flutter-sport/lib/pages/social/user_friend_page.dart

import 'package:azlistview/azlistview.dart';
import 'package:cached_network_image/cached_network_image.dart';
import 'package:extended_nested_scroll_view/extended_nested_scroll_view.dart' as extended;
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart' hide NestedScrollView;
import 'package:flutter_easyrefresh/easy_refresh.dart';
import 'package:sport/bean/login.dart';
import 'package:sport/bean/post_user.dart';
import 'package:sport/bean/user_friend.dart';
import 'package:sport/bean/user_info.dart';
import 'package:sport/pages/social/chat_page.dart';
import 'package:sport/pages/social/user_detail_page.dart';
import 'package:sport/pages/social/user_friend_add_page.dart';
import 'package:sport/provider/lib/provider_widget.dart';
import 'package:sport/provider/lib/view_state_lifecycle.dart';
import 'package:sport/provider/user_friend_model.dart';
import 'package:sport/router/navigator_util.dart';
import 'package:sport/utils/DateFormat.dart';
import 'package:sport/utils/toast.dart';
import 'package:sport/widgets/appbar.dart';
import 'package:sport/widgets/dialog/alert_dialog.dart';
import 'package:sport/widgets/dialog/request_dialog.dart';
import 'package:sport/widgets/error.dart';
import 'package:sport/widgets/image.dart';
import 'package:sport/widgets/loading.dart';
import 'package:sport/widgets/misc.dart';
import 'package:sport/widgets/persistent_header.dart';
import 'package:sport/widgets/space.dart';

class UserFriendPage extends StatefulWidget {
  @override
  State<StatefulWidget> createState() => _PageState();
}

class _PageState extends State<UserFriendPage> {
  PageController _controller;
  bool _refresh = false;
  int _page = 0;

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

  @override
  void dispose() {
    super.dispose();
    _controller?.dispose();
  }

  @override
  Widget build(BuildContext context) {
    final double tabHeader = 60;
    final double statusBarHeight = MediaQuery.of(context).padding.top;
    final double pinnedHeaderHeight =
        //statusBar height
        statusBarHeight +
            //pinned SliverAppBar height in header
            kToolbarHeight +
            tabHeader;
    return DefaultTabController(
      length: 3,
      child: Scaffold(
        backgroundColor: Colors.white,
        body: extended.NestedScrollView(
          pinnedHeaderSliverHeightBuilder: () {
            return pinnedHeaderHeight;
          },
          innerScrollPositionKeyBuilder: () {
            TabController tabController = DefaultTabController.of(context);
            String index = 'Tab${tabController.index}';
            return Key(index);
          },
          headerSliverBuilder: (context, innerBoxIsScrolled) {
            return <Widget>[
              buildSliverAppBar(context, "好友列表",
                  innerBoxIsScrolled: innerBoxIsScrolled,
                  actions: <Widget>[
                    IconButton(
                      icon: Image.asset(
                        "lib/assets/img/bbs_icon_addmore.png",
                        width: 22.0,
                        height: 22.0,
                      ),
//                  icon: Text(
//                    "添加",
//                    style: TextStyle(fontSize: 15, color: Theme.of(context).accentColor),
//                  ),
                      onPressed: () async {
                        await NavigatorUtil.goPage(
                            context, (context) => UserFriendAddPage());
                        setState(() {
                          _refresh = true;
                        });
                        await Future.delayed(Duration(seconds: 1));
                        setState(() {
                          _refresh = false;
                        });
                      },
                    )
                  ]),
              SliverPersistentHeader(
                delegate: PersistentHeader(
                    min: tabHeader,
                    max: tabHeader,
                    child: Container(
                      color: Colors.white,
                      child: Column(
                        children: <Widget>[
                          Expanded(
                            child: Center(
                              child: Container(
                                height: 35,
                                child: TabBar(
                                  isScrollable: true,
                                  labelPadding:
                                      EdgeInsets.symmetric(horizontal: 32),
                                  indicatorWeight: 3,
                                  indicatorPadding:
                                      EdgeInsets.symmetric(horizontal: 6),
                                  tabs: <Widget>[
                                    Tab(text: '好友'),
                                    Tab(text: '我关注'),
                                    Tab(text: '关注我')
                                  ],
                                  onTap: (index) {
                                    _controller?.jumpToPage(index);
                                  },
                                ),
                              ),
                            ),
                          ),
                        ],
                      ),
                    )),
                pinned: true,
              ),
            ];
          },
          body: _refresh
              ? RequestLoadingWidget()
              : PageView.builder(
                  controller: _controller = PageController(initialPage: _page)
                    ..addListener(() {
                      _page = _controller.page.toInt();
                    }),
                  physics: NeverScrollableScrollPhysics(),
                  itemCount: 3,
                  itemBuilder: (_, index) => _PageDetailPage(index)),
        ),
      ),
    );
  }
}

class _PageDetailPage extends StatefulWidget {
  final int type;

  _PageDetailPage(this.type);

  @override
  State<StatefulWidget> createState() => _PageDetailState(type);
}

class _PageDetailState
    extends ViewStateLifecycle<_PageDetailPage, UserFriendModel>
    with ChangeNotifier {
  TextEditingController _controller;
  FocusNode _focusNode;
  ValueNotifier<String> _searchValue = ValueNotifier<String>("");
  bool isSeach = false;
  _PageDetailState(int type);
  @override
  void initState() {
    super.initState();
    _focusNode = FocusNode();
    _controller = new TextEditingController(text: '');
    // 监听 ...
    _controller.addListener(() {
      if (_controller.value.text != "") {
        if (widget.type == 0) {
          model.items = model.originItems
              .where(
                  (element) => element.user.name.indexOf(_controller.text) > -1)
              .toList();
          setState(() {
            isSeach = true;
          });
        } else {
          model.list = model.originList
              .where((element) => element.name.indexOf(_controller.text) > -1)
              .toList();
        }
        notifyListeners();
      } else {
        if (widget.type == 0) {
          setState(() {
            isSeach = false;
          });
        }
        model.items = model.originItems;
        model.list = model.originList;
        notifyListeners();
      }
    });
  }

  @override
  void dispose() {
    super.dispose();
    _focusNode?.dispose();
    _controller?.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return ProviderWidget<UserFriendModel>(
        model: model,
        onModelReady: (model) => model.initData(),
        builder: (_, model, __) {
          return widget.type == 0
              ? Column(
                  children: <Widget>[
                    _searchWidget(context),
                    if (!isSeach)
                      Space(
                        height: 16.0,
                      ),
                    isSeach
                        ? model.items.length > 0
                            ? Expanded(
                                child:
                                ListView.builder(
                                  padding: EdgeInsets.zero,
                                  itemBuilder: (context, index) => Column(
                                    children: <Widget>[
                                      ListTile(
                                        leading: InkWell(
                                          child: CircleAvatar(
                                            backgroundImage: userAvatarProvider(model.items[index].user.avatar),
                                            radius: 22,
                                          ),
                                          onTap: () {
                                            NavigatorUtil.goPage(
                                                context,
                                                    (context) => UserDetailPage(
                                                    PostUser.fromJson({
                                                      "id":
                                                      "${model.items[index].user.uid}"
                                                    })));
                                          },
                                        ),
                                        title:
                                        Text("${model.items[index].user.name}"),
                                        onTap: () {
                                          NavigatorUtil.goPage(
                                              context,
                                                  (context) => ChatPage(
                                                  UserInfo.fromJson(model
                                                      .items[index].user
                                                      .toJson())));
                                        },
                                      ),
                                      Divider()
                                    ],
                                  ),
                                  itemCount: model.items.length,
                                ),
                              )
                            : _searchNothings()
                        : Expanded(
                            child: AzListView(
                              data: model.items,
                              susItemHeight: 200,
                              itemCount: model.items.length,
                              indexBarData:
                                  model.tags.map((e) => "$e").toList(),
                              itemBuilder: (BuildContext context, int index) {
                                return ListTile(
                                  leading: InkWell(
                                    child: CircleAvatar(
                                      backgroundImage: userAvatarProvider(model.items[index].user.avatar),
                                      radius: 22,
                                    ),
                                    onTap: () {
                                      NavigatorUtil.goPage(
                                          context,
                                          (context) => UserDetailPage(
                                                  PostUser.fromJson({
                                                "id":
                                                    "${model.items[index].user.uid}"
                                              })));
                                    },
                                  ),
                                  title:
                                      Text("${model.items[index].user.name}"),
                                  onTap: () {
                                    NavigatorUtil.goPage(
                                        context,
                                        (context) => ChatPage(UserInfo.fromJson(
                                            model.items[index].user.toJson())));
                                  },
                                );
                              },
                              physics: BouncingScrollPhysics(),
                              padding: EdgeInsets.zero,
                              susItemBuilder:
                                  (BuildContext context, int index) {
                                return Column(
                                  children: <Widget>[
                                    Container(
//                              height: 40,
                                      width: MediaQuery.of(context).size.width,
                                      padding: EdgeInsets.only(left: 16.0),
//                              color: Color(0xFFF3F4F5),
                                      alignment: Alignment.centerLeft,
                                      child: Text(
                                        '${model.items[index].getSuspensionTag()}',
                                        softWrap: false,
                                        style: TextStyle(
                                          fontSize: 14.0,
                                          color: Color(0xff9999999),
                                        ),
                                      ),
                                    ),
                                    Divider(
                                      indent: 12.0,
                                      endIndent: 12.0,
                                    ),
                                  ],
                                );
                              },
                              indexBarOptions: IndexBarOptions(
                                needRebuild: true,
                                ignoreDragCancel: true,
                                textStyle: TextStyle(
                                    color: Color(0xff999999), fontSize: 12.0),
                                selectTextStyle: TextStyle(
                                    fontSize: 20,
                                    color: Theme.of(context).accentColor),
//                        downTextStyle: TextStyle(fontSize: 12, color: Theme.of(context).accentColor),
//                        selectItemDecoration: BoxDecoration(color: Colors.green),
//                        downItemDecoration:
//                        BoxDecoration(color: Colors.green),
                                indexHintWidth: 33,
                                indexHintHeight: 33,
                                indexHintDecoration: BoxDecoration(
                                  image: DecorationImage(
                                    image: AssetImage(
                                        "lib/assets/img/friendlist_bg_letter.png"),
                                    fit: BoxFit.contain,
                                  ),
                                ),
                                indexHintTextStyle: TextStyle(
                                    fontSize: 18.0, color: Colors.white),
                                indexHintAlignment: Alignment.centerRight,
                                indexHintChildAlignment: Alignment(-0.25, 0.0),
                                indexHintOffset: Offset(0, 0),
                              ),
                            ),
                          ),
                  ],
                )
              : EasyRefresh.custom(
                  firstRefresh: false,
                  onRefresh: () => model.refresh(),
                  onLoad: () => model.loadMore(),
                  enableControlFinishRefresh: true,
                  controller: model.refreshController,
                  header: buildClassicalHeader(),
                  footer: buildClassicalFooter(),
                  slivers: <Widget>[
                    SliverToBoxAdapter(
                      child: _searchWidget(context),
                    ),
                    if (model.isBusy)
                      SliverToBoxAdapter(
                        child: RequestLoadingWidget(),
                      ),
                    if (model.list.length > 0)
                      SliverList(
                        delegate: SliverChildBuilderDelegate(
                          (context, index) {
                            return _buildItem(model.list[index]);
                          },
                          childCount: model.list.length,
                        ),
                      ),
                    if (model.list.length <= 0)
                      SliverToBoxAdapter(
                        child: _searchNothings(),
                      ),
                    if (model.isError)
                      SliverToBoxAdapter(
                        child: RequestErrorWidget(
                          () {
                            model.initData();
                          },
                          msg: widget.type == 0
                              ? "暂无好友~"
                              : widget.type == 1 ? "暂无关注~" : "暂无关注我的~",
                          assets: "emptypage-image-nomotion.png",
                        ),
                      ),
                  ],
                );
        });
  }

  Widget _buildItem(UserFriend user) {
    var _padding = EdgeInsets.symmetric(horizontal: 4.0);
    Widget child;
    if (widget.type == 2) {
      child = Row(
        children: <Widget>[
          CircleAvatar(
            backgroundImage: userAvatarProvider(user?.socialInfo?.avatar),
            radius: 22,
          ),
          SizedBox(
            width: 8,
          ),
          Expanded(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: <Widget>[
                Text(
                  "${user?.socialInfo?.name}",
                  style: Theme.of(context)
                      .textTheme
                      .headline3
                      .copyWith(fontWeight: FontWeight.normal),
                ),
                SizedBox(
                  height: 5,
                ),
                RichText(
                  text: TextSpan(
                      style: Theme.of(context).textTheme.subtitle2,
                      children: <InlineSpan>[
                        TextSpan(
                          text: '${DateFormat.formatCreateAt(user?.createdAt)}',
                          style: Theme.of(context).textTheme.bodyText1,
                        ),
                        user.makeFrom == 'follow'
                            ? TextSpan(
                                text: '通过线上',
                                style: Theme.of(context)
                                    .textTheme
                                    .bodyText1
                                    .copyWith(
                                        color: Theme.of(context).accentColor),
                              )
                            : TextSpan(
                                text: '通过扫码',
                                style: Theme.of(context)
                                    .textTheme
                                    .bodyText1
                                    .copyWith(
                                        color: Theme.of(context).accentColor),
                              ),
                        TextSpan(
                          text: "关注了你",
                          style: Theme.of(context).textTheme.bodyText1,
                        )
                      ]),
                ),
//                TextSpan(
//                  "${DateFormat.formatCreateAt(user?.createdAt)}通过${user.makeFrom}关注了你",
//
//                ),
              ],
            ),
          ),
//          if (user?.isFriends == "0")
//            user?.isIgnore == 0
//                ? GestureDetector(
//                    child: Container(
//                      width: 64,
//                      height: 30,
//                      alignment: Alignment.center,
//                      margin: _padding,
//                      child: Text(
//                        "关注",
//                        strutStyle: fixedLine,
//                        style: Theme.of(context).textTheme.bodyText2,
//                      ),
//                      decoration: BoxDecoration(
//                        borderRadius: BorderRadius.circular(20),
//                        border: Border.all(
//                          color: Color(0xff999999),
//                          width: .5,
//                        ),
//                      ),
//                    ),
//                    onTap: () async {
//                      await request(context, () async {
//                        var resp = await model.api
//                            .userIgnoreFollow(uid: user?.socialInfo?.id)
//                            .catchError((onError) {});
//                        if (resp?.code == 0) {
//                          setState(() {
//                            user.isIgnore = 1;
//                          });
//                        }
//                      });
//                    },
//                  )
//                : Container(
//                    width: 64,
//                    height: 30,
//                    margin: _padding,
//                    alignment: Alignment.center,
//                    child: Text(
//                      "已忽略",
//                      strutStyle: fixedLine,
//                      style: Theme.of(context).textTheme.bodyText2,
//                    ),
//                  ),
          if (user?.isIgnore == 0)
            user.isFriends == "1"
                ? Container(
                    width: 64,
                    height: 30,
//                    margin: _padding,
                    alignment: Alignment.center,
                    child: Text("已关注",
                        strutStyle: fixedLine,
                        style: Theme.of(context).textTheme.bodyText2),
                  )
                : GestureDetector(
                    child: Container(
                      width: 64,
                      height: 30,
                      margin: _padding,
                      alignment: Alignment.center,
                      child: Text(
                        "关注",
                        strutStyle: fixedLine,
                        style: Theme.of(context)
                            .textTheme
                            .bodyText2
                            .copyWith(color: Theme.of(context).accentColor),
                      ),
                      decoration: BoxDecoration(
                        borderRadius: BorderRadius.circular(20),
                        border: Border.all(
                          color: Theme.of(context).accentColor,
                          width: .5,
                        ),
                      ),
                    ),
                    onTap: () async {
                      if (user.isFriends == "1") return;
                      await request(context, () async {
                        var resp = await model.api
                            .userFollow(uid: user?.socialInfo?.id)
                            .catchError((onError) {});
                        if (resp?.code == 0) {
                          ToastUtil.show("关注成功");
                          setState(() {
                            user.isFriends = "1";
                          });
                        }
                      });
                    },
                  )
        ],
      );
    } else if (widget.type == 1) {
      child = Row(
        children: <Widget>[
          CircleAvatar(
            backgroundImage: userAvatarProvider(user?.socialInfo?.avatar),
            radius: 22,
          ),
          SizedBox(
            width: 8,
          ),
          Expanded(
            child: Text(
              "${user?.socialInfo?.name}",
              style: Theme.of(context)
                  .textTheme
                  .headline3
                  .copyWith(fontWeight: FontWeight.normal),
            ),
          ),
          GestureDetector(
            child: user.isFriends == "1"
                ? Row(
                    children: <Widget>[
                      Text("互关好友",
                          style: TextStyle(
                              fontSize: 14.0, color: Color(0xff999999)))
                    ],
                  )
                : user.isFriends == "0"
                    ? Text("已关注",
                        style:
                            TextStyle(fontSize: 14.0, color: Color(0xff999999)))
                    : Container(
                        width: 64,
                        height: 30,
                        margin: _padding,
                        alignment: Alignment.center,
                        child: Text(
                          "关注",
                          strutStyle: fixedLine,
                          style: Theme.of(context)
                              .textTheme
                              .bodyText2
                              .copyWith(color: Theme.of(context).accentColor),
                        ),
                        decoration: BoxDecoration(
                          borderRadius: BorderRadius.circular(20),
                          border: Border.all(
                            color: Theme.of(context).accentColor,
                            width: .5,
                          ),
                        ),
                      ),
//            Container(
//              width: 82,
//              height: 30,
//              alignment: Alignment.center,
//              child:
//              decoration: BoxDecoration(
//                borderRadius: BorderRadius.circular(20),
//                border: Border.all(
//                  color: Color(0xffDCDCDC),
//                  width: .5,
//                ),
//              ),
//            ),
            onTap: () async {
              bool flag;
              if (user.isFriends == "1") {
                flag = await showDialog(
                    context: context,
                    builder: (context) => CustomAlertDialog(
                          title: '是否取消关注,解除好友关系',
                          ok: () {
                            Navigator.of(context).pop(true);
                          },
                        ));
              } else if (user.isFriends == "0") {
                flag = true;
              }
              if (flag == true) {
                await request(context, () async {
                  var resp = await model.api
                      .userUnFollow(uid: user?.socialInfo?.id)
                      .catchError((onError) {});
                  setState(() {
                    user.isFriends = "2";
//                    text = "233";
                  });
//                  if (resp?.code == 0) {
//                    ToastUtil.show("取关成功");
//                    setState(() {
//                      model.list?.remove(user);
//                      if (model.list?.isEmpty == true) {
//                        model.initData();
//                      }
//                    });
//                  }
                });
              } else if (flag == null) {
                await request(context, () async {
                  var resp = await model.api
                      .userFollow(uid: user?.socialInfo?.id)
                      .catchError((onError) {});
                  if (resp?.code == 0) {
                    ToastUtil.show("关注成功");
                    setState(() {
                      user.isFriends = "0";
                    });
                  }
                });
              }
            },
          )
        ],
      );
    } else if (widget.type == 4) {
//        child = ListView.separated(itemBuilder: ()=>, itemCount: );
    }
//    return Column(
//      children: <Widget>[
//        Padding(
//          padding: const EdgeInsets.symmetric(horizontal: 12.0, vertical: 12.0),
//          child: InkWell(
//              onTap: () async {
////                if(widget.type == 0)  await NavigatorUtil.goPage(context, (context) => ChatPage(user?.socialInfo));
////                else
//                await NavigatorUtil.goPage(
//                    context,
//                    (context) => UserDetailPage(
//                        PostUser(
//                            id: "${user?.socialInfo?.id}",
//                            name: user?.socialInfo?.name,
//                            avatar: user?.socialInfo?.avatar),
//                        userFriends: model.list));
//                setState(() {});
//              },
//              child: child),
//        ),
//        Divider(
//          indent: 12.0,
//          height: 1,
//          endIndent: 12.0,
//        )
//      ],
//    );
    return Column(
      children: <Widget>[
        Padding(
          padding: const EdgeInsets.all(12.0),
          child: InkWell(
              onTap: () async {
                await NavigatorUtil.goPage(
                    context,
                    (context) => UserDetailPage(
                        PostUser(
                            id: "${user?.socialInfo?.id}",
                            name: user?.socialInfo?.name,
                            avatar: user?.socialInfo?.avatar),
                        userFriends: model.list));
                setState(() {});
              },
              child: child),
        ),
        Divider(
          height: 1,
        )
      ],
    );
  }

  Widget _searchWidget(BuildContext context) {
    return Container(
      margin: EdgeInsets.fromLTRB(12.0, 0, 12.0, 0),
      height: 35,
//      padding: EdgeInsets.symmetric(horizontal: 12.0),
//      padding: EdgeInsets.fromLTRB(12.0, 0, 12.0, 0),
      decoration: BoxDecoration(
        color: Color(0xffF1F1F1),
        shape: BoxShape.rectangle,
        borderRadius: BorderRadius.all(Radius.circular(50)),
      ),
      child: Row(
        children: <Widget>[
          SizedBox(
            width: 12.0,
          ),
          Image.asset("lib/assets/img/searchbar_icon_search.png"),
          SizedBox(
            width: 6,
          ),
          Expanded(
            child: TextField(
              controller: _controller,
              maxLines: 1,
              focusNode: _focusNode,
              strutStyle: StrutStyle(forceStrutHeight: true),
              decoration: InputDecoration(
                hintText: '输入账号/用户昵称',
                border: InputBorder.none,
                contentPadding: EdgeInsets.symmetric(
                  vertical: 11.5,
                ),
                hintStyle: TextStyle(
                  color: Color(0xff999999),
                ),
              ),
              onChanged: (value) {
                _searchValue.value = value;
                setState(() {});
              },
              onSubmitted: (value) {
                model.submitValue(value);
                // _searchModel.setKeyword(value);
                // Provider.of<SearchModel>(context, listen: false).queryValue(value);
              },
              style: TextStyle(
                color: Color(0xff333333),
              ),
            ),
          ),
          Visibility(
              visible: _searchValue.value?.isNotEmpty == true,
              child: GestureDetector(
                onTap: () {
                  model.submitValue(null);
                  _controller.clear();
                },
                child: Padding(
                  padding: const EdgeInsets.all(8.0),
                  child: Image.asset("lib/assets/img/searchbar_btn_no.png"),
                ),
              ))
        ],
      ),
    );
  }

  Widget _searchNothings() {
    return Column(
      mainAxisSize: MainAxisSize.min,
      children: <Widget>[
        Padding(
          padding: const EdgeInsets.fromLTRB(0, 50, 0, 0),
          child: Image.asset("lib/assets/img/emptypage-image-nonetwork.png"),
        ),
        Padding(
          padding: const EdgeInsets.fromLTRB(0, 12, 0, 12),
          child: Text(
            "搜索无果",
            style: Theme.of(context).textTheme.bodyText2,
          ),
        ),
        SizedBox(
          height: 100,
        )
      ],
    );
  }

  @override
  UserFriendModel createModel() => UserFriendModel(widget.type);
}