using Microsoft.EntityFrameworkCore;
using PartSource.Automation.Jobs.Interfaces;
using PartSource.Automation.Models;
using PartSource.Data;
using PartSource.Data.Models;
using Ratermania.Shopify;
using Ratermania.Shopify.Resources;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace PartSource.Automation.Jobs
{
	public class AddAndUpdateProducts : IAutomationJob
	{
		private readonly PartSourceContext _partSourceContext;
		private readonly ShopifyClient _shopifyClient;

		public AddAndUpdateProducts(PartSourceContext partSourceContext, ShopifyClient shopifyClient)
		{
			_partSourceContext = partSourceContext;
			_shopifyClient = shopifyClient;
		}


		public async Task<AutomationJobResult> Run()
		{
			//throw new Exception("You need to add a ProductVariant resource to the Shopify client");

			await SyncronizeIdsAndSkus();
			//await AddSkus();
		//	await AddVariants();

			return new AutomationJobResult
			{
				IsSuccess = true
			};
		}

		/// <summary>
		/// Ensures syncronization between Shopify IDs and Partsource SKUs
		/// </summary>
		private async Task SyncronizeIdsAndSkus()
		{
			IEnumerable<Product> products = await _shopifyClient.Products.Get();

			_partSourceContext.Database.ExecuteSqlCommand("UPDATE ImportData SET ShopifyId = NULL");

			while (products != null && products.Any())
			{
				foreach (Product product in products)
				{
					foreach (Variant variant in product.Variants)
					{
						ImportData importData = _partSourceContext.ImportData.FirstOrDefault(i => i.VariantSku == variant.Sku);

						if (importData != null)
						{
							importData.ShopifyId = product.Id;
						}
					}
				}

				await _partSourceContext.SaveChangesAsync();

				try
				{
					products = await _shopifyClient.Products.GetNext();
				}

				catch
				{
					products = await _shopifyClient.Products.GetPrevious();
				}
			}
		}


		public async Task AddSkus()
		{
			IList<ImportData> items = _partSourceContext.ImportData
				.Where(i => i.IsVariant == null && i.ShopifyId == null)
				//	.OrderBy(i => i.Title)
				.ToList();

			//	items = items.Where(i => i.Title == items.First().Title).ToList();
	//
			foreach (ImportData importData in items)
			{
				try
				{
					// Images
					IList<ProductImage> productImages = new List<ProductImage>();

					if (!string.IsNullOrEmpty(importData.ImageSrc))
					{
						foreach (string src in importData?.ImageSrc.Split(','))
						{
							productImages.Add(new ProductImage
							{
								Src = src,
								Alt = importData.ImageAltText
							});
						}

						if (productImages.Count > 0)
						{
							productImages.Add(new ProductImage
							{
								Src = "https://cdn.shopify.com/s/files/1/2239/4255/files/No_Image_Found.jpg",
								Alt = "No Image Found"
							});
						}
					}

					// Product Tags
					List<string> productTags = new List<string>
				{
					items[0].LineCode,
					items[0].PartNumber,
				};

					//List<ProductVariant> productVariants = new List<ProductVariant>();

					////foreach (ImportData itemVariant in items)
					////{
					//productVariants.Add(new ProductVariant
					//{
					//	InventoryPolicy = "Deny",
					//	CompareAtPrice = importData.CompareAt,
					//	Price = importData.Price,
					//	Sku = importData.VariantSku,
					//	Title = importData.VariantTitle ?? importData.Title,
					//	Option1 = importData.VariantTitle,
					//	RequiresShipping = false,
					//});
					//}



					Product requestData = new Product
					{
						BodyHtml = importData.BodyHtml,
						Title = importData.Title,
						Vendor = importData.Vendor,
						Tags = string.Join(",", productTags),
						Published = true,
						//ProductType = importData.FINELINE_NM,
						Images = productImages.ToArray(),
						//Variants = productVariants.ToArray(),
						CreatedAt = DateTime.Now,
						UpdatedAt = DateTime.Now
					};

					requestData = await _shopifyClient.Products.Add(requestData);

					if (requestData.Id > 0)
					{
						//foreach (ImportData variant in items)
						//{
						//	variant.ShopifyId = requestData.Id;
						//}

						importData.ShopifyId = requestData.Id;
						_partSourceContext.SaveChanges();


						Console.WriteLine($"{importData.VariantSku}");
					}

					else
					{
						Console.WriteLine($"SHOPIFY ID WAS 0 - {importData.VariantSku}");
					}
				}

				catch (Exception ex)
				{
					Console.WriteLine($"Failed to add SKU {importData.VariantSku}: {ex.StackTrace}");
				}

				//items = _partSourceContext.ImportData
				//	.Where(i => i.Title == _partSourceContext.ImportData.First(d => d.ShopifyId == null).Title)
				//	.ToList();
			}
		}

		public async Task AddVariants()
		{
			IList<ImportData> items = _partSourceContext.ImportData
				.Where(i => i.IsVariant.Value && i.ShopifyId == null)
				.OrderBy(i => i.Title)
				.ToList();

			items = items.Where(i => i.Title == items.First().Title).ToList();

			while (items != null && items.Count > 0)
			{
				// Images
				IList<ProductImage> productImages = new List<ProductImage>();

				if (!string.IsNullOrEmpty(items[0].ImageSrc))
				{
					productImages = items.SelectMany(v =>
					{
						IList<ProductImage> images = new List<ProductImage>();

						foreach (string src in v.ImageSrc?.Split(','))
						{
							images.Add(new ProductImage
							{
								Src = src,
								Alt = v.ImageAltText
							});
						}

						return images;
					}).ToList();

					if (productImages.Count > 0)
					{
						productImages.Add(new ProductImage
						{
							Src = "https://cdn.shopify.com/s/files/1/2239/4255/files/No_Image_Found.jpg",
							Alt = "No Image Found"
						});
					}
				}


				// Product Tags
				List<string> productTags = new List<string>
				{
					items[0].LineCode,
					items[0].PartNumber,
				};

				//List<ProductVariant> productVariants = new List<ProductVariant>();

				//foreach (ImportData itemVariant in items)
				//{
				//	productVariants.Add(new ProductVariant
				//	{
				//		InventoryPolicy = "Deny",
				//		CompareAtPrice = itemVariant.CompareAt,
				//		Price = itemVariant.Price,
				//		Sku = itemVariant.VariantSku,
				//		Title = itemVariant.VariantTitle,
				//		Option1 = itemVariant.VariantTitle,
				//		RequiresShipping = false,
				//	});
				//}


				Product requestData = new Product
				{
					BodyHtml = items[0].BodyHtml,
					Title = items[0].Title,
					Vendor = items[0].Vendor,
					Tags = string.Join(",", productTags),
					Published = true,
					//ProductType = importData.FINELINE_NM,
					Images = productImages.ToArray(),
					//Variants = productVariants.ToArray(),
					CreatedAt = DateTime.Now,
					UpdatedAt = DateTime.Now
				};

				requestData = await _shopifyClient.Products.Add(requestData);

				if (requestData.Id > 0)
				{
					foreach (ImportData variant in items)
					{
						variant.ShopifyId = requestData.Id;
					}

					_partSourceContext.SaveChanges();

					Console.WriteLine($"{items[0].VariantSku}");
				}

				else
				{
					Console.WriteLine($"SHOPIFY ID WAS 0 - {items[0].VariantSku}");
				}

				ImportData next = _partSourceContext.ImportData.FirstOrDefault(i => i.IsVariant != null && i.ShopifyId == null);

				if (next != null)
				{
					items = _partSourceContext.ImportData
						.Where(i => i.Title == next.Title)
						.ToList();
				}

				else
				{
					items = null;
				}
			}
		}
	}

	//private void Log(string message)
	//{
	//	try
	//	{
	//		using (FileStream fileStream = File.OpenWrite(@"C:\users\tommy\desktop\log.txt"))
	//		{
	//			fileStream.Write(Encoding.UTF8.GetBytes(message + "\n"));
	//		}
	//	}

	//	catch
	//	{
	//		// LOL Fix this
	//		Log(message);
	//	}
	//}
}