using System;
using System.Collections.Generic;
using System.IdentityModel.Tokens.Jwt;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using Microsoft.Net.Http.Headers;
using Teso_API.Models;

namespace Teso_API.Controllers
{
    [AllowAnonymous, Route("favoriteCategories")]
    [ApiController]
    public class UserFavCategoriesController : ControllerBase
    {
        private readonly TESOContext _context;

        public UserFavCategoriesController(TESOContext context)
        {
            _context = context;
        }

        [Authorize]
        [Route("pullUser"), HttpPost]
        public async Task<IEnumerable<UserFavCategory>> GetUserFavCategory([FromBody]string id)
        {
            List<UserFavCategory> userFavCategory = await _context.UserFavCategories.AsQueryable().Where(i => i.UserGuid == id).ToListAsync();

            if (userFavCategory == null)
            {
                userFavCategory = new List<UserFavCategory>();
            }

            return userFavCategory;
        }

        [Authorize]
        [Route("updateFavorites"), HttpPost]
        public async Task<ActionResult> GeUpdateUserFavCategory(List<UserFavCategory> favCategory)
        {
            var accessToken = Request.Headers[HeaderNames.Authorization];
            string token = accessToken;
            token = token.Substring(6).Trim();
            var handler = new JwtSecurityTokenHandler();
            var jwtToken = handler.ReadToken(token) as JwtSecurityToken;
            string userID = jwtToken.Claims.First(claim => claim.Type == "userGUID").Value;
            List<UserFavCategory> oldFav = await _context.UserFavCategories.AsQueryable().Where(u => u.UserGuid == userID).ToListAsync();

            _context.UserFavCategories.RemoveRange(oldFav);
            _context.UserFavCategories.AddRange(favCategory);
            try
            {
                await _context.SaveChangesAsync();
                return Ok();
            }
            catch (DbUpdateException)
            {
                return Conflict();
            }
        }
    }
}