import fs from 'node:fs';
import fsp from 'node:fs/promises';
import path from 'node:path';
import process from 'node:process';
import { spawn } from 'node:child_process';

const [, , logPath, ...commandArgs] = process.argv;

if (!logPath || commandArgs.length === 0) {
  process.stderr.write('Usage: node docker/run-with-log-file.mjs <log-path> <command> [args...]\n');
  process.exit(1);
}

await fsp.mkdir(path.dirname(logPath), { recursive: true });

const logStream = fs.createWriteStream(logPath, { flags: 'a' });
const child = spawn(commandArgs[0], commandArgs.slice(1), {
  cwd: process.cwd(),
  env: process.env,
  stdio: ['inherit', 'pipe', 'pipe']
});

function writeChunk(target, chunk) {
  target.write(chunk);
  logStream.write(chunk);
}

child.stdout.on('data', (chunk) => {
  writeChunk(process.stdout, chunk);
});

child.stderr.on('data', (chunk) => {
  writeChunk(process.stderr, chunk);
});

child.on('error', (error) => {
  const message = `${error.stack || error.message}\n`;
  writeChunk(process.stderr, message);
  logStream.end(() => {
    process.exit(1);
  });
});

child.on('close', (code, signal) => {
  logStream.end(() => {
    if (signal) {
      process.kill(process.pid, signal);
      return;
    }

    process.exit(code ?? 1);
  });
});