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("monthly-desires")]
    [ApiController]
    public class DesireHeadsController : ControllerBase
    {
        private readonly TESOContext _context;

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

        [Authorize]
        [Route("check-status"),HttpGet]
        public async Task<ActionResult> GetDesireHeads()
        {
            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;

            if (DateTime.Now.Day > 24)
            {
                DateTime date = DateTime.Now.AddMonths(1);
                bool result =  _context.DesireHeads.Any(e => e.UserGuid == userID && e.Month.Month == date.Month && e.Month.Year == date.Year);

                if (result)
                {
                    return Ok("submitted");
                }
                else
                {
                    return Ok("not submitted");
                }
            }
            else
            {
                return Ok("not due");
            }
        }

        [Authorize]
        [Route("submit-newdesire"),HttpPost]
        public async Task<ActionResult> PostDesireHead(List<DesiredItem> items)
        {
            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;

            if (DateTime.Now.Day > 24)
            {
                List<DesireDetail> desireDetails = new List<DesireDetail>();
                DesireHead desireHead = new DesireHead();
                desireHead.DesireGuid = String.Format("{0:d9}", (DateTime.Now.Ticks / 10) % 10000000) + userID;
                desireHead.UserGuid = userID;
                desireHead.Month = DateTime.Now.AddMonths(1);
                int i = 1;
                foreach (DesiredItem item in items)
                {
                    DesireDetail desire = new DesireDetail();
                    desire.CountId = DateTime.Now.ToString("yyyyMMddHHmmssfff") + userID + i;
                    desire.ProductId = item.productID;
                    desire.Enlisted = item.enlisted == "true" ? true : false;
                    desire.DesireGuid = desireHead.DesireGuid;
                    desire.Category = item.category;

                    desireDetails.Add(desire);
                    i++;
                }

                _context.DesireDetails.AddRange(desireDetails);

                _context.DesireHeads.Add(desireHead);

                try
                {
                    await _context.SaveChangesAsync();
                }
                catch (DbUpdateException)
                {
                    return Conflict();
                }

                return Ok();
            }
            else
            {
                return BadRequest();
            }
        }
    }
}