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

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

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

	/// <summary>
	/// Create a time entry.
	/// </summary>
	/// <param name="timeEntryTimeEntryDto"></param>
	/// <returns></returns>
	[ApiVersion(ApiSpecV1.VERSION_STRING)]
	[BasicAuthentication(AppConstants.TOKEN_ALLOW_CREATE)]
	[ProducesResponseType(200)]
	[ProducesResponseType(400, Type = typeof(ErrorResult))]
	[ProducesResponseType(404, Type = typeof(ErrorResult))]
	[HttpPost("~/v{version:apiVersion}/entries/create")]
	public override ActionResult<TimeEntry.TimeEntryDto> Handle(TimeEntry.TimeEntryDto timeEntryTimeEntryDto) {
		if (timeEntryTimeEntryDto.Stop == default) {
			return BadRequest(new ErrorResult("Invalid form", "A stop date is required"));
		}

		if (timeEntryTimeEntryDto.Start == default) {
			return BadRequest(new ErrorResult("Invalid form", "A start date is required"));
		}

		if (timeEntryTimeEntryDto.Category == default) {
			return BadRequest(new ErrorResult("Invalid form", "A category is required"));
		}

		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}"));
		}

		var entry = new TimeEntry(LoggedInUser.Id) {
				Category = category,
				Start = timeEntryTimeEntryDto.Start.ToUniversalTime(),
				Stop = timeEntryTimeEntryDto.Stop.ToUniversalTime(),
				Description = timeEntryTimeEntryDto.Description,
		};

		if (timeEntryTimeEntryDto.Labels?.Count > 0) {
			var labels = _context.TimeLabels
								 .Where(c => c.UserId == LoggedInUser.Id)
								 .Where(c => timeEntryTimeEntryDto.Labels.Select(p => p.Id).Contains(c.Id))
								 .ToList();
			if (labels.Count != timeEntryTimeEntryDto.Labels.Count) {
				return NotFound(new ErrorResult("Not found", "Could not find all of the specified labels"));
			}

			entry.Labels = labels;
		}

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