private static List <string> FindNewAvailableSlots(InstructorSlots oldInstructorSlots, InstructorSlots newInstructorSlots)
{
if (newInstructorSlots == null)
{
throw new ArgumentNullException("newInstructorSlots");
}
if (oldInstructorSlots == null)
{
oldInstructorSlots = new InstructorSlots {
InstructorInitials = newInstructorSlots.InstructorInitials, Slots = new List <Slot>()
};
}
if (oldInstructorSlots.InstructorInitials != newInstructorSlots.InstructorInitials)
{
throw new InstructorScanException($"Old instructor slot initials '{oldInstructorSlots.InstructorInitials}' does not match new instructor slot initials '{newInstructorSlots.InstructorInitials}'");
}
var messages = new List <string>();
var newFeeSlots = newInstructorSlots.Slots.Where(s => s.Availability == AvailabilityNames.Free).ToList();
foreach (var newFreeSlot in newFeeSlots)
{
var matchedOldLSlot = oldInstructorSlots.Slots.SingleOrDefault(s => s.Time == newFreeSlot.Time);
if (matchedOldLSlot == null || (matchedOldLSlot.Availability != newFreeSlot.Availability))
{
messages.Add($"{newFreeSlot.Time} is available");
}
}
return(messages);
}
public async Task <CalendarDay> GetBookings(DateTime date, List <Instructor> instructors)
{
if (_httpClient == null)
{
await InitHttpClientAsync();
}
var bookingPageUrl = new Uri(_rootUrl, $"{_appSettings.BookingPage}?dt={date.ToString("dd/MM/yyyy")}");
var bookingPageResponse = await _httpClient.GetAsync(bookingPageUrl);
bookingPageResponse.EnsureSuccessStatusCode();
var bookingPageContents = await bookingPageResponse.Content.ReadAsStringAsync();
var bookingPageParser = new HtmlDocument();
bookingPageParser.LoadHtml(bookingPageContents);
var tableBookings = bookingPageParser.DocumentNode.SelectSingleNode("//table[@id='tblBookings']");
if (tableBookings == null)
{
throw new InstructorScanException("Could not find table with an id of 'tblBookings'");
}
var times = new List <string>();
var timesTDNodes = tableBookings.SelectNodes(".//td[@class='TimeHeaderHalf']");
foreach (var td in timesTDNodes)
{
var time = td.GetDirectInnerText();
times.Add(time);
times.Add($"{time}:30");
}
//- Find row where tr / td innerText = 'Instructor Name'
var instructorSlotsList = new List <InstructorSlots>();
foreach (var instctr in instructors)
{
var instructorSlots = new InstructorSlots
{
InstructorInitials = instctr.Initials,
Slots = new List <Slot>()
};
var instructorRowNode = tableBookings.SelectSingleNode($".//tr[td='{instctr.Name}']");
if (instructorRowNode != null)
{
_logger.LogInformation("Found instructor row");
var originalBookingTds = instructorRowNode.SelectNodes(".//td[not(@class='HeaderCellAc')]");
var bookings = new List <string>();
foreach (var tdNode in originalBookingTds)
{
var status = BookingStatus(tdNode);
var statusCount = GetColSpanValue(tdNode);
for (var i = 0; i < statusCount; i++)
{
bookings.Add(status);
}
}
if (times.Count != bookings.Count)
{
throw new InstructorScanException("Eeek!! Time slot count doesn't match bookings count!");
}
for (var i = 0; i < bookings.Count; i++)
{
instructorSlots.Slots.Add(new Slot {
Availability = bookings[i], Time = times[i]
});
}
}
instructorSlotsList.Add(instructorSlots);
}
var calendarDay = new CalendarDay {
InstructorSlots = instructorSlotsList
};
calendarDay.SetDate(date);
return(calendarDay);
}