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;

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 a Id and password
    /// </summary>
    public class User : IEquatable<User>
    {
        #region Private Attributes

        private string name="";
        private string surname="";
        private string mail = "";
        private string picture = "";
        private string password = "";
        //private string defaultUserSavePath = "";
        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;
            }
        }

        ///<summary>
        /// Property to initiate password, change it, and 
        /// </summary>
        public string Password
        {
            get { return 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 bool Equals(User other)
        {
            return Name.Equals(other.Name) && Surname.Equals(other.Surname) && Mail.Equals(other.Mail);
        }


        #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


    }
}