using System;
using System.Collections.Generic;
using System.Collections;
using System.Collections.ObjectModel;
using System.Threading.Tasks;
using System.Runtime.CompilerServices;
using System.Text.RegularExpressions;
using System.Text;
using System.Runtime.Serialization;

namespace Model
{
    /// <summary>
    /// A user is an entity with a _name, a surname, mail, profilePict and a list of priority.
    /// This user can login with an Id and a password
    /// </summary>
    [DataContract(Name = "user")]
    public class User : IEquatable<User>
    {
        #region Private Attributes

        [DataMember] private string name="";
        [DataMember] private string surname="";
        [DataMember] private string mail = "";
        [DataMember] private string picture = "";
        [DataMember] private int password ;
        [DataMember] private List<Priority> priorities;
        #endregion

        #region Properties

        /// <summary>
        /// Property to get Name of users and a setter 
        /// </summary>
        /// <exception cref="ArgumentException" >Setter have Exception which is trigger when Name is null</exception>
        public string Name
        {
            get { return name; }
            private set
            {
                if (string.IsNullOrWhiteSpace(value))
                {
                    throw new ArgumentException("Impossible d'avoir un champ Nom vide!");
                }
                name = value;
            }
        }

        /// <summary>
        /// Property to get Surname of users and a setter 
        /// </summary>
        /// <exception cref="ArgumentException" >Setter have Exception which is trigger when Surname is null</exception>
        public string Surname
        {
            get { return surname; }
            private set
            {
                if (string.IsNullOrWhiteSpace(value))
                {
                    throw new ArgumentException("Impossible d'avoir un champ Prénom vide!");
                }
                surname = value;
            }
        }

        /// <summary>
        /// Property to get mail of users and a setter 
        /// </summary>
        /// <exception cref="ArgumentException" >User's mail will serve to log the user. So there's no setter, just an init. User will enter one time his email at his
        /// account creation.</exception>
        public string Mail
        {
            get { return mail; }
            private init
            {
                if (string.IsNullOrWhiteSpace(value))
                {
                    throw new ArgumentException("Impossible d'avoir un champ Email vide!");
                }
                mail = value;
            }
        }

       public int Password
        {
            get =>  password; 
            set => password = value;
            
        }


        /// <summary>
        /// For now, we define the ProfilPict as a string which is "PhotoParDefaut"
        /// when the value is null.
        /// </summary>
        public string ProfilPict
        {
            get => picture;
            set => picture = value;
          
        }

        /// <summary>
        /// This is the list of priorities specific tu the user. This list is initiate
        /// by default. User could change it at will.
        /// </summary>
        
        public List<Priority> Priorities
        {
            get => priorities;
            set=> priorities = value;
        }

        public override bool Equals(object? other)
        {
            if (other == null) return false;
            if (other == this) return true;
            return Equals(other);
        }

        public bool Equals(User? other)
        {
            if (other == null) return false;
            return Name.Equals(other.Name) && Surname.Equals(other.Surname) && Mail.Equals(other.Mail);
        }

        public override int GetHashCode()
        {
            throw new NotImplementedException();
        }

        #endregion


        #region Constructors

        /// <summary>
        /// Construtors of user.
        /// </summary>
        /// <param _name="name">The _name of the user</param>
        /// <param _name="surname">The surname of the user</param>
        /// <param _name="mail">The user needs an email to login. </param>
        public User(string name, string surname, string mail, int password)
        {
            Name = name;
            Surname = surname;
            Mail = mail;
            Password = password;
            priorities = new List<Priority> {
                Priority.Gourmet,
                Priority.Economic,
                Priority.Fast,
                Priority.Light,
                Priority.Easy};
            ProfilPict = picture;

        }

    

        #endregion


    }
}