/**
 * Offload Log Tailer (Local)
 * 
 * Tails the latest remote logs for a specific job.
 */
import { spawnSync } from 'child_process';
import path from 'path';
import fs from 'fs';
import { fileURLToPath } from 'url';

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const REPO_ROOT = path.resolve(__dirname, '../../../..');

export async function runLogs(args: string[]) {
  const prNumber = args[0];
  const action = args[1] || 'review';
  
  if (!prNumber) {
    console.error('Usage: npm run offload:logs <PR_NUMBER> [action]');
    return 1;
  }

  const settingsPath = path.join(REPO_ROOT, '.gemini/settings.json');
  const settings = JSON.parse(fs.readFileSync(settingsPath, 'utf8'));
  const config = settings.maintainer?.deepReview;
  const { remoteHost, remoteHome } = config;

  const jobDir = `${remoteHome}/dev/worktrees/offload-${prNumber}-${action}`;
  const logDir = `${jobDir}/.gemini/logs`;

  console.log(`📋 Tailing latest logs for job ${prNumber}-${action}...`);

  // Remote command to find the latest log file and tail it
  const tailCmd = `
    latest_log=$(ls -t ${logDir}/*.log 2>/dev/null | head -n 1)
    if [ -z "$latest_log" ]; then
      echo "❌ No logs found for this job yet."
      exit 1
    fi
    echo "📄 Tailing: $latest_log"
    tail -f "$latest_log"
  `;

  spawnSync(`ssh ${remoteHost} ${JSON.stringify(tailCmd)}`, { stdio: 'inherit', shell: true });
  return 0;
}

if (import.meta.url === `file://${process.argv[1]}`) {
  runLogs(process.argv.slice(2)).catch(console.error);
}