using System;
using System.Web;
using Kreta.BusinessLogic.Classes.MobileApi.Common.Co;

namespace Kreta.Web.Areas.MobileApi.ModelConverter
{
    public static class MobileUserModelConverter
    {
        /// <summary>
        /// Try get mobile user from http context
        /// </summary>
        /// <param name="mobileUser">Mobile user</param>
        /// <returns>True if mobile user exists</returns>
        public static bool TryLoadFromHttpContext(out MobileUser mobileUser)
        {
            mobileUser = (MobileUser)HttpContext.Current?.Items?[nameof(MobileUser)];
            return mobileUser != null;
        }

        /// <summary>
        /// Try get mobile user from http context
        /// </summary>
        /// <param name="mobileUser">Mobile user</param>
        /// <returns>True if mobile user exists</returns>
        public static MobileUser GetFromHttpContext()
        {
            MobileUser user;

            if (!TryLoadFromHttpContext(out user))
            {
                throw new InvalidOperationException($"There is no existing mobile user in http context {nameof(MobileUser)}");
            }

            return user;
        }
    }
}