using iiie.Authentication.Business.JWT;

namespace iiie.Authentication.DBO
{
    /// <summary>
    /// All editable user fields
    /// </summary>
    public class UserEdit
    {
        /// <summary>
        /// When getting / setting from / to database: salt and password hash
        /// When getting from controller: user plain text password
        /// When returning from controller: empty or user token
        /// </summary>
        public object Private { get; private set; }

        /// <summary>
        /// Application specific user role(s)
        /// </summary>
        public int Role { get; set; }

        /// <summary>
        /// Optionnal user first name
        /// </summary>
        public string Firstname { get; set; }

        /// <summary>
        /// Optionnal user last name
        /// </summary>
        public string Lastname { get; set; }

        /// <summary>
        /// Get the user password salt from Private
        /// </summary>
        /// <returns>The salt</returns>
        public string GetSalt()
        {
            return ((string[]) Private)[0];
        }

        /// <summary>
        /// Set a value in the Private stirng array
        /// </summary>
        /// <param name="text">The value to be set</param>
        /// <param name="pos">The position in the array</param>
        private void SetArrayText(string text, int pos)
        {
            if (Private == null || Private.GetType() != typeof(string[]))
                Private = new string[2];
            ((string[]) Private)[pos] = text;
        }

        /// <summary>
        /// Set the user password salt to Private
        /// </summary>
        /// <param name="salt">The salt</param>
        public void SetSalt(string salt)
        {
            SetArrayText(salt, 0);
        }

        /// <summary>
        /// Get the password hash from Private
        /// </summary>
        /// <returns>The hash</returns>
        public string GetHash()
        {
            return ((string[])Private)[1];
        }

        /// <summary>
        /// Compute and set the password hash to Private
        /// </summary>
        /// <param name="password">The plain text password</param>
        public void SetPlainTextHash(string password)
        {
            SetArrayText(PasswordHash.CreateHash(password), 1);
        }

        /// <summary>
        /// Set the password hash to Private
        /// </summary>
        /// <param name="hash">The password hash</param>
        public void SetHash(string hash)
        {
            SetArrayText(hash, 1);
        }

        /// <summary>
        /// Get the Private as string
        /// </summary>
        /// <returns>The string data</returns>
        public string GetPlainTextPrivate()
        {
            return (string) Private;
        }

        /// <summary>
        /// Compute and set the token to Private
        /// </summary>
        /// <param name="username">The user username</param>
        /// <param name="salt">The use rpassword salt</param>
        public void SetPlainTextToken(string username, string salt)
        {
            Private = TokenManager.GetToken(username, salt);
        }
    }
}