import 'package:flutter_test/flutter_test.dart';
import 'package:please_pay_me/data/models/budget.dart';
import 'package:please_pay_me/data/models/expense.dart';
import 'package:please_pay_me/data/models/job.dart';
import 'package:please_pay_me/data/models/json.dart';

void main() {
  group('json helpers', () {
    test('coerce numbers coming as int, double or string', () {
      expect(asDouble(10), 10.0);
      expect(asDouble(10.5), 10.5);
      expect(asDouble('10,5'), 10.5);
      expect(asDouble(null, fallback: -1), -1);
      expect(asInt('42'), 42);
    });

    test('asDate keeps the calendar day and drops time', () {
      expect(asDate('2026-09-19'), DateTime(2026, 9, 19));
      expect(asDate('2026-09-19T23:45:00Z'), DateTime(2026, 9, 19));
    });

    test('formatIsoDate pads month and day', () {
      expect(formatIsoDate(DateTime(2026, 1, 5)), '2026-01-05');
    });
  });

  group('BudgetStatus', () {
    BudgetStatus parse(Map<String, dynamic> overrides) {
      return BudgetStatus.fromJson({
        'budget': {
          'id': 1,
          'user_id': 7,
          'name': 'До аванса',
          'total_amount': 42000,
          'start_date': '2026-09-13',
          'end_date': '2026-09-27',
          'currency': 'RUB',
          'is_active': true,
        },
        'today': '2026-09-19',
        'days_left': 9,
        'total_spent': 21000,
        'remaining': 21000,
        'daily_limit': 2333.33,
        'spent_today': 1200,
        'remaining_today': 1133.33,
        'is_over_daily': false,
        'is_over_budget': false,
        'is_expired': false,
        'selected': true,
        ...overrides,
      });
    }

    test('parses nested budget', () {
      final status = parse({});

      expect(status.budget.name, 'До аванса');
      expect(status.budget.endDate, DateTime(2026, 9, 27));
      expect(status.selected, isTrue);
    });

    test('spentProgress is a clamped share of the total', () {
      expect(parse({}).spentProgress, closeTo(0.5, 0.001));
      expect(parse({'total_spent': 50000}).spentProgress, 1.0);
    });

    test('dailyProgress falls back to full bar when the limit is zero', () {
      expect(parse({'daily_limit': 0, 'spent_today': 500}).dailyProgress, 1.0);
      expect(parse({'daily_limit': 0, 'spent_today': 0}).dailyProgress, 0.0);
    });
  });

  group('ExpensesPage', () {
    test('reports pagination state', () {
      final page = ExpensesPage.fromJson({
        'page': 1,
        'total_pages': 3,
        'total_count': 55,
        'page_size': 20,
        'total_sum': 12345.5,
        'budget_id': 4,
        'items': [
          {'id': 1, 'budget_id': 4, 'amount': 250, 'note': 'Кофе', 'spent_at': '2026-09-19'},
          {'id': 2, 'budget_id': 4, 'amount': 100.5, 'note': null, 'spent_at': '2026-09-18'},
        ],
      });

      expect(page.hasMore, isTrue);
      expect(page.items, hasLength(2));
      expect(page.items.last.note, isNull);
      expect(page.totalSum, 12345.5);
    });
  });

  group('Job', () {
    test('parses pay days and the weekend policy', () {
      final job = Job.fromJson({
        'id': 1,
        'user_id': 7,
        'name': 'Основная',
        'salary_amount': 180000,
        'currency': 'RUB',
        'pay_days': [5, 20],
        'first_pay_percent': 40,
        'weekend_policy': 'after_weekend',
        'is_active': true,
        'next_pays': [
          {'date': '2026-09-20', 'scheduled_day': 20, 'percent': 60, 'amount': 108000},
        ],
      });

      expect(job.payDays, [5, 20]);
      expect(job.weekendPolicy, WeekendPolicy.afterWeekend);
      expect(job.nextPay?.amount, 108000);
    });

    test('unknown weekend policy degrades to the default', () {
      expect(WeekendPolicy.fromWire('nonsense'), WeekendPolicy.beforeWeekend);
    });
  });
}