public static async Task <Semester> getSemester(bool forceRemote = false, bool getNextSemester = false)
{
if (isDemo())
{
var start = DateTime.Now.AddDays(-20);
while (start.DayOfWeek != DayOfWeek.Monday)
{
start = start.AddDays(-1);
}
if (!getNextSemester)
{
return new Semester {
startDate = start.ToString("yyyy-MM-dd"),
endDate = start.AddDays(10 * 7 - 1).ToString("yyyy-MM-dd"),
semesterEname = "2333-2334-Spring",
}
}
;
else
{
return new Semester {
startDate = start.AddDays(10 * 7).ToString("yyyy-MM-dd"),
endDate = start.AddDays(20 * 7 - 1).ToString("yyyy-MM-dd"),
semesterEname = "2334-2335-Autumn",
}
};
}
if (!forceRemote)
{
Semesters __semesters = null;
//try memory
if (semesters != null)
{
Debug.WriteLine("[getCalendar] memory");
__semesters = semesters;
}
else //try localSettings
{
var localJSON = await readCache(SEMESTERS_FILENAME);
if (localJSON.Length > 0)
{
Debug.WriteLine("[getCalendar] local settings");
__semesters = JSON.parse <Semesters>(localJSON);
}
}
//cache hit
if (__semesters != null)
{
if (getNextSemester)
{
return(__semesters.nextSemester);
}
if (DateTime.Parse(__semesters.currentSemester.endDate + " 23:59") < DateTime.Now)
{
//perform a remote update
Task task = getSemester(forceRemote: true);
task.ContinueWith((_) => 0);
Debug.WriteLine("[getCalendar] Returning cache next");
if (__semesters.nextSemester.endDate == null)
{
//automatically complete missing endDate
if (__semesters.nextSemester.semesterEname.IndexOf("Autumn") != -1 ||
__semesters.nextSemester.semesterEname.IndexOf("Spring") != -1)
{
__semesters.nextSemester.endDate = DateTime.Parse(__semesters.nextSemester.startDate).AddDays(18 * 7 - 1).ToString();
}
}
return(__semesters.nextSemester);
}
Debug.WriteLine("[getCalendar] Returning cache");
return(__semesters.currentSemester);
}
}
//fetch from remote
Semesters _remoteSemesters = null;
if (credentialAbsent() == false)
{
try {
_remoteSemesters = await Remote.getRemoteSemesters();
} catch (Exception) { }
}
if (_remoteSemesters == null || _remoteSemesters.currentSemester == null)
{
Debug.WriteLine("[getCalendar] remote fail, falling back to hosted");
_remoteSemesters = await Remote.getHostedSemesters();
}
semesters = _remoteSemesters;
writeCache(SEMESTERS_FILENAME, JSON.stringify(semesters));
Debug.WriteLine("[getCalendar] Returning remote");
return(semesters.currentSemester);
}
static public async Task <List <Deadline> > getAllDeadlines(bool forceRemote = false)
{
if (isDemo())
{
var list = new List <Deadline>();
var start = DateTime.Now.AddDays(-20);
while (start.DayOfWeek != DayOfWeek.Monday)
{
start = start.AddDays(-1);
}
for (var i = 0; i <= 3; i++)
{
list.Add(new Deadline {
course = "操作系统",
ddl = start.AddDays(i * 7 + 4 + 7).ToString("yyyy-MM-dd"),
name = $"代码阅读报告{i + 1}",
hasBeenFinished = (i < 3),
id = "operating_systems_" + i.ToString(),
});
}
for (var i = 0; i <= 3; i++)
{
list.Add(new Deadline {
course = "数据结构",
ddl = start.AddDays(i * 7 + 3 + 7).ToString("yyyy-MM-dd"),
name = $"数据结构习题{i + 1}",
hasBeenFinished = (i < 3),
id = "data_structure_" + i.ToString(),
});
}
return(list);
}
if (!forceRemote)
{
//try session memory
if (deadlines != null)
{
Debug.WriteLine("[getAllDeadlines] Returning memory");
return(deadlines);
}
//try local
var cache = await readCache(DEADLINES_FILENAME);
if (cache.Length > 0)
{
Debug.WriteLine("[getAllDeadlines] Returning local");
return(JSON.parse <List <Deadline> >(cache));
}
}
//fetch from remote
List <Deadline> _deadlines = new List <Deadline>();
foreach (var course in await getCourses(forceRemote))
{
Debug.WriteLine("[getAllDeadlines] Remote " + course.name);
var id = course.id;
List <Deadline> __deadlines;
if (course.isNew)
{
__deadlines = await Remote.getRemoteHomeworkListNew(id);
}
else
{
__deadlines = await Remote.getRemoteHomeworkList(id);
}
_deadlines = _deadlines.Concat(__deadlines).ToList();
}
deadlines = _deadlines;
writeCache(DEADLINES_FILENAME, JSON.stringify(deadlines));
Debug.WriteLine("[getAllDeadlines] Returning remote");
return(_deadlines);
}
public static async Task <Timetable> getTimetable(bool forceRemote = false)
{
if (isDemo())
{
var table = new Timetable();
var start = DateTime.Now.AddDays(-20);
while (start.DayOfWeek != DayOfWeek.Monday)
{
start = start.AddDays(-1);
}
for (var i = 0; i < 10; i++)
{
table.Add(new Event {
nr = "形式语言与自动机",
dd = "六教 6A301",
nq = start.AddDays(i * 7 + 2).ToString("yyyy-MM-dd"),
kssj = "08:00",
jssj = "09:35"
});
table.Add(new Event {
nr = "高级数据结构",
dd = "六教 6A301",
nq = start.AddDays(i * 7 + 2).ToString("yyyy-MM-dd"),
kssj = "09:50",
jssj = "11:25"
});
table.Add(new Event {
nr = "操作系统",
dd = "六教 6A303",
nq = start.AddDays(i * 7 + 3).ToString("yyyy-MM-dd"),
kssj = "09:50",
jssj = "11:25"
});
table.Add(new Event {
nr = "概率论与数理统计",
dd = "六教 6C102",
nq = start.AddDays(i * 7 + 4).ToString("yyyy-MM-dd"),
kssj = "15:20",
jssj = "16:55"
});
table.Add(new Event {
nr = "概率论与数理统计",
dd = "一教 104",
nq = start.AddDays(i * 7 + 1).ToString("yyyy-MM-dd"),
kssj = "13:30",
jssj = "15:05"
});
}
return(table);
}
//fetch from remote
var _remoteTimetable = await Remote.getRemoteTimetable();
Debug.WriteLine("[getTimetable] Returning remote");
return(_remoteTimetable);
}
