import { existsSync, mkdirSync } from 'node:fs'
import path from 'node:path'
import { spawnSync } from 'node:child_process'
import { fileURLToPath } from 'node:url'

const rootDir = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..')
const entrypoint = path.join(rootDir, 'src/bun/deeplink.js')

export function buildWindowsDeeplinkExe(outputPath) {
  if (!existsSync(entrypoint)) {
    throw new Error(`build-windows-deeplink: entrypoint not found: ${entrypoint}`)
  }

  mkdirSync(path.dirname(outputPath), { recursive: true })

  const target = process.env.ELECTROBUN_ARCH === 'arm64'
    ? 'bun-windows-x64'
    : 'bun-windows-x64'

  const result = spawnSync(
    'bun',
    [
      'build',
      '--compile',
      '--minify',
      `--target=${target}`,
      entrypoint,
      '--outfile',
      outputPath
    ],
    {
      cwd: rootDir,
      stdio: 'inherit',
      env: process.env
    }
  )

  if (result.status !== 0) {
    throw new Error(
      `build-windows-deeplink: bun build failed with exit code ${result.status ?? 1}`
    )
  }

  if (!existsSync(outputPath)) {
    throw new Error(`build-windows-deeplink: output not created: ${outputPath}`)
  }

  console.log(`build-windows-deeplink: created ${outputPath}`)
  return outputPath
}

if (process.argv[1] === fileURLToPath(import.meta.url)) {
  const outputArg = process.argv[2]
  if (!outputArg) {
    console.error('Usage: bun scripts/build-windows-deeplink.mjs <output-path>')
    process.exit(1)
  }

  buildWindowsDeeplinkExe(path.resolve(outputArg))
}