[skip ci] feat(lib): Convert Mixdrop extractor into a shared lib (#1552)

lib/mixdrop-extractor/build.gradle.kts

@@ -0,0 +1,22 @@
+plugins {
+    id("com.android.library")
+    kotlin("android")
+}
+
+android {
+    compileSdk = AndroidConfig.compileSdk
+    namespace = "eu.kanade.tachiyomi.lib.mixdropextractor"
+
+    defaultConfig {
+        minSdk = AndroidConfig.minSdk
+        targetSdk = AndroidConfig.targetSdk
+    }
+}
+
+dependencies {
+    compileOnly(libs.kotlin.stdlib)
+    compileOnly(libs.okhttp)
+    compileOnly(libs.aniyomi.lib)
+    compileOnly(libs.jsoup)
+    implementation(project(":lib-unpacker"))
+}

lib/mixdrop-extractor/src/main/java/eu/kanade/tachiyomi/lib/mixdropextractor/MixDropExtractor.kt

@@ -0,0 +1,40 @@
+package eu.kanade.tachiyomi.lib.mixdropextractor
+
+import eu.kanade.tachiyomi.animesource.model.Track
+import eu.kanade.tachiyomi.animesource.model.Video
+import eu.kanade.tachiyomi.lib.unpacker.Unpacker
+import eu.kanade.tachiyomi.network.GET
+import eu.kanade.tachiyomi.util.asJsoup
+import okhttp3.Headers
+import okhttp3.OkHttpClient
+import java.net.URLDecoder
+
+class MixDropExtractor(private val client: OkHttpClient) {
+    fun videoFromUrl(url: String, lang: String = "", prefix: String = ""): List<Video> {
+        val doc = client.newCall(GET(url)).execute().asJsoup()
+        val unpacked = doc.selectFirst("script:containsData(eval):containsData(MDCore)")
+            ?.data()
+            ?.let(Unpacker::unpack)
+            ?: return emptyList()
+
+        val videoUrl = "https:" + unpacked.substringAfter("Core.wurl=\"")
+            .substringBefore("\"")
+
+        val subs = if ("Core.remotesub" in unpacked) {
+            val subUrl = unpacked.substringAfter("Core.remotesub=\"").substringBefore("\"")
+            listOf(Track(URLDecoder.decode(subUrl, "utf-8"), "sub"))
+        } else {
+            emptyList()
+        }
+
+        val quality = prefix + ("MixDrop").let {
+            when {
+                lang.isNotBlank() -> "$it($lang)"
+                else -> it
+            }
+        }
+
+        val headers = Headers.headersOf("Referer", "https://mixdrop.co/")
+        return listOf(Video(videoUrl, quality, videoUrl, headers = headers, subtitleTracks = subs))
+    }
+}