import 'dart:convert';
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import 'dart:io';
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import 'package:dio/dio.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter/widgets.dart';
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import '../api/http.dart' as http;
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import '../utils/encrypt_util.dart';
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import '../utils/permission_util.dart';
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import '../utils/share_utils.dart';
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import '../utils/string_util.dart';
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import '../utils/ui_constant.dart';
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import '../utils/ui_utils.dart';
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import '../utils/user_util.dart';
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import 'package:permission_handler/permission_handler.dart';
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import 'package:webview_flutter/platform_interface.dart';
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import 'package:webview_flutter/webview_flutter.dart';
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import 'package:path_provider/path_provider.dart';
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import '../ui/widget/nav.dart';
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import 'package:image_gallery_saver/image_gallery_saver.dart';
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import 'config_util.dart';
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import 'package:package_info/package_info.dart';
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class JavascriptInterface {
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final BuildContext context;
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final WebViewController? _controller;
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JavascriptInterface(
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BuildContext this.context, WebViewController? this._controller);
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Set<JavascriptChannel> getInterfaces() {
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List<JavascriptChannel> list = [];
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list.add(JavascriptChannel(
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name: 'yestv',
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onMessageReceived: (JavascriptMessage message) {
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print("onMessageReceived");
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var data = jsonDecode(message.message);
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String method = data["method"];
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var params = data["params"];
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String? _callback = data["callback"];
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switch (method) {
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case "toast":
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toast(params);
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break;
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case "copyText":
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copyText(params);
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break;
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case "getUid":
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getUid(params, _callback);
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break;
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case "getAppName":
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getAppName(_callback);
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break;
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case "getRequestBaseParams":
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getRequestBaseParams(params, _callback);
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break;
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case "showRewardVideoAd":
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showRewardVideoAd(this.context, _callback);
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break;
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case "showLoading":
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showLoading();
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break;
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case "hideLoading":
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hideLoading();
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break;
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case "finishPage":
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finishPage();
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break;
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case "saveImg":
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String url = params["url"];
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saveImg(url);
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break;
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case "shareImg":
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String url = params["url"];
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String type = params["type"];
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shareImg(url, int.parse(type));
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break;
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}
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}));
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return list.toSet();
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}
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callback(String method, var params, {bool finish = true}) {
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_controller!.runJavascript("$method('$params')");
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if (finish) {
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_controller!.runJavascript("delete $method");
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}
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}
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//获取用户ID
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getUid(var params, String? callbackName) {
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if (callbackName != null) {
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UserUtil.getUid().then((value) {
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callback(callbackName, value != null ? value.toString() : "");
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});
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}
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}
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//获取用户ID
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getAppName(String? callbackName) {
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//
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PackageInfo.fromPlatform().then((PackageInfo packageInfo) {
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if (callbackName != null) {
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callback(callbackName, packageInfo.appName);
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}
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});
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}
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//toast
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toast(params) {
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if (params != null && params["msg"] != null) {
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ToastUtil.toast(params["msg"], context);
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}
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}
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copyText(params) {
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if (params != null && params["content"] != null) {
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Clipboard.setData(ClipboardData(text: params["content"]));
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}
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}
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//获取基本的网络请求参数
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getRequestBaseParams(var params, String? callbackName) {
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var ps = {};
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if (params != null) {
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ps.addAll(params);
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}
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http.HttpUtil.getBaseParams(params).then((value) {
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String result = jsonEncode(value);
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if (callbackName != null) {
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callback(callbackName, result);
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}
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});
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}
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//展示激励视频
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showRewardVideoAd(BuildContext context, String? callbackName) {
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// AdUtil.getAdInfo(context, AdPosition.vipReward).then((value) {
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// AdUtil.loadReward(value, (status, msg) {
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// switch (status) {
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// case RewardAdStatus.verify:
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// callback(callbackName!, 3, finish: false);
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// break;
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// case RewardAdStatus.ready:
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// callback(callbackName!, 1, finish: false);
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// break;
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// case RewardAdStatus.close:
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// callback(callbackName!, 10, finish: true);
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// break;
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// case RewardAdStatus.click:
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// callback(callbackName!, 2, finish: false);
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// break;
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// case RewardAdStatus.fail:
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// callback(callbackName!, 0, finish: true);
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// break;
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// }
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// });
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// });
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}
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showLoading() {
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http.showLoading(context);
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}
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hideLoading() {
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popPage(context);
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}
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//结束页面
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finishPage() {
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popPage(context);
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}
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Future<bool> _dowloadImg(String url, String path) async {
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PermissionStatus status =
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await PermissionUtil.openPermission(Permission.storage, force: true);
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if (status != PermissionStatus.granted) {
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return false;
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}
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//下载图片
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Dio dio = Dio();
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//设置连接超时时间
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dio.options.connectTimeout = 20000;
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//设置数据接收超时时间
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dio.options.receiveTimeout = 20000;
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Response response;
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try {
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response = await dio.download(url, path);
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if (response.statusCode == 200) {
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await ImageGallerySaver.saveFile(path);
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return true;
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} else {
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return false;
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}
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} catch (e) {
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ToastUtil.toast("网络连接失败", context);
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return false;
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}
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}
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//保存图片
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saveImg(String url) {
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Future<Directory?> dir;
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if (Platform.isAndroid) {
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dir = getExternalStorageDirectory();
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} else {
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dir = getApplicationDocumentsDirectory();
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}
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dir.then((value) {
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if (value == null) {
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ToastUtil.toast("获取缓存目录失败", context);
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return;
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}
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String doc = value.path;
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String path = doc + "/" + EncryptUtil.MD5(url) + ".png";
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_dowloadImg(url, path).then((value) {
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if (value) {
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ToastUtil.toast("保存成功", context);
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}
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});
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});
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}
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///分享图片
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///type: 1-微信 2-qq 3-新浪
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shareImg(String url, int type) {
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getTemporaryDirectory().then((value) {
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String path = value.path + "/" + EncryptUtil.MD5(url) + ".png";
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_dowloadImg(url, path).then((value) {
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if (value) {
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//开始分享
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switch (type) {
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case 1:
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ShareUtil.shareImg(context, File(path), SharePlatform.wx);
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break;
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case 2:
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ShareUtil.shareImg(context, File(path), SharePlatform.qq);
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break;
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case 3:
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ShareUtil.shareImg(context, File(path), SharePlatform.sina);
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break;
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}
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}
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});
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});
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}
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}
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