/// Chooses between mock data and the HTTP client, then returns [Item] lists.
library;

import '../models/item.dart';
import 'fake_item_data.dart';
import 'item_api.dart';

/// Single entry point for catalog data. UI code should depend on this type,
/// not on [ItemApi] or [FakeItemData] directly.
class ItemRepository {
  ItemRepository({
    ItemApi? api,
    this.useRemoteData = false,
  }) : _api = api ?? ItemApi();

  final ItemApi _api;

  /// When true, [fetchItems] hits the network; otherwise it returns local fakes.
  bool useRemoteData;

  Future<List<Item>> fetchItems() async {
    if (!useRemoteData) {
      return List<Item>.from(FakeItemData.items);
    }

    try {
      return await _api.fetchItems();
    } catch (_) {
      // Keep the demo usable if the device is offline or the API fails.
      return List<Item>.from(FakeItemData.items);
    }
  }

  /// Builds a locally-created item (no network round-trip).
  Item createLocal({
    required String title,
    required String subtitle,
    required String description,
    required ItemCategory category,
  }) {
    return Item(
      id: 'local-${DateTime.now().microsecondsSinceEpoch}',
      title: title.trim(),
      subtitle: subtitle.trim(),
      description: description.trim(),
      category: category,
      createdAt: DateTime.now(),
    );
  }
}