import 'package:fis_live/controller/adapters/single/adapter_io.dart';
import 'package:fis_live/controller/controller.dart';
import 'package:fis_live/controller/exception.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter_inappwebview/flutter_inappwebview.dart';

import '../data_root.dart';

/// 单路画面直播视图
class SingleChannelView extends StatefulWidget {
  const SingleChannelView({super.key});

  @override
  State<SingleChannelView> createState() => _SingleChannelViewState();
}

class _SingleChannelViewState extends State<SingleChannelView> {
  late final LiveShareDateProxy dataProxy;

  LiveController get controller => dataProxy.controller;
  LiveControllerSingleIOAdapter get adapter =>
      controller.adapter! as LiveControllerSingleIOAdapter;
  InAppWebViewController get wvController => adapter.webViewController!;

  @override
  void initState() {
    super.initState();
  }

  @override
  void didChangeDependencies() {
    dataProxy = LiveShareDateProxy.of(context)!;
    controller.adapter = LiveControllerSingleIOAdapter();
    super.didChangeDependencies();
  }

  @override
  Widget build(BuildContext context) {
    return _buildWebView();
  }

  Widget _buildWebView() {
    return InAppWebView(
      initialFile: "assets/wwwroot/source.html",
      initialOptions: InAppWebViewGroupOptions(
        crossPlatform: InAppWebViewOptions(
          mediaPlaybackRequiresUserGesture: false,
          disableHorizontalScroll: true,
          disableVerticalScroll: true,
          allowFileAccessFromFileURLs: true,
          allowUniversalAccessFromFileURLs: true,
        ),
      ),
      onWebViewCreated: (c) {
        adapter.webViewController = c;
        c.addJavaScriptHandler(handlerName: 'onReady', callback: _onReady);
        c.addJavaScriptHandler(handlerName: 'onStart', callback: _onStart);
        c.addJavaScriptHandler(handlerName: 'onStop', callback: _onStop);
        c.addJavaScriptHandler(handlerName: 'onTimeout', callback: _onTimeout);
        c.addJavaScriptHandler(handlerName: 'onError', callback: _onError);
        c.addJavaScriptHandler(handlerName: 'onBuffering', callback: _onError);
      },
      onLoadStop: (c, url) {},
      onConsoleMessage: (c, consoleMessage) {
        print(
            "[WebView Console][${consoleMessage.messageLevel}] ${consoleMessage.message}");
      },
    );
  }

  dynamic _onReady(List args) {
    final url = controller.source.url;
    wvController.evaluateJavascript(source: "load('$url')");
    controller.ready.emit(this, null);
  }

  dynamic _onStart(List args) {
    controller.playStarted.emit(this, null);
  }

  dynamic _onStop(List args) {
    controller.playStopped.emit(this, null);
  }

  dynamic _onTimeout(List args) {
    controller.timeout.emit(this, null);
  }

  dynamic _onError(List args) {
    final error = args.first;
    controller.errorOccurred.emit(
      this,
      FLivePlayerException(error.code, error.msg),
    );
  }
}