using System;
using System.Linq;
using Luticate2.Auth.DataAccess.Models;
using Luticate2.Auth.Dbo.Users;
using Luticate2.Utils.DataAccess;
using Luticate2.Utils.Dbo.Result;
using Luticate2.Utils.Utils;
using Microsoft.EntityFrameworkCore;
using Newtonsoft.Json;
using Npgsql;

namespace Luticate2.Auth.DataAccess
{
    public class LuUsersDataAccess : LuEfCrudDataAccess<lu_users, LuUsersAddFullDbo, LuUsersFullDbo, LuUsersEditFullDbo, LuAuthDatabaseContext, string>
    {
        public LuUsersDataAccess(IServiceProvider serviceProvider) : base(serviceProvider)
        {
        }

        protected override DbSet<lu_users> GetTable(LuAuthDatabaseContext db)
        {
            return db.lu_users;
        }

        protected override lu_users GetModelFromTCreate(LuUsersAddFullDbo obj)
        {
            return new lu_users
            {
                authentication_source_id = obj.AuthenticationSourceId.ToGuid(),
                data = JsonConvert.SerializeObject(obj.Data),
                password = obj.Password,
                salt = obj.Salt,
                username = obj.Username
            };
        }

        protected override LuResult<T> HandleError<T>(Exception e)
        {
            if (e is DbUpdateException && e.InnerException is PostgresException)
            {
                var pge = (PostgresException) e.InnerException;
                if (pge.ConstraintName == "lu_users_authentication_source_id_username_key")
                {
                    return LuResult<T>.Error(LuStatus.InputError, e, "Username already exists");
                }
            }
            return null;
        }

        protected override void EditModelFromTUpdate(LuUsersEditFullDbo obj, lu_users model)
        {
            throw new NotImplementedException();//TODO
        }

        protected override LuUsersFullDbo GetDboFromModel(lu_users model)
        {
            return model.ToDbo();
        }

        public LuResult<LuUsersFullDbo> FindByUsername(string username)
        {
            return Execute((context, set) =>
            {
                var user = set.FirstOrDefault(users => users.username.ToLower() == username.ToLower())?.ToDbo();
                if (user != null)
                {
                    return LuResult<LuUsersFullDbo>.Ok(user);
                }
                return LuResult<LuUsersFullDbo>.Error(LuStatus.NotFound, $"username: {username}", "Username not found");
            });
        }
    }
}