import 'dart:convert';
import 'dart:io';

import 'package:dio/dio.dart';
import 'package:flutter/services.dart';
import 'package:flutter/widgets.dart';
import '../api/http.dart' as http;
import '../utils/encrypt_util.dart';
import '../utils/permission_util.dart';
import '../utils/share_utils.dart';
import '../utils/string_util.dart';
import '../utils/ui_constant.dart';
import '../utils/ui_utils.dart';
import '../utils/user_util.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:webview_flutter/platform_interface.dart';
import 'package:webview_flutter/webview_flutter.dart';
import 'package:path_provider/path_provider.dart';
import '../ui/widget/nav.dart';
import 'package:image_gallery_saver/image_gallery_saver.dart';

import 'config_util.dart';
import 'package:package_info/package_info.dart';

class JavascriptInterface {
  final BuildContext context;
  final WebViewController? _controller;

  JavascriptInterface(
      BuildContext this.context, WebViewController? this._controller);

  Set<JavascriptChannel> getInterfaces() {
    List<JavascriptChannel> list = [];
    list.add(JavascriptChannel(
        name: 'yestv',
        onMessageReceived: (JavascriptMessage message) {
          print("onMessageReceived");
          var data = jsonDecode(message.message);
          String method = data["method"];
          var params = data["params"];
          String? _callback = data["callback"];
          switch (method) {
            case "toast":
              toast(params);
              break;
            case "copyText":
              copyText(params);
              break;
            case "getUid":
              getUid(params, _callback);
              break;
            case "getAppName":
              getAppName(_callback);
              break;
            case "getRequestBaseParams":
              getRequestBaseParams(params, _callback);
              break;
            case "showRewardVideoAd":
              showRewardVideoAd(this.context, _callback);
              break;
            case "showLoading":
              showLoading();
              break;
            case "hideLoading":
              hideLoading();
              break;
            case "finishPage":
              finishPage();
              break;
            case "saveImg":
              String url = params["url"];
              saveImg(url);
              break;
            case "shareImg":
              String url = params["url"];
              String type = params["type"];
              shareImg(url, int.parse(type));
              break;
          }
        }));
    return list.toSet();
  }

  callback(String method, var params, {bool finish = true}) {
    _controller!.runJavascript("$method('$params')");
    if (finish) {
      _controller!.runJavascript("delete $method");
    }
  }

  //获取用户ID
  getUid(var params, String? callbackName) {
    if (callbackName != null) {
      UserUtil.getUid().then((value) {
        callback(callbackName, value != null ? value.toString() : "");
      });
    }
  }

  //获取用户ID
  getAppName(String? callbackName) {
    //
    PackageInfo.fromPlatform().then((PackageInfo packageInfo) {
      if (callbackName != null) {
        callback(callbackName, packageInfo.appName);
      }
    });
  }

  //toast
  toast(params) {
    if (params != null && params["msg"] != null) {
      ToastUtil.toast(params["msg"], context);
    }
  }

  copyText(params) {
    if (params != null && params["content"] != null) {
      Clipboard.setData(ClipboardData(text: params["content"]));
    }
  }

  //获取基本的网络请求参数
  getRequestBaseParams(var params, String? callbackName) {
    var ps = {};
    if (params != null) {
      ps.addAll(params);
    }
    http.HttpUtil.getBaseParams(params).then((value) {
      String result = jsonEncode(value);
      if (callbackName != null) {
        callback(callbackName, result);
      }
    });
  }

  //展示激励视频
  showRewardVideoAd(BuildContext context, String? callbackName) {
    // AdUtil.getAdInfo(context, AdPosition.vipReward).then((value) {
    //   AdUtil.loadReward(value, (status, msg) {
    //     switch (status) {
    //       case RewardAdStatus.verify:
    //         callback(callbackName!, 3, finish: false);
    //         break;
    //       case RewardAdStatus.ready:
    //         callback(callbackName!, 1, finish: false);
    //         break;
    //       case RewardAdStatus.close:
    //         callback(callbackName!, 10, finish: true);
    //         break;
    //       case RewardAdStatus.click:
    //         callback(callbackName!, 2, finish: false);
    //         break;
    //       case RewardAdStatus.fail:
    //         callback(callbackName!, 0, finish: true);
    //         break;
    //     }
    //   });
    // });
  }

  showLoading() {
    http.showLoading(context);
  }

  hideLoading() {
    popPage(context);
  }

  //结束页面
  finishPage() {
    popPage(context);
  }

  Future<bool> _dowloadImg(String url, String path) async {
    PermissionStatus status =
        await PermissionUtil.openPermission(Permission.storage, force: true);
    if (status != PermissionStatus.granted) {
      return false;
    }

    //下载图片
    Dio dio = Dio();
    //设置连接超时时间
    dio.options.connectTimeout = 20000;
    //设置数据接收超时时间
    dio.options.receiveTimeout = 20000;
    Response response;
    try {
      response = await dio.download(url, path);
      if (response.statusCode == 200) {
        await ImageGallerySaver.saveFile(path);
        return true;
      } else {
        return false;
      }
    } catch (e) {
      ToastUtil.toast("网络连接失败", context);
      return false;
    }
  }

  //保存图片
  saveImg(String url) {
    Future<Directory?> dir;
    if (Platform.isAndroid) {
      dir = getExternalStorageDirectory();
    } else {
      dir = getApplicationDocumentsDirectory();
    }
    dir.then((value) {
      if (value == null) {
        ToastUtil.toast("获取缓存目录失败", context);
        return;
      }

      String doc = value.path;
      String path = doc + "/" + EncryptUtil.MD5(url) + ".png";
      _dowloadImg(url, path).then((value) {
        if (value) {
          ToastUtil.toast("保存成功", context);
        }
      });
    });
  }

  ///分享图片
  ///type: 1-微信  2-qq 3-新浪
  shareImg(String url, int type) {
    getTemporaryDirectory().then((value) {
      String path = value.path + "/" + EncryptUtil.MD5(url) + ".png";
      _dowloadImg(url, path).then((value) {
        if (value) {
          //开始分享
          switch (type) {
            case 1:
              ShareUtil.shareImg(context, File(path), SharePlatform.wx);
              break;
            case 2:
              ShareUtil.shareImg(context, File(path), SharePlatform.qq);
              break;
            case 3:
              ShareUtil.shareImg(context, File(path), SharePlatform.sina);
              break;
          }
        }
      });
    });
  }
}