using ComputerStoreBusinessLogic.BusinessLogic;
using ComputerStoreContracts.BindingModels;
using ComputerStoreContracts.BusinessLogicContracts;
using ComputerStoreContracts.SearchModels;
using ComputerStoreContracts.ViewModels;
using ComputerStoreDatabaseImplement.Models;
using ComputerStoreDataModels.Models;
using DocumentFormat.OpenXml.Office2010.Excel;
using Microsoft.AspNetCore.Mvc;
using Newtonsoft.Json;
using System.Text.RegularExpressions;

namespace ComputerStoreSellerApp.Controllers
{
    public class ConsignmentController : Controller
    {
        private IConsignmentLogic _consignmentLogic;
        private IProductLogic _productLogic;

        private static List<(int productId, int count)> selectedProducts = new();

        public ConsignmentController(IConsignmentLogic consignmentLogic, IProductLogic productLogic)
        {
            _consignmentLogic = consignmentLogic;
            _productLogic = productLogic;
        }

        [HttpPost("[controller]/[action]")]
        public IActionResult AddProduct(int product, int amount)
        {
            if (!HttpContext.Session.Keys.Contains("login"))
            {
                return RedirectToAction("Login", "Auth");
            }
            if (amount <= 0)
            {
                return RedirectToAction("Create", "Consignment");
            }

            var tmp = selectedProducts.FirstOrDefault(x => x.productId == product && x.count > 0);
            if (tmp.productId != 0)
            {
                selectedProducts.Remove((tmp.productId, tmp.count));
                selectedProducts.Add((product, tmp.count + amount));
            }
            else
            {
                selectedProducts.Add((product, amount));
            }

            return RedirectToAction("CreatePage", "Consignment");
        }

        [HttpPost("[controller]/[action]")]
        public IActionResult UpdateProduct(int product, int amount, int id)
        {
            if (!HttpContext.Session.Keys.Contains("login"))
            {
                return RedirectToAction("Login", "Auth");
            }
            if (amount <= 0)
            {
                return RedirectToAction("Create", "Consignment");
            }

            var tmp = selectedProducts.FirstOrDefault(x => x.productId == product && x.count > 0);
            if (tmp.productId != 0)
            {
                selectedProducts.Remove((tmp.productId, tmp.count));
                selectedProducts.Add((product, tmp.count + amount));
            }
            else
            {
                selectedProducts.Add((product, amount));
            }

            ViewData["currentConsignment"] = _consignmentLogic.ReadElement(new ConsignmentSearchModel() { ID = id });
            ViewData["products"] = _productLogic.ReadList(null);

            ViewData["selectedProducts"] = selectedProducts;

            return View("Views/Consignment/Create.cshtml");
        }


        [HttpGet("[controller]/[action]")]
        public IActionResult List()
        {
            if (!HttpContext.Session.Keys.Contains("login"))
            {
                return RedirectToAction("Login", "Auth");
            }
            selectedProducts.Clear();
            ViewData["consignments"] = _consignmentLogic.ReadList(null);

            return View();
        }

        [HttpGet("[controller]/[action]/{id}")]
        public IActionResult View(int id)
        {
            if (!HttpContext.Session.Keys.Contains("login"))
            {
                return RedirectToAction("Login", "Auth");
            }

            var consignment = _consignmentLogic.ReadElement(new ConsignmentSearchModel() { ID = id });

            if (consignment is null)
            {
                TempData.Add("error", "Партии с таким идентификатором не существует");
                return RedirectToAction("List", "Consignment", null);
            }
            ViewData["currentConsignment"] = consignment;
            ViewData["products"] = _productLogic.ReadList(null);

            foreach (var selprod in consignment.ConsignmentProducts)
            {
                selectedProducts.Add((selprod.Value.Item1.ID, selprod.Value.Item2));
            }


            ViewData["selectedProducts"] = selectedProducts;

            return View("Views/Consignment/Create.cshtml");
        }

        [HttpGet("[controller]/[action]")]
        public IActionResult CreatePage()
        {
            if (!HttpContext.Session.Keys.Contains("login"))
            {
                return RedirectToAction("Login", "Auth");
            }

            ViewData["selectedProducts"] = selectedProducts;
            ViewData["products"] = _productLogic.ReadList(null);

            return View("Views/Consignment/Create.cshtml");
        }

        [HttpPost("[controller]/[action]")]
        public IActionResult Create()
        {
            if (!HttpContext.Session.Keys.Contains("login"))
            {
                return RedirectToAction("Login", "Auth");
            }

            if (selectedProducts.Count == 0)
            {
                TempData.Add("error", "Партия должна содержать продукты");
                return RedirectToAction("CreatePage", "Consignment");
            }

            try
            {
                double tmpPrice = 0;
                foreach (var (productId, count) in selectedProducts)
                {
                    tmpPrice += _productLogic.ReadElement(new ProductSearchModel() { ID = productId })!.Price * count;
                }

                _consignmentLogic.Create(new ConsignmentBindingModel()
                {
                    OrderID = null,
                    ConsignmentProducts = selectedProducts.ToDictionary(x => x.productId, x => ((IProductModel)_productLogic.ReadElement(new ProductSearchModel() { ID = x.productId })!, x.count)),
                    Price = tmpPrice,
                });
                selectedProducts.Clear();
                return RedirectToAction("List", "Consignment", null);
            }
            catch (Exception e)
            {
                TempData.Add("error", Regex.Replace(e.Message, "[a-zA-Z\\(\\)']", ""));
                selectedProducts.Clear();
                return RedirectToAction("List", "Consignment", null);
            }
        }

        [HttpPost("[controller]/[action]/{id}")]
        public IActionResult Edit(int id)
        {
            if (!HttpContext.Session.Keys.Contains("login"))
            {
                return RedirectToAction("Login", "Auth");
            }

            if (selectedProducts.Count == 0)
            {
                TempData.Add("error", "Партия должна содержать продукты");
                ViewData["currentConsignment"] = _consignmentLogic.ReadElement(new ConsignmentSearchModel() { ID = id });
                ViewData["products"] = _productLogic.ReadList(null);
                ViewData["selectedProducts"] = selectedProducts;
                return View("Views/Consignment/Create.cshtml");
            }

            try
            {
                double tmpPrice = 0;
                foreach (var (productId, count) in selectedProducts)
                {
                    tmpPrice += _productLogic.ReadElement(new ProductSearchModel() { ID = productId })!.Price * count;
                }

                _consignmentLogic.Update(new ConsignmentBindingModel()
                {
                    ID = id,
                    OrderID = _consignmentLogic.ReadElement( new ConsignmentSearchModel() { ID = id })?.OrderID,
                    ConsignmentProducts = selectedProducts.ToDictionary(x => x.productId, x => ((IProductModel)_productLogic.ReadElement(new ProductSearchModel() { ID = x.productId })!, x.count)),
                    Price = tmpPrice,
                });
                selectedProducts.Clear();
                return RedirectToAction("List", "Consignment", null);
            }
            catch (Exception e)
            {
                TempData.Add("error", Regex.Replace(e.Message, "[a-zA-Z\\(\\)']", ""));
                return RedirectToAction("View", "Consignment", new { id = id });
            }
        }

        [HttpPost("[controller]/[action]/{id}")]
        public IActionResult Delete(int id)
        {
            if (!HttpContext.Session.Keys.Contains("login"))
            {
                return RedirectToAction("Login", "Auth");
            }

            if (_consignmentLogic.ReadElement(new ConsignmentSearchModel { ID = id })?.OrderID == null)
            {
                _consignmentLogic.Delete(new ConsignmentBindingModel() { ID = id });
            }

            return RedirectToAction("List", "Consignment", null);
        }

        [HttpPost("[controller]/[action]/{selectedproductid}/{currentconsignmentid}")]
        public IActionResult DeleteProduct(int selectedproductid, int currentconsignmentid)
        {
            if (!HttpContext.Session.Keys.Contains("login"))
            {
                return RedirectToAction("Login", "Auth");
            }

            selectedProducts.Remove(selectedProducts.FirstOrDefault(x => x.productId == selectedproductid && x.count > 0));
            if (currentconsignmentid > 0)
            {
                ViewData["currentConsignment"] = _consignmentLogic.ReadElement(new ConsignmentSearchModel() { ID = currentconsignmentid });
                ViewData["products"] = _productLogic.ReadList(null);
                ViewData["selectedProducts"] = selectedProducts;
                return View("Views/Consignment/Create.cshtml");
            }
            else
            {
                return RedirectToAction("CreatePage", "Consignment");
            }
        }
    }
}