immich/mobile/lib/services/memory.service.dart

import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:immich_mobile/interfaces/asset.interface.dart';
import 'package:immich_mobile/models/memories/memory.model.dart';
import 'package:immich_mobile/providers/api.provider.dart';
import 'package:immich_mobile/repositories/asset.repository.dart';
import 'package:immich_mobile/services/api.service.dart';
import 'package:immich_mobile/utils/translation.dart';
import 'package:logging/logging.dart';

final memoryServiceProvider = StateProvider<MemoryService>((ref) {
  return MemoryService(
    ref.watch(apiServiceProvider),
    ref.watch(assetRepositoryProvider),
  );
});

class MemoryService {
  final log = Logger("MemoryService");

  final ApiService _apiService;
  final IAssetRepository _assetRepository;

  MemoryService(this._apiService, this._assetRepository);

  Future<List<Memory>?> getMemoryLane() async {
    try {
      final now = DateTime.now();
      final data = await _apiService.memoriesApi.searchMemories(
        for_: DateTime.utc(now.year, now.month, now.day, 0, 0, 0),
      );

      if (data == null) {
        return null;
      }

      List<Memory> memories = [];

      for (final memory in data) {
        final dbAssets = await _assetRepository
            .getAllByRemoteId(memory.assets.map((e) => e.id));
        final yearsAgo = now.year - memory.data.year;
        if (dbAssets.isNotEmpty) {
          final String title = t('years_ago', {'years': yearsAgo.toString()});
          memories.add(
            Memory(
              title: title,
              assets: dbAssets,
            ),
          );
        }
      }

      return memories.isNotEmpty ? memories : null;
    } catch (error, stack) {
      log.severe("Cannot get memories", error, stack);
      return null;
    }
  }
}