using System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using System.Reflection.Metadata;
using IOL.Fagprove.Data;
using IOL.Fagprove.Data.DTOs;
using IOL.Fagprove.Data.Models;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using IOL.Fagprove.Utilities;

namespace IOL.Fagprove.Controllers
{
    [Authorize("Administrator")]
    public class CabinsController : BaseController
    {
        private readonly AppDbContext _context;

        public CabinsController(AppDbContext context)
        {
            _context = context;
        }

        [HttpGet]
        public ActionResult<List<CabinDto>> GetCabins()
        {
            var cabins = _context.Cabins.ToList();
            var res = new List<CabinDto>();
            foreach (var cabin in cabins)
            {
                var fieldName = StaticData.CabinFields.FirstOrDefault(s => s.Id == cabin.CategoryId)?.Name ?? "Ukjent";
                res.Add(new CabinDto
                {
                    Capacity = cabin.Capacity,
                    Description = cabin.Description,
                    Id = cabin.Id,
                    Name = cabin.Name,
                    Price = cabin.Price,
                    CategoryId = cabin.CategoryId,
                    CategoryName = fieldName
                });
            }

            return res;
        }

        [HttpPost("create")]
        public ActionResult CreateCabin(ReservationObject data)
        {
            if (data.Name.IsMissing()) return BadRequest(new {error = "Navn er påkrevd"});
            data.CreatedBy = LoggedInUser.Id;
            data.CreatedUtc = DateTime.UtcNow;
            _context.Cabins.Add(data);
            _context.SaveChanges();
            return Ok(data.Name);
        }

        [HttpPut("update")]
        public ActionResult UpdateCabin(ReservationObject data)
        {
            if (data.Name.IsMissing()) return BadRequest("Navn er påkrevd");
            if (data.Id == Guid.Empty) return BadRequest();
            var cabinExists = _context.Cabins.Any(c => c.Id == data.Id);
            if (!cabinExists) return BadRequest(new {error = "Fant ikke hytten"});
            data.ModifiedBy = LoggedInUser.Id;
            data.ModifiedUtc = DateTime.UtcNow;
            _context.Cabins.Update(data);
            _context.Entry(data).Property(x => x.CreatedBy).IsModified = false;
            _context.Entry(data).Property(x => x.CreatedUtc).IsModified = false;
            _context.Entry(data).Property(x => x.Id).IsModified = false;
            _context.SaveChanges();
            return Ok();
        }

        [HttpDelete("delete")]
        public ActionResult DeleteCabin(CabinDto data)
        {
            var cabinToRemove = _context.Cabins.SingleOrDefault(c => c.Id == data.Id);
            if (cabinToRemove == default) return Ok();
            _context.Cabins.Remove(cabinToRemove);
            var existingFutureReservationsForThisCabin = _context.Reservations.Where(r => r.ReservationObjectId == cabinToRemove.Id
                                                                                             && DateTime.Compare(r.From, DateTime.Today) >= 0).ToList();
            if (existingFutureReservationsForThisCabin.Count != 0)
            {
                _context.Reservations.RemoveRange(existingFutureReservationsForThisCabin);
            }

            _context.SaveChanges();
            return Ok();
        }
    }
}