import 'package:flutter_test/flutter_test.dart';
import 'package:marianum_mobile/api/marianumconnect/queries/timetable_get_element_week/timetable_element_type.dart';
import 'package:marianum_mobile/api/marianumconnect/queries/timetable_get_holidays/timetable_get_holidays_response.dart';
import 'package:marianum_mobile/api/marianumconnect/queries/timetable_get_rooms/timetable_get_rooms_response.dart';
import 'package:marianum_mobile/api/marianumconnect/queries/timetable_get_subjects/timetable_get_subjects_response.dart';
import 'package:marianum_mobile/api/mhsl/custom_timetable_event/get/get_custom_timetable_event_response.dart';
import 'package:marianum_mobile/state/app/modules/capabilities/bloc/capabilities_state.dart';
import 'package:marianum_mobile/state/app/modules/timetable/bloc/timetable_state.dart';
import 'package:marianum_mobile/state/app/modules/timetable/policy/timetable_policy.dart';
import 'package:marianum_mobile/state/app/modules/timetable/subject/timetable_subject.dart';

ElementTimetable _element(TimetableElementType type, [int id = 7]) =>
    ElementTimetable((type: type, id: id, label: 'X'));

void main() {
  group('TimetableSubject', () {
    test('own plan keeps the legacy storage slot and persists', () {
      const own = OwnTimetable();
      expect(own.storageId, '');
      expect(own.persistent, isTrue);
      expect(own.supportsCustomEvents, isTrue);
    });

    test('element plans get distinct slots and do not persist', () {
      final room = _element(TimetableElementType.room, 1);
      final teacher = _element(TimetableElementType.teacher, 1);
      expect(room.storageId, isNot(teacher.storageId));
      expect(room.storageId, isNot(const OwnTimetable().storageId));
      expect(room.persistent, isFalse);
      expect(room.supportsCustomEvents, isFalse);
    });

    test('element equality ignores the display label', () {
      final a = ElementTimetable((
        type: TimetableElementType.room,
        id: 3,
        label: 'A',
      ));
      final b = ElementTimetable((
        type: TimetableElementType.room,
        id: 3,
        label: 'B',
      ));
      expect(a, b);
      expect(a.hashCode, b.hashCode);
      expect(a, isNot(_element(TimetableElementType.schoolClass, 3)));
    });
  });

  group('TimetablePolicy', () {
    const student = CapabilitiesState(userType: 'STUDENT');
    const teacher = CapabilitiesState(
      userType: 'TEACHER',
      viewForeignTimetables: true,
    );

    test('own plan offers custom events and subject colours', () {
      final p = TimetablePolicy.resolve(
        subject: const OwnTimetable(),
        capabilities: student,
      );
      expect(p.canManageCustomEvents, isTrue);
      expect(p.canEditSubjectColors, isTrue);
      expect(p.canOpenForeign, isFalse);
      expect(p.showClassInsteadOfTeacher, isFalse);
    });

    test('own teacher plan shows classes and may open foreign plans', () {
      final p = TimetablePolicy.resolve(
        subject: const OwnTimetable(),
        capabilities: teacher,
      );
      expect(p.showClassInsteadOfTeacher, isTrue);
      expect(p.canOpenForeign, isTrue);
    });

    test('foreign plans are read-only', () {
      final p = TimetablePolicy.resolve(
        subject: _element(TimetableElementType.room),
        capabilities: teacher,
      );
      expect(p.canManageCustomEvents, isFalse);
      expect(p.canEditSubjectColors, isFalse);
      expect(p.canOpenForeign, isTrue);
      expect(p.showClassInsteadOfTeacher, isFalse);
    });

    test('class labels follow the viewed element, not the viewer', () {
      expect(
        TimetablePolicy.resolve(
          subject: _element(TimetableElementType.teacher),
          capabilities: student,
        ).showClassInsteadOfTeacher,
        isTrue,
      );
      expect(
        TimetablePolicy.resolve(
          subject: _element(TimetableElementType.student),
          capabilities: teacher,
        ).showClassInsteadOfTeacher,
        isFalse,
      );
    });
  });

  group('TimetableState.isReady', () {
    final empty = TimetableState(
      startDate: DateTime(2026, 9, 14),
      endDate: DateTime(2026, 9, 18),
    );

    final withReference = empty.copyWith(
      rooms: TimetableGetRoomsResponse(result: const []),
      subjects: TimetableGetSubjectsResponse(result: const []),
      schoolHolidays: TimetableGetHolidaysResponse(result: const []),
    );

    test('is false without reference data', () {
      expect(empty.isReady(needsCustomEvents: false), isFalse);
    });

    test('only waits for custom events when the subject needs them', () {
      expect(withReference.isReady(needsCustomEvents: false), isTrue);
      expect(withReference.isReady(needsCustomEvents: true), isFalse);
      expect(
        withReference
            .copyWith(customEvents: GetCustomTimetableEventResponse(const []))
            .isReady(needsCustomEvents: true),
        isTrue,
      );
    });
  });
}