using Contracts.BindingModels;
using Contracts.ViewModels;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;

namespace ImplementerApp.Controllers
{
    public class ProductController : Controller
    {
        private readonly ILogger<ProductController> _logger;
        private readonly ImplementerData _data;
        public ProductController(ILogger<ProductController> logger, ImplementerData data)
        {
            _logger = logger;
            _data = data;
        }
        private bool IsLoggedIn { get { return UserImplementer.user != null; } }
        private int UserId { get { return UserImplementer.user!.Id; } }

 
        [HttpGet]
        public IActionResult IndexProduct()
        {
            if (IsLoggedIn)
            {
                try {
                    var products = _data.GetProducts(UserImplementer.user!.Id);
                    return View(products);
                } catch (Exception)
                {
                    return RedirectToAction("IndexNonReg", "Home");
                }
            }
            return RedirectToAction("IndexNonReg", "Home");
        }
        [HttpPost]
        public IActionResult IndexProduct(int id)
        {
            try
            {
                _data.DeleteProduct(id);
            }
            catch (Exception)
            { }
            return RedirectToAction("IndexProduct");
        }
        [HttpGet]
        public IActionResult CreateProduct(int id)
        {
            if (!IsLoggedIn)
                return RedirectToAction("IndexNonReg", "Home");
            try
            {
                var details = _data.GetDetails(UserImplementer.user!.Id);
                ViewBag.AllDetails = details;
                if (id != 0)
                {
                    var value = _data.GetProduct(id);
                    if (value != null)
                        return View(value);
                }
            }
            catch (Exception)
            { }
            return View(new ProductViewModel());
        }
        [HttpPost]
        public IActionResult CreateProduct(int id, string title, int[] detailIds, int[] counts)
        {
            try
            {
                ProductBindingModel model = new ProductBindingModel();
                model.Id = id;
                model.Name = title;
                model.UserId = UserImplementer.user!.Id;
                var details = _data.GetDetails(UserImplementer.user!.Id);
                double sum = 0;
                for (int i = 0; i < detailIds.Length; i++)
                {
                    var detail = details!.FirstOrDefault(x => x.Id == detailIds[i])!;
                    if (counts[i] <= 0)
                        continue;
                    model.ProductDetails[detailIds[i]] = (detail, counts[i]);
                    sum += detail.Cost * counts[i];
                }
                if (model.ProductDetails.Count == 0)
                    return RedirectToAction("IndexProduct");
                model.Cost = sum;
            
                if (id != 0)
                {
                    _data.UpdateProduct(model);
                }
                else
                {
                    _data.CreateProduct(model);
                }
            }
            catch (InvalidOperationException ex)
            {
                ViewBag.ErrorMessage = "Такое название изделия уже существует";
                return View();
            }
            return RedirectToAction("IndexProduct");
        }
        [HttpGet]
        public IActionResult ProductMachineAdd(int id)
        {
            if (!IsLoggedIn)
                return RedirectToAction("IndexNonReg", "Home");
            try
            {
                var product = _data.GetProduct(id);
                ViewBag.Product = product;
                var machines = _data.GetMachines();
                return View(machines);
            } catch (Exception)
            {
                return RedirectToAction("IndexProduct");
            }
        }
        [HttpPost]
        public IActionResult ProductMachineAdd(int productId, int machineId)
        {
            try { 
                var product = _data.GetProduct(productId);
                if (product == null)
                    return RedirectToAction("Index");
                ProductBindingModel productBinding = new() { Id = productId, Cost = product.Cost, Name = product.Name, UserId = product.UserId, ProductDetails = product.DetailProducts, MachineId = machineId };
                _data.UpdateProduct(productBinding);
            } catch (Exception)
            { }
            return RedirectToAction("IndexProduct");

        }

        [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
        public IActionResult Error()
        {
            return View();
        }
    }
}