using Blazored.LocalStorage;
using HotelPms.Client.Blazor.Util;
using HotelPms.Data;
using Grpc.Net.Client;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Authorization;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Text.Json;
using System.Threading.Channels;
using System.Threading.Tasks;
using HotelPms.DataAccessGrpc.Client;

namespace HotelPms.Client.Blazor.Services
{
    internal class AuthService : IAuthService
    {
        private readonly GrpcChannel Channel;
        private readonly AuthenticationStateProvider _authenticationStateProvider;
        private readonly ILocalStorageService _localStorage;

        public AuthService(GrpcChannel channel,
            AuthenticationStateProvider authenticationStateProvider,
            ILocalStorageService localStorage)
        {
            Channel = channel;
            _authenticationStateProvider = authenticationStateProvider;
            _localStorage = localStorage;
        }

        public async Task<LoginResult> Login(string loginID, string passwordl)
        {
            using (AuthAccess access = new AuthAccess(Channel))
            {
                LoginResult result = await access.LoginAsync(loginID, passwordl);
                var options = new JsonSerializerOptions
                {
                    WriteIndented = true
                };

                if (result.ErrNo != 0)
                {
                    return result;
                }


                await _localStorage.SetItemAsync("authToken", result.AccessToKen);
                ((ApiAuthenticationStateProvider)_authenticationStateProvider).MarkUserAsAuthenticated(result.AccessToKen);
                ApiAuthenticationStateProvider.AccessToken = result.AccessToKen;

                return result;
            }
        }

        public async Task<LoginResult> Logout(string loginID)
        {
            using (AuthAccess access = new AuthAccess(Channel))
            {
                LoginResult result = await access.LogoutAsync(loginID);
                var options = new JsonSerializerOptions
                {
                    WriteIndented = true
                };

                if (result.ErrNo != 0)
                {
                    return result;
                }

                await _localStorage.RemoveItemAsync("authToken");
                ((ApiAuthenticationStateProvider)_authenticationStateProvider).MarkUserAsLoggedOut();
                ApiAuthenticationStateProvider.AccessToken = null;
                return result;
            }
        }
    }
}