namespace KArtSell.Modules.SignalEngine.Domain;

public enum PolicyDisposition
{
    NotApplicable = 0,
    Blocked = 1,
    Applied = 2
}

public sealed record PolicyTraceEntry(
    string PolicyId,
    int Priority,
    PolicyDisposition Disposition,
    string ReasonCode,
    decimal RequestedSellRatioOfLot,
    decimal AppliedSellRatioOfLot,
    bool StrategicCoreClampApplied);

public sealed record SellPolicyResult(
    PolicyTraceEntry Trace,
    SellDecision? Decision)
{
    public static SellPolicyResult NotApplicable(string policyId, int priority, string reasonCode)
        => new(new PolicyTraceEntry(policyId, priority, PolicyDisposition.NotApplicable, reasonCode, 0m, 0m, false), null);

    public static SellPolicyResult Blocked(
        string policyId,
        int priority,
        string reasonCode,
        decimal requestedSellRatioOfLot = 0m)
        => new(new PolicyTraceEntry(
            policyId,
            priority,
            PolicyDisposition.Blocked,
            reasonCode,
            requestedSellRatioOfLot,
            0m,
            false), null);

    public static SellPolicyResult Applied(
        SellDecision decision,
        decimal requestedSellRatioOfLot,
        bool strategicCoreClampApplied)
        => new(new PolicyTraceEntry(
            decision.PolicyId,
            decision.Priority,
            PolicyDisposition.Applied,
            decision.ReasonCode,
            requestedSellRatioOfLot,
            decision.SellRatioOfLot,
            strategicCoreClampApplied), decision);
}