immich/mobile/lib/modules/asset_viewer/views/image_viewer_page.dart

import 'package:cached_network_image/cached_network_image.dart';
import 'package:flutter/material.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:hive/hive.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:immich_mobile/constants/hive_box.dart';
import 'package:immich_mobile/modules/asset_viewer/models/image_viewer_page_state.model.dart';
import 'package:immich_mobile/modules/asset_viewer/providers/image_viewer_page_state.provider.dart';
import 'package:immich_mobile/modules/asset_viewer/ui/download_loading_indicator.dart';
import 'package:immich_mobile/modules/asset_viewer/ui/exif_bottom_sheet.dart';
import 'package:immich_mobile/modules/asset_viewer/ui/top_control_app_bar.dart';
import 'package:immich_mobile/modules/home/services/asset.service.dart';
import 'package:immich_mobile/shared/models/immich_asset.model.dart';
import 'package:immich_mobile/shared/models/immich_asset_with_exif.model.dart';

// ignore: must_be_immutable
class ImageViewerPage extends HookConsumerWidget {
  final String imageUrl;
  final String heroTag;
  final String thumbnailUrl;
  final ImmichAsset asset;
  final AssetService _assetService = AssetService();
  ImmichAssetWithExif? assetDetail;

  ImageViewerPage(
      {Key? key, required this.imageUrl, required this.heroTag, required this.thumbnailUrl, required this.asset})
      : super(key: key);

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final downloadAssetStatus = ref.watch(imageViewerStateProvider).downloadAssetStatus;
    var box = Hive.box(userInfoBox);

    getAssetExif() async {
      assetDetail = await _assetService.getAssetById(asset.id);
    }

    useEffect(() {
      getAssetExif();
      return null;
    }, []);

    return Scaffold(
      backgroundColor: Colors.black,
      appBar: TopControlAppBar(
        asset: asset,
        onMoreInfoPressed: () {
          showModalBottomSheet(
            backgroundColor: Colors.black,
            barrierColor: Colors.transparent,
            isScrollControlled: false,
            context: context,
            builder: (context) {
              return ExifBottomSheet(assetDetail: assetDetail!);
            },
          );
        },
        onDownloadPressed: () {
          ref.watch(imageViewerStateProvider.notifier).downloadAsset(asset, context);
        },
      ),
      body: SafeArea(
        child: Stack(
          children: [
            Center(
              child: Hero(
                tag: heroTag,
                child: CachedNetworkImage(
                  fit: BoxFit.cover,
                  imageUrl: imageUrl,
                  httpHeaders: {"Authorization": "Bearer ${box.get(accessTokenKey)}"},
                  fadeInDuration: const Duration(milliseconds: 250),
                  errorWidget: (context, url, error) => ConstrainedBox(
                    constraints: const BoxConstraints(maxWidth: 300),
                    child: Wrap(
                      spacing: 32,
                      runSpacing: 32,
                      alignment: WrapAlignment.center,
                      children: [
                        const Text(
                          "Failed To Render Image - Possibly Corrupted Data",
                          textAlign: TextAlign.center,
                          style: TextStyle(fontSize: 16, color: Colors.white),
                        ),
                        SingleChildScrollView(
                          child: Text(
                            error.toString(),
                            textAlign: TextAlign.center,
                            style: TextStyle(fontSize: 12, color: Colors.grey[400]),
                          ),
                        ),
                      ],
                    ),
                  ),
                  placeholder: (context, url) {
                    return CachedNetworkImage(
                      cacheKey: thumbnailUrl,
                      fit: BoxFit.cover,
                      imageUrl: thumbnailUrl,
                      httpHeaders: {"Authorization": "Bearer ${box.get(accessTokenKey)}"},
                      placeholderFadeInDuration: const Duration(milliseconds: 0),
                      progressIndicatorBuilder: (context, url, downloadProgress) => Transform.scale(
                        scale: 0.2,
                        child: CircularProgressIndicator(value: downloadProgress.progress),
                      ),
                      errorWidget: (context, url, error) => Icon(
                        Icons.error,
                        color: Colors.grey[300],
                      ),
                    );
                  },
                ),
              ),
            ),
            if (downloadAssetStatus == DownloadAssetStatus.loading)
              const Center(
                child: DownloadLoadingIndicator(),
              ),
          ],
        ),
      ),
    );
  }
}