import 'package:flutter_test/flutter_test.dart';

import 'package:sxchnge_kyc/sxchnge_kyc.dart';
import 'package:sxchnge_kyc/src/transport/contracts.dart';

void main() {
  test('mapping preserves backend usage and independent remaining value', () {
    final data = LimitsMapper.fromDTO(
      const LimitsDTO(
        tier: 'basic',
        simulated: false,
        rows: [LimitDTO('day', 'EUR', 10000, 250000, 10000, 5500, 3000, 1000)],
      ),
    );
    final row = data.rows.single;
    expect(row.usedMinor, 3000);
    expect(row.reservedMinor, 1000);
    expect(row.remainingMinor, 5500);
    expect(row.occupiedFraction, 0.4);
  });
  test('capacity visualization handles unused, exhausted and zero caps', () {
    VisibleLimit row(int cap, int used, int reserved) => VisibleLimit(
      period: LimitPeriod.day,
      currency: 'EUR',
      basicMinor: cap,
      verifiedMinor: cap,
      currentMinor: cap,
      remainingMinor: 0,
      usedMinor: used,
      reservedMinor: reserved,
    );
    expect(row(10000, 0, 0).occupiedFraction, 0);
    expect(row(10000, 8000, 2000).occupiedFraction, 1);
    expect(row(10000, 12000, 2000).occupiedFraction, 1);
    expect(row(0, 0, 0).occupiedFraction, 0);
  });
  test('stub provides nonzero daily and monthly usage', () async {
    final identity = DummyIdentityService(delay: Duration.zero);
    final service = DummyLimitsService(identity);
    final data = await service.fetch();
    expect(data.rows.first.usedMinor, 3000);
    expect(data.rows.first.reservedMinor, 1000);
    expect(data.rows.first.remainingMinor, 6000);
    expect(data.rows.last.usedMinor, 18000);
    expect(data.rows.last.remainingMinor, 31000);
  });
}