// Publishes the package for a branch: `main` → `latest`, `next` → `next`, any other branch →
// `dev-<branch>`. Usage: node scripts/publish.mjs <branch> [--dry-run]
//
// `main` publishes the version in package.json as is, and skips if it is already published (bump
// the version to release). Other branches publish a prerelease, `<version>-<tag>.<timestamp>`,
// so every push gets its own version. The registry and its token come from `.npmrc` / npm config.
import { execFileSync } from 'node:child_process'
import { readFileSync, writeFileSync } from 'node:fs'

const [branch, ...flags] = process.argv.slice(2)
if (!branch) throw new Error('Usage: node scripts/publish.mjs <branch> [--dry-run]')
const dryRun = flags.includes('--dry-run')

const npm = (...args) => execFileSync('npm', args, { encoding: 'utf8', stdio: ['ignore', 'pipe', 'inherit'] }).trim()

const pkg = JSON.parse(readFileSync('package.json', 'utf8'))
const base = pkg.version.replace(/\+.*/, '')
const tag = branch === 'main' ? 'latest' : branch === 'next' ? 'next' : `dev-${branch.replace(/[^0-9A-Za-z-]/g, '-')}`

if (tag === 'latest') {
  let published = ''
  try {
    published = npm('view', `${pkg.name}@${base}`, 'version')
  } catch {
    // Not found (or the package doesn't exist yet): publish it.
  }
  if (published) {
    console.log(`${pkg.name}@${base} is already published; bump the version in package.json to release.`)
    process.exit(0)
  }
} else {
  const timestamp = new Date().toISOString().replace(/\D/g, '')
  pkg.version = `${base}${base.includes('-') ? '.' : '-'}${tag}.${timestamp}`
  writeFileSync('package.json', `${JSON.stringify(pkg, null, 2)}\n`)
}

console.log(`Publishing ${pkg.name}@${pkg.version} with tag "${tag}"`)
execFileSync('npm', ['publish', '--tag', tag, ...(dryRun ? ['--dry-run'] : [])], { stdio: 'inherit' })