// letta's tools — letta's own code (novox/hq ADR 0039). They import letta's own client (../client)
// and plug into the mesh through the sdk's tool harness. Editing them rebuilds letta and nothing
// else. Absent a password they yield no tools rather than a failure.

import { registerModuleTools, type ToolDefinition } from "@novox/mesh-sdk/tools";
import { LettaClient } from "../client.js";

export function getLettaTools(letta: LettaClient): ToolDefinition[] {
  return [
    {
      name: "letta_list_agents",
      description: "List the Letta agents on the server.",
      input: {},
      run: async () => ({ agents: await letta.listAgents() }),
    },
    {
      name: "letta_get_messages",
      description: "Fetch recent messages from a Letta agent's conversation.",
      input: {
        agent_id: { type: "string", description: "the agent id" },
        limit: { type: "number", description: "max messages to return (default 20)" },
      },
      run: async (args) => {
        const agentId = String(args.agent_id);
        const limit = args.limit ? Number(args.limit) : 20;
        return { messages: await letta.getMessages(agentId, limit) };
      },
    },
    {
      name: "letta_send_message",
      description: "Send a user message to a Letta agent and return its reply.",
      input: {
        agent_id: { type: "string", description: "the agent id" },
        text: { type: "string", description: "the message to send" },
      },
      run: async (args) => {
        const agentId = String(args.agent_id);
        const text = String(args.text);
        return { reply: await letta.sendMessage(agentId, text) };
      },
    },
  ];
}

registerModuleTools("letta", (env) => {
  try {
    return getLettaTools(LettaClient.fromEnv(env));
  } catch {
    return [];
  }
});