using System.Web.Http;
using static Step.Utils.Constants;
using Step.Database.Controllers;
using System;
using Step.Model.DatabaseModels;
using System.Security.Claims;
using System.Linq;
using static Step.Utils.LanguageController;
using Step.Model.DTOModels;
using System.Globalization;
using Microsoft.AspNet.SignalR;
using Step.Controllers.SignalR;

namespace Step.Controllers.WebApi
{
    [RoutePrefix("api/user")]
    public class UserController : ApiController
    {
        [Route("logout"), HttpPost]
        [WebApiAuthorize(FunctionAccess = "logout", Action = ACTIONS.WRITE)]
        public IHttpActionResult Logout()
        {
            var identity = User.Identity as ClaimsIdentity;
            // Find user id from the bearer token
            var userId = identity.Claims.Where(c => c.Type == USER_ID_KEY).SingleOrDefault();
            if (userId == null)
                return Unauthorized();
            // Find machine id from the bearer token
            var machineId = identity.Claims.Where(c => c.Type == MACHINE_ID_KEY).SingleOrDefault();
            if (machineId == null)
                return Unauthorized();

            using (SessionsController sessionsController = new SessionsController())
            {
                // Delete all the user session on the machine
                sessionsController.DeleteSessionsByUserAndMachineId(Convert.ToInt32(machineId.Value), Convert.ToInt32(userId.Value));
            }
            // Send to the clients the id of the disconnected user
            var context = GlobalHost.ConnectionManager.GetHubContext<NcHub>();
            context.Clients.All.logout(new { id = userId.Value });
            return Ok();
        }

        [Route("register"), HttpPost]
        public IHttpActionResult CreateUser(UserModel model)
        {
            UsersController users = new UsersController();
            users.Create(model.Username, model.Password, model.FirstName, model.LastName, model.Language);
            return Ok();
        }

        [Route("info"), HttpGet]
        [WebApiAuthorize(FunctionAccess = "userData", Action = ACTIONS.READ)]
        public IHttpActionResult UserInfo()
        {
            var identity = User.Identity as ClaimsIdentity;
            // Find user id from the bearer token
            var userId = identity.Claims.Where(c => c.Type == USER_ID_KEY).SingleOrDefault();
            if (userId == null)
                return Unauthorized();

            using (UsersController usersController = new UsersController())
            {
                return Ok(usersController.GetUserInfo(Convert.ToInt32(userId.Value)));
            }
        }

        [Route("language"), HttpPut]
        [WebApiAuthorize(FunctionAccess = "userData", Action = ACTIONS.READ)]
        public IHttpActionResult PutUserLanguage([FromBody] dynamic user)
        {
            // If no body return 400
            if (user == null)
                return BadRequest();

            // Validate user id
            var identity = User.Identity as ClaimsIdentity;
            var userId = identity.Claims.Where(c => c.Type == USER_ID_KEY).SingleOrDefault();

            if (userId == null)
                return Unauthorized();
            
            // Parse body data and validate language
            var newLanguage = (string)user.language;

            if (newLanguage == null || !IsValidLanguage(newLanguage))
                return BadRequest();
            // Find if language is Available in the server directory
            if (!LanguageIsAvailable(newLanguage))
                return NotFound();
            
            using (UsersController usersController = new UsersController())
            {
                // Update database with new language
                usersController.ChangeUserLanguage(Convert.ToInt32(userId.Value), CultureInfo.CreateSpecificCulture(newLanguage));

                return Ok();
            }
        }
    }
}