flutter-sport/lib/pages/game/rank_detail.dart

import 'dart:convert';

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:sport/bean/rank_game_info.dart';
import 'package:sport/bean/user.dart';
import 'package:sport/provider/user_model.dart';
import 'package:sport/router/navigator_util.dart';
import 'package:sport/router/routes.dart';
import 'package:sport/services/api/inject_api.dart';
import 'package:sport/widgets/area.dart';
import 'package:sport/widgets/decoration.dart';
import 'package:sport/widgets/image.dart';
import 'package:sport/widgets/loading.dart';
import 'package:sport/widgets/space.dart';

class RankDetailPage extends StatefulWidget {
  final String id;
  final String type;

  RankDetailPage(this.id, this.type);

  @override
  State<StatefulWidget> createState() {
    return _RankDetailPageState();
  }
}

class _RankDetailPageState extends State<RankDetailPage> with InjectApi {
  bool _isLoading;
  RankGameInfoData _data;
  String _id;

  String _rank;

  @override
  void initState() {
    super.initState();
    // 简单的缓存...
    if (_data == null || _id != widget.id) {
      _isLoading = true;
      initData();
      _id = widget.id;
    } else {
      _isLoading = false;
    }
  }

  // 缓存数据...
  initData() async {
    if (widget.type == "1") {
      api.getRankGameInfo(widget.id).then((data) {
        setState(() {
          _data = data.data;
          _isLoading = false;
        });
      });
    } else {
      api.getRankSportInfo(widget.id).then((data) {
        setState(() {
          _data = data.data;
          _isLoading = false;
        });
      });
    }
  }

  area(bool all, bool province, int provinceId, int cityId) {
    setState(() {
      _isLoading = true;
    });
    if (widget.type == "1") {
      api.getRankGameInfo(widget.id, provinceId: all ? null : provinceId, cityId: all ? null : province ? null : cityId).then((data) {
        setState(() {
          _data = data.data;
          _isLoading = false;
        });
      });
    } else {
      api.getRankSportInfo(widget.id, provinceId: all ? null : provinceId, cityId: all ? null : province ? null : cityId).then((data) {
        setState(() {
          _data = data.data;
          _isLoading = false;
        });
      });
    }
  }

  initUser(int rank) {
    return User(position: rank, userName: '虚位以待', score: 0, id: 0);
  }

  Widget _buildRankWidget() {
    dynamic user1 = initUser(1), user2 = initUser(2), user3 = initUser(3), user4;
    if (_data != null && _data.records != null) {
      for (var i = 0; i < _data.records.length; i++) {
        var item = _data.records[i];
        if (i == 0) {
          user1 = item;
        } else if (i == 1) {
          user2 = item;
        } else if (i == 2) {
          user3 = item;
        }
      }
    }

    return Column(
      children: <Widget>[
        Center(
          child: Row(
            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
            crossAxisAlignment: CrossAxisAlignment.end,
            children: <Widget>[
              Container(width: 94, child: user2 != null ? _buildRankHeaderWidget(user2) : _buildRankHeaderWidget(initUser(2))),
              Container(width: 120, child: user1 != null ? _buildRankHeaderWidget(user1) : _buildRankHeaderWidget(initUser(1))),
              Container(width: 94, child: user3 != null ? _buildRankHeaderWidget(user3) : _buildRankHeaderWidget(initUser(3))),
            ],
          ),
        ),
        Space(
          height: 10,
        ),
        Divider(
          height: 1,
          indent: 12,
          endIndent: 12,
        )
      ],
    );
  }

  Widget _buildRankHeaderWidget(User user) {
    int rank = user.position;
    return InkWell(
      child: Column(
        children: <Widget>[
          rank == 1
              ? Stack(
                  alignment: Alignment.center,
                  children: <Widget>[
                    CircleAvatar(backgroundImage: userAvatarProvider(user.userAvatar == null ? "" : user.userAvatar), radius: 46.0),
                    Image.asset(
                      "lib/assets/img/rank_image_no$rank.png",
                    )
                  ],
                )
              : Stack(
                  alignment: Alignment.topCenter,
                  children: <Widget>[
                    Positioned(top: 3, child: CircleAvatar(backgroundImage: userAvatarProvider(user.userAvatar == null ? "" : user.userAvatar), radius: 35.0)),
                    Image.asset(
                      "lib/assets/img/rank_image_no$rank.png",
                    )
                  ],
                ),
          Space(
            height: 6,
          ),
          Text(
            "${user.userName}",
            style: Theme.of(context).textTheme.subtitle1,
            maxLines: 1,
          ),
          Space(
            height: 4,
          ),
          _dataText(_data.rank, user)
        ],
      ),
      onTap: () {
        if (user.id != 0) NavigatorUtil.goRankPeopleDetails(context, details: user);
      },
    );
  }

  Widget _buildRankItemWidget(int number, User data) {
    return Column(
      children: <Widget>[
        InkWell(
          onTap: () {
            if (data is User) {
              if (data.id != 0) NavigatorUtil.goRankPeopleDetails(context, details: data);
            }
          },
          child: Container(
            padding: EdgeInsets.symmetric(horizontal: 12.0, vertical: 6.0),
            child: Row(
              children: <Widget>[
                Container(
                  width: 20,
                  child: Text(
                    "$number",
                    style: Theme.of(context).textTheme.bodyText2,
                  ),
                ),
                Padding(
                  padding: const EdgeInsets.fromLTRB(0, 6, 10.0, 6),
                  child: CircleAvatar(backgroundColor:Colors.transparent, backgroundImage: userAvatarProvider(data.userAvatar == null ? "" : data.userAvatar), radius: 22),
                ),
                Expanded(
                  child: Text(
                    data.userName,
                    style: Theme.of(context).textTheme.subtitle1,
                    maxLines: 1,
                  ),
                ),
                _dataText(_data.rank, data),
              ],
            ),
          ),
        ),
        Divider(
          height: 1,
          indent: 12,
          endIndent: 12,
        ),
      ],
    );
  }

  List<Widget> getRankItems() {
    List<Widget> rankItems = [];
    if (_data != null && _data.records != null) {
      for (var i = 3; i < _data.records.length; i++) {
        var item = _data.records[i];
        rankItems.add(_buildRankItemWidget(i + 1, item));
      }
    }
    if (rankItems.length < 7) {
      int start = rankItems.length;
      for (var i = start; i < 7; i++) {
        var item = initUser(i + 4);
        rankItems.add(_buildRankItemWidget(i + 4, item));
      }
    }
    return rankItems;
  }

  Widget getUserRank() {
    return Positioned(
      bottom: -36.0,
      left: 12.0,
      right: 12.0,
      child: Container(
        width: MediaQuery.of(context).size.width * 0.95,
        height: 72.0,
        decoration: card(),
        child: Padding(
          padding: EdgeInsets.symmetric(horizontal: 12.0),
          child: Row(
            children: <Widget>[
              _data.user != null
                  ? Container(
                      padding: EdgeInsets.only(right: 8),
                      child: Text(
                        "${_data.user.position}",
                        style: Theme.of(context).textTheme.bodyText2,
                      ),
                    )
                  : Container(),
              _data.user != null
                  ? _data.user.up != 0 && _data.user.upNew != 0
                      ? Padding(
                          padding: EdgeInsets.only(right: 8),
                          child: Image.asset("lib/assets/img/rand_icon_${_data.user.up >= 0 ? 'top' : 'down'}.png"),
                        )
                      : Container()
                  : Container(),
              Expanded(
                child: Container(
                  child: Consumer<UserModel>(
                    builder: (_, model, __) {
                      return Row(
                        mainAxisSize: MainAxisSize.max,
                        children: <Widget>[
                          CircleAvatar(backgroundImage: userAvatarProvider(model?.user?.avatar != null ? model.user.avatar : ""), radius: 22),
                          SizedBox(
                            width: 10,
                          ),
                          Expanded(
                            child: Text(
                              model.user.name,
                              overflow: TextOverflow.ellipsis,
                              style: Theme.of(context).textTheme.subtitle1,
                            ),
                          ),
                          SizedBox(
                            width: 10,
                          ),
                        ],
                      );
                    },
                  ),
                ),
              ),
              _data.user == null ? Text("暂无记录", style: Theme.of(context).textTheme.bodyText1,) : _data.rank.userCountMax < _data.user.position ? Text("暂未上榜", style: Theme.of(context).textTheme.bodyText1,) : _dataText(_data.rank, _data.user),
              Container(
                width: 12.0,
                height: 14.0,
                margin: EdgeInsets.only(left: 18.0),
                child: Image.asset(
                  "lib/assets/img/rank_icon_location.png",
                  fit: BoxFit.cover,
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }

  Widget _dataText(Rank rank, User user) {
    var unit = _dataUnit(rank);
    if (rank != null) {
      if (rank.field == null || rank.field == "") {
        return Text(user.score == null || user.score == 0 ? "" : "${user.score.toStringAsFixed(1)}$unit",
            style: TextStyle(color: Color.fromRGBO(255, 196, 0, 1)));
      } else {
        if (rank.field == 'consume') {
          return Text(user.consume == null ? "" : "${user.consume.round()}$unit", style: TextStyle(color: Color.fromRGBO(255, 196, 0, 1)));
        } else if (rank.field == 'duration') {
          return Text(user.duration == null ? "" : "${user.duration}$unit", style: TextStyle(color: Color.fromRGBO(255, 196, 0, 1)));
        }
      }
    }
    return Container();
  }

  String _dataUnit(Rank rank) {
    if (rank != null) {
      if (rank.field == null || rank.field == "") {
        return "分";
      } else {
        if (rank.field == 'consume') {
          return "kal";
        } else if (rank.field == 'duration') {
          return "分钟";
        }
      }
    }
    return "";
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        backgroundColor: Colors.white,
        body: SingleChildScrollView(
          child: Column(
            children: <Widget>[
              //header
              Stack(
                overflow: Overflow.visible,
                children: <Widget>[
                  Container(
                      width: MediaQuery.of(context).size.width,
                      height: MediaQuery.of(context).size.width * 611 / 1125,
                      decoration: BoxDecoration(image: DecorationImage(image: AssetImage("lib/assets/img/rank_bg.png"), fit: BoxFit.fill)),
                      child: SafeArea(
                        child: Align(
                          alignment: Alignment.centerLeft,
                          child: Padding(
                            padding: const EdgeInsets.symmetric(horizontal: 12),
                            child: _data?.rank == null
                                ? Container()
                                : Column(
                                    crossAxisAlignment: CrossAxisAlignment.start,
                                    mainAxisSize: MainAxisSize.min,
                                    children: <Widget>[
                                      Padding(
                                        padding: EdgeInsets.symmetric(vertical: 6.0),
                                        child: Text(
                                          "${_data.rank.name}",
                                          style: TextStyle(color: Colors.white, fontSize: 20, fontWeight: FontWeight.w600),
                                        ),
                                      ),
                                      Padding(
                                        padding: EdgeInsets.symmetric(vertical: 2.0),
                                        child: Text(
                                          "${_data.rank.introduce}",
                                          style: Theme.of(context).textTheme.bodyText1,
                                        ),
                                      ),
                                      Padding(
                                        padding: EdgeInsets.symmetric(vertical: 2.0),
                                        child: Text(
                                          "${_data.rank.rateBegin} ~ ${_data.rank.rateEnd}",
                                          style: Theme.of(context).textTheme.bodyText1,
                                        ),
                                      ),
                                      SizedBox(
                                        height: 10,
                                      )
                                    ],
                                  ),
                          ),
                        ),
                      )),
                  if (_data != null) getUserRank(),
                  Positioned(
                      left: 0.0,
                      top: 0.0,
                      child: SafeArea(
                        child: IconButton(
                          icon: Image.asset("lib/assets/img/topbar_return_white.png"),
                          onPressed: () {
                            Navigator.pop(context);
                          },
                        ),
                      )),
                  Positioned(
                      top: 0,
                      right: 0,
                      child: SafeArea(
                        child: IconButton(
                          icon: Image.asset("lib/assets/img/topbar_problom.png"),
                          onPressed: () {
                            if(_data == null)
                              return;

                            NavigatorUtil.go(context, "${Routes.rankIntroduce}?data=${Uri.encodeComponent(json.encode(_data))}");
                          },
                        ),
                      ))
                ],
              ),
              if (!_isLoading)
                Padding(
                  padding: const EdgeInsets.only(top: 50.0),
                  child: Row(
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    children: <Widget>[
                      Consumer<UserModel>(
                        builder: (_, model, __) => model.user.city == null || _rank == "全国榜" || _rank == null
                            ? Container()
                            : Container(
                                padding: EdgeInsets.symmetric(horizontal: 12.0),
                                child: Row(
                                  children: <Widget>[
                                    Image.asset("lib/assets/img/rank_icon_position.png"),
                                    SizedBox(
                                      width: 6,
                                    ),
                                    Text(
                                      "${_rank == '全省榜' ? model.user?.province : model.user?.city}",
                                      style: Theme.of(context).textTheme.bodyText2,
                                    )
                                  ],
                                ),
                              ),
                      ),
                      NotificationListener<AreaNotification>(
                        onNotification: (n) {
                          _rank = n.rank;
                          area(n.all, n.province, n.provinceId, n.cityId);
                          return true;
                        },
                        child: AreaPage(
                          area: _rank,
                        ),
                      )
                    ],
                  ),
                ),
              if (_isLoading)
                Container(child: RequestLoadingWidget()),
              if (!_isLoading)
                Padding(
                  padding: EdgeInsets.only(top: 12.0),
                  child: _buildRankWidget(),
                ),
              if (!_isLoading)
                Column(
                  children: getRankItems(),
                )
            ],
          ),
        ));
  }
}