public String UpdateStudentChange(String sc_id, String org_tg_id, String s_id, String t_id, String thesis_state, String sc_allapproval, int accept)
{
tid = User.Identity.GetUserId();
TeacherHelper teacherHelper = new TeacherHelper();
//update teacher accpet according to allapprove
JObject update_change = teacherHelper.UpdateChange(sc_id, s_id, t_id, thesis_state, sc_allapproval, accept);
System.Diagnostics.Debug.Print((String)update_change["status"]);
/*check if all original teacher agree for change advisor*/
// if they all agree then add new pair
if (sc_allapproval.Equals("0") && teacherHelper.CheckOrgChange(sc_id) == 0)
{
// CheckAllApply get 0 means all student_apply is accepted
// then update student apply allapprove to 1
teacherHelper.UpdateStudentChangeApproval(sc_id);
}
else if (sc_allapproval.Equals("1") && teacherHelper.CheckNewChange(sc_id) == 0)
{
//remove original pair
teacherHelper.removePair(s_id);
//add new paired
teacherHelper.AddChangePair(sc_id, s_id);
//update student change history
teacherHelper.UpdateStudentChangeHistory(org_tg_id, state: 1); //state=1 means success
}
//todo - remove student_change - another query to check is all change checked
return(update_change["status"].ToString(Formatting.None));
}