import 'dart:async';
import 'dart:convert';
import 'dart:io';
import 'dart:typed_data';
import 'dart:ui';
import 'dart:ui' as ui;

import 'package:cached_network_image/cached_network_image.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/services.dart';
import 'package:flutter_swiper/flutter_swiper.dart';
import 'package:fluttertoast/fluttertoast.dart';
import 'package:more_picture_share/more_picture_share.dart';
import 'package:path_provider/path_provider.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:share_extend/share_extend.dart';
import 'package:sharesdk_plugin/sharesdk_plugin.dart';
import 'package:zhiying_base_widget/dialog/loading/loading.dart';
import 'package:zhiying_base_widget/utils/image_download_util/image_download_util.dart';
import 'package:zhiying_base_widget/widgets/share/models/share_alert_model.dart';
import 'package:zhiying_base_widget/widgets/share/models/share_data_model.dart';
import 'package:zhiying_base_widget/widgets/share/models/share_icon_model.dart';
import 'package:zhiying_base_widget/widgets/share/share_alert_content.dart';
import 'package:zhiying_comm/zhiying_comm.dart';
import 'package:zhiying_base_widget/widgets/share/models/share_select_pic_model.dart';
import 'package:zhiying_base_widget/template/goods_share_template/goods_share_template.dart';

class ShareAlertSelect extends StatefulWidget {
  final String skipIdentifier;
  final bool isContentShow;
  final ShareDataModel model;
  final bool isPicShow;
  final ShareSelectPicModel selectPicModel;

  const ShareAlertSelect(this.model, this.skipIdentifier,
      {Key key, this.isContentShow = false, this.selectPicModel, this.isPicShow})
      : super(key: key); // 中间视图

  @override
  _ShareAlertSelectState createState() => _ShareAlertSelectState();
}

class _ShareAlertSelectState extends State<ShareAlertSelect> {
  ShareAlertModel _iconModel;
  bool isPicShow;
  ShareSelectPicModel selectPicModel;
  GlobalKey _globalKey = GlobalKey();

  @override
  void initState() {
    NetUtil.request('/api/v1/mod/${widget.skipIdentifier}', method: NetMethod.GET,
        onCache: (data) {
      // try{
      //   _parseData(data);
      // }catch(e){
      //   print(e);
      // }
    }, onSuccess: (data) {
      print(data);
      _parseData(data);
    }, onError: (err) {});

    if (!EmptyUtil.isEmpty(widget.isPicShow)) {
      isPicShow = widget.isPicShow;
    } else {
      isPicShow = false;
    }
    selectPicModel = widget.selectPicModel;
    super.initState();
  }

  void _parseData(Map<String, dynamic> data) {
    List modList = data['mod_list'];
    Map d = modList.first;
    if (d != null) {
      String dString = d['data'];
      _iconModel =
          ShareAlertModel.fromJson(Map<String, dynamic>.from(jsonDecode(dString)));

      setState(() {});
    }
  }

  _selectPic(List<SharePicItem> picList, int position) async {
    ShareDataModel model = ShareDataModel();
    model.image = [];
    for (int i = 0; i < picList.length; i++) {
      if (picList[i].select) {
        if (i == 0) {
          ShareDataModel shareDataModel = await _updateModel(_globalKey);
          model.poster = shareDataModel.poster;
        } else {
          model.image.add(picList[i].pic);
        }
      }
    }
    EventUtil.instance.fire(model);
  }

  ///截图保存
  Future<ShareDataModel> _updateModel(GlobalKey _globalKey) async {
    ShareDataModel _shareModel = ShareDataModel();
    BuildContext buildContext = _globalKey.currentContext;
    if (null != buildContext) {
      RenderRepaintBoundary boundary = buildContext.findRenderObject();
      ///pixelRatio是放大倍数
      ui.Image image = await boundary.toImage(pixelRatio: 1);
      // 注意：png是压缩后格式，如果需要图片的原始像素数据，请使用rawRgba
      ByteData byteData = await image.toByteData(format: ui.ImageByteFormat.png);
      Uint8List pngBytes = byteData.buffer.asUint8List();
      _shareModel.poster = pngBytes;
    } else {
      _shareModel.poster = null;
    }
    // _shareModel.content = _isContentSelected ? _content : '';
    return _shareModel;
  }

  @override
  Widget build(BuildContext context) {
    return WillPopScope(
      onWillPop: () async {
        Loading.dismiss();
        Navigator.canPop(context);
        return true;
      },
      child: GestureDetector(
        child: Scaffold(
          backgroundColor: Colors.transparent,
          body: BackdropFilter(
            filter: ImageFilter.blur(sigmaX: 5, sigmaY: 5), //背景
            child: Container(
              child: Column(
                children: <Widget>[
                  widget.isContentShow
                      ? Expanded(
                          child: Center(child: ShareAlertContent(_iconModel)),
                        )
                      : Container(),
                  isPicShow
                      ? Expanded(
                          child: Swiper(
                            loop: false,
                            itemBuilder: (BuildContext context, int index) {
                              Widget picWidget;
                              if (index == 0) {
                                picWidget = Column(
                                  children: [
                                    Expanded(
                                      child: Transform.scale(
                                        alignment: Alignment.center,
                                        scale: 0.75,
                                        child: GoodsShareTemplate(
                                          selectPicModel.posterModel,
                                          contentKey: _globalKey,
                                        ),
                                      ),
                                    ),
                                  ],
                                );
                              } else {
                                picWidget = CachedNetworkImage(
                                  imageUrl: selectPicModel.picList[index].pic,
                                  fit: BoxFit.fitWidth,
                                );
                              }
                              return Container(
                                alignment: Alignment.bottomCenter,
                                margin: EdgeInsets.only(top: 50, bottom: 10),
                                child: Stack(
                                  children: <Widget>[
                                    picWidget,
                                    // CachedNetworkImage(
                                    //   imageUrl: selectPicModel.picList[index].pic,
                                    //   fit: BoxFit.fitWidth,
                                    // ),
                                    Positioned(
                                      bottom: 10,
                                      right: 15,
                                      child: GestureDetector(
                                        onTap: () {
                                          selectPicModel.picList[index].select =
                                              !selectPicModel.picList[index].select;
                                          setState(() {});
                                          _selectPic(selectPicModel.picList, index);
                                        },
                                        child: Container(
                                          alignment: Alignment.center,
                                          decoration: BoxDecoration(
                                            borderRadius: BorderRadius.circular(50),
                                            color: selectPicModel.picList[index].select
                                                ? Colors.red
                                                : Colors.grey,
                                          ),
                                          child: Icon(
                                            CupertinoIcons.check_mark,
                                            color: Colors.white,
                                          ),
                                        ),
                                      ),
                                    )
                                  ],
                                ),
                              );
                            },
                            itemCount: selectPicModel.picList.length,
                            viewportFraction: 0.8,
                            scale: 0.8,
                          ),
                        )
                      : Container(),
                  _ShareAlertContent(
                      widget.model, widget.skipIdentifier, _iconModel, isPicShow),
                ],
              ),
            ), // 模糊化
          ),
        ),
        onTap: () {
          // Navigator.of(context).pop();
        },
      ),
    );
  }
}

class _ShareAlertContent extends StatefulWidget {
  final ShareDataModel model;
  final String skipIdentifier;
  final ShareAlertModel iconModel;
  final bool isSelectPic;

  const _ShareAlertContent(
      this.model, this.skipIdentifier, this.iconModel, this.isSelectPic,
      {Key key})
      : super(key: key);

  @override
  _ShareAlertContentState createState() => _ShareAlertContentState();
}

class _ShareAlertContentState extends State<_ShareAlertContent> {
  StreamSubscription listen;
  bool isSelectPic;

  ShareDataModel _shareDataModel;

  @override
  void dispose() {
    // TODO: implement dispose
    listen?.cancel();
    super.dispose();
  }

  @override
  void initState() {
    // TODO: implement initState
    isSelectPic = widget.isSelectPic;

    if (isSelectPic) {
      _shareDataModel = null;
    } else {
      _shareDataModel = widget?.model;
    }
    listen = EventUtil.instance.on<ShareDataModel>().listen((ShareDataModel event) {
      if (isSelectPic) {
        _shareDataModel = event;
      }
    });

    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return GestureDetector(
      onTap: () {},
      child: Container(
        width: double.infinity,
        decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.only(
            topLeft: Radius.circular(12),
            topRight: Radius.circular(12),
          ),
        ),
        child: SafeArea(
          top: false,
          child: Column(
            children: <Widget>[
              Container(
                margin: EdgeInsets.only(top: 8, bottom: 8),
                width: 62,
                height: 4,
                decoration: BoxDecoration(
                    color: Color(0xffd8d8d8), borderRadius: BorderRadius.circular(2)),
              ),
              Text(
                '分享至',
                style: TextStyle(
                    fontSize: 15, color: Color(0xff333333), fontWeight: FontWeight.bold),
              ),
              Container(
                margin: EdgeInsets.only(left: 12, right: 12, top: 10, bottom: 10),
                child: _createIcons(),
              ),
              GestureDetector(
                child: Container(
                  margin: EdgeInsets.only(left: 12, right: 12, bottom: 10),
                  padding: EdgeInsets.all(12),
                  decoration: BoxDecoration(
                      color: Color(0xfff3f3f3), borderRadius: BorderRadius.circular(8)),
                  child: Center(
                    child: Text(
                      '取消',
                      style: TextStyle(
                          fontSize: 12,
                          fontWeight: FontWeight.bold,
                          color: Color(0xff999999)),
                    ),
                  ),
                ),
                onTap: () {
                  Navigator.of(context).pop();
                },
              )
            ],
          ),
        ),
      ),
    );
  }

  Widget _createIcons() {
    return Wrap(
      spacing: 10,
      runSpacing: 10,
      children: widget.iconModel?.icons?.map((item) {
            return _createIcon(item);
          })?.toList() ??
          [],
    );
  }

  Widget _createIcon(ShareIconModel item) {
    return GestureDetector(
      child: Container(
        width: 60,
        child: Column(
          children: <Widget>[
            Container(
              width: 40,
              height: 40,
              child: CachedNetworkImage(
                imageUrl: item.icon,
                fit: BoxFit.contain,
              ),
            ),
            Padding(
              padding: const EdgeInsets.only(top: 2, bottom: 2),
              child: Text(
                item.name,
                style: TextStyle(
                    fontSize: 12, color: Color(0xff333333), fontWeight: FontWeight.bold),
              ),
            ),
          ],
        ),
      ),
      onTap: () async {
        //检查是否有存储权限
        var status = await Permission.storage.status;
        if (!status.isGranted) {
          status = await Permission.storage.request();
          print(status);
          return;
        }

        int count = 0;
        if (_shareDataModel.poster != null) {
          count++;
        }
        count += (_shareDataModel?.image?.length ?? 0);
        // 多图分享
        if (count > 1) {
          _shareMultipleImages(item.type);
          return;
        }


        if (item.type == 'wx') {
          _shareByMob(ShareSDKPlatforms.wechatSession);
        } else if (item.type == 'pyq') {
          _shareByMob(ShareSDKPlatforms.wechatTimeline);
        } else if (item.type == 'qq') {
          _shareByMob(ShareSDKPlatforms.qq);
        } else if (item.type == 'qq_space') {
          _shareByMob(ShareSDKPlatforms.qZone);
        } else if (item.type == 'weibo') {
          _shareByMob(ShareSDKPlatforms.sina);
        } else if (item.type == 'more_setting') {
          _shareBySystem(item.type);
        }
      },
    );
  }

  // mob分享，只能单图分享，多图分享调用系统分享
  void _shareByMob(ShareSDKPlatform plateform) async {
    if (isSelectPic &&
        EmptyUtil.isEmpty(_shareDataModel) &&
        EmptyUtil.isEmpty(_shareDataModel?.poster) &&
        EmptyUtil.isEmpty(_shareDataModel?.image)) {
      Fluttertoast.showToast(msg: '请选择分享图片');
      return;
    }


    Loading.show(context);
    Timer(Duration(milliseconds: 2000), () {
      Loading.dismiss();
    });



    SSDKMap params;
    if (_shareDataModel.poster != null) {
      String path = await _savePoster();
      if (path != null && path != '') {
        params = SSDKMap()
          ..setGeneral(
            _shareDataModel?.title ?? '',
            _shareDataModel?.content ?? '',
            Platform.isIOS ? path : null,
            null,
            Platform.isAndroid ? path : null,
            null,
            null,
            null,
            null,
            null,
            SSDKContentTypes.image,
          );
      }
    } else {
      var type = SSDKContentTypes.auto;

      if (_shareDataModel?.image?.first != null && _shareDataModel?.url != null) {
        type = SSDKContentTypes.webpage;
      } else if (_shareDataModel?.image?.first != null) {
        type = SSDKContentTypes.image;
      } else if (_shareDataModel?.title != null || _shareDataModel?.content != null) {
        type = SSDKContentTypes.text;
      }
      if (plateform == ShareSDKPlatforms.qZone && type == SSDKContentTypes.text) {
        _shareDataModel?.title = null;
        type = SSDKContentTypes.message;
      }

      params = SSDKMap()
        ..setGeneral(
          _shareDataModel?.title ?? '',
          _shareDataModel?.content ?? '',
          Platform.isIOS ? _shareDataModel.image : null,
          Platform.isAndroid ? _shareDataModel?.image?.first : null,
          null,
          _shareDataModel.url,
          null,
          null,
          null,
          null,
          type,
        );
    }
    SharesdkPlugin.share(plateform, params, (SSDKResponseState state, Map userdata, Map contentEntity, SSDKError error) {
      print(error);
      if (state == SSDKResponseState.Fail) {
        Fluttertoast.showToast(msg: '分享失败');
      } else if (state == SSDKResponseState.Success) {
        //Fluttertoast.showToast(msg: '分享成功');
      } else if (state == SSDKResponseState.Cancel) {
        Fluttertoast.showToast(msg: '取消分享');
      }
      Logger.debug('${state}, ${error.rawData}');
      Loading.dismiss();
    });
  }

  // 系统分享，只能分享图片或者文字，不能组合分享
  void _shareBySystem(String type) async {
    if (isSelectPic &&
        EmptyUtil.isEmpty(_shareDataModel) &&
        EmptyUtil.isEmpty(_shareDataModel?.poster) &&
        EmptyUtil.isEmpty(_shareDataModel?.image)) {
      Fluttertoast.showToast(msg: '请选择分享图片');
      return;
    }

    int count = 0;
    if (_shareDataModel.poster != null) {
      count++;
    }
    count += (_shareDataModel?.image?.length ?? 0);
    // 多图分享
    if (count > 1) {
      _shareMultipleImages(type);
      return;
    }

    if (_shareDataModel.poster != null) {
      String path = await _savePoster();
      if (path != null && path != '') {
        ShareExtend.share(path, 'image');
      }
    } else {
      ShareExtend.share(_shareDataModel.content, 'text');
    }

  }

  Future<String> _savePoster() async {
    String path;
    if (_shareDataModel.poster != null) {
      // 检查并请求权限
      var status = await Permission.storage.status;
      if (status != PermissionStatus.granted) {
        status = await Permission.storage.request();
      }
      if (status == PermissionStatus.denied) {
        Fluttertoast.showToast(msg: '暂无权限，分享失败');
        return null;
      }

      try {
        // 保存到本地路径
        final tempDir = await getTemporaryDirectory();
        final file = await File('${tempDir.path}/image.jpg').create();
        file.writeAsBytesSync(_shareDataModel.poster);

        path = file.path;
        Logger.debug(file.path);
      } catch (err, s) {
        Logger.error(err.toString(), s.toString());
        Fluttertoast.showToast(msg: '分享失败');
        return null;
      }
    }
    return path;
  }

  // 多图分享，调用系统分享
  void _shareMultipleImages(String type) async {
    List<String> paths = List();
    String path = await _savePoster();
    if (path != null && path != '') {
      paths.add(path);
    }
    Loading.show(context);
    List<String> downPaths = await ImageDownloadUtil.download(_shareDataModel.image);
    paths.addAll(downPaths);
    if (Platform.isAndroid && type == 'wx') {
      MorePictureShare.shareWeixinPics(paths);
    } else if (Platform.isAndroid && type == 'pyq') {
      MorePictureShare.shareWeixinPicsCirlc(paths);
    } else {
      ShareExtend.shareMultiple(paths, "image", subject: "");
    }
    Loading.dismiss();
  }
}