import type { AgentInvocation, AgentInvocationResult } from "./types";
import { getAgentBySlug } from "./agent";
import log4js from "logger";

const logger = log4js.getLogger("APP");

export async function invokeAgent(invocation: AgentInvocation): Promise<AgentInvocationResult> {
  const { agentSlug, input, context } = invocation;

  const agent = await getAgentBySlug(agentSlug);
  if (!agent) {
    return { agentSlug, output: "", ok: false, error: `agent not found: ${agentSlug}` };
  }

  if (!agent.isCallable) {
    return { agentSlug, output: "", ok: false, error: `agent not callable: ${agentSlug}` };
  }

  logger.warn(
    "[COLLAB] invokeAgent stub called agentSlug=%s inputLen=%d context=%j — orchestration not yet implemented",
    agentSlug,
    input.length,
    context ?? {},
  );

  return {
    agentSlug,
    output: "",
    ok: false,
    error: "agent orchestration not yet implemented",
  };
}