frosty/lib/screens/channel/video/video_overlay.dart

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_mobx/flutter_mobx.dart';
import 'package:frosty/screens/channel/chat/details/chat_users_list.dart';
import 'package:frosty/screens/channel/chat/stores/chat_store.dart';
import 'package:frosty/screens/channel/video/video_bar.dart';
import 'package:frosty/screens/channel/video/video_store.dart';
import 'package:frosty/widgets/uptime.dart';
import 'package:intl/intl.dart';

/// Creates a widget containing controls which enable interactions with an underlying [Video] widget.
class VideoOverlay extends StatelessWidget {
  final VideoStore videoStore;
  final ChatStore chatStore;

  const VideoOverlay({
    Key? key,
    required this.videoStore,
    required this.chatStore,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    final orientation = MediaQuery.of(context).orientation;

    final backButton = IconButton(
      tooltip: 'Back',
      icon: Icon(
        Icons.adaptive.arrow_back_rounded,
        color: Colors.white,
      ),
      onPressed: Navigator.of(context).pop,
    );

    final chatOverlayButton = Observer(
      builder: (_) => IconButton(
        tooltip: videoStore.settingsStore.fullScreenChatOverlay
            ? 'Hide chat overlay'
            : 'Show chat overlay',
        onPressed: () => videoStore.settingsStore.fullScreenChatOverlay =
            !videoStore.settingsStore.fullScreenChatOverlay,
        icon: videoStore.settingsStore.fullScreenChatOverlay
            ? const Icon(Icons.chat_rounded)
            : const Icon(Icons.chat_outlined),
        color: Colors.white,
      ),
    );

    final refreshButton = Tooltip(
      message: 'Refresh',
      preferBelow: false,
      child: IconButton(
        icon: const Icon(
          Icons.refresh_rounded,
          color: Colors.white,
        ),
        onPressed: videoStore.handleRefresh,
      ),
    );

    final fullScreenButton = Tooltip(
      message: videoStore.settingsStore.fullScreen
          ? 'Exit fullscreen mode'
          : 'Enter fullscreen mode',
      preferBelow: false,
      child: IconButton(
        icon: Icon(
          videoStore.settingsStore.fullScreen
              ? Icons.fullscreen_exit_rounded
              : Icons.fullscreen_rounded,
          color: Colors.white,
        ),
        onPressed: () => videoStore.settingsStore.fullScreen =
            !videoStore.settingsStore.fullScreen,
      ),
    );

    final rotateButton = Tooltip(
      message: orientation == Orientation.portrait
          ? 'Enter landscape mode'
          : 'Exit landscape mode',
      preferBelow: false,
      child: IconButton(
        icon: const Icon(
          Icons.screen_rotation_rounded,
          color: Colors.white,
        ),
        onPressed: () {
          if (orientation == Orientation.portrait) {
            SystemChrome.setPreferredOrientations([
              DeviceOrientation.landscapeLeft,
              DeviceOrientation.landscapeRight,
            ]);
          } else {
            SystemChrome.setPreferredOrientations(
              [DeviceOrientation.portraitUp],
            );
            SystemChrome.setPreferredOrientations([]);
          }
        },
      ),
    );

    final streamInfo = videoStore.streamInfo;
    if (streamInfo == null) {
      return Stack(
        children: [
          Row(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              backButton,
              const Spacer(),
              if (videoStore.settingsStore.fullScreen &&
                  orientation == Orientation.landscape)
                chatOverlayButton,
            ],
          ),
          Align(
            alignment: Alignment.bottomRight,
            child: Row(
              mainAxisAlignment: MainAxisAlignment.end,
              children: [
                refreshButton,
                if (!videoStore.isIPad) rotateButton,
                if (orientation == Orientation.landscape) fullScreenButton,
              ],
            ),
          ),
        ],
      );
    }

    return Observer(
      builder: (context) {
        return Stack(
          children: [
            Row(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                backButton,
                if (orientation == Orientation.landscape)
                  Expanded(
                    child: VideoBar(
                      streamInfo: streamInfo,
                      titleTextColor: Colors.white,
                      subtitleTextColor: Colors.white,
                      subtitleTextWeight: FontWeight.w500,
                    ),
                  ),
                if (videoStore.settingsStore.fullScreen &&
                    orientation == Orientation.landscape)
                  chatOverlayButton,
              ],
            ),
            Center(
              child: Tooltip(
                message: videoStore.paused ? 'Play' : 'Pause',
                preferBelow: false,
                child: IconButton(
                  iconSize: 56,
                  icon: Icon(
                    videoStore.paused
                        ? Icons.play_arrow_rounded
                        : Icons.pause_rounded,
                    color: Colors.white,
                  ),
                  onPressed: videoStore.handlePausePlay,
                ),
              ),
            ),
            Align(
              alignment: Alignment.bottomLeft,
              child: Row(
                crossAxisAlignment: CrossAxisAlignment.end,
                children: [
                  Expanded(
                    child: Padding(
                      padding: const EdgeInsets.all(12),
                      child: Row(
                        children: [
                          Tooltip(
                            message: 'Stream uptime',
                            preferBelow: false,
                            child: Row(
                              children: [
                                const Icon(
                                  Icons.circle,
                                  color: Colors.red,
                                  size: 10,
                                ),
                                const SizedBox(width: 4),
                                Uptime(
                                  startTime: streamInfo.startedAt,
                                  style: const TextStyle(
                                    color: Colors.white,
                                    fontWeight: FontWeight.w500,
                                  ),
                                ),
                              ],
                            ),
                          ),
                          const SizedBox(width: 12),
                          Tooltip(
                            message: 'Viewer count',
                            preferBelow: false,
                            child: GestureDetector(
                              onTap: () => showModalBottomSheet(
                                isScrollControlled: true,
                                context: context,
                                builder: (context) => SizedBox(
                                  height:
                                      MediaQuery.of(context).size.height * 0.8,
                                  child: GestureDetector(
                                    onTap: FocusScope.of(context).unfocus,
                                    child: ChattersList(
                                      chatDetailsStore:
                                          chatStore.chatDetailsStore,
                                      chatStore: chatStore,
                                      userLogin: streamInfo.userLogin,
                                    ),
                                  ),
                                ),
                              ),
                              child: Row(
                                children: [
                                  const Icon(
                                    Icons.visibility,
                                    size: 14,
                                    color: Colors.white,
                                  ),
                                  const SizedBox(width: 4),
                                  Text(
                                    NumberFormat().format(
                                      videoStore.streamInfo?.viewerCount,
                                    ),
                                    style: const TextStyle(
                                      color: Colors.white,
                                      fontWeight: FontWeight.w500,
                                    ),
                                  ),
                                ],
                              ),
                            ),
                          ),
                        ],
                      ),
                    ),
                  ),
                  Tooltip(
                    message: 'Enter picture-in-picture',
                    preferBelow: false,
                    child: IconButton(
                      icon: const Icon(
                        Icons.picture_in_picture_alt_rounded,
                        color: Colors.white,
                      ),
                      onPressed: videoStore.requestPictureInPicture,
                    ),
                  ),
                  refreshButton,
                  if (!videoStore.isIPad) rotateButton,
                  if (orientation == Orientation.landscape) fullScreenButton,
                ],
              ),
            ),
          ],
        );
      },
    );
  }
}