#!/usr/bin/env node

import { readFile } from 'node:fs/promises'
import { pathToFileURL } from 'node:url'

const SEMVER = /^\d+\.\d+\.\d+(?:-[0-9A-Za-z.-]+)?(?:\+[0-9A-Za-z.-]+)?$/

export async function resolveInternalReleaseVersion(configPath, explicitVersion = '') {
  const config = JSON.parse(await readFile(configPath, 'utf8'))
  const configuredVersion = String(config.version ?? '').trim()

  if (!SEMVER.test(configuredVersion)) {
    throw new Error(`tauri.conf.json must contain a valid semantic version; received: ${configuredVersion || '<empty>'}`)
  }

  const requestedVersion = explicitVersion.trim()
  if (requestedVersion && requestedVersion !== configuredVersion) {
    throw new Error(`Requested version ${requestedVersion} does not match configured version ${configuredVersion}`)
  }

  return configuredVersion
}

if (import.meta.url === pathToFileURL(process.argv[1]).href) {
  const configPath = process.argv[2]
  if (!configPath) {
    console.error('Usage: node scripts/internal-release-version.mjs <tauri.conf.json> [expected-version]')
    process.exit(2)
  }

  try {
    console.log(await resolveInternalReleaseVersion(configPath, process.argv[3] ?? ''))
  } catch (error) {
    console.error(error instanceof Error ? error.message : String(error))
    process.exit(1)
  }
}