import { dirname, join } from "node:path";
import * as readline from "node:readline";
import { fileURLToPath } from "node:url";
import { RpcClient } from "../src/modes/rpc/rpc-client.js";

const __dirname = dirname(fileURLToPath(import.meta.url));

/**
 * Interactive example of using coding-agent via RpcClient.
 * Usage: npx tsx test/rpc-example.ts
 */

async function main() {
  const client = new RpcClient({
    cliPath: join(__dirname, "../dist/cli.js"),
    provider: "anthropic",
    model: "claude-sonnet-4-20250514",
    args: ["--no-session"],
  });

  // Stream events to console
  client.onEvent((event) => {
    if (event.type === "message_update") {
      const { assistantMessageEvent } = event;
      if (
        assistantMessageEvent.type === "text_delta" ||
        assistantMessageEvent.type === "thinking_delta"
      ) {
        process.stdout.write(assistantMessageEvent.delta);
      }
    }

    if (event.type === "tool_execution_start") {
      console.log(`\n[Tool: ${event.toolName}]`);
    }

    if (event.type === "tool_execution_end") {
      console.log(
        `[Result: ${JSON.stringify(event.result).slice(0, 200)}...]\n`,
      );
    }
  });

  await client.start();

  const state = await client.getState();
  console.log(`Model: ${state.model?.provider}/${state.model?.id}`);
  console.log(`Thinking: ${state.thinkingLevel ?? "off"}\n`);

  // Handle user input
  const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
    terminal: true,
  });

  let isWaiting = false;

  const prompt = () => {
    if (!isWaiting) process.stdout.write("You: ");
  };

  rl.on("line", async (line) => {
    if (isWaiting) return;
    if (line.trim() === "exit") {
      await client.stop();
      process.exit(0);
    }

    isWaiting = true;
    await client.promptAndWait(line);
    console.log("\n");
    isWaiting = false;
    prompt();
  });

  rl.on("SIGINT", () => {
    if (isWaiting) {
      console.log("\n[Aborting...]");
      client.abort();
    } else {
      client.stop();
      process.exit(0);
    }
  });

  console.log("Interactive RPC example. Type 'exit' to quit.\n");
  prompt();
}

main().catch(console.error);