using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Claims;
using System.Threading.Tasks;
using GreenTree.Strohrmann.ERP.Core.Helper;
using GreenTree.Strohrmann.ERP.Domain.Model;
using GreenTree.Strohrmann.ERP.Services.Authentication;
using GreenTree.Strohrmann.ERP.Services.Authorization;
using GreenTree.Strohrmann.ERP.Web.Models.Account;
using Microsoft.AspNetCore.Authentication.Cookies;
using Microsoft.AspNetCore.Mvc;

namespace GreenTree.Strohrmann.ERP.Web.Controllers
{
    public class AccountController : Controller
    {
        #region DI fields

        // The global DbContext
        private readonly ERPDbContext _eRPDbContext;

        // The global authentication service
        private readonly IAuthenticationService _authenticationService;

        // The global user helper
        private readonly IUserHelper _userHelper;

        // The global administation options
        private readonly AdministrationOptions _administrationOptions;

        #endregion

        #region Ctor

        /// <summary>
        /// Initializes a new instance of the AccountController class
        /// </summary>
        /// <param name="eRPDbContext">Global DbContext.</param>
        /// <param name="authenticationService">Global authentication service.</param>
        /// <param name="userHelper">Global user helper.</param>
        /// <param name="administrationOptions">Global administration options.</param>
        public AccountController(
            ERPDbContext eRPDbContext,
            IAuthenticationService authenticationService,
            IUserHelper userHelper,
            AdministrationOptions administrationOptions)
        {
            _eRPDbContext = eRPDbContext;
            _authenticationService = authenticationService;
            _userHelper = userHelper;
            _administrationOptions = administrationOptions;
        }

        #endregion

        #region Actions

        // Index View / redirect to Login
        public IActionResult Index()
        {
            return RedirectToAction(nameof(Login));
        }

        // Login View
        public IActionResult Login()
        {
            return View("~/Views/Account/Login.cshtml");
        }

        // POST: Account/Login
        [HttpPost]
        [ValidateAntiForgeryToken]
        public IActionResult Login(LoginModel login)
        {
            if (!ModelState.IsValid)
            {
                login.Password = String.Empty;

                return View("~/Views/Account/Login.cshtml", login);
            }

            if (login.Username == _administrationOptions.Administrator)
            {
                _authenticationService.SignInAdmin(login.StayLoggedIn);

                return RedirectToAction("Index", "Home");
            }
            else
            {
                _authenticationService.SignIn(login.Username, login.StayLoggedIn);

                return RedirectToAction("Index", "Home");
            }
        }

        // Logout View
        public IActionResult Logout()
        {
            _authenticationService.SignOut();

            return RedirectToAction(nameof(Login));
        }

        #endregion
    }
}