UserStore.EmailStore.cs

using Microsoft.AspNet.Identity;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Claims;
using System.Threading.Tasks;

namespace AspNet.Identity.MySQL
{
    public partial class UserStore<TUser, TRole> : IUserEmailStore<TUser>
    {
        /// <summary>
        /// Set email on user
        /// </summary>
        /// <param name="user"></param>
        /// <param name="email"></param>
        /// <returns></returns>
        public Task SetEmailAsync(TUser user, string email)
        {
            user.Email = email;
            userTable.Update(user);

            return Task.FromResult(0);

        }

        /// <summary>
        /// Get email from user
        /// </summary>
        /// <param name="user"></param>
        /// <returns></returns>
        public Task<string> GetEmailAsync(TUser user)
        {
            return Task.FromResult(user.Email);
        }

        /// <summary>
        /// Get if user email is confirmed
        /// </summary>
        /// <param name="user"></param>
        /// <returns></returns>
        public Task<bool> GetEmailConfirmedAsync(TUser user)
        {
            return Task.FromResult(user.EmailConfirmed);
        }

        /// <summary>
        /// Set when user email is confirmed
        /// </summary>
        /// <param name="user"></param>
        /// <param name="confirmed"></param>
        /// <returns></returns>
        public Task SetEmailConfirmedAsync(TUser user, bool confirmed)
        {
            user.EmailConfirmed = confirmed;
            userTable.Update(user);

            return Task.FromResult(0);
        }

        /// <summary>
        /// Get user by email
        /// </summary>
        /// <param name="email"></param>
        /// <returns></returns>
        public Task<TUser> FindByEmailAsync(string email)
        {
            if (String.IsNullOrEmpty(email))
            {
                throw new ArgumentNullException("email");
            }

            List<TUser> result = userTable.GetUserByEmail(email) as List<TUser>;
            // Should I throw if > 1 user?
            if (result != null && result.Count == 1)
            {
                return Task.FromResult<TUser>(result[0]);
            }

            return Task.FromResult<TUser>(null);
        }
    }
}