import fs from 'node:fs'
import path from 'node:path'

/**
 * Print the names of packages/* whose current version is NOT yet published
 * to the Gitea npm registry. Makes a publish workflow idempotent.
 *
 * Reads publishConfig.registry from each package.json; auth token from env
 * GITEA_NPM_TOKEN. Prints one bare package name per line (suitable for the
 * `pnpm --filter <name> publish` loop). Never prints the token.
 */
const token = process.env.GITEA_NPM_TOKEN
if (!token) {
  console.error('GITEA_NPM_TOKEN not set')
  process.exit(2)
}

const packagesDir = path.resolve('packages')
const unpublished = []

for (const entry of fs.readdirSync(packagesDir, { withFileTypes: true })) {
  if (!entry.isDirectory()) continue
  const pkgPath = path.join(packagesDir, entry.name, 'package.json')
  if (!fs.existsSync(pkgPath)) continue
  const pkg = JSON.parse(fs.readFileSync(pkgPath, 'utf8'))
  if (pkg.private) continue
  const registry = pkg.publishConfig?.registry
  if (!registry) {
    console.error(`skipping ${pkg.name}: no publishConfig.registry`)
    continue
  }
  // Gitea npm registry URL form: .../api/packages/{owner}/npm/<name>
  const esc = (pkg.name).replace('/', '%2F')
  const url = `${registry}${esc}`
  try {
    const res = await fetch(url, {
      headers: { Authorization: `token ${token}` },
    })
    if (res.status === 404) {
      unpublished.push(pkg.name)
    } else if (res.ok) {
      // registry returns 200 when the package exists
      console.error(`already published: ${pkg.name}`)
    } else {
      console.error(`registry check ${pkg.name}: HTTP ${res.status}`)
    }
  } catch (err) {
    console.error(`registry check ${pkg.name} failed: ${err.message}`)
  }
}

if (unpublished.length) {
  process.stdout.write(unpublished.join('\n') + '\n')
}