using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using AyCode.Database.DbContexts;
using AyCode.Database.DbContexts.Users;
using AyCode.Entities.Users;
using AyCode.Interfaces.Users;
using Microsoft.EntityFrameworkCore;
using AyCode.Database.Extensions;
using AyCode.Core.Consts;
using AyCode.Database.DbSets.Users;
using AyCode.Interfaces.Addresses;
using AyCode.Interfaces.Profiles;
using AyCode.Interfaces.ServiceProviders;

namespace AyCode.Database.DataLayers.Users
{
    public abstract class AcUserDalBase<TDbContext, TUser, TProfile, TUserToken, TServiceProvider, TUserToServiceProvider, TProfileAddress> : AcDalBase<TDbContext>
        where TDbContext : AcDbContextBase, IAcUserDbContextBase<TUser, TProfile, TUserToken, TServiceProvider, TUserToServiceProvider, TProfileAddress> 
        where TUser : class, IAcUser<TProfile, TServiceProvider, TUserToServiceProvider, TProfileAddress>
        where TProfile : class, IAcProfile<TProfileAddress>
        where TUserToken : class, IAcUserTokenBase
        where TServiceProvider : class, IAcServiceProviderBase
        where TUserToServiceProvider : class, IAcUserToServiceProviderBase
        where TProfileAddress : class, IAcAddress
    {
        public TUser? GetUserById(Guid userId) => Session(x => x.GetUserById(userId));
        public Task<TUser?> GetUserByIdAsync(Guid userId) => SessionAsync(x => x.GetUserById(userId));

        public TUser? GetUserByEmail(string email) => Session(x => x.GetUserByEmail(email));
        public Task<TUser?> GetUserByEmailAsync(string email) => SessionAsync(x => x.GetUserByEmail(email));

        //public UserToken CreateUserToken(Guid userId, string verificationToken)
        //{
        //    UserToken userToken = null;
        //    Transaction(ctx =>
        //        {
        //            userToken = ctx.CreateUserToken(userId, verificationToken);
        //            return userToken != null;
        //        }
        //    );

        //    return userToken;
        //}

        //public UserToken UpdateUserTokenSent(Guid userId, string verificationToken, DateTime tokenSentUtc)
        //{
        //    UserToken userToken = null;
        //    Transaction(ctx =>
        //        {
        //            userToken = ctx.UpdateUserTokenSent(userId, verificationToken, tokenSentUtc);
        //            return userToken != null;
        //        }
        //    );

        //    return userToken;
        //}

        //public UserToken GetActiveUserToken(Guid userId)
        //    => Session(ctx => ctx.GetActiveUserToken(userId));

        //public UserToken GetUserToken(Guid userId, string verificationToken)
        //    => Session(ctx => ctx.GetUserToken(userId, verificationToken));

        //public bool IsValidToken(Guid userId, string verificationToken)
        //    => Transaction(ctx => ctx.IsValidToken(userId, verificationToken));

        //public bool IsValidToken(string email, string verificationToken)
        //{
        //    return Transaction(ctx =>
        //    {
        //        var user = ctx.GetUserByEmail(email);

        //        return user != null && ctx.IsValidToken(user.Id, verificationToken);
        //    });
        //}

        //public void DeactivateTokens(Guid userId)
        //{
        //    Transaction(ctx =>
        //    {
        //        ctx.DeactivateTokens(userId);
        //        return true;
        //    });
        //}
        //public string GetValidVerificationToken(UserDal userDal, Guid userId, out UserToken userToken)
        //{
        //    string verificationToken;
        //    userToken = userDal.GetActiveUserToken(userId);

        //    if (userToken == null)
        //    {
        //        verificationToken = AntGenerator.NewToken();
        //        userToken = userDal.CreateUserToken(userId, verificationToken);
        //    }
        //    else verificationToken = userToken.Token;

        //    return verificationToken;
        //}

        public AcErrorCode GetUserForEmailValidation(string email, Func<TUser?, AcErrorCode, AcErrorCode> callback)
        {
            TUser? user = null;
            var errorCodes = AcErrorCode.Unset;

            Transaction(ctx =>
            {
                var lowerEmail= email.ToLower();

                user = ctx.Users.FirstOrDefault(x => x.EmailAddress == lowerEmail && x.EmailConfirmed);

                if (user == null)
                {
                    errorCodes = AcErrorCode.UserNameNotFound;
                    return false;
                }

                //user.Profile = ctx.Profiles.FirstOrDefault(x => x.OwnerId == user.Id);

                //if (!ctx.IsUserConsentsAccepted(user.Id)) errorCodes = AcErrorCode.ConsentNotAccepted;

                return true;
            });

            //if (user != null) 

            return callback(user, errorCodes);
        }
    }
}