3 files changed, 110 insertions, 0 deletions
diff --git a/Source/Assistant/IProduct.cs b/Source/Assistant/IProduct.cs
new file mode 100644
index 0000000..aca3ff5
--- /dev/null
+++ b/Source/Assistant/IProduct.cs
@@ -0,0 +1,9 @@
+namespace Rehau.Sku.Assist
+{
+    interface IProduct
+    {
+        string Sku { get; }
+        string Name { get; }
+        string Uri { get; }
+    }
+}
diff --git a/Source/Assistant/Product.cs b/Source/Assistant/Product.cs
new file mode 100644
index 0000000..17a7065
--- /dev/null
+++ b/Source/Assistant/Product.cs
@@ -0,0 +1,21 @@
+namespace Rehau.Sku.Assist
+{
+    public class Product : IProduct
+    {
+        public string Sku { get; }
+        public string Name { get; }
+
+        public string Uri => throw new System.NotImplementedException();
+
+        public Product(string sku, string name)
+        {
+            Sku = sku;
+            Name = name;
+        }
+
+        public override string ToString()
+        {
+            return $"{this.Name} ({this.Sku})";
+        }
+    }
+}
+\ No newline at end of file
diff --git a/Source/Assistant/SkuAssist.cs b/Source/Assistant/SkuAssist.cs
new file mode 100644
index 0000000..152dbbb
--- /dev/null
+++ b/Source/Assistant/SkuAssist.cs
@@ -0,0 +1,80 @@
+using AngleSharp;
+using AngleSharp.Dom;
+using System;
+using System.Linq;
+using System.Net;
+using System.Net.Http;
+using System.Threading.Tasks;
+
+namespace Rehau.Sku.Assist
+{
+    static class SkuAssist
+    {
+        private static HttpClient _httpClient;
+        private enum ResponseOrder
+        {
+            NoSettings,
+            Relevance,
+            Name,
+            Price,
+            Series
+        }
+        private static void _EnsureHttpClientRunning()
+        {
+            if (_httpClient == null)
+                _httpClient = new HttpClient();
+        }
+
+        public async static Task<string> GetContent(string request)
+        {
+            Uri uri = _ConvertToUri(request, ResponseOrder.NoSettings);
+            _EnsureHttpClientRunning();
+            ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;
+
+            return await _httpClient.GetStringAsync(uri);
+        }
+
+        public async static Task<IDocument> GetDocument(Task<string> source)
+        {
+            IConfiguration config = Configuration.Default;
+            IBrowsingContext context = BrowsingContext.New(config);
+
+            return await context.OpenAsync(req => req.Content(source.Result));
+        }
+
+        public static IProduct GetProductFromDocument(IDocument document)
+        {
+            return document
+                .All
+                .Where(e => e.ClassName == "product-item__desc-top")
+                .Select(e => new Product(e.Children[0].TextContent, e.Children[1].TextContent.Trim(new[] { '\n', ' ' })))
+                .FirstOrDefault();
+        }
+
+        private static Uri _ConvertToUri(this string request, ResponseOrder order)
+        {
+            string cleanedRequest = request._CleanRequest();
+            switch (order)
+            {
+                case ResponseOrder.Relevance:
+                    return new Uri("https://shop-rehau.ru/catalogsearch/result/index/?dir=asc&order=relevance&q=" + cleanedRequest);
+                case ResponseOrder.Name:
+                    return new Uri("https://shop-rehau.ru/catalogsearch/result/index/?dir=asc&order=name&q=" + cleanedRequest);
+                case ResponseOrder.Price:
+                    return new Uri("https://shop-rehau.ru/catalogsearch/result/index/?dir=asc&order=price&q=" + cleanedRequest);
+                case ResponseOrder.Series:
+                    return new Uri("https://shop-rehau.ru/catalogsearch/result/index/?dir=asc&order=sch_product_series&q=" + cleanedRequest);
+                case ResponseOrder.NoSettings:
+                    return new Uri("https://shop-rehau.ru/catalogsearch/result/?q=" + cleanedRequest);
+                default:
+                    throw new ArgumentException();
+            }
+        }
+        private static string _CleanRequest(this string input)
+        {
+            return input.Replace("+", " plus ");
+        }
+    }
+}
+
+