Smart recommendations (#10)

* Pass manga through to RecommendsPager

* Implement smart recommendations

* Add null checks

* Add more anilistSmart tags

* Add fallback titles

Co-authored-by: she11sh0cked <she11sh0cked@users.noreply.github.com>

app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/BrowseSourceController.kt

@@ -133,14 +133,15 @@ open class BrowseSourceController(bundle: Bundle) :
     override fun getTitle(): String? {
         return when (mode) {
             Mode.CATALOGUE -> presenter.source.name
-            Mode.RECOMMENDS -> recommendsConfig!!.origTitle
+            Mode.RECOMMENDS -> recommendsConfig!!.manga.title
         }
     }
 
     override fun createPresenter(): BrowseSourcePresenter {
         return BrowseSourcePresenter(
             args.getLong(SOURCE_ID_KEY),
-            if (mode == Mode.RECOMMENDS) recommendsConfig!!.origTitle else args.getString(SEARCH_QUERY_KEY),
+            args.getString(SEARCH_QUERY_KEY),
+            searchManga = if (mode == Mode.RECOMMENDS) recommendsConfig?.manga else null,
             recommends = (mode == Mode.RECOMMENDS)
         )
     }
@@ -776,8 +777,9 @@ open class BrowseSourceController(bundle: Bundle) :
         }
         activity?.toast(activity?.getString(R.string.manga_added_library))
     }
+
     @Parcelize
-    data class RecommendsConfig(val origTitle: String, val origSource: Long) : Parcelable
+    data class RecommendsConfig(val manga: Manga) : Parcelable
 
     enum class Mode {
         CATALOGUE,

app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/BrowseSourcePresenter.kt

@@ -53,6 +53,7 @@ import xyz.nulldev.ts.api.http.serializer.FilterSerializer
 open class BrowseSourcePresenter(
     private val sourceId: Long,
     private val searchQuery: String? = null,
+    private val searchManga: Manga? = null,
     private val sourceManager: SourceManager = Injekt.get(),
     private val db: DatabaseHelper = Injekt.get(),
     private val prefs: PreferencesHelper = Injekt.get(),
@@ -154,8 +155,8 @@ open class BrowseSourcePresenter(
         subscribeToMangaInitializer()
 
         // Create a new pager.
-        pager = if (recommends) RecommendsPager(
+        pager = if (recommends && searchManga != null) RecommendsPager(
-            searchQuery!!
+            searchManga
         ) else createPager(query, filters)
 
         val sourceId = source.id

app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/RecommendsPager.kt

@@ -4,12 +4,15 @@ import android.util.Log
 import com.github.salomonbrys.kotson.array
 import com.github.salomonbrys.kotson.get
 import com.github.salomonbrys.kotson.jsonObject
+import com.github.salomonbrys.kotson.nullString
 import com.github.salomonbrys.kotson.obj
 import com.github.salomonbrys.kotson.string
 import com.google.gson.JsonParser
+import eu.kanade.tachiyomi.data.database.models.Manga
 import eu.kanade.tachiyomi.network.asObservableSuccess
 import eu.kanade.tachiyomi.source.model.MangasPage
 import eu.kanade.tachiyomi.source.model.SMangaImpl
+import java.util.Locale
 import okhttp3.HttpUrl.Companion.toHttpUrlOrNull
 import okhttp3.MediaType.Companion.toMediaTypeOrNull
 import okhttp3.OkHttpClient
@@ -18,7 +21,11 @@ import okhttp3.RequestBody.Companion.toRequestBody
 import rx.Observable
 import rx.schedulers.Schedulers
 
-open class RecommendsPager(val title: String, val preferredApi: API = API.MYANIMELIST) : Pager() {
+open class RecommendsPager(
+    val manga: Manga,
+    val smart: Boolean = true,
+    var preferredApi: API = API.MYANIMELIST
+) : Pager() {
     private val client = OkHttpClient.Builder().build()
 
     private fun myAnimeList(): Observable<List<SMangaImpl>>? {
@@ -29,7 +36,7 @@ open class RecommendsPager(val title: String, val preferredApi: API = API.MYANIM
             val urlBuilder = endpoint.newBuilder()
             urlBuilder.addPathSegment("search")
             urlBuilder.addPathSegment("manga")
-            urlBuilder.addQueryParameter("q", title)
+            urlBuilder.addQueryParameter("q", manga.title)
             val url = urlBuilder.build().toUrl()
 
             val request = Request.Builder()
@@ -96,9 +103,11 @@ open class RecommendsPager(val title: String, val preferredApi: API = API.MYANIM
         val query =
             """
             {
-                Media(search: "$title", type: MANGA) {
+                Media(search: "$manga.title", type: MANGA) {
                     title{
                         romaji
+                        english
+                        native
                     }
                     recommendations {
                         edges {
@@ -145,7 +154,9 @@ open class RecommendsPager(val title: String, val preferredApi: API = API.MYANIM
                     val rec = it["node"]["mediaRecommendation"].obj
                     Log.d("ANILIST RECOMMEND", "${rec["title"].obj["romaji"].string}")
                     SMangaImpl().apply {
-                        this.title = rec["title"].obj["romaji"].string
+                        this.title = rec["title"].obj["romaji"].nullString
+                            ?: rec["title"].obj["english"].nullString
+                                ?: rec["title"].obj["native"].string
                         this.thumbnail_url = rec["coverImage"].obj["large"].string
                         this.initialized = true
                         this.url = rec["siteUrl"].string
@@ -155,6 +166,23 @@ open class RecommendsPager(val title: String, val preferredApi: API = API.MYANIM
     }
 
     override fun requestNext(): Observable<MangasPage> {
+        if (smart) {
+            val myAnimeListPoints = 0
+            val anilistPoints =
+                anilistSmart.count { manga.genre!!.toLowerCase(Locale.ROOT).contains(it) }
+            val apiPoints = listOf(
+                API.MYANIMELIST to myAnimeListPoints,
+                API.ANILIST to anilistPoints
+            ).sortedWith(
+                compareBy(
+                    { (_, value) -> value },
+                    { (key, _) -> key == preferredApi }
+                )
+            )
+            preferredApi = apiPoints.last().first
+            Log.d("SMART RECOMMEND", preferredApi.toString())
+        }
+
         val apiList = API.values().toMutableList()
         apiList.removeAt(apiList.indexOf(preferredApi))
         apiList.add(0, preferredApi)
@@ -183,6 +211,8 @@ open class RecommendsPager(val title: String, val preferredApi: API = API.MYANIM
     companion object {
         private const val myAnimeListEndpoint = "https://api.jikan.moe/v3/"
         private const val anilistEndpoint = "https://graphql.anilist.co/"
+        private val anilistSmart =
+            listOf("manhua", "manhwa", "webtoon", "long strip", "korean", "chinese")
 
         enum class API { MYANIMELIST, ANILIST }
     }

app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaAllInOneController.kt

@@ -437,7 +437,7 @@ class MangaAllInOneController :
 
     // AZ -->
     private fun openRecommends() {
-        val recommendsConfig = BrowseSourceController.RecommendsConfig(presenter.manga.title, presenter.manga.source)
+        val recommendsConfig = BrowseSourceController.RecommendsConfig(presenter.manga)
 
         router?.pushController(
             BrowseSourceController(

app/src/main/java/eu/kanade/tachiyomi/ui/manga/info/MangaInfoController.kt

@@ -276,7 +276,7 @@ class MangaInfoController(private val fromSource: Boolean = false) :
 
     // AZ -->
     private fun openRecommends() {
-        val recommendsConfig = BrowseSourceController.RecommendsConfig(presenter.manga.title, presenter.manga.source)
+        val recommendsConfig = BrowseSourceController.RecommendsConfig(presenter.manga)
 
         parentController?.router?.pushController(
             BrowseSourceController(