55 lines
2.3 KiB
Dart
55 lines
2.3 KiB
Dart
import 'school_identity.dart';
|
|
|
|
/// School-specific term numbers, independent of teaching-week dates.
|
|
class SchoolTerm {
|
|
SchoolTerm(this.id, {this.school = SupportedSchool.uestcGraduate}) {
|
|
if (id < 1 || id > 9999 ||
|
|
(school == SupportedSchool.uestcUndergraduate && (id < 3 || (id-3)%20 != 0))) {
|
|
throw ArgumentError('学校学期编号无效');
|
|
}
|
|
}
|
|
final int id;
|
|
final SupportedSchool school;
|
|
String get label {
|
|
if (school == SupportedSchool.uestcUndergraduate) {
|
|
final n = (id - 3) ~/ 20, year = 2013 + ((id - 3) ~/ 40);
|
|
return '$year-${year+1}${n.isEven ? '第一学期' : '第二学期'}';
|
|
}
|
|
final year = 1990 + ((id - 1) ~/ 2);
|
|
return '$year-${year + 1}年${id.isOdd ? '秋' : '春'}';
|
|
}
|
|
|
|
static List<SchoolTerm> get choices =>
|
|
List.generate(73, (index) => SchoolTerm(73 - index));
|
|
static List<SchoolTerm> undergraduateChoices(DateTime now, {SchoolTerm? saved}) {
|
|
final maxN = (now.year + 1 - 2013)*2+1;
|
|
final ids = {for(var n=0;n<=maxN;n++) 3+n*20,
|
|
if(saved?.school == SupportedSchool.uestcUndergraduate) saved!.id}.toList()
|
|
..sort((a,b)=>b.compareTo(a));
|
|
return ids.where((id)=>id<=9999).map((id)=>SchoolTerm(id,school:SupportedSchool.uestcUndergraduate)).toList();
|
|
}
|
|
void _graduateOnly() {
|
|
if (school != SupportedSchool.uestcGraduate) throw StateError('本科查询不能使用研究生链接');
|
|
}
|
|
Uri get timetableUri {
|
|
_graduateOnly();
|
|
return Uri.https('yjsjy.uestc.edu.cn', '/pyxx/pygl/xskbcx/index/$id');
|
|
}
|
|
Uri get examUri {
|
|
_graduateOnly();
|
|
return Uri.https('yjsjy.uestc.edu.cn', '/pyxx/pygl/kskcxx/index', {'xq': '$id'});
|
|
}
|
|
Map<String, dynamic> toJson() => {'id': id, 'schoolId': school.id};
|
|
factory SchoolTerm.fromJson(Map<String, dynamic> json) {
|
|
if (json['id'] is! int) throw const FormatException('学校学期无效');
|
|
try {
|
|
return SchoolTerm(json['id'] as int, school: json['schoolId'] == null
|
|
? SupportedSchool.uestcGraduate : SupportedSchool.fromId(json['schoolId'] as String));
|
|
} catch (_) { throw const FormatException('学校学期无效'); }
|
|
}
|
|
@override
|
|
bool operator ==(Object other) => other is SchoolTerm && other.id == id && other.school == school;
|
|
@override
|
|
int get hashCode => Object.hash(id, school);
|
|
}
|