RhSolutions-Api/RhSolutions.QueryModifiers/AdapterModifier.cs

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;
			}
		}
	}
}