RhSolutions-Api/RhSolutions.Api/Services/TPieceQueryModifier.cs

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

namespace RhSolutions.Api.Services
{
    public class TPieceQueryModifier : IProductQueryModifier
    {
        private readonly string pattern = @"16|20|25|32|40|50|63";

        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);
            StringBuilder sb = new();
            sb.Append("Тройник RAUTITAN -PLATINUM");
            if (matches.Count == 1)
            {
                sb.Append($" {matches.First().Value}-{matches.First().Value}-{matches.First().Value}");
            }
            else if (matches.Count >= 3)
            {
                sb.Append($" {matches[0].Value}-{matches[1].Value}-{matches[2].Value}");
            }
            else
            {
                return false;
            }
            QueryBuilder qb = new()
            {
                { "query", sb.ToString() }
            };
            queryString = qb.ToQueryString();
            return true;
        }
    }
}