ente/lib/ui/viewer/file/video_widget_new.dart

import "dart:io";

import "package:flutter/cupertino.dart";
import "package:flutter/material.dart";
import "package:media_kit/media_kit.dart";
import "package:media_kit_video/media_kit_video.dart";
import "package:photos/generated/l10n.dart";
import "package:photos/models/file/extensions/file_props.dart";
import "package:photos/models/file/file.dart";
import "package:photos/services/files_service.dart";
import "package:photos/ui/viewer/file/thumbnail_widget.dart";
import "package:photos/utils/dialog_util.dart";
import "package:photos/utils/file_util.dart";
import "package:photos/utils/toast_util.dart";

class VideoWidgetNew extends StatefulWidget {
  final EnteFile file;
  const VideoWidgetNew(this.file, {super.key});

  @override
  State<VideoWidgetNew> createState() => _VideoWidgetNewState();
}

class _VideoWidgetNewState extends State<VideoWidgetNew> {
  // Create a [Player] to control playback.
  late final player = Player();
  // Create a [VideoController] to handle video output from [Player].
  VideoController? controller;
  final _progressNotifier = ValueNotifier<double?>(null);

  @override
  void initState() {
    super.initState();
    if (widget.file.isRemoteFile) {
      _loadNetworkVideo();
      _setFileSizeIfNull();
    } else if (widget.file.isSharedMediaToAppSandbox) {
      final localFile = File(getSharedMediaFilePath(widget.file));
      if (localFile.existsSync()) {
        _setVideoController(localFile.path);
      } else if (widget.file.uploadedFileID != null) {
        _loadNetworkVideo();
      }
    } else {
      widget.file.getAsset.then((asset) async {
        if (asset == null || !(await asset.exists)) {
          if (widget.file.uploadedFileID != null) {
            _loadNetworkVideo();
          }
        } else {
          asset.getMediaUrl().then((url) {
            _setVideoController(
              url ??
                  'https://user-images.githubusercontent.com/28951144/229373695-22f88f13-d18f-4288-9bf1-c3e078d83722.mp4',
            );
          });
        }
      });
    }
  }

  @override
  void dispose() {
    player.dispose();
    // _progressNotifier.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Center(
      child: controller != null
          ? Video(controller: controller!)
          : _getLoadingWidget(),
    );
  }

  void _loadNetworkVideo() {
    getFileFromServer(
      widget.file,
      progressCallback: (count, total) {
        _progressNotifier.value = count / (widget.file.fileSize ?? total);
        if (_progressNotifier.value == 1) {
          if (mounted) {
            showShortToast(context, S.of(context).decryptingVideo);
          }
        }
      },
    ).then((file) {
      if (file != null) {
        _setVideoController(file.path);
      }
    }).onError((error, stackTrace) {
      showErrorDialog(context, "Error", S.of(context).failedToDownloadVideo);
    });
  }

  void _setFileSizeIfNull() {
    if (widget.file.fileSize == null && widget.file.canEditMetaInfo) {
      FilesService.instance
          .getFileSize(widget.file.uploadedFileID!)
          .then((value) {
        widget.file.fileSize = value;
        if (mounted) {
          setState(() {});
        }
      });
    }
  }

  Widget _getLoadingWidget() {
    return Stack(
      children: [
        _getThumbnail(),
        Container(
          color: Colors.black12,
          constraints: const BoxConstraints.expand(),
        ),
        Center(
          child: SizedBox.fromSize(
            size: const Size.square(20),
            child: ValueListenableBuilder(
              valueListenable: _progressNotifier,
              builder: (BuildContext context, double? progress, _) {
                return progress == null || progress == 1
                    ? const CupertinoActivityIndicator(
                        color: Colors.white,
                      )
                    : CircularProgressIndicator(
                        backgroundColor: Colors.black,
                        value: progress,
                        valueColor: const AlwaysStoppedAnimation<Color>(
                          Color.fromRGBO(45, 194, 98, 1.0),
                        ),
                      );
              },
            ),
          ),
        ),
      ],
    );
  }

  Widget _getThumbnail() {
    return Container(
      color: Colors.black,
      constraints: const BoxConstraints.expand(),
      child: ThumbnailWidget(
        widget.file,
        fit: BoxFit.contain,
      ),
    );
  }

  void _setVideoController(String url) {
    if (mounted) {
      setState(() {
        controller = VideoController(player);
        player.open(Media(url));
      });
    }
  }
}