import 'dart:async';

import 'package:flutter_test/flutter_test.dart';
import 'package:hepan_everyday/features/school/school_page_adapter.dart';
import 'package:hepan_everyday/features/school/school_navigation_policy.dart';
import 'package:hepan_everyday/data/schedule_file_import.dart';
import 'package:hepan_everyday/domain/course.dart';

import 'recognized_timetable_test.dart' show fixture;

void main() {
  final target = Uri.parse(
    'https://yjsjy.uestc.edu.cn/pyxx/pygl/xskbcx/index/1',
  );
  test('in-flight read cannot authorize a different origin', () async {
    final reader = SchoolReader(SchoolPageAdapter()),
        body = Completer<String>();
    final valid = reader.read(target, () => body.future);
    final rejected = reader.read(
      Uri.parse('https://evil.example/pyxx/pygl/xskbcx/index/1'),
      () async => fixture(),
    );
    body.complete(fixture());
    await expectLater(rejected, throwsA(isA<UnsupportedSchoolLayout>()));
    await valid;
  });
  test('invalidated read cannot become a fresh authenticated draft', () async {
    final reader = SchoolReader(SchoolPageAdapter()),
        body = Completer<String>();
    final stale = reader.read(target, () => body.future);
    final check = expectLater(stale, throwsA(isA<UnsupportedSchoolLayout>()));
    reader.invalidate();
    final fresh = await reader.read(target, () async => fixture());
    body.complete(fixture());
    await check;
    expect(fresh.courses.length, 4);
    expect(reader.busy, isFalse);
  });
  test('official numeric semester routes are allowed but alternate endpoints are not', () {
    expect(
      SchoolNavigationPolicy.isTimetable(
        Uri.parse('https://yjsjy.uestc.edu.cn/pyxx/pygl/xskbcx/index/73'),
      ),
      isTrue,
    );
    for (final url in [
      'http://yjsjy.uestc.edu.cn/pyxx/pygl/xskbcx/index/1',
      'https://user@yjsjy.uestc.edu.cn/pyxx/pygl/xskbcx/index/1',
      'https://yjsjy.uestc.edu.cn:444/pyxx/pygl/xskbcx/index/1',
      'https://yjsjy.uestc.edu.cn/pyxx/pygl/xskbcx/index/73/other',
      'https://yjsjy.uestc.edu.cn/pyxx/pygl/xskbcx/index/73evil',
    ]) {
      expect(SchoolNavigationPolicy.isTimetable(Uri.parse(url)), isFalse);
    }
  });
  test('BOM saved HTML file imports without claiming live authentication', () {
    final draft = ScheduleFileImport.parse('\uFEFF${fixture()}');
    expect(draft.courses.length, 4);
    expect(draft.semesterLabel, '2026-2027秋');
    expect(draft.source, CourseSource.file);
    expect(draft.courses.every((c) => c.source == CourseSource.file), isTrue);
    expect(
      () => ScheduleFileImport.parse('<html>登录</html>'),
      throwsA(isA<UnsupportedSchoolLayout>()),
    );
  });
}