fluffychat/lib/components/list_items/message.dart

import 'package:bubble/bubble.dart';
import 'package:famedlysdk/famedlysdk.dart';
import 'package:fluffychat/components/message_content.dart';
import 'package:fluffychat/components/reply_content.dart';
import 'package:fluffychat/i18n/i18n.dart';
import 'package:fluffychat/utils/date_time_extension.dart';
import 'package:fluffychat/utils/string_color.dart';
import 'package:fluffychat/views/image_viewer.dart';
import 'package:flutter/material.dart';

import '../avatar.dart';
import '../matrix.dart';
import 'state_message.dart';

class Message extends StatelessWidget {
  final Event event;
  final Event nextEvent;
  final Function(Event) onSelect;
  final bool longPressSelect;
  final bool selected;
  final Timeline timeline;

  const Message(this.event,
      {this.nextEvent,
      this.longPressSelect,
      this.onSelect,
      this.selected,
      this.timeline});

  @override
  Widget build(BuildContext context) {
    if (![EventTypes.Message, EventTypes.Sticker].contains(event.type)) {
      return StateMessage(event);
    }

    Client client = Matrix.of(context).client;
    final bool ownMessage = event.senderId == client.userID;
    Alignment alignment = ownMessage ? Alignment.topRight : Alignment.topLeft;
    Color color = Theme.of(context).secondaryHeaderColor;
    final bool sameSender = nextEvent != null &&
            [EventTypes.Message, EventTypes.Sticker].contains(nextEvent.type)
        ? nextEvent.sender.id == event.sender.id
        : false;
    BubbleNip nip = sameSender
        ? BubbleNip.no
        : ownMessage ? BubbleNip.rightBottom : BubbleNip.leftBottom;
    final Color textColor = ownMessage ? Colors.white : Colors.black;
    MainAxisAlignment rowMainAxisAlignment =
        ownMessage ? MainAxisAlignment.end : MainAxisAlignment.start;

    if (ownMessage) {
      color = event.status == -1
          ? Colors.redAccent
          : Theme.of(context).primaryColor;
    }

    List<Widget> rowChildren = [
      Expanded(
        child: AnimatedOpacity(
          duration: Duration(milliseconds: 500),
          opacity: (event.status == 0 || event.redacted) ? 0.5 : 1,
          child: Bubble(
            elevation: 0,
            radius: Radius.circular(8),
            alignment: alignment,
            margin: BubbleEdges.symmetric(horizontal: 4),
            color: color,
            nip: nip,
            child: Column(
              mainAxisSize: MainAxisSize.min,
              crossAxisAlignment: CrossAxisAlignment.start,
              children: <Widget>[
                Row(
                  mainAxisSize: MainAxisSize.min,
                  children: <Widget>[
                    Text(
                      ownMessage
                          ? I18n.of(context).you
                          : event.sender.calcDisplayname(),
                      style: TextStyle(
                        color: ownMessage
                            ? textColor
                            : event.sender.calcDisplayname().color,
                        fontWeight: FontWeight.bold,
                      ),
                    ),
                    SizedBox(width: 4),
                    Text(
                      event.time.localizedTime(context),
                      style: TextStyle(
                        color: textColor.withAlpha(180),
                      ),
                    ),
                  ],
                ),
                if (event.isReply)
                  FutureBuilder<Event>(
                    future: timeline.getEventById(event.content['m.relates_to']
                        ['m.in_reply_to']['event_id']),
                    builder: (BuildContext context, snapshot) {
                      final Event replyEvent = snapshot.hasData
                          ? snapshot.data
                          : Event(
                              eventId: event.content['m.relates_to']
                                  ['m.in_reply_to']['event_id'],
                              content: {"msgtype": "m.text", "body": "..."},
                              senderId: event.senderId,
                              typeKey: "m.room.message",
                              room: event.room,
                              roomId: event.roomId,
                              status: 1,
                              time: DateTime.now(),
                            );
                      return Container(
                        margin: EdgeInsets.symmetric(vertical: 4.0),
                        child: ReplyContent(replyEvent, lightText: ownMessage),
                      );
                    },
                  ),
                MessageContent(
                  event,
                  textColor: textColor,
                ),
              ],
            ),
          ),
        ),
      ),
    ];
    final Widget avatarOrSizedBox = sameSender
        ? SizedBox(width: 40)
        : Avatar(
            event.sender.avatarUrl,
            event.sender.calcDisplayname(),
            onTap: () => ImageViewer.show(context, event.sender.avatarUrl),
          );
    if (ownMessage) {
      rowChildren.add(avatarOrSizedBox);
    } else {
      rowChildren.insert(0, avatarOrSizedBox);
    }

    return InkWell(
      onTap: longPressSelect ? () => null : () => onSelect(event),
      splashColor: Theme.of(context).primaryColor.withAlpha(100),
      onLongPress: !longPressSelect ? null : () => onSelect(event),
      child: AnimatedContainer(
        duration: Duration(milliseconds: 300),
        curve: Curves.fastOutSlowIn,
        color: selected
            ? Theme.of(context).primaryColor.withAlpha(100)
            : Theme.of(context).primaryColor.withAlpha(0),
        child: Padding(
          padding: EdgeInsets.only(
              left: 8.0, right: 8.0, bottom: sameSender ? 4.0 : 8.0),
          child: Row(
            crossAxisAlignment: CrossAxisAlignment.end,
            mainAxisAlignment: rowMainAxisAlignment,
            children: rowChildren,
          ),
        ),
      ),
    );
  }
}