namespace AxCopilot.Services.Agent;

internal static class AgentLoopRuntimeThresholds
{
    public static int GetNoToolCallResponseThreshold(int defaultValue)
        => ResolveThresholdValue(
            Environment.GetEnvironmentVariable("AXCOPILOT_NOTOOL_RESPONSE_THRESHOLD"),
            defaultValue,
            min: 1,
            max: 6);

    public static int GetNoToolCallRecoveryMaxRetries(int defaultValue)
        => ResolveThresholdValue(
            Environment.GetEnvironmentVariable("AXCOPILOT_NOTOOL_RECOVERY_MAX_RETRIES"),
            defaultValue,
            min: 0,
            max: 6);

    public static int GetPlanExecutionRetryMax(int defaultValue)
        => ResolveThresholdValue(
            Environment.GetEnvironmentVariable("AXCOPILOT_PLAN_EXECUTION_RETRY_MAX"),
            defaultValue,
            min: 0,
            max: 6);

    public static int GetTerminalEvidenceGateMaxRetries(int defaultValue)
        => ResolveThresholdValue(
            Environment.GetEnvironmentVariable("AXCOPILOT_TERMINAL_EVIDENCE_GATE_MAX_RETRIES"),
            defaultValue,
            min: 0,
            max: 3);

    public static int ResolveNoToolCallResponseThreshold(string? envRaw)
        => ResolveThresholdValue(envRaw, defaultValue: 2, min: 1, max: 6);

    public static int ResolveNoToolCallRecoveryMaxRetries(string? envRaw)
        => ResolveThresholdValue(envRaw, defaultValue: 3, min: 0, max: 6);

    public static int ResolvePlanExecutionRetryMax(string? envRaw)
        => ResolveThresholdValue(envRaw, defaultValue: 2, min: 0, max: 6);

    public static int ResolveTerminalEvidenceGateMaxRetries(string? envRaw)
        => ResolveThresholdValue(envRaw, defaultValue: 1, min: 0, max: 3);

    private static int ResolveThresholdValue(string? raw, int defaultValue, int min, int max)
    {
        if (!int.TryParse(raw, out var value))
            return defaultValue;

        return Math.Clamp(value, min, max);
    }
}