import 'dart:convert';

import 'package:flutter_test/flutter_test.dart';
import 'package:shared_preferences/shared_preferences.dart';

import 'package:miler/data/accepted_store.dart';

/// Deleting a mock generator does not reach the rows it already wrote.
///
/// Every store in `accepted_store.dart` is SharedPreferences, so a phone that
/// once ran a build with the demo layer still carries those bookings — and
/// Bookings merges the accepted store into its list while Activity reads the
/// completed and skipped ones. That is why demo stops kept appearing on exactly
/// those two tabs with nothing left in the repo to explain them.
///
/// The risk in fixing it is the obvious one: a blanket wipe would take the
/// rider's real accepted work with it. So these tests are mostly about what
/// must *survive*.
void main() {
  TestWidgetsFlutterBinding.ensureInitialized();

  Map<String, dynamic> booking(String id, {String? pickupId}) => {
    'orderid': id,
    if (pickupId != null) 'pickupid': pickupId,
    'pickupcustomer': 'Customer $id',
    'orderstatus': 'accepted',
  };

  test('drops the demo bookings and keeps the real ones', () async {
    SharedPreferences.setMockInitialValues({});
    await debugSeedStore(
      'mock_accepted_bookings',
      jsonEncode([
        booking('MOCK-Q-1001', pickupId: 'del-mock-q-1001'),
        booking('884213'),
        booking('MOCK-B-3004'),
      ]),
    );

    expect(await purgeDemoRecords(), 2);

    final left = await getAcceptedBookings();
    expect(left.map((b) => b['orderid']), ['884213']);
  });

  test('matches on the pickup id too', () async {
    // `getMockQueues` wrote ids like `del-mock-q-1001` on the pickup field
    // while the order id looked ordinary in some rows.
    SharedPreferences.setMockInitialValues({});
    await debugSeedStore(
      'completed_bookings',
      jsonEncode([
        booking('7001', pickupId: 'del-mock-d-2003'),
        booking('7002', pickupId: 'del-77aa'),
      ]),
    );

    expect(await purgeDemoRecords(), 1);

    // Read the raw store, not [getCompletedBookings]: that reader also drops
    // anything not stamped today, which would empty this list for a reason
    // that has nothing to do with the purge.
    final prefs = await SharedPreferences.getInstance();
    final left =
        (jsonDecode(prefs.getString(await debugStoreKey('completed_bookings'))!)
                as List)
            .map((e) => (e as Map)['orderid'])
            .toList();
    expect(left, ['7002']);
  });

  test('clears the id-only stores as well', () async {
    SharedPreferences.setMockInitialValues({});
    await debugSeedStore('mock_rejected_order_ids', ['MOCK-Q-1005', '99120']);
    await debugSeedStore('collected_order_ids', ['MOCK-B-3001', '77451']);
    await debugSeedStore('not_loaded_orders', ['DEMO-2', '31009']);

    expect(await purgeDemoRecords(), 3);
    expect(await getRejectedOrderIds(), {'99120'});
    expect(await getCollectedOrderIds(), {'77451'});
    expect(await getNotLoadedOrderIds(), {'31009'});
  });

  test('a real order id is never mistaken for a demo one', () async {
    // The ids a backend actually issues. None of these may be touched — losing
    // a genuine accepted booking is a rider driving to a door with no record of
    // why, which is far worse than a leftover demo row.
    final real = [
      booking('884213'),
      booking('ORD-2026-000412'),
      booking('DM-99120', pickupId: 'del-77aa'),
      booking('mockingbird-77'), // contains "mock", does not start with it
    ];
    SharedPreferences.setMockInitialValues({});
    await debugSeedStore('mock_accepted_bookings', jsonEncode(real));

    expect(await purgeDemoRecords(), 0);
    expect((await getAcceptedBookings()).length, real.length);
  });

  test('an untouched install is a no-op', () async {
    SharedPreferences.setMockInitialValues({});
    expect(await purgeDemoRecords(), 0);
  });
}