MAL: add way to search by list items' titles

app/src/main/java/eu/kanade/tachiyomi/data/track/myanimelist/MyAnimeList.kt

@@ -22,6 +22,7 @@ class MyAnimeList(private val context: Context, id: Int) : TrackService(id) {
         const val REREADING = 7
 
         private const val SEARCH_ID_PREFIX = "id:"
+        private const val SEARCH_LIST_PREFIX = "my:"
     }
 
     private val json: Json by injectLazy()
@@ -88,6 +89,12 @@ class MyAnimeList(private val context: Context, id: Int) : TrackService(id) {
             }
         }
 
+        if (query.startsWith(SEARCH_LIST_PREFIX)) {
+            query.substringAfter(SEARCH_LIST_PREFIX).let { title ->
+                return api.findListItems(title)
+            }
+        }
+
         return api.search(query)
     }
 

app/src/main/java/eu/kanade/tachiyomi/data/track/myanimelist/MyAnimeListApi.kt

@@ -164,28 +164,13 @@ class MyAnimeListApi(private val client: OkHttpClient, interceptor: MyAnimeListI
     }
 
     suspend fun findListItem(track: Track, offset: Int = 0): Track? {
-        return withContext(Dispatchers.IO) {
+        val json = getListPage(offset)
-            val urlBuilder = "$baseApiUrl/users/@me/mangalist".toUri().buildUpon()
+        val obj = json.jsonObject
-                .appendQueryParameter("fields", "list_status")
-                .appendQueryParameter("limit", listPaginationAmount.toString())
-            if (offset > 0) {
-                urlBuilder.appendQueryParameter("offset", offset.toString())
-            }
-
-            val request = Request.Builder()
-                .url(urlBuilder.build().toString())
-                .get()
-                .build()
-            authClient.newCall(request)
-                .await()
-                .parseAs<JsonObject>()
-                .let {
-                    val obj = it.jsonObject
         val trackedManga = obj["data"]!!.jsonArray.find { data ->
             data.jsonObject["node"]!!.jsonObject["id"]!!.jsonPrimitive.int == track.media_id
         }
 
-                    when {
+        return when {
             // Found the item in the list
             trackedManga != null -> {
                 parseMangaItem(trackedManga.jsonObject["list_status"]!!.jsonObject, track)
@@ -200,6 +185,50 @@ class MyAnimeListApi(private val client: OkHttpClient, interceptor: MyAnimeListI
             }
         }
     }
+
+    suspend fun findListItems(query: String, offset: Int = 0): List<TrackSearch> {
+        return withContext(Dispatchers.IO) {
+            val json = getListPage(offset)
+            val obj = json.jsonObject
+
+            val matches = obj["data"]!!.jsonArray
+                .filter {
+                    it.jsonObject["node"]!!.jsonObject["title"]!!.jsonPrimitive.content.contains(
+                        query,
+                        ignoreCase = true
+                    )
+                }
+                .map {
+                    val id = it.jsonObject["node"]!!.jsonObject["id"]!!.jsonPrimitive.int
+                    async { getMangaDetails(id) }
+                }
+                .awaitAll()
+
+            // Check next page if there's more
+            if (!obj["paging"]!!.jsonObject["next"]?.jsonPrimitive?.contentOrNull.isNullOrBlank()) {
+                matches + findListItems(query, offset + listPaginationAmount)
+            } else {
+                matches
+            }
+        }
+    }
+
+    private suspend fun getListPage(offset: Int): JsonObject {
+        return withContext(Dispatchers.IO) {
+            val urlBuilder = "$baseApiUrl/users/@me/mangalist".toUri().buildUpon()
+                .appendQueryParameter("fields", "list_status")
+                .appendQueryParameter("limit", listPaginationAmount.toString())
+            if (offset > 0) {
+                urlBuilder.appendQueryParameter("offset", offset.toString())
+            }
+
+            val request = Request.Builder()
+                .url(urlBuilder.build().toString())
+                .get()
+                .build()
+            authClient.newCall(request)
+                .await()
+                .parseAs()
         }
     }