[MF] Fix page list, added support for age-restricted chapters (#15275)

* [MF] Fix page list, added support for age-restricted chapters

* remove unused imports

* i guess we should add this?

src/en/mangafox/build.gradle

@@ -6,7 +6,12 @@ ext {
     extName = 'MangaFox'
     pkgNameSuffix = 'en.mangafox'
     extClass = '.MangaFox'
-    extVersionCode = 5
+    extVersionCode = 6
+    isNsfw = true
+}
+
+dependencies {
+    implementation(project(":lib-unpacker"))
 }
 
 apply from: "$rootDir/common.gradle"

src/en/mangafox/src/eu/kanade/tachiyomi/extension/en/mangafox/MangaFox.kt

@@ -1,5 +1,7 @@
 package eu.kanade.tachiyomi.extension.en.mangafox
 
+import android.webkit.CookieManager
+import eu.kanade.tachiyomi.lib.unpacker.Unpacker
 import eu.kanade.tachiyomi.network.GET
 import eu.kanade.tachiyomi.network.interceptor.rateLimit
 import eu.kanade.tachiyomi.source.model.Filter
@@ -8,12 +10,19 @@ import eu.kanade.tachiyomi.source.model.Page
 import eu.kanade.tachiyomi.source.model.SChapter
 import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.source.online.ParsedHttpSource
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.jsonArray
+import kotlinx.serialization.json.jsonPrimitive
+import okhttp3.Cookie
+import okhttp3.CookieJar
 import okhttp3.Headers
+import okhttp3.HttpUrl
 import okhttp3.HttpUrl.Companion.toHttpUrl
 import okhttp3.OkHttpClient
 import okhttp3.Request
 import org.jsoup.nodes.Document
 import org.jsoup.nodes.Element
+import uy.kohesive.injekt.injectLazy
 import java.text.SimpleDateFormat
 import java.util.Calendar
 import java.util.Locale
@@ -30,8 +39,36 @@ class MangaFox : ParsedHttpSource() {
 
     override val supportsLatest: Boolean = true
 
+    private val json by injectLazy<Json>()
+
     override val client: OkHttpClient = network.cloudflareClient.newBuilder()
         .rateLimit(1, 1)
+        // Force readway=2 cookie to get all page URLs at once
+        .cookieJar(object : CookieJar {
+            private val cookieManager by lazy { CookieManager.getInstance() }
+
+            init {
+                cookieManager.setCookie(mobileUrl.toHttpUrl().host, "readway=2")
+                cookieManager.setCookie(baseUrl.toHttpUrl().host, "isAdult=1")
+            }
+
+            override fun saveFromResponse(url: HttpUrl, cookies: List<Cookie>) {
+                val urlString = url.toString()
+                cookies.forEach { cookieManager.setCookie(urlString, it.toString()) }
+            }
+
+            override fun loadForRequest(url: HttpUrl): List<Cookie> {
+                val cookies = cookieManager.getCookie(url.toString())
+
+                return if (cookies != null && cookies.isNotEmpty()) {
+                    cookies.split(";").mapNotNull {
+                        Cookie.parse(url, it)
+                    }
+                } else {
+                    emptyList()
+                }
+            }
+        })
         .build()
 
     override fun headersBuilder(): Headers.Builder = super.headersBuilder().add("Referer", "$baseUrl/")
@@ -149,16 +186,26 @@ class MangaFox : ParsedHttpSource() {
     }
 
     override fun pageListRequest(chapter: SChapter): Request {
-        val mobilePath = chapter.url.replace("/manga/", "/roll_manga/")
-
-        val headers = headersBuilder().set("Referer", "$mobileUrl/").build()
-
-        return GET("$mobileUrl$mobilePath", headers)
+        val headers = headersBuilder()
+            .set("Referer", "$mobileUrl/")
+            .build()
+        return GET("$mobileUrl${chapter.url}", headers)
     }
 
-    override fun pageListParse(document: Document): List<Page> =
-        document.select("#viewer img").mapIndexed { idx, it ->
-            Page(idx, imageUrl = it.attr("abs:data-original"))
+    override fun pageListParse(document: Document): List<Page> {
+        val packed = document.selectFirst("script:containsData(p,a,c,k,e)").data()
+        val imagesRaw = Unpacker.unpack(packed)
+            .substringAfter("newImgs=")
+            .substringBefore(";")
+        return json.parseToJsonElement(imagesRaw).jsonArray.mapIndexed { idx, it ->
+            val rawImageUrl = it.jsonPrimitive.content
+            val imageUrl = if (rawImageUrl.startsWith("http")) {
+                rawImageUrl
+            } else {
+                "${mobileUrl.substringBefore("://")}:$rawImageUrl"
+            }
+            Page(idx, imageUrl = imageUrl)
+        }
     }
 
     override fun imageUrlParse(document: Document): String = throw UnsupportedOperationException("Not used")