import { createHash } from "node:crypto";
import { logAgentObservability } from "@/lib/agent-observability";

export function hashedUserId(userId: string): string {
  return createHash("sha256").update(userId).digest("hex").slice(0, 16);
}

export function logIgnoredSessionMessages(sessionId: string, userId: string, messageCount: number): void {
  logAgentObservability({
    sessionId,
    requestId: `compat-${hashedUserId(userId)}`,
    errorCode: "compat_messages_ignored",
    evidenceCount: Math.max(0, messageCount),
  });
}