namespace IOL.GreatOffice.Api.Endpoints.V1.Entries;

public class UpdateEntryRoute : RouteBaseSync.WithRequest<TimeEntry.TimeEntryDto>.WithActionResult<TimeEntry.TimeEntryDto>
{
	private readonly AppDbContext _context;

	public UpdateEntryRoute(AppDbContext context) {
		_context = context;
	}

	/// <summary>
	/// Update a time entry.
	/// </summary>
	/// <param name="timeEntryTimeEntryDto"></param>
	/// <returns></returns>
	[ApiVersion(ApiSpecV1.VERSION_STRING)]
	[BasicAuthentication(AppConstants.TOKEN_ALLOW_UPDATE)]
	[HttpPost("~/v{version:apiVersion}/entries/update")]
	[ProducesResponseType(404, Type = typeof(ErrorResult))]
	[ProducesResponseType(200, Type = typeof(TimeEntry.TimeEntryDto))]
	public override ActionResult<TimeEntry.TimeEntryDto> Handle(TimeEntry.TimeEntryDto timeEntryTimeEntryDto) {
		var entry = _context.TimeEntries
							.Where(c => c.UserId == LoggedInUser.Id)
							.Include(c => c.Labels)
							.SingleOrDefault(c => c.Id == timeEntryTimeEntryDto.Id);

		if (entry == default) {
			return NotFound();
		}

		var category = _context.TimeCategories
							   .Where(c => c.UserId == LoggedInUser.Id)
							   .SingleOrDefault(c => c.Id == timeEntryTimeEntryDto.Category.Id);
		if (category == default) {
			return NotFound(new ErrorResult("Not found", $"Could not find category {timeEntryTimeEntryDto.Category.Name}"));
		}

		entry.Start = timeEntryTimeEntryDto.Start.ToUniversalTime();
		entry.Stop = timeEntryTimeEntryDto.Stop.ToUniversalTime();
		entry.Description = timeEntryTimeEntryDto.Description;
		entry.Category = category;

		if (timeEntryTimeEntryDto.Labels?.Count > 0) {
			var labels = new List<TimeLabel>();

			foreach (var labelDto in timeEntryTimeEntryDto.Labels) {
				var label = _context.TimeLabels
									.Where(c => c.UserId == LoggedInUser.Id)
									.SingleOrDefault(c => c.Id == labelDto.Id);

				if (label == default) {
					continue;
				}

				labels.Add(label);
			}

			entry.Labels = labels;
		} else {
			entry.Labels = default;
		}

		_context.SaveChanges();
		return Ok(entry.AsDto);
	}
}