using System;
using System.ComponentModel;
using System.Diagnostics.CodeAnalysis;

namespace Model
{
    /// <summary>
    /// Define the base structure of any Items.<br/>
    /// An Item can be identifed and have a short description. It can also be displayed.
    /// </summary>
    public abstract class BaseItem : IDisplayable, IEquatable<BaseItem>
    {
        #region Private Attributes

        /// <summary>
        /// The identifier of an Item.<br/>
        /// The first number correspond to the typs of the Item.
        /// </summary>
        virtual public uint Id
        {
            get => _id;
            init => _id = value;
        }
        protected uint _id;

        #endregion

        #region Public Properties

        /// <summary>
        /// A short description of the Item. Useful to know what this Item stand for.
        /// </summary>
        public string Description { get; set; }

        #endregion

        #region Constructors

        protected BaseItem(uint id, string description="Any Item.")
        {
            Id = id; Description = description;
        }

        #endregion

        #region Public Methods

        public override string ToString()
        {
            return
                $"[ Class -BaseItem- ]\n\n" +
                $"\t.Id  -  {Id}\n" +
                $"\t.Description  -  {Description}\n" +
                $"______\n\n";
        }

        #region IDisplayable Implementation

        public void DisplayId()
        {
            Console.WriteLine($".Id  -  {Id}");
        }

        public void DisplayDescription()
        {
            Console.WriteLine($".Description  -  {Description}");
        }

        public void DisplayItem()
        {
            Console.WriteLine(this.ToString());
        }

        #endregion

        #region IEquatable<BaseItem> implementation

        public int GetHashCode([DisallowNull] BaseItem obj)
        {
            return obj.Id.GetHashCode() + obj.Description.GetHashCode();
        }

        public bool Equals(BaseItem? other)
        {
            if (other == null) return false;
            return (this.Id == other.Id) && (this.Description == other.Description);
        }

        #endregion

        #endregion
    }
}