namespace LaaProduction.Web.Controllers
{
    using LaaProductionHttp.Interfaces;
    using LaaProduction.Web.App_Infrastructure;
    using LaaProductionDI;

    using System.Threading.Tasks;
    using System.Web.Mvc;

    [AllowAnonymous]
    public class HomeController : Controller
    {
        private readonly IHttpClient httpClient;

        public HomeController()
        {
            this.httpClient = LaaServiceProvider.GetService<IHttpClient>();
        }

        [HttpGet]
        public ActionResult Index() 
            => this.View();

        [HttpPost]
        public async Task<ActionResult> Index(string username, string password)
        {
            if (string.IsNullOrWhiteSpace(username))
            {
                this.ModelState.AddModelError(nameof(username), "Benutzername ist erforderlich.");
            }

            if (string.IsNullOrWhiteSpace(password))
            {
                this.ModelState.AddModelError(nameof(password), "Kennwort ist erforderlich.");
            }

            password = password.ComputeHash();

            var software = typeof(HomeController)
                .Assembly
                .GetName();
            var assembly = software.Name;
            var majorV = software.Version.Major;
            var minorV = software.Version.Minor;
            var buildV = software.Version.Build;

            var token = await this.httpClient
                .Post("/Login/Local")
                .WhitJsonBody(new { username, password, assembly, majorV, minorV, buildV })
                .SendAsync<string>();

            if (!token.Succeeded)
            {
                foreach (var error in token.Errors)
                {
                    this.ModelState.AddModelError(error.Key, error.Value);
                }

                if (!string.IsNullOrWhiteSpace(token.Message))
                {
                    this.ModelState.AddModelError(nameof(token.Message), token.Message);
                }
            }
            else
            {
                this.HttpContext.SignIn(token.Value);

                return this.Redirect(this.HttpContext.GetUrlReferer());
            }

            return this.View();
        }
        
        public ActionResult Logout()
        {
            this.HttpContext.SignOut();

            return this.Redirect("~/");
        }
    }
}