SPT-Server-Build/Libraries/SPTarkov.Server.Core/Migration/Migrations/HideoutSeed.cs

using System.Security.Cryptography;
using System.Text.Json.Nodes;
using SPTarkov.DI.Annotations;
using Range = SemanticVersioning.Range;

namespace SPTarkov.Server.Core.Migration.Migrations
{
    /// <summary>
    /// In 0.16.1.3.35312 BSG changed this to from an int to a hex64 encoded value.
    /// </summary>
    [Injectable]
    public class HideoutSeed : AbstractProfileMigration
    {
        public override string FromVersion
        {
            get { return "~3.10"; }
        }

        public override string ToVersion
        {
            get { return "3.11"; }
        }

        public override string MigrationName
        {
            get { return "HideoutSeed311-SPTSharp"; }
        }

        public override IEnumerable<Type> PrerequisiteMigrations
        {
            get { return []; }
        }

        public override bool CanMigrate(
            JsonObject profile,
            IEnumerable<IProfileMigration> previouslyRanMigrations
        )
        {
            var profileVersion = GetProfileVersion(profile);
            var fromRange = Range.Parse(FromVersion);
            var versionMatches = fromRange.IsSatisfied(profileVersion);

            var seedNode = profile["characters"]?["pmc"]?["Hideout"]?["Seed"];

            var seedIsNumeric =
                seedNode is JsonValue seedValue && seedValue.TryGetValue<long>(out _);

            return versionMatches && seedIsNumeric;
        }

        public override JsonObject? Migrate(JsonObject profile)
        {
            profile["characters"]!["pmc"]!["Hideout"]!["Seed"] = Convert.ToHexStringLower(
                RandomNumberGenerator.GetBytes(16)
            );

            return profile;
        }
    }
}