public IActionResult Get([FromQuery] SuggestionsQueryParams parameters)
{
if (ModelState.IsValid)
{
return(Ok(new { query = parameters, suggestions = _suggestionLogic.GetSuggestions(parameters) }));
}
return(BadRequest());
}
/// <summary>
/// Returns a suggestions-list with all bookable times and dates
/// </summary>
public IList <SuggestionDto> GetSuggestions(SuggestionsQueryParams parameters)
{
var fromDate = DateTimeOffset.Parse($"{parameters.FromDate} {parameters.OfficehoursStart}");
var toDate = DateTimeOffset.Parse($"{parameters.ToDate} {parameters.OfficehoursEnd}");
var desiredSuggestions = InitializeSuggestions(parameters, fromDate, toDate);
var availableSuggestions = GetAvailableSuggestions(desiredSuggestions, parameters, fromDate, toDate);
return(availableSuggestions);
}
/// <summary>
/// Creates and returns a list with all desired time-bookings according to the inputs made by the user
/// </summary>
private List <SuggestionDto> InitializeSuggestions(SuggestionsQueryParams parameters, DateTimeOffset fromDate, DateTimeOffset toDate)
{
var suggestions = new List <SuggestionDto>();
while (fromDate <= toDate)
{
var suggestion = new SuggestionDto {
Date = fromDate.GetShortDate()
};
var officeHoursStart = DateTimeOffset.Parse($"{fromDate.GetShortDate()} {parameters.OfficehoursStart}");
var officeHoursEnds = DateTimeOffset.Parse($"{fromDate.GetShortDate()} {parameters.OfficehoursEnd}").AddMinutes(-parameters.MeetingLength);
while (officeHoursStart <= officeHoursEnds)
{
suggestion.StartTimes.Add(officeHoursStart.GetTime());
officeHoursStart = officeHoursStart.AddMinutes(AppointmentTimeInterval);
}
suggestions.Add(suggestion);
fromDate = fromDate.AddDays(1);
}
return(suggestions);
}
/// <summary>
/// Returns a list with all the times which are available for booking
/// </summary>
private List <SuggestionDto> GetAvailableSuggestions(List <SuggestionDto> suggestions,
SuggestionsQueryParams parameters,
DateTimeOffset fromDate,
DateTimeOffset toDate)
{
var busyTimesForEmployees = _busyTimeRepository.GetBusyTimes(parameters.Employees)
.Where(x => x.StartTime >= fromDate && x.EndTime <= toDate)
.OrderBy(x => x.StartTime)
.ToList();
var busyTimes = GetBusyTimesOrderedList(busyTimesForEmployees);
foreach (var suggestion in suggestions)
{
// if there is no busy times on this particular date then skip it, i.e. keep desired times as is
if (!busyTimesForEmployees.Any(x => x.StartTime.GetShortDate() == suggestion.Date))
{
continue;
}
var availableStartTimes = new List <string>();
var officeHoursEnds = DateTimeOffset.Parse($"{suggestion.Date} {parameters.OfficehoursEnd}");
foreach (var startTime in suggestion.StartTimes)
{
var startTimeDate = DateTimeOffset.Parse($"{suggestion.Date} {startTime}");
var isAvailable = false;
for (int i = 0; i < busyTimes.Count; i++)
{
// Check if current startTime, while considering meetingLength, is available when it's before earliest busyTime.
if (i == 0 && busyTimes[i] >= startTimeDate.AddMinutes(parameters.MeetingLength))
{
isAvailable = true;
break;
}
// On the last busyTime we want to check if it's still within the office hour
// while taking into consideration the meetinglength
if (i == busyTimes.Count - 1)
{
if (busyTimes[i].AddMinutes(parameters.MeetingLength) <= officeHoursEnds &&
startTimeDate >= busyTimes[i])
{
isAvailable = true;
break;
}
}
// Check if we have available time between the current and the next busyTimes
else if ((busyTimes[i + 1] - busyTimes[i]).TotalMinutes != BusyTimeIdentifier &&
startTimeDate >= busyTimes[i] &&
startTimeDate.AddMinutes(parameters.MeetingLength) <= busyTimes[i + 1])
{
isAvailable = true;
break;
}
}
if (isAvailable)
{
availableStartTimes.Add(startTimeDate.GetTime());
}
}
suggestion.StartTimes = availableStartTimes;
}
return(suggestions);
}
