public IActionResult CancelReservation(CancelReservationModel model)
{
if (model == null || !ModelState.IsValid)
{
TempData["Message"] = "Dados de reserva de turno inválidos.";
return(RedirectToScheduleList());
}
var slot = db.ScheduleSlots
.Include(sl => sl.Students)
.Include(sl => sl.Schedule)
.FirstOrDefault(sl => sl.Id == model.SlotId.Value);
if (slot == null)
{
TempData["Message"] = "O turno especificado não existe.";
return(RedirectToScheduleDetails(model.ScheduleId.Value));
}
if (slot.Schedule.When < DateTime.Now.Date)
{
TempData["Message"] = "Este horário está fechado.";
return(RedirectToScheduleDetails(model.ScheduleId.Value));
}
var studentNumber = User.GetStudentNumber();
if (slot.ReservedBy_Id != studentNumber)
{
TempData["Message"] = "Só pode cancelar turnos reservados por si.";
return(RedirectToScheduleDetails(model.ScheduleId.Value));
}
slot.ReservedBy_Id = null;
slot.ReservedAt = null;
slot.Students.Clear();
db.ScheduleSlots.Update(slot);
db.SaveChanges();
return(RedirectToScheduleDetails(model.ScheduleId.Value));
}
public IActionResult Create(ScheduleCreateModel model)
{
if (model == null || !ModelState.IsValid)
{
return(View(model));
}
var students = new List <Schedule_Student>();
var tempFile = System.IO.Path.GetTempFileName();
var when = model.When.Value.Date;
var whenAsString = when.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture);
var schedule = new Schedule
{
CreatedBy = User.Identity.Name,
Description = model.Description,
Location = model.Location,
MaxStudentsPerSlot = model.MaxStudentsPerSlot.Value,
Name = model.Name,
When = when,
Students = students,
Slots = model.Slots
.OrderBy(s => s.StartsAt)
.Select(s => new ScheduleSlot
{
IsAvailable = s.Available,
StartsAt = DateTime.ParseExact($"{whenAsString} {s.StartsAt}", "yyyy-MM-dd HH:mm", CultureInfo.CurrentCulture, DateTimeStyles.AssumeLocal),
EndsAt = DateTime.ParseExact($"{whenAsString} {s.EndsAt}", "yyyy-MM-dd HH:mm", CultureInfo.CurrentCulture, DateTimeStyles.AssumeLocal),
Description = s.Description,
})
.ToList()
};
// Read students.
using (var reader = ExcelReaderFactory.CreateReader(model.StudentsUpload.OpenReadStream()))
{
// https://github.com/ExcelDataReader/ExcelDataReader#asdataset-configuration-options
var dataSet = reader.AsDataSet(new ExcelDataSetConfiguration
{
FilterSheet = (tableReader, sheetIndex) => sheetIndex == 0,
ConfigureDataTable = (tableReader) => new ExcelDataTableConfiguration
{
UseHeaderRow = true,
FilterRow = (rowReader) => !string.IsNullOrWhiteSpace(rowReader.GetValue(0)?.ToString()),
FilterColumn = (rowReader, columnIndex) => columnIndex <= 12,
ReadHeaderRow = (rowReader) =>
{
// Only try to read the first 100 columns; bail otherwise as the file may be bad.
var rowIndex = 0;
while (rowIndex < 100 && string.IsNullOrWhiteSpace(rowReader.GetValue(0)?.ToString()))
{
rowReader.Read();
rowIndex += 1;
}
}
}
});
var table = dataSet.Tables[0];
if (!table.Columns.Contains("Aluno") || !table.Columns.Contains("Nome"))
{
ModelState.AddModelError(nameof(model.StudentsUpload), "O ficheiro Excel tem que conter uma coluna 'Aluno' e outra 'Nome'.");
return(View(model));
}
var studentsInExcel = table.Rows
.OfType <DataRow>()
.Select(row =>
{
var studentNumber = row["Aluno"].ToString().Trim();
var studentName = row["Nome"].ToString().Trim();
return(new Student {
StudentNumber = studentNumber, Name = studentName
});
})
// Remove empty rows
.Where(s => !string.IsNullOrWhiteSpace(s.Name) && !string.IsNullOrWhiteSpace(s.StudentNumber))
// Remove duplicates
.Distinct(new LambdaEqualityComparer <Student, string>(s => s.StudentNumber))
.ToList();
// Get the student numbers that are both in the db and the Excel spreadsheet.
// For those that aren't in the db (i.e., not in this variable), add them to the db.
var studentsInExcelAndDb = db.Students
.Where(s => studentsInExcel.Select(e => e.StudentNumber).ToList().Contains(s.StudentNumber))
.Select(s => s.StudentNumber)
.ToHashSet();
foreach (var inExcel in studentsInExcel)
{
var studentNumber = inExcel.StudentNumber;
if (!studentsInExcelAndDb.Contains(studentNumber))
{
db.Students.Add(new Student {
StudentNumber = studentNumber, Name = inExcel.Name
});
}
students.Add(new Schedule_Student
{
Student_Id = studentNumber,
Schedule = schedule
});
}
}
db.Schedules.Add(schedule);
db.SaveChanges();
return(RedirectToAction(nameof(Index)));
}