using System;

using System.Collections.Generic;

using System.Text.Json;

using System.Text.Json.Serialization;

​

public class Offer

{

    [JsonPropertyName("offerId")]

    public long OfferId { get; set; }

​

    [JsonPropertyName("metadata")]

    public Metadata Metadata { get; set; }

}

​

public class Metadata

{

    [JsonPropertyName("score")]

    public double Score { get; set; }

​

    [JsonPropertyName("algorithm")]

    public string Algorithm { get; set; }

​

    [JsonPropertyName("marker")]

    public string Marker { get; set; }

​

    [JsonPropertyName("additionalInfo")]

    public AdditionalInfo AdditionalInfo { get; set; }

}

​

public class AdditionalInfo

{

    [JsonPropertyName("algorithm")]

    public string Algorithm { get; set; }

​

    [JsonPropertyName("cluster")]

    public string Cluster { get; set; }

​

    [JsonPropertyName("displayOption")]

    public string DisplayOption { get; set; }

​

    [JsonPropertyName("seen")]

    public string Seen { get; set; }

}

​

public class Program

{

     public static string GetClusterName(Offer offer) {

         if(offer.Metadata.AdditionalInfo.Seen == "true") return "last";

         return $"{offer.Metadata.AdditionalInfo.Algorithm}_{offer.Metadata.AdditionalInfo.Cluster}";

     }

     public static List<List<Offer>> SplitOffersIntoLists(List<Offer> offers)

        {

        var result = new List<List<Offer>>();

         Offer last = null;

         List<Offer> current = new List<Offer>();;

         for(int i=0; i< offers.Count; i++){

             if(last == null) {

                 last=offers[i];

                 current.Add(offers[i]);

             }

             if(GetClusterName(last) != GetClusterName(offers[i])){

                 result.Add(current);

                 current = new List<Offer>();

                 last=offers[i];

                  current.Add(offers[i]);

             }else {

                last=offers[i];

                 current.Add(offers[i]);

             }

         }

             result.Add(current);

return result;

             }

    public static void Main()

    {

        string json = @"[{

            ""offerId"": 1003631647,

            ""metadata"": {

                ""score"": 1.0927596,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""0""

                }

            }

        }, {

            ""offerId"": 1003606341,

            ""metadata"": {

                ""score"": 2.0550692,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""0""

                }

            }

        }, {

            ""offerId"": 1003618621,

            ""metadata"": {

                ""score"": 0.71012014,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""1"",

                    ""displayOption"": ""nologo""

                }

            }

        }, {

            ""offerId"": 1003614886,

            ""metadata"": {

                ""score"": 1.0390474,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""1""

                }

            }

        }, {

            ""offerId"": 1003607304,

            ""metadata"": {

                ""score"": 0.8563693,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""1""

                }

            }

        }, {

            ""offerId"": 1003594686,

            ""metadata"": {

                ""score"": 1.0251304,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""1""

                }

            }

        }, {

            ""offerId"": 1003588600,

            ""metadata"": {

                ""score"": 0.67773545,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""1""

                }

            }

        }, {

            ""offerId"": 1003615894,

            ""metadata"": {

                ""score"": 0.6188422,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""1""

                }

            }

        }, {

            ""offerId"": 1003606865,

            ""metadata"": {

                ""score"": 0.75839144,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""1"",

                    ""displayOption"": ""nologo""

                }

            }

        }, {

            ""offerId"": 1003597175,

            ""metadata"": {

                ""score"": 0.2965071,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B_promoted"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""2""

                }

            }

        }, {

            ""offerId"": 1003623933,

            ""metadata"": {

                ""score"": 0.3030039,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""2"",

                    ""displayOption"": ""nologo""

                }

            }

        }, {

            ""offerId"": 1003620215,

            ""metadata"": {

                ""score"": 0.5532534,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""2""

                }

            }

        }, {

            ""offerId"": 1003592500,

            ""metadata"": {

                ""score"": 0.27763984,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""2""

                }

            }

        }, {

            ""offerId"": 1003640254,

            ""metadata"": {

                ""score"": 0.32285815,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""2""

                }

            }

        }, {

            ""offerId"": 1003614124,

            ""metadata"": {

                ""score"": 0.3346293,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""2""

                }

            }

        }, {

            ""offerId"": 1003607090,

            ""metadata"": {

                ""score"": 0.3891952,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""2""

                }

            }

        }, {

            ""offerId"": 1003620768,

            ""metadata"": {

                ""score"": 0.3440282,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""2""

                }

            }

        }, {

            ""offerId"": 1003619592,

            ""metadata"": {

                ""score"": 0.28745067,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""2""

                }

            }

        }, {

            ""offerId"": 1003613236,

            ""metadata"": {

                ""score"": 0.32605743,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""2"",

                    ""displayOption"": ""nologo""

                }

            }

        }, {

            ""offerId"": 1003650834,

            ""metadata"": {

                ""score"": 0.27893394,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""2""

                }

            }

        }, {

            ""offerId"": 1003637154,

            ""metadata"": {

                ""score"": 0.27570513,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""3""

                }

            }

        }, {

            ""offerId"": 1003641769,

            ""metadata"": {

                ""score"": 0.28464633,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""1"",

                    ""cluster"": ""0""

                }

            }

        }, {

            ""offerId"": 1003600683,

            ""metadata"": {

                ""score"": 0.5018722,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""1"",

                    ""cluster"": ""0""

                }

            }

        }, {

            ""offerId"": 1003616620,

            ""metadata"": {

                ""score"": 0.44298926,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""2"",

                    ""seen"": ""true""

                }

            }

        }, {

            ""offerId"": 1003626360,

            ""metadata"": {

                ""score"": 0.9859008,

                ""algorithm"": ""bd"",

                ""marker"": ""tname_214_tgroup_B_promoted"",

                ""additionalInfo"": {

                    ""algorithm"": ""0"",

                    ""cluster"": ""1"",

                    ""seen"": ""true""

                }

            }

        }]";

​

        List<Offer> offers = JsonSerializer.Deserialize<List<Offer>>(json);

        foreach (var sublist in SplitOffersIntoLists(offers))

{

            Console.WriteLine("CLUSTER=================================");

    foreach (var offer in sublist)

    {

         Console.WriteLine($"  OfferId: {offer.OfferId}, Cluster: {offer.Metadata.AdditionalInfo.Cluster}, Algorithm: {offer.Metadata.AdditionalInfo.Algorithm}");

    }

}

​

    }

}

​