RhSolutions-Api/RhSolutions.Api/Services/CouplingModifier.cs

using System.Text.RegularExpressions;
using Microsoft.AspNetCore.Http.Extensions;

namespace RhSolutions.Api.Services
{
	public class CouplingModifier : IProductQueryModifier
	{
		private string pattern { get; } = @"\b(16|20|25|32|40|50|63)\b";
		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 < 1)
			{
				return false;
			}
			else
			{
				QueryBuilder qb = new();
				if (matches.Count < 2 || matches.Count > 1 && matches[0].Value == matches[1].Value)
				{
					qb.Add("query", $"Муфта соединительная равнопроходная {matches[0]}");
				}
				else 
				{
					qb.Add("query", $"Муфта соединительная переходная {matches[0]}-{matches[1]}");
				}
				queryString = qb.ToQueryString();
				return true;
			}
		}
	}
}