1 files changed, 48 insertions, 0 deletions
diff --git a/RhSolutions.QueryModifiers/Heating/HeatingFittingBase.cs b/RhSolutions.QueryModifiers/Heating/HeatingFittingBase.cs
new file mode 100644
index 0000000..672bd6b
--- /dev/null
+++ b/RhSolutions.QueryModifiers/Heating/HeatingFittingBase.cs
@@ -0,0 +1,48 @@
+using System.Text.RegularExpressions;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Http.Extensions;
+
+namespace RhSolutions.QueryModifiers.Heating;
+
+public abstract class HeatingFittingBase : IProductQueryModifier
+{
+	protected static readonly Regex _diameter =
+		new(@"([\b\D]|^)(?<Diameter>16|20|25|32|40|50|63)([\b\D]|$)");
+	protected static readonly Regex _angle =
+		new(@"([\b\D]|^)(?<Angle>45|90)([\b\D]|$)");
+	protected static readonly Regex _thread =
+		new(@"(\D|^)(?<Thread>1\s+1/4|1\s+1/2|1/2|3/4|2|1)(\D|$)");
+
+	protected virtual string _title { get; } = string.Empty;
+
+	public bool TryQueryModify(IQueryCollection collection, out QueryString queryString)
+	{
+		queryString = QueryString.Empty;
+		string query = collection["query"].ToString();
+		if (string.IsNullOrEmpty(query))
+		{
+			return false;
+		}
+		string? result = BuildRhSolutionsName(query);
+		if (result != null)
+		{
+			QueryBuilder qb = new()
+			{
+				{ "query", result }
+			};
+			queryString = qb.ToQueryString();
+			return true;
+		}
+		return false;
+	}
+
+	protected virtual string? BuildRhSolutionsName(string query)
+	{
+		var match = _diameter.Match(query);
+		if (match.Success)
+		{
+			return $"{_title} {match.Groups["Diameter"]}";
+		}
+		return null;
+	}
+}
+\ No newline at end of file