import 'dart:convert';
import 'dart:io';

import 'package:flutter_test/flutter_test.dart';
import 'package:hepan_everyday/services/school_page_diagnostic.dart';
import 'package:hepan_everyday/features/school/undergraduate/timetable_adapter.dart';

void main() {
  final uri = Uri.parse(
    'https://eams.uestc.edu.cn/eams/courseTableForStd.action',
  );
  test(
    'leading comments do not remove course declarations from the evidence',
    () {
      final store = SchoolPageDiagnostic();
      addTearDown(store.clear);
      final source = File('test/fixtures/school/undergraduate-timetable.html')
          .readAsStringSync()
          .replaceFirst(
            'var unitCount = 12;',
            '// units; keep this declaration\nvar unitCount = 12;',
          )
          .replaceAll(
            'activity = new TaskActivity',
            '/* course; declaration */activity = new TaskActivity',
          );
      expect(
        UndergraduateTimetableAdapter.extract(source, uri).courses,
        hasLength(18),
      );
      store.remember(source, uri);
      expect(
        UndergraduateTimetableAdapter.extract(
          utf8.decode(store.export()!),
          uri,
        ).courses,
        hasLength(18),
      );
    },
  );
  test('malformed activity and index statements remain malformed in the exported evidence', () {
    final store = SchoolPageDiagnostic();
    addTearDown(store.clear);
    final fixture = File('test/fixtures/school/undergraduate-timetable.html')
        .readAsStringSync();
    for (final bad in [
      fixture.replaceFirst('"教师1"', 'null'),
      fixture.replaceFirst('2*unitCount+0', 'unknown()'),
    ]) {
      expect(
        () => UndergraduateTimetableAdapter.extract(bad, uri),
        throwsFormatException,
      );
      store.remember(bad, uri);
      final output = utf8.decode(store.export()!);
      expect(
        () => UndergraduateTimetableAdapter.extract(output, uri),
        throwsFormatException,
      );
      expect(output, contains(bad.contains('null') ? 'null' : 'unknown()'));
    }
  });
  test('diagnostic snapshot preserves parser evidence but removes login material and active HTML', () {
    var now = DateTime.utc(2026, 10, 16, 5);
    final store = SchoolPageDiagnostic(clock: () => now);
    final fixture = File('test/fixtures/school/undergraduate-timetable.html')
        .readAsStringSync();
    store.remember(
      '''$fixture<input name="password" value="SECRET"><input name="params" value="ticket=SECRET"><a href="https://evil.test/?ticket=SECRET" onclick="steal()">链接</a><script>var token="SECRET";</script>''',
      uri,
    );
    final output = utf8.decode(store.export()!);
    expect(output, isNot(contains('SECRET')));
    expect(output, isNot(contains('onclick')));
    expect(output, isNot(contains('evil.test')));
    expect(output, contains('Content-Security-Policy'));
    expect(
      UndergraduateTimetableAdapter.extract(output, uri).courses,
      hasLength(18),
    );
    now = now.add(const Duration(minutes: 11));
    expect(store.export(), isNull);
  });
  test('only trusted school evidence can be kept and logout clears it', () {
    final store = SchoolPageDiagnostic();
    store.remember('<table id="manualArrangeCourseTable"></table>', uri);
    expect(store.export(), isNotNull);
    store.clear();
    expect(store.export(), isNull);
    store.remember(
      '<table>secret</table>',
      Uri.parse('https://idas.uestc.edu.cn/authserver/login'),
    );
    expect(store.export(), isNull);
    store.remember(
      '<input type="password"><table id="manualArrangeCourseTable"></table>',
      uri,
    );
    expect(store.export(), isNull);
  });
}