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

import 'package:auto_route/auto_route.dart';
import 'package:eitc_erm_dental_flutter/app_router.gr.dart';
import 'package:eitc_erm_dental_flutter/entity/history_item_info.dart';
import 'package:eitc_erm_dental_flutter/funcs.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter_inappwebview/flutter_inappwebview.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';

import '../../widget/webview_progress_bar.dart';
import '../history/select_history_page.dart';

///在线问诊页面
@RoutePage(name: "onlineConsultationRoute")
class OnlineConsultationPage extends StatefulWidget {
  final String url;
  final bool backAlert;

  const OnlineConsultationPage(
      {super.key, required this.url, this.backAlert = false});

  @override
  State<OnlineConsultationPage> createState() => _OnlineConsultationPageState();
}

class _OnlineConsultationPageState extends State<OnlineConsultationPage> {
  final GlobalKey _webViewKey = GlobalKey();

  InAppWebViewController? _webViewController;
  final InAppWebViewSettings _settings = InAppWebViewSettings(
      isInspectable: kDebugMode,
      mediaPlaybackRequiresUserGesture: true,
      allowsInlineMediaPlayback: true,
      iframeAllowFullscreen: true,
      javaScriptEnabled: true,
      allowFileAccess: true,
      allowFileAccessFromFileURLs: true);

  final WebviewProgressBarController _progressBarController =
      WebviewProgressBarController();

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

  @override
  void dispose() {
    super.dispose();
    _progressBarController.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return PopScope(
        canPop: !widget.backAlert,
        onPopInvokedWithResult: _onPop,
        child: Scaffold(
          body: SafeArea(
              child: Stack(
            children: [
              InAppWebView(
                key: _webViewKey,
                initialSettings: _settings,
                onWebViewCreated: (controller) {
                  _webViewController = controller;
                  _load();
                  _initHandler();
                },
                onLoadStart: (controller, url) {
                  logd("onLoadStart,url=$url");
                },
                onPermissionRequest: (controller, request) async {
                  return PermissionResponse(
                      resources: request.resources,
                      action: PermissionResponseAction.GRANT);
                },
                onLoadStop: (controller, url) async {
                  logd("onLoadStop,url=$url");
                },
                onReceivedError: (controller, request, error) {
                  loge("onReceivedError", error: error);
                },
                onProgressChanged: (controller, progress) {
                  logd("onProgressChanged,progress=$progress");
                  _progressBarController.setProgress(progress);
                },
                onConsoleMessage: (controller, consoleMessage) {
                  if (kDebugMode) {
                    logd(consoleMessage);
                  }
                },
              ),
              Align(
                alignment: Alignment.topLeft,
                child: WebviewProgressBar(controller: _progressBarController),
              )
            ],
          )),
        ));
  }

  void _onPop(bool didPop, dynamic result) async {
    if (didPop) {
      return;
    }
    bool? bo = await showDialog(
        context: context,
        builder: (ctx) {
          return AlertDialog(
            title: Text(getS().hint),
            content: Text(getS().closeCurrentPageHint),
            actions: [
              TextButton(
                  onPressed: () => Navigator.pop(ctx, false),
                  child: Text(getS().cancel)),
              TextButton(
                  onPressed: () => Navigator.pop(ctx, true),
                  child: Text(getS().confirm)),
            ],
            shape: RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(15.r)),
          );
        });
    if (bo ?? false) {
      if (mounted) {
        Navigator.pop(context);
      }
    }
  }

  ///加载
  void _load() {
    if (widget.url.isEmpty) {
      return;
    }
    _webViewController?.loadUrl(
        urlRequest: URLRequest(url: WebUri(widget.url)));
  }

  void _initHandler() {
    _webViewController?.addJavaScriptHandler(
        handlerName: "closePage", callback: _onClosePage);
    _webViewController?.addJavaScriptHandler(
        handlerName: "openUrl", callback: _onOpenUrl);
    _webViewController?.addJavaScriptHandler(
        handlerName: "selectPhoto", callback: _onSelectPhoto);
    _webViewController?.addJavaScriptHandler(
        handlerName: "viewPhoto", callback: _onViewPhoto);
  }

  ///关闭页面
  void _onClosePage(List<dynamic> args) {
    Navigator.pop(context);
  }

  ///打开连接
  void _onOpenUrl(List<dynamic> args) {
    if (args.isEmpty) {
      return;
    }
    String url = args[0];
    bool isBlank = false;
    if (args.length > 1) {
      isBlank = args[0] == 1;
    }
    logd("H5打开新URL,url=$url,isBlank=$isBlank");
    if (isBlank) {
      _webViewController?.loadUrl(urlRequest: URLRequest(url: WebUri(url)));
    } else {
      context.pushRoute(OnlineConsultationRoute(url: url, backAlert: true));
    }
  }

  ///选择照片
  Future<List<String>> _onSelectPhoto(List<dynamic> args) async {
    int maxCount = 0;
    if (args.isNotEmpty) {
      maxCount = args[0];
    }
    logd("H5选择照片,最大数量=$maxCount");
    List<HistoryItemInfo>? list =
        await context.pushRoute<List<HistoryItemInfo>>(SelectHistoryRoute(
            selectType: SelectHistoryType.photo,
            isFillterPatient: false,
            isMultiSelect: maxCount > 0,
            maxCount: maxCount));
    if (list == null) {
      logd("没有选择照片");
      return [];
    }
    //把图片转成base64编码,直接给文件路径H5没法使用
    List<String> datas = [];
    Stream<HistoryItemInfo> stream = Stream.fromIterable(list);
    await for (HistoryItemInfo info in stream) {
      try {
        File file = File(info.fileUri!.toFilePath());
        Uint8List data = await file.readAsBytes();
        String base64 = base64Encode(data);
        datas.add(base64);
      } catch (e) {
        loge("H5选择图片,转为base64异常", error: e);
      }
    }
    return datas;
  }

  ///查看图片
  void _onViewPhoto(List<dynamic> args) async {
    if (args.isEmpty) {
      return;
    }
    context.pushRoute(OnlinePictureViewRoute(url: args[0]));
  }
}