import 'dart:io';

import 'package:flutter_test/flutter_test.dart';
import 'package:fuel_tax_tracker/services/database_service.dart';
import 'package:path/path.dart' as p;
import 'package:path_provider_platform_interface/path_provider_platform_interface.dart';
import 'package:plugin_platform_interface/plugin_platform_interface.dart';
import 'package:sqflite_common_ffi/sqflite_ffi.dart';

/// Receipts are filed under `receipts/<vin>/<yyyy.mm>/` locally (mirroring
/// the `Receipts/<vin>/<yyyy.mm>` layout the cloud side uses — see
/// `cloud_sync_service_test.dart`), so browsing either one shows which
/// vehicle and month a photo belongs to.
void main() {
  late Directory tempDir;
  late DatabaseService database;

  setUpAll(() {
    sqfliteFfiInit();
    databaseFactory = databaseFactoryFfi;
  });

  setUp(() async {
    tempDir = await Directory.systemTemp.createTemp('receipt_storage_test_');
    PathProviderPlatform.instance = _FakePathProviderPlatform(tempDir.path);
    database = DatabaseService();
    await database.init();
  });

  tearDown(() async {
    await database.rawDb.close();
    await tempDir.delete(recursive: true);
  });

  test('storeReceiptImage files the photo under receipts/<vin>/<yyyy.mm>/', () async {
    final source = File(p.join(tempDir.path, 'source.jpg'))..writeAsBytesSync([1, 2, 3]);

    final storedPath = await database.storeReceiptImage(
      source,
      'entry-1',
      '1FMPU18L1TLB51349',
      DateTime(2026, 8, 13),
    );

    expect(
      p.dirname(storedPath),
      p.join(database.receiptsDirectory.path, '1FMPU18L1TLB51349', '2026.08'),
    );
    expect(p.basename(storedPath), 'entry-1.jpg');
    expect(await File(storedPath).exists(), isTrue);
  });

  test('storeReceiptImage sanitizes a VIN with characters unsafe in a path', () async {
    final source = File(p.join(tempDir.path, 'source.jpg'))..writeAsBytesSync([1, 2, 3]);

    final storedPath = await database.storeReceiptImage(
      source,
      'entry-2',
      '../etc/passwd',
      DateTime(2026, 1, 5),
    );

    expect(
      p.dirname(storedPath),
      p.join(
        database.receiptsDirectory.path,
        sanitizedPathSegment('../etc/passwd'),
        '2026.01',
      ),
    );
    expect(p.isWithin(database.receiptsDirectory.path, storedPath), isTrue);
  });

  test('monthFolderName pads single-digit months', () {
    expect(monthFolderName(DateTime(2026, 1, 5)), '2026.01');
    expect(monthFolderName(DateTime(2026, 12, 5)), '2026.12');
  });
}

class _FakePathProviderPlatform extends PathProviderPlatform with MockPlatformInterfaceMixin {
  final String tempPath;
  _FakePathProviderPlatform(this.tempPath);

  @override
  Future<String?> getApplicationDocumentsPath() async => tempPath;

  @override
  Future<String?> getTemporaryPath() async => tempPath;
}