#nullable enable

#region

using System;
using System.ComponentModel.DataAnnotations;
using System.Diagnostics.CodeAnalysis;
using System.Text.RegularExpressions;
using website.Models.events;

#endregion

namespace website.Models {
	/// <summary>
	///   This method is used due to DateTime and TimeSpan
	///   being difficult to send in a post request.
	/// </summary>
	public class PostEvent {
		private string _date;
		private string? _time;
		public int? eventId { get; set; }
		[NotNull] public string? location { get; set; }

		/// <summary>
		///   YYYY/MM/DD
		/// </summary>
		[NotNull]
		[Required]
		public string date {
			get => _date;
			set {
				if (Utilities.verifyDate(value)) {
					_date = value;
					return;
				}

				throw new ArgumentException("Date in incorrect format or null");
			}
		}

		/// <summary>
		///   HH:MM:SS
		/// </summary>
		public string? time {
			get => _time;
			set {
				if (value == null) {
					_time = null;
					return;
				}

				if (Utilities.verifyTime(value)) ;
				_time = value;
			}
		}

		public string? color { get; set; }
		public string? textColor { get; set; }
		public string? imageUri { get; set; }
		public string? description { get; set; }

		public static Event postEventToEvent(PostEvent postEvent) {
			if (postEvent.time == null)
				return new Event {
					eventId = postEvent.eventId,
					location = postEvent.location,
					date = Utilities.stringDateToDateTime(postEvent.date),
					time = null
				};

			Match match = new Regex("^[0-9]{2}$").Match(postEvent.time);
			int hours = int.Parse(match.Value);
			int minutes = int.Parse(match.NextMatch().Value);
			int seconds = int.Parse(match.NextMatch().Value);

			return new Event {
				eventId = postEvent.eventId,
				location = postEvent.location,
				date = Utilities.stringDateToDateTime(postEvent.date),
				time = Utilities.stringTimeToTimeSpan(postEvent.time)
			};
		}
	}
}