using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Model
{
    /// <summary>
    /// Define a step of the preparation of a recipe.
    /// </summary>
    public class PreparationStep : IEquatable<PreparationStep>
    {
        #region Attributes
        private string? _description;
        #endregion

        #region Properties
        /// <summary>
        /// The order of this step in the preparation of the meal.
        /// </summary>
        public int Order { get; init; }

        /// <summary>
        /// The description of the task the user need to do for this step of the preparation. <br/>
        /// Set to "No description." when the value passed is null, empty or contain white spaces.
        /// </summary>
        public string? Description
        {
            get => _description;
            set
            {
                if (string.IsNullOrWhiteSpace(value))
                    _description = "No description.";
                else
                    _description = value;
            }
        }
        #endregion

        #region Constructors
        /// <summary>
        /// Construct a new step of preparation.
        /// </summary>
        /// <param name="order">The number of the order in preparation</param>
        /// <param name="description">The description of the task</param>
        public PreparationStep(int order, string? description)
        {
            Order = order;
            Description = description;
        }
        #endregion

        #region Methods
        public bool Equals(PreparationStep? other)
        {
            return Order.Equals(other.Order) && Description.Equals(other.Description);
        }

        public override string ToString()
        {
            return $"{Order}- {Description}";
        }
        #endregion
    }
}