a").attrAsRelativeUrl("href")
-		val cover = div.selectFirst("a div.bg-cover")
+		val coverUrl = cover(div)
 		return Manga(
 			id = generateUid(href),
 			url = href,
 			publicUrl = href.toAbsoluteUrl(div.host ?: domain),
-			coverUrl = cover?.styleValueOrNull("background-image")?.cssUrl(),
+			coverUrl = coverUrl,
 			title = (div.selectFirst("h3")?.text() ?: div.selectFirst("a")?.attr("title")).orEmpty(),
 			altTitles = emptySet(),
 			rating = RATING_UNKNOWN,

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

@@ -1,10 +1,24 @@
 package org.koitharu.kotatsu.parsers.site.keyoapp.en
 
+import org.jsoup.nodes.Element
 import org.koitharu.kotatsu.parsers.MangaLoaderContext
 import org.koitharu.kotatsu.parsers.MangaSourceParser
 import org.koitharu.kotatsu.parsers.model.MangaParserSource
 import org.koitharu.kotatsu.parsers.site.keyoapp.KeyoappParser
+import org.koitharu.kotatsu.parsers.util.styleValueOrNull
+import org.koitharu.kotatsu.parsers.util.cssUrl
 
 @MangaSourceParser("AGSCOMICS", "AgsComics", "en")
 internal class AgsComics(context: MangaLoaderContext) :
-	KeyoappParser(context, MangaParserSource.AGSCOMICS, "agrcomics.com")
+	KeyoappParser(context, MangaParserSource.AGSCOMICS, "agrcomics.com") {
+
+	override val cover: (Element) -> String? = { div ->
+		val coverDiv = div.selectFirst("div.bg-cover[style*=background-image]")
+			?: div.takeIf { it.hasClass("bg-cover") && it.hasAttr("style") }
+			?: div.selectFirst("[style*=background-image]")
+			?: throw Exception("Element or image url not found")
+
+		coverDiv.styleValueOrNull("background-image")?.cssUrl()
+	}
+
+}