together_mobile/lib/screens/message/components/friend_message_bubble.dart

import 'dart:async';
import 'dart:io';

import 'package:cached_network_image/cached_network_image.dart';
import 'package:flutter/material.dart';

import 'package:together_mobile/common/constants.dart';
import 'package:together_mobile/models/contact_model.dart';
import 'package:together_mobile/models/init_get_it.dart';
import 'package:together_mobile/models/user_model.dart';
import 'package:together_mobile/request/server.dart';

class FriendMessageBubble extends StatefulWidget {
  const FriendMessageBubble({
    super.key,
    required this.contactId,
    required this.senderId,
    required this.type,
    required this.dateTime,
    required this.isShowTime,
    required this.text,
    required this.attachments,
  });

  final String contactId, senderId, type, dateTime, text;
  final bool isShowTime;
  final List<String> attachments;

  @override
  State<FriendMessageBubble> createState() => _FriendMessageBubbleState();
}

class _FriendMessageBubbleState extends State<FriendMessageBubble> {
  // add late here so you can access widget instance
  List<bool> _isImagesLoaded = [];
  final List<Timer> _timerList = [];

  @override
  void initState() {
    super.initState();
    _isImagesLoaded = List.filled(widget.attachments.length, false);
    for (var i = 0; i < widget.attachments.length; i++) {
      String imagePath =
          '${getIt.get<UserProfile>().baseImageDir}/${widget.attachments[i]}';
      File file = File(imagePath);
      if (file.existsSync()) {
        _isImagesLoaded[i] = true;
      } else {
        _isImagesLoaded[i] = false;
        _timerList.add(Timer.periodic(
          const Duration(milliseconds: 200),
          (timer) {
            if ((file.existsSync())) {
              setState(() {
                _isImagesLoaded[i] = true;
              });
              timer.cancel();
            }
          },
        ));
      }
    }
  }

  @override
  void dispose() {
    super.dispose();
    for (var element in _timerList) {
      element.cancel();
    }
  }

  @override
  Widget build(BuildContext context) {
    bool isFriend = widget.senderId == widget.contactId;

    return Container(
      padding: const EdgeInsets.symmetric(
        vertical: kDefaultPadding / 2,
        horizontal: kDefaultPadding,
      ),
      child: Column(
        children: [
          // message date time
          if (widget.isShowTime)
            SizedBox(
              height: 35.0,
              child: Text(
                widget.dateTime,
                style: const TextStyle(
                  color: kUnActivatedColor,
                ),
              ),
            ),
          Row(
            textDirection: isFriend ? TextDirection.ltr : TextDirection.rtl,
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              isFriend
                  ? getIt
                          .get<ContactAccountProfile>()
                          .friends[widget.contactId]!
                          .avatar
                          .isEmpty
                      ? CircleAvatar(
                          child: Image.asset('assets/images/user_2.png'),
                        )
                      : CircleAvatar(
                          backgroundImage: CachedNetworkImageProvider(
                            '$userAvatarsUrl/${getIt.get<ContactAccountProfile>().friends[widget.contactId]!.avatar}',
                          ),
                        )
                  : CircleAvatar(
                      backgroundImage: CachedNetworkImageProvider(
                        '$userAvatarsUrl/${getIt.get<UserProfile>().avatar}',
                      ),
                    ),
              const SizedBox(
                width: 10,
              ),
              Expanded(
                child: Column(
                  crossAxisAlignment: isFriend
                      ? CrossAxisAlignment.start
                      : CrossAxisAlignment.end,
                  children: [
                    if (widget.type == 'text/multipart')
                      // message box
                      Container(
                        padding: const EdgeInsets.fromLTRB(10, 10, 10, 0),
                        decoration: BoxDecoration(
                          color: isFriend
                              ? const Color.fromARGB(255, 241, 241, 241)
                              : kPrimaryColor,
                          borderRadius: BorderRadius.circular(10.0),
                        ),
                        child: Column(
                          crossAxisAlignment: CrossAxisAlignment.start,
                          children: [
                            // text message content
                            if (widget.text.isNotEmpty)
                              Text(
                                widget.text,
                                textWidthBasis: TextWidthBasis.longestLine,
                              ),
                            const SizedBox(
                              height: 10,
                            ),
                            // image content if have
                            if (widget.attachments.isNotEmpty)
                              ...List.generate(
                                widget.attachments.length,
                                (int index) {
                                  return Container(
                                    margin: const EdgeInsets.only(
                                      bottom: 15,
                                    ),
                                    constraints: const BoxConstraints(
                                      maxHeight: 120,
                                    ),
                                    decoration: BoxDecoration(
                                      borderRadius: BorderRadius.circular(10.0),
                                    ),
                                    child: _isImagesLoaded[index]
                                        ? Image.file(File(
                                            '${getIt.get<UserProfile>().baseImageDir}/${widget.attachments[index]}',
                                          ))
                                        : Container(
                                            width: 20,
                                            height: 40,
                                            padding: const EdgeInsets.symmetric(
                                                vertical: 10),
                                            child:
                                                const CircularProgressIndicator(
                                              color: kSecondaryColor,
                                              strokeWidth: 3.0,
                                            ),
                                          ),
                                  );
                                },
                              ),
                          ],
                        ),
                      ),
                  ],
                ),
              ),
            ],
          ),
          TextButton(
            onPressed: () {},
            style: TextButton.styleFrom(
              padding: EdgeInsets.zero,
              tapTargetSize: MaterialTapTargetSize.shrinkWrap,
            ),
            child: const Text('显示信息'),
          ),
        ],
      ),
    );
  }
}