using Common.Models.Auth;
using Common.Models.Auth.CompanySide;
using Common.Models.Auth.UserSide;
using Hushian.Application.Constants;
using Hushian.Application.Contracts.Persistence;
using Hushian.Application.Models;
using Hushian.Domain.Entites;
using Microsoft.AspNetCore.Identity;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Options;
using Microsoft.IdentityModel.Tokens;
using System;
using System.Collections.Generic;
using System.IdentityModel.Tokens.Jwt;
using System.Linq;
using System.Security.Claims;
using System.Text;
using System.Threading.Tasks;

namespace Hushian.Application.Services
{
    public class AuthService
    {
        private readonly JwtSettings _jwtSettings;
        private readonly IGenericRepository<Company> _CompanyRepository;
        private readonly IGenericRepository<User> _UserRepository;
        private readonly IGenericRepository<Exper> _ExperRepository;
        private readonly VerificationService _verificationService;
        public AuthService(IOptions<JwtSettings> jwtSettings, IGenericRepository<Company> companyRepository, IGenericRepository<User> userRepository, IGenericRepository<Exper> experRepository, VerificationService verificationService)
        {
            _jwtSettings = jwtSettings.Value;
            _CompanyRepository = companyRepository;
            _UserRepository = userRepository;
            _ExperRepository = experRepository;
            _verificationService = verificationService;
        }
        public async Task<ResponseBase<AuthResponse>> AuthenticationFromCompanySide
            (AuthRequestFromCompanySide auth)
        {
            ResponseBase<AuthResponse> Response = new();
            if (auth.Username.StartsWith("09"))
            {
                // in Company Search
               var Company= await _CompanyRepository.Get().FirstOrDefaultAsync(f=>f.Mobile== auth.Username && f.Password==auth.Password.GetHash());
                if (Company==null)
                {
                    Response.Errors.Add("کاربری یافت نشد");
                }
                else
                {
                    Response.Success = true;
                    Response.Value = new AuthResponse()
                    {
                        Fullname = Company.FullName,
                        Id = Company.ID,
                        MobileOrUserName = Company.Mobile,
                        Token = new JwtSecurityTokenHandler().WriteToken(await GenerateToken(Company.Mobile, Company.ID))
                    };
                }
            }
            else
            {
                var exper = await _ExperRepository.Get().FirstOrDefaultAsync(f => f.UserName == auth.Username && f.Password == auth.Password.GetHash());
                if (exper == null)
                {
                    Response.Errors.Add("کاربری یافت نشد");
                }
                else
                {
                    Response.Success = true;
                    Response.Value = new AuthResponse()
                    {
                        Fullname = exper.FullName,
                        Id = exper.ID,
                        MobileOrUserName = exper.UserName,
                        Token = new JwtSecurityTokenHandler().WriteToken(await GenerateToken(exper.UserName, exper.ID))
                    };
                }
            }
            return Response;
        }
        public async Task<ResponseBase<int>> AuthenticationFromUserSide
            (AuthRequestFromUserSide auth)
        {
            ResponseBase<int> Response = new();
            if (!await _UserRepository.Get().AnyAsync(a => a.Mobile == auth.Mobile))
            {
                if (!await _UserRepository.ADDBool(new User() { Mobile = auth.Mobile, FullName = auth.FullName }))
                {
                    Response.Errors.Add("خطا در کاربری");
                }
            }

            if (Response.Errors.Count==0)
            {
           
                Response.Value = await _verificationService.GenerateCodeForLoginUser(auth.Mobile);
                Response.Success = true;
            }
            return Response;
        }

        public async Task<JwtSecurityToken> GenerateToken(string UserName, int userId)
        {


            var claims = new[]
            {
                new Claim(JwtRegisteredClaimNames.Sub,UserName),
                new Claim(CustomClaimTypes.Uid,userId.ToString())
            };


            var symmetricSecurityKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(_jwtSettings.Key));
            var signingCredentials = new SigningCredentials(symmetricSecurityKey, SecurityAlgorithms.HmacSha256);

            var jwtSecurityToken = new JwtSecurityToken(
                issuer: _jwtSettings.Issuer,
                audience: _jwtSettings.Audience,
                claims: claims,
                expires: DateTime.UtcNow.AddMinutes(_jwtSettings.DurationInMinutes),
            signingCredentials: signingCredentials);

            //user.Token = new JwtSecurityTokenHandler().WriteToken(jwtSecurityToken);
            //var resultupdateuser = await _userManager.UpdateAsync(user);

            return jwtSecurityToken;
        }
    }
}