1 files changed, 39 insertions, 0 deletions
diff --git a/RhSolutions.QueryModifiers/AdapterModifier.cs b/RhSolutions.QueryModifiers/AdapterModifier.cs
new file mode 100644
index 0000000..0ebe40d
--- /dev/null
+++ b/RhSolutions.QueryModifiers/AdapterModifier.cs
@@ -0,0 +1,39 @@
+using System.Text.RegularExpressions;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Http.Extensions;
+
+namespace RhSolutions.QueryModifiers
+{
+    public abstract class AdapterModifier : IProductQueryModifier
+	{
+		protected string pattern { get; } =
+			@"(?<Diameter>\b16|20|25|32|40|50|63\b)\D+(?<Thread>\b1\s+1/4|1\s+1/2|1/2|3/4|2|1\b)";
+		protected virtual string name { get; } = string.Empty;
+		public bool TryQueryModify(IQueryCollection collection, out QueryString queryString)
+		{
+			queryString = QueryString.Empty;
+			var query = collection["query"].ToString();
+			if (string.IsNullOrEmpty(query))
+			{
+				return false;
+			}
+			var matches = Regex.Matches(query, pattern);
+			if (matches.Count == 0)
+			{
+				return false;
+			}
+			else
+			{
+				var match = matches.First();
+				var diameter = match.Groups["Diameter"].Captures.First();
+				var thread = match.Groups["Thread"].Captures.First();
+				QueryBuilder qb = new()
+				{
+					{"query", $"{name} {diameter} {thread}"}
+				};
+				queryString = qb.ToQueryString();
+				return true;
+			}
+		}
+	}
+}