using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using MQTTnet;
using MQTTnet.Client;
using MQTTnet.Server;
using MyCore.Interfaces.Models;
using MyCore.Service.Services;
using MyCore.Services;
using MyCore.Interfaces.DTO;


namespace MyCore.Controllers
{
    [Authorize] // TODO Add ROLES (Roles = "Admin")
    [Route("api/user")]
    [ApiController]
    public class UserController : ControllerBase
    {
        private UserDatabaseService _userService;
        private TokensService _tokenService;

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

        // GET api/user
        /// <summary>
        /// Get a list of user 
        /// </summary>
        [ProducesResponseType(typeof(List<UserInfo>), 200)]
        [HttpGet]
        public ObjectResult Get()
        {
            try
            {
                List<UserInfo> users = _userService.GetAll();

                return new OkObjectResult(users);
            }
            catch (Exception ex)
            {
                return new ObjectResult(ex.Message) { StatusCode = 500 };
            }
        }

        
        // GET api/user/5
        /// <summary>
        /// Get a specific user 
        /// </summary>
        /// <param name="id">id user</param>  
        [ProducesResponseType(typeof(UserInfoDetailDTO), 200)]
        [HttpGet("{id}")]
        public ObjectResult Get(string id)
        {
            try
            {
                // TODO ! Add object id verification
                UserInfo user = _userService.GetById(id);

                if (user == null)
                {
                    return Conflict("This user was not found");
                }

                return new OkObjectResult(user.ToDTO());
            }
            catch (Exception ex)
            {
                return new ObjectResult(ex.Message) { StatusCode = 500 };
            }
        }

        // POST: User/Create
        /// <summary>
        /// 
        /// </summary>
        [AllowAnonymous]
        [ProducesResponseType(typeof(UserInfoDetailDTO), 200)]
        [HttpPost]
        public ObjectResult CreateUser([FromBody] UserInfo newUser)
        {
            try
            {
                if (newUser != null)
                {
                    newUser.Token = _tokenService.GenerateToken(newUser.Email).ToString();
                    newUser.DateCreation = DateTime.Now;

                    List<UserInfo> users = _userService.GetAll();

                    if (users.Select(u => u.Email).Contains(newUser.Email))
                    {
                        return Conflict("This Email is already used");
                    }

                    UserInfo userCreated = _userService.Create(newUser);

                    return new OkObjectResult(userCreated.ToDTO());
                }
                else {
                    // TODO
                    return new ObjectResult("An error has occurred") { StatusCode = 500 };
                }
            }
            catch (Exception ex)
            {
                return new ObjectResult(ex.Message) { StatusCode = 500 };
            }
        }


        // PUT: User/Update
        /// <summary>
        /// 
        /// </summary>
        [ProducesResponseType(typeof(UserInfoDetailDTO), 200)]
        [HttpPut]
        public ObjectResult UpdateUser([FromBody] UserInfo updatedUser)
        {
            try
            {
                // TODO ! Add object id verification

                if (updatedUser != null)
                {
                    UserInfo user = _userService.GetById(updatedUser.Id);

                    if (user != null)
                    {
                        return NotFound("The user was not found");
                    }

                    UserInfo userModified = _userService.Update(updatedUser.Id, updatedUser);

                    return new OkObjectResult(userModified.ToDTO());
                }
                else {
                    // TODO
                    return new ObjectResult("An error has occurred") { StatusCode = 500 };
                }
            }
            catch (Exception ex)
            {
                return new ObjectResult(ex.Message) { StatusCode = 500 };
            }
        }


        // DELETE: User/Delete
        [HttpDelete("{id}")]
        public ObjectResult DeleteUser(string id)
        {
            try
            {
                // TODO ! Add object id verification

                if (id != null)
                {
                    UserInfo user = _userService.GetById(id);

                    if (user != null)
                    {
                        return NotFound("The user was not found");
                    }

                    _userService.Remove(id);

                    return Accepted("The user has been deleted");
                }
                else
                {
                    // TODO
                    return new ObjectResult("An error has occurred") { StatusCode = 500 };
                }
            }
            catch (Exception ex)
            {
                return new ObjectResult(ex.Message) { StatusCode = 500 };
            }
        }
    }
}