using System;
using System.Collections.Generic;
using System.Collections;
using System.Collections.ObjectModel;
using System.Threading.Tasks;
using System.Runtime.CompilerServices;

namespace MCTGLib
{
    /// <summary>
    /// A user is an entity with a name, a surname, mail, profilePict and a list of priority.
    /// This user can login with a Id and password
    /// </summary>
    public class User 
    {
        #region Private Attributes

        private string name;
        private string surname;
        private string mail;

        #endregion

        #region Properties

        private string picture;
        /// <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>
        /// Property to get Name of users and a setter 
        /// </summary>
        /// <exception cref="ArgumentNullException" >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 ArgumentNullException("Il y a une erreur de Nom d'utilisateur!");
                }
                name = value;
            }
        }
        /// <summary>
        /// Property to get Surname of users and a setter 
        /// </summary>
        /// <exception cref="ArgumentNullException" >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 ArgumentNullException("Il y a une erreur de Prénom d'utilisateur.");
                }
                surname = value;
            }
        }
        /// <summary>
        /// Property to get mail of users and a setter 
        /// </summary>
        /// <exception cref="ArgumentNullException" >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; }
            init
            {
                if (string.IsNullOrWhiteSpace(value))
                {
                    throw new ArgumentNullException("Il y a une erreur de Mail d'utilisateur.");
                }
                mail = value;
            }
        }


        private List<Priority> priorities;
        public List<Priority> Priorities
        {
            get => priorities;
            set=> priorities = value;
        }


        #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)
        {
            Name = name;
            Surname = surname;
            Mail = mail;
            priorities = new List<Priority> {
                Priority.Gourmet,
                Priority.Economic,
                Priority.Fast,
                Priority.Light,
                Priority.Easy};
            ProfilPict = picture;

        }

        #endregion


    }
}