using DocumentFormat.OpenXml.Office2010.Excel;
using Microsoft.AspNetCore.Mvc;
using System;
using System.Linq;
using TravelAgencyContracts.BindingModels;
using TravelAgencyContracts.BusinessLogicsContracts;
using TravelAgencyContracts.SearchModels;
using TravelAgencyDatabaseImplement.Models;
using TravelAgencyDataModels.Models;

namespace TravelAgencyWebApp.Controllers
{
    public class ExcursionGroupController : Controller
    {
        private readonly ILogger<ExcursionGroupController> _logger;

        private readonly IExcursionGroupLogic _excursionGroupLogic;

        private readonly ITourLogic _tourLogic;

        private readonly IGuideLogic _guideLogic;

        private readonly IPlaceLogic _placeLogic;

        public ExcursionGroupController(ILogger<ExcursionGroupController> logger, IExcursionGroupLogic excursionGroupLogic, ITourLogic tourLogic, IGuideLogic guideLogic, IPlaceLogic placeLogic)
        {
            _logger = logger;
            _excursionGroupLogic = excursionGroupLogic;
            _tourLogic = tourLogic;
            _guideLogic = guideLogic;
            _placeLogic = placeLogic;
        }

        [HttpGet]
        public IActionResult ExcursionGroups()
        {
            if (LoggedinUser.User == null)
            {
                return Redirect("~/Home/Enter");
            }

            return View(_excursionGroupLogic.ReadList(new ExcursionGroupSearchModel
            {
                UserId = LoggedinUser.User.Id,
            }));
        }

        [HttpGet]
        public IActionResult CreateExcursionGroup()
        {
            if (LoggedinUser.User == null)
            {
                return Redirect("~/Home/Enter");
            }

            ViewBag.Tours = _tourLogic.ReadList(new TourSearchModel
            {
                UserId = LoggedinUser.User.Id,
            });

            ViewBag.Guides = _guideLogic.ReadList(null);

            return View();
        }

        [HttpPost]
        public void CreateExcursionGroup(string excursionGroupName, int participantsAmount, int guide, List<int> tours)
        {
            if (LoggedinUser.User == null)
            {
                throw new Exception("Необходимо авторизоваться!");
            }

            if (string.IsNullOrEmpty(excursionGroupName) || participantsAmount < 1 || guide <= 0 || tours == null)
            {
                throw new Exception("Введены не все данные!");
            }

            Dictionary<int, ITourModel> excursionGroupTours = new Dictionary<int, ITourModel>();
            foreach (var tourId in tours)
            {
                excursionGroupTours.Add(tourId, _tourLogic.ReadElement(new TourSearchModel { Id = tourId })!);
            }

            _excursionGroupLogic.Create(new ExcursionGroupBindingModel
            {
                ExcursionGroupName = excursionGroupName,
                ParticipantsAmount = participantsAmount,
                UserId = LoggedinUser.User.Id,
                GuideId = guide,
                ExcursionGroupTours = excursionGroupTours
            });

            Response.Redirect("/ExcursionGroup/ExcursionGroups");
        }

        [HttpGet]
        public IActionResult UpdateExcursionGroup(int id)
        {
            if (LoggedinUser.User == null)
            {
                return Redirect("~/Home/Enter");
            }

            ViewBag.Tours = _tourLogic.ReadList(new TourSearchModel
            {
                UserId = LoggedinUser.User.Id,
            });

            ViewBag.Guides = _guideLogic.ReadList(null);

            return View(_excursionGroupLogic.ReadElement(new ExcursionGroupSearchModel
            {
                Id = id
            }));
        }

        [HttpPost]
        public void UpdateExcursionGroup(int id, string excursionGroupName, int participantsAmount, int guide, List<int> tours)
        {
            if (LoggedinUser.User == null)
            {
                throw new Exception("Необходимо авторизоваться!");
            }

            if (string.IsNullOrEmpty(excursionGroupName) || participantsAmount < 1 || guide <= 0 || tours == null)
            {
                throw new Exception("Введены не все данные!");
            }

            Dictionary<int, ITourModel> excursionGroupTours = new Dictionary<int, ITourModel>();
            foreach (var tourId in tours)
            {
                excursionGroupTours.Add(tourId, _tourLogic.ReadElement(new TourSearchModel { Id = tourId })!);
            }

            var excursionGroup = _excursionGroupLogic.ReadElement(new ExcursionGroupSearchModel() { Id = id });

            _excursionGroupLogic.Update(new ExcursionGroupBindingModel
            {
                Id = id,
                ExcursionGroupName = excursionGroupName,
                ParticipantsAmount = participantsAmount,
                UserId = LoggedinUser.User.Id,
                GuideId = guide,
                ExcursionGroupTours = excursionGroupTours,
                ExcursionGroupPlaces = excursionGroup.ExcursionGroupPlaces
            });

            Response.Redirect("/ExcursionGroup/ExcursionGroups");
        }

        [HttpPost]
        public void DeleteExcursionGroup(int id)
        {
            if (LoggedinUser.User == null)
            {
                throw new Exception("Необходимо авторизоваться!");
            }

            _excursionGroupLogic.Delete(new ExcursionGroupBindingModel
            {
                Id = id
            });

            Response.Redirect("/ExcursionGroup/ExcursionGroups");
        }

        [HttpGet]
        public IActionResult ConnectGroupToPlace()
        {
            if (LoggedinUser.User == null)
            {
                return Redirect("~/Home/Enter");
            }

            ViewBag.ExcursionGroups = _excursionGroupLogic.ReadList(new ExcursionGroupSearchModel
            {
                UserId = LoggedinUser.User.Id,
            });

            ViewBag.Places = _placeLogic.ReadList(null);

            return View();
        }

        [HttpPost]
        public IActionResult ConnectGroupToPlace(int excursionGroupId, int placeId)
        {
            if (LoggedinUser.User == null)
            {
                throw new Exception("Необходимо авторизоваться!");
            }

            if (excursionGroupId <= 0 || placeId <= 0)
            {
                throw new Exception("Введены не все данные!");
            }
            var excursionGroup = _excursionGroupLogic.ReadElement(new ExcursionGroupSearchModel() { Id = excursionGroupId });
            Dictionary<int, IPlaceModel> excursionGroupPlaces = excursionGroup.ExcursionGroupPlaces;
            if (!excursionGroupPlaces.ContainsKey(placeId)) 
                excursionGroupPlaces.Add(placeId, _placeLogic.ReadElement(new PlaceSearchModel { Id = placeId })!);

            _excursionGroupLogic.Update(new ExcursionGroupBindingModel
            {
                Id = excursionGroupId,
                ExcursionGroupName = excursionGroup.ExcursionGroupName,
                ParticipantsAmount = excursionGroup.ParticipantsAmount,
                UserId = LoggedinUser.User.Id,
                GuideId = excursionGroup.GuideId,
                ExcursionGroupTours = excursionGroup.ExcursionGroupTours,
                ExcursionGroupPlaces = excursionGroupPlaces
            });

            ViewBag.ExcursionGroups = _excursionGroupLogic.ReadList(new ExcursionGroupSearchModel
            {
                UserId = LoggedinUser.User.Id,
            });

            ViewBag.Places = _placeLogic.ReadList(null);

            return View();
        }
    }
}