public async Task <IActionResult> Index(PhysicianSpecialization specialization, DateTime startDate, AppointmentType appointmentType)
{
var model = new AddAppointmentViewModel
{
FreeTerms = new List <Appointment>()
};
if (startDate < DateTime.Now)
{
return(View(model));
}
try
{
var builder = new StringBuilder("Appointments/free/?");
var query = HttpUtility.ParseQueryString(string.Empty);
query["specialization"] = specialization.ToString();
query["startDate"] = startDate.ToString("MM.dd.yyyy"); // little hack
query["type"] = appointmentType.ToString();
builder.Append(query.ToString());
model.FreeTerms = await _client.SendRequestAsync <List <Appointment> >(HttpMethod.Get, builder.ToString());
return(View(model));
}
catch (HttpRequestException)
{
ModelState.AddModelError("TryAgain", _localizer["TryAgain"]);
return(View(model));
}
}
public async Task <ActionResult <IEnumerable <Appointment> > > GetFreeTerms(
[FromQuery] PhysicianSpecialization specialization,
[FromQuery] DateTime startDate,
[FromQuery] AppointmentType type)
{
// Get all physicians with the required specialization
var physicians = await _context.Physicians
.Where(p => p.Specialization == specialization)
.ToListAsync();
// TODO: change this
// By default, search for free appointments in the 2 days span from the start date
TimeSpan defaultDateSpan = new TimeSpan(2, 0, 0, 0);
DateTime endDate = startDate.Add(defaultDateSpan);
// TODO: allow setting appointment span for each physician separately
TimeSpan defaultAppointmentTimeSpan = new TimeSpan(0, 30, 0);
var freeAppointments = new List <Appointment>();
foreach (var physician in physicians)
{
// TODO: allow setting working hours for each physician separately
// Get physician's appointments sorted by date
var appointments = await _context.Appointments
.Where(a => a.PhysicianId == physician.Id)
.Where(a => a.Time >= startDate)
.Where(a => a.Time <= endDate)
.OrderBy(a => a.Time)
.ToListAsync();
// iterate ovet days in selected timespan
for (DateTime day = startDate; day < endDate; day = day.AddDays(1))
{
// iterate over potential appointment hours in current day
for (DateTime appointmentTime = day.AddHours(8); appointmentTime < day.AddHours(16); appointmentTime += defaultAppointmentTimeSpan)
{
if (appointments.Count == 0)
{
// current appointmentTime is free
freeAppointments.Add(new Appointment
{
Physician = physician,
PhysicianId = physician.Id,
Time = appointmentTime,
Type = type
});
}
else
{
DateTime closestAppointmentTime = appointments.ElementAt(0).Time;
if (
(appointmentTime < closestAppointmentTime && appointmentTime + defaultAppointmentTimeSpan > closestAppointmentTime) ||
(appointmentTime >= closestAppointmentTime))
{
// current appointmentTime is taken
appointments.RemoveAt(0);
}
else
{
// current appointmentTime is free
freeAppointments.Add(new Appointment
{
Physician = physician,
PhysicianId = physician.Id,
Time = appointmentTime,
Type = type
});
}
}
}
}
}
return(freeAppointments);
}
