import 'dart:convert';

import 'package:html/parser.dart' as html;

import '../domain/exam_schedule.dart';
import '../features/school/school_exam_adapter.dart';
import '../features/school/undergraduate/exam_adapter.dart';

class ExamFileImport {
  static ExamSchedule parse(String content) {
    if (utf8.encode(content).length > 2 * 1024 * 1024) {
      throw const FormatException('文件不能超过2MB');
    }
    final doc = html.parse(content.replaceFirst('\uFEFF', ''));
    if (doc.querySelector('#stdExamTableForm') != null) {
      return UndergraduateExamAdapter.extract(content);
    }
    if (doc.querySelector('#sample-table-1') != null) {
      return SchoolExamAdapter.extract(content);
    }
    throw const FormatException('未识别到学校排考页面');
  }
}