import 'package:flutter_test/flutter_test.dart';
import 'package:receipity/services/backup_format.dart';

void main() {
  test('round-trips a backup document', () {
    const original = BackupDocument(
      version: 2,
      exportedAt: '2026-08-29T12:00:00.000',
      darkMode: true,
      supermarkets: [
        {'id': 1, 'name': 'Jumbo', 'color': 0xFFEEC21B, 'sort_order': 0},
      ],
      products: [
        {
          'id': 1,
          'name': 'Milk',
          'normalized_name': 'MILK',
          'last_price': 1.5,
          'times_seen': 2,
          'favourite': 1,
          'image_path': 'products/product_1.jpg',
          'supermarket': 'Jumbo',
          'notes': 'Organic',
          'created_at': '2026-08-29T12:00:00.000',
          'updated_at': '2026-08-29T12:00:00.000',
        },
      ],
      shops: [
        {
          'id': 8,
          'supermarket': 'Jumbo',
          'shopped_at': '2026-08-29T12:00:00.000',
          'receipt_image_path': 'receipts/shop_8.jpg',
          'total': 1.5,
          'created_at': '2026-08-29T12:00:00.000',
        },
      ],
      shopItems: [
        {
          'id': 1,
          'shop_id': 8,
          'product_id': 1,
          'name': 'Milk',
          'price': 1.5,
          'quantity': 1,
          'unit_price': 1.5,
        },
      ],
      shoppingLists: [
        {
          'id': 1,
          'name': 'Weekly',
          'created_at': '2026-08-29T12:00:00.000',
          'updated_at': '2026-08-29T12:00:00.000',
        },
      ],
      shoppingListItems: [
        {
          'id': 1,
          'list_id': 1,
          'product_id': 1,
          'name': 'Milk',
          'checked': 0,
          'sort_order': 0,
        },
      ],
      images: {'products/product_1.jpg': 'abc123'},
    );

    final parsed = BackupDocument.parse(original.encode());
    expect(parsed.darkMode, isTrue);
    expect(parsed.products.single['name'], 'Milk');
    expect(parsed.shops.single['id'], 8);
    expect(parsed.shopItems.single['product_id'], 1);
    expect(parsed.shoppingLists.single['name'], 'Weekly');
    expect(parsed.shoppingListItems.single['name'], 'Milk');
    expect(parsed.images['products/product_1.jpg'], 'abc123');
  });

  test('accepts a version 1 backup without shopping lists', () {
    const json = '''
{
  "format": "receipity-backup",
  "version": 1,
  "exportedAt": "2026-08-29T12:00:00.000",
  "darkMode": false,
  "supermarkets": [],
  "products": [],
  "shops": [],
  "shopItems": [],
  "images": {}
}
''';
    final parsed = BackupDocument.parse(json);
    expect(parsed.version, 1);
    expect(parsed.shoppingLists, isEmpty);
    expect(parsed.shoppingListItems, isEmpty);
  });

  test('rejects a file that is not a Receipity backup', () {
    expect(
      () => BackupDocument.parse('{"hello":"world"}'),
      throwsFormatException,
    );
  });

  test('maps stored photo paths to backup keys', () {
    expect(
      backupImageKey('/data/app_flutter/products/product_12.jpg'),
      'products/product_12.jpg',
    );
    expect(
      backupImageKey('/data/app_flutter/receipts/shop_3.jpg'),
      'receipts/shop_3.jpg',
    );
    expect(backupImageKey(null), isNull);
  });
}