using System;
using System.Collections.Generic;
using System.IdentityModel.Tokens.Jwt;
using System.Linq;
using System.Security.Claims;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.IdentityModel.Tokens;
using MyCore.Interfaces.DTO;
using MyCore.Interfaces.Models;
using MyCore.Service.Services;
using MyCore.Services;

namespace MyCore.Controllers
{
    [Authorize]
    [Route("api/token")]
    [ApiController]
    public class TokenController : ControllerBase
    {
        private TokensService _tokenService;
        private UserDatabaseService _userService;

        public TokenController(TokensService tokenService, UserDatabaseService userService)
        {
            _tokenService = tokenService;
            _userService = userService;
        }

        /// <summary>
        /// Connect user
        /// </summary>
        /// <param name="loginDTO">login info</param>  
        [ProducesResponseType(typeof(UserInfo), 200)]
        [ProducesResponseType(typeof(string), 401)]
        [ProducesResponseType(typeof(string), 500)]
        [AllowAnonymous]
        [HttpPost]
        public ActionResult<UserInfo> ConnectUser([FromBody] LoginDTO loginDTO)
        {
            try
            {
                UserInfo user = null;
                if (IsValidUserAndPasswordCombination(loginDTO.Email, loginDTO.Password))
                {
                    user = _userService.GetByEmail(loginDTO.Email);
                    user.Token = _tokenService.GenerateToken(loginDTO.Email).ToString();
                }

                if (user != null)
                {
                    return new OkObjectResult(user);
                }
                else {
                    throw new UnauthorizedAccessException("Bad credential");
                }
                
            }
            catch (UnauthorizedAccessException ex)
            {
                return new UnauthorizedObjectResult(ex.Message) {};
            }
            catch (Exception ex)
            {
                return new ObjectResult(ex.Message) { StatusCode = 500 };
            }
        }

        private bool IsValidUserAndPasswordCombination(string email, string password)
        {
            // Test if is database and is correct
            List<UserInfo> users = _userService.GetAll();

            UserInfo user = users.Where(u => u.Email == email).FirstOrDefault();

            if (user != null && user.Password == password)
            {
                return true;
            }

            return false;

            /*if (email == "thomas.fransolet@hotmail.be" && password == "MonsieurMagic") { return true; }
            else return false;*/
        }

    }
}