namespace ICRebuild.Core;

public static class CurrentProtocolEvidence
{
    // Only fill missing names/slots; do not rewrite explicit mappings or the cache file.
    private static readonly (int Opcode,string Name)[] Downstream20260915 =
    [
        (338,"DOWN_PingRsp"),
        (671,"DOWN_UpdateHate"),
        (558,"DOWN_UpdateHater"),
        (697,"DOWN_EffectResultBasic"),
        // ActorGauge already exists at a different explicit slot in the cache; use an evidence label.
        (614,"DOWN_JobGauge"),
        (788,"DOWN_UpdateClassInfo"),
        (214,"DOWN_FirstAttack")
    ];

    private static readonly (int Opcode,string Name)[] Downstream20261006 =
    [
        (581,"DOWN_PingRsp"),
        (673,"DOWN_UpdateHate"),
        (171,"DOWN_UpdateHater"),
        (549,"DOWN_EffectResultBasic"),
        (748,"DOWN_JobGauge"),
        (592,"DOWN_UpdateClassInfo"),
        (374,"DOWN_FirstAttack")
    ];

    public static int AddMissing(string version,Dictionary<int,string> down)
    {
        var evidence = version switch
        {
            PacketParser.AuditedClientVersion => Downstream20261006,
            PacketParser.BaselineClientVersion => Downstream20260915,
            _ => null
        };
        if(evidence == null) return 0;
        var added=0;
        foreach(var (opcode,name) in evidence)
            if(!down.ContainsKey(opcode) && !down.ContainsValue(name)) { down[opcode]=name; added++; }
        return added;
    }
}