k3vinb5_aniyomi_bridge/lib/aniyomi_bridge.dart

import 'dart:io';
import 'package:flutter/services.dart';
import 'package:jni/jni.dart';
import 'package:path_provider/path_provider.dart';
import 'package:path/path.dart' as path;
import 'package:k3vinb5_aniyomi_bridge/jmodels/jvideo.dart';
import 'package:k3vinb5_aniyomi_bridge/jmodels/janiyomibridge.dart';
import 'package:k3vinb5_aniyomi_bridge/jmodels/jsanime.dart';
import 'package:k3vinb5_aniyomi_bridge/jmodels/jsepisode.dart';
import 'package:k3vinb5_aniyomi_bridge/jmodels/jsmanga.dart';
import 'package:k3vinb5_aniyomi_bridge/jmodels/jschapter.dart';
import 'package:k3vinb5_aniyomi_bridge/jmodels/jpage.dart';

class AniyomiBridge {

  static const String _aniyomiBridgeDir = "aniyomibridge";
  static const String _aniyomiBridgeAnimeExtensionsDir = "animeExtensions";
  static const String _aniyomiBridgeMangaExtensionsDir = "mangaExtensions";
  static const String _aniyomiBridgeJarName ="aniyomibridge-core.jar";
  static const String _packageAssetsDir = "packages/k3vinb5_aniyomi_bridge/assets";
  static late final JAniyomiBridge _jAniyomiBridge;
  static late final String _supportDirectoryPath;

  AniyomiBridge() {
    _initJvm();
  }

  Future<void> _initJvm() async {
    Directory supportDirectory = await getApplicationSupportDirectory();
    _supportDirectoryPath = supportDirectory.path;
    await _loadJarIfNeeded(supportDirectory);
    Jni.spawn(
      dylibDir: _getDylibDir(supportDirectory),
      classPath: _getClassPath(supportDirectory),
    );
    JAniyomiBridge.init();
    _jAniyomiBridge = JAniyomiBridge();
  }

  List<JSAnime> getAnimeSearchResults(String query, int page, String source) {
    JList<JObject?>? searchResults = _jAniyomiBridge.getAnimeSearchResults(JString.fromString(query), page, JString.fromString(source));
    if (searchResults == null) {
      return [];
    }
    return searchResults.cast<JObject?>().where(_jObjIsNotNull).map((jObj) => jObj!.as<JSAnime>(JSAnime.type)).toList();
  }

  List<JSManga> getMangaSearchResults(String query, int page, String source) {
    JList<JObject?>? searchResults = _jAniyomiBridge.getMangaSearchResults(JString.fromString(query), page, JString.fromString(source));
    if (searchResults == null) {
      return [];
    }
    return searchResults.cast<JObject?>().where(_jObjIsNotNull).map((jObj) => jObj!.as<JSManga>(JSManga.type)).toList();
  }

  List<JSEpisode> getEpisodeList(JSAnime sAnime, String source) {
    JList<JObject?>? episodeList = _jAniyomiBridge.getEpisodeList(sAnime, JString.fromString(source));
    if (episodeList == null) {
      return [];
    }
    return episodeList.cast<JObject?>().where(_jObjIsNotNull).map((jObj) => jObj!.as<JSEpisode>(JSEpisode.type)).toList();
  }

  List<JSChapter> getChapterList(JSManga sManga, String source) {
    JList<JObject?>? episodeList = _jAniyomiBridge.getEpisodeList(sManga, JString.fromString(source));
    if (episodeList == null) {
      return [];
    }
    return episodeList.cast<JObject?>().where(_jObjIsNotNull).map((jObj) => jObj!.as<JSChapter>(JSChapter.type)).toList();
  }

  List<JVideo> getVideoList(JSEpisode sEpisode, String source) {
    JList<JObject?>? videoList = _jAniyomiBridge.getVideoList(sEpisode, JString.fromString(source));
    if (videoList == null) {
      return [];
    }
    return videoList.cast<JObject?>().where(_jObjIsNotNull).map((jObj) => jObj!.as<JVideo>(JVideo.type)).toList();
  }

  List<JPage> getPageList(JSChapter sChapter, String source) {
    JList<JObject?>? videoList = _jAniyomiBridge.getVideoList(sChapter, JString.fromString(source));
    if (videoList == null) {
      return [];
    }
    return videoList.cast<JObject?>().where(_jObjIsNotNull).map((jObj) => jObj!.as<JPage>(JPage.type)).toList();
  }

 void loadAnimeExtension(String extensionUrl) {
    _jAniyomiBridge.loadAnimeExtension(JString.fromString(extensionUrl), JString.fromString(path.join(_supportDirectoryPath, _aniyomiBridgeAnimeExtensionsDir)));
 }

 void loadMangaExtension(String extensionUrl) {
   _jAniyomiBridge.loadMangaExtension(JString.fromString(extensionUrl), JString.fromString(path.join(_supportDirectoryPath, _aniyomiBridgeMangaExtensionsDir)));
 }

 List<String>? getLoadedAnimeExtensions() {
   JList<JString?>? loadedExtensions = _jAniyomiBridge.getAnimeLoadedExtensions();
   if (loadedExtensions == null) {
     return null;
   }
    return loadedExtensions.cast<JString>().map((jStr) => jStr.toDartString()).toList();
 }

  List<String>? getLoadedMangaExtensions() {
    JList<JString?>? loadedExtensions = _jAniyomiBridge.getMangaLoadedExtensions();
    if (loadedExtensions == null) {
      return null;
    }
    return loadedExtensions.cast<JString>().map((jStr) => jStr.toDartString()).toList();
  }

  bool Function(JObject? jObj) get _jObjIsNotNull => (jObj) => jObj != null;

  String _getDylibDir(Directory supportDirectory) {
    String executablePath = File(Platform.resolvedExecutable).parent.path;
    if (Platform.isLinux) {
     return path.join(executablePath, "jre", "customjre", "lib", "server");
    } else if (Platform.isMacOS) {
      return path.join(executablePath, "..", "Resources", "jre", "customjre", "lib", "server");
    } else if (Platform.isWindows) {
      return path.join(executablePath, "..", "jre", "customjre", "lib", "server");
    } else {
      throw UnsupportedError("Unsupported platform");
    }
  }

  List<String> _getClassPath(Directory supportDirectory) {
    return [path.join(supportDirectory.absolute.path, _aniyomiBridgeDir, _aniyomiBridgeJarName)];
  }

  Future<void> _loadJarIfNeeded(Directory supportDirectory) async {
    String aniyomiBridgeCorePath = path.join(supportDirectory.path, _aniyomiBridgeDir, _aniyomiBridgeJarName);
    File aniyomiBridgeCore = File(aniyomiBridgeCorePath);
    if (!(await aniyomiBridgeCore.exists())) {
      _copyAssetToFile("$_packageAssetsDir/$_aniyomiBridgeJarName", aniyomiBridgeCorePath);
    }
  }

  Future<File> _copyAssetToFile(String assetPath, String outPath) async {
    final byteData = await rootBundle.load(assetPath);
    final buffer = byteData.buffer.asUint8List();
    final file = File(outPath);
    await file.parent.create(recursive: true);
    await file.writeAsBytes(buffer, flush: true);
    return file;
  }
}