flutter-sport/lib/widgets/dialog/scan_add_new_friend_dialog.dart

import 'dart:async';

import 'package:cached_network_image/cached_network_image.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:sport/bean/user_info.dart';
import 'package:sport/services/api/inject_api.dart';
import 'package:sport/utils/toast.dart';

import '../button_cancel.dart';
import '../button_primary.dart';
import '../space.dart';

/// 业务组件 只针对 扫码加好友情况下的弹窗...
class ScanAddFriendCustomAlertDialog extends StatefulWidget {
  final Function ok;
  final bool addClose;
  final UserInfo userInfo;
  final String newFriendCode;
  final bool isWaitAdd;
  final Function goNext;

  ScanAddFriendCustomAlertDialog(
      {this.userInfo,
      this.ok,
      this.addClose = false,
      this.newFriendCode,
      this.isWaitAdd,
      this.goNext});

  @override
  State<StatefulWidget> createState() {
    // TODO: implement createState
    return _ScanAddFriendCustomAlertDialog();
  }
}

class _ScanAddFriendCustomAlertDialog
    extends State<ScanAddFriendCustomAlertDialog> with InjectApi {
  String okText = "申请中";
  int dialogIndex = 0;
  List<Function> dialogs;
  Timer timerText;
  Timer timerIsFriend;
  @override
  initState() {
    super.initState();
  }

  initOkText() {
    int cout = 0;
    List<String> okTexts = ["申请中", "申请中.", "申请中..", "申请中..."];
    timerText = Timer.periodic(const Duration(seconds: 1), (timer) {
      //到时回调
      setState(() {
        okText = okTexts[cout % 3];
      });
      cout += 1;
      if (cout >= 30) {
        timer.cancel();
        timer = null;
      }
    });
  }

  @override
  void dispose() {
    // TODO: implement dispose
    super.dispose();
    timerText?.cancel();
//    timer = null;
    timerIsFriend?.cancel();
  }

  void pollGetIsFriend(int uid) {
    timerIsFriend = Timer.periodic(const Duration(seconds: 2), (timer) async {
      //到时回调
      var data = (await api.postIsFriend(uid)).data;
      if (data) {
        ToastUtil.show("添加成功");
        timer.cancel();
        timer = null;
        Navigator.of(context).pop(false);
      }
    });
  }

  @override
  Widget build(BuildContext context) {
    var _width = MediaQuery.of(context).size.width * 0.86;
    Widget userInfoContent(bool isShowUserInfo) {
      return Column(
        children: <Widget>[
          CircleAvatar(
              backgroundImage: CachedNetworkImageProvider(
                widget.userInfo?.avatar,
              ),
              radius: 35),
          Space(
            height: 8.0,
          ),
          Center(
            child: Text(
              "${widget.userInfo.name}",
              style: Theme.of(context).textTheme.headline3,
            ),
          ),
          Space(
            height: 8.0,
          ),
          isShowUserInfo
              ? Row(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: <Widget>[
                    Row(
                      children: <Widget>[
                        Image.asset(
                            "lib/assets/img/mine_icon_${widget.userInfo.gender == 1 ? "manl" : "girl"}_gray.png"),
                        Space(
                          width: 4,
                        ),
                        Text(
                          widget.userInfo.gender == 1 ? "男" : "女",
                          style:
                              TextStyle(color: Color(0xff999999), fontSize: 12),
                        ),
                      ],
                    ),
                    if ((widget.userInfo.age ?? 0) != 0)
                      Padding(
                        padding: const EdgeInsets.only(left: 10.0),
                        child: Text(
                          "${widget.userInfo.age}岁",
                          style:
                              TextStyle(color: Color(0xff999999), fontSize: 12),
                        ),
                      ),
                    if (widget.userInfo.city != null)
                      Padding(
                        padding: const EdgeInsets.only(left: 10.0),
                        child: Text(
                          "${widget.userInfo.province}${widget.userInfo.province == widget.userInfo.city ? '' : widget.userInfo.city}",
                          style:
                              TextStyle(color: Color(0xff999999), fontSize: 12),
                        ),
                      ),
                  ],
                )
              : Text(
                  "请求添加您为好友",
                  style: Theme.of(context).textTheme.subtitle1,
                ),
        ],
      );
    }

    Widget baseDialog(double width, Widget button, bool isShowUserInfo) {
      return Center(
        child: Container(
          width: width,
          decoration: BoxDecoration(
            borderRadius: BorderRadius.all(Radius.circular(10.0)),
            color: Colors.white,
          ),
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: <Widget>[
              Align(
                  alignment: Alignment.topRight,
                  child: IconButton(
                    icon: Image.asset("lib/assets/img/btn_close_big.png"),
                    onPressed: () async {
                      await api.postRejectFriend(widget.userInfo.id);
                      Navigator.pop(context, false);
                    },
                  )),
              ConstrainedBox(
                  constraints: BoxConstraints(
                      maxHeight: MediaQuery.of(context).size.height - 100),
                  child: SingleChildScrollView(
                      child: userInfoContent(isShowUserInfo))),
              Padding(
                padding: const EdgeInsets.all(16.0),
                child: Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: <Widget>[
                    Expanded(
                      child: FeelCancelButton(
                          height: 35,
                          callback: () async {
                            // 这里cancel好像不需要?
                            // 代表是第三个框 可以 取消...
                            if (!isShowUserInfo) {
                              await api.postRejectFriend(widget.userInfo.id);
                            }
                            Navigator.of(context).pop(false);
                          },
                          content: "取消"),
                    ),
                    SizedBox(
                      width: 16,
                    ),
                    Expanded(child: button)
                  ],
                ),
              )
            ],
          ),
        ),
      );
    }

    Widget scanDialog(double width) {
      return baseDialog(
        width,
        PrimaryButton(
            height: 35,
            callback: () async {
              await api.getNewFriend(widget.newFriendCode);
              setState(() {
                dialogIndex = 1;
                initOkText(); // 申请中的 setState
                pollGetIsFriend(widget.userInfo.id); // 是否是好友的
              });
            },
            content: "申请好友"),
        true,
      );
    }

    Widget confirmDialog(double width) {
      return baseDialog(width,
          FeelCancelButton(height: 35, content: okText, callback: () {}), true);
    }

    Widget confirmDialogOther(double width) {
      return baseDialog(
          width,
          PrimaryButton(
              height: 35,
              callback: () async {
                var data =
                    (await api.postAcceptFriend(widget.userInfo.id)).data;
                // 这里我不想去 争论什么 这里就是返回null的。 从来都没有用result 去 判断...
                if (data == null) {
                  ToastUtil.show("添加成功");
                }
                Navigator.of(context).pop(false);
              },
              content: "添加"),
          false);
    }

    dialogs = [scanDialog, confirmDialog, confirmDialogOther];
    return Material(
      type: MaterialType.transparency,
      child: widget.isWaitAdd != null
          ? dialogs[2](_width)
          : dialogs[dialogIndex](_width),
    );
  }
}