build.ts

import { readdir, readFile, writeFile, cp } from 'fs/promises'
import { join } from 'path'
import { getMacroDefines } from './scripts/defines.ts'
import { DEFAULT_BUILD_FEATURES } from './scripts/defines.ts'
import { patchNodeFetchWithNativeFetch } from './scripts/bundle-compat.ts'

const outdir = 'dist'

// Step 1: Clean output directory
const { rmSync } = await import('fs')
rmSync(outdir, { recursive: true, force: true })

// Collect FEATURE_* env vars → Bun.build features
const envFeatures = Object.keys(process.env)
  .filter(k => k.startsWith('FEATURE_'))
  .map(k => k.replace('FEATURE_', ''))
const features = [...new Set([...DEFAULT_BUILD_FEATURES, ...envFeatures])]

// Step 2: Bundle with splitting
const result = await Bun.build({
  entrypoints: ['src/entrypoints/cli.tsx'],
  outdir,
  target: 'bun',
  splitting: true,
  define: getMacroDefines(),
  features,
})

if (!result.success) {
  console.error('Build failed:')
  for (const log of result.logs) {
    console.error(log)
  }
  process.exit(1)
}

// Bundle postinstall helpers so the published package does not depend on the
// source tree or raw TypeScript files.
const supportResult = await Bun.build({
  entrypoints: [
    'scripts/gen-poc-catalog.ts',
    'scripts/redscope-proxy-scrape.ts',
  ],
  outdir: join(outdir, 'scripts'),
  target: 'bun',
  splitting: true,
  define: getMacroDefines(),
  features,
})

if (!supportResult.success) {
  console.error('Support script build failed:')
  for (const log of supportResult.logs) {
    console.error(log)
  }
  process.exit(1)
}

// Step 3: Post-process — replace Bun-only `import.meta.require` with Node.js compatible version
const files = await readdir(outdir)
const IMPORT_META_REQUIRE = 'var __require = import.meta.require;'
const COMPAT_REQUIRE = `var __require = typeof import.meta.require === "function" ? import.meta.require : (await import("module")).createRequire(import.meta.url);`

let patched = 0
for (const file of files) {
  if (!file.endsWith('.js')) continue
  const filePath = join(outdir, file)
  const content = await readFile(filePath, 'utf-8')
  if (content.includes(IMPORT_META_REQUIRE)) {
    await writeFile(
      filePath,
      content.replace(IMPORT_META_REQUIRE, COMPAT_REQUIRE),
    )
    patched++
  }
}

// Also patch unguarded globalThis.Bun destructuring from third-party deps
// (e.g. @anthropic-ai/sandbox-runtime) so Node.js doesn't crash at import time.
let bunPatched = 0
let fetchPatched = 0
const BUN_DESTRUCTURE = /var \{([^}]+)\} = globalThis\.Bun;?/g
const BUN_DESTRUCTURE_SAFE =
  'var {$1} = typeof globalThis.Bun !== "undefined" ? globalThis.Bun : {};'
for (const file of files) {
  if (!file.endsWith('.js')) continue
  const filePath = join(outdir, file)
  const content = await readFile(filePath, 'utf-8')
  const bunCompatible = content.replace(
    BUN_DESTRUCTURE,
    (_match, destructured: string) => {
      bunPatched++
      return BUN_DESTRUCTURE_SAFE.replace('$1', destructured)
    },
  )
  const fetchCompatible = patchNodeFetchWithNativeFetch(bunCompatible)
  fetchPatched += fetchCompatible.patched
  if (fetchCompatible.content !== content) {
    await writeFile(filePath, fetchCompatible.content)
  }
}

console.log(
  `Bundled ${result.outputs.length + supportResult.outputs.length} files to ${outdir}/ (patched ${patched} for import.meta.require, ${bunPatched} for Bun destructure, ${fetchPatched} for native fetch)`,
)

// Step 4: Copy native .node addon files (audio-capture) and vendored binaries (ripgrep)
const audioCaptureDir = join(outdir, 'vendor', 'audio-capture')
await cp('vendor/audio-capture', audioCaptureDir, { recursive: true })
console.log(`Copied vendor/audio-capture/ → ${audioCaptureDir}/`)

const ripgrepDir = join(outdir, 'vendor', 'ripgrep')
await cp('src/utils/vendor/ripgrep', ripgrepDir, { recursive: true })
console.log(`Copied src/utils/vendor/ripgrep/ → ${ripgrepDir}/`)

// Step 5: Generate cli-bun and cli-node executable entry points
const cliBun = join(outdir, 'cli-bun.js')
const cliNode = join(outdir, 'cli-node.js')

await writeFile(
  cliBun,
  '#!/usr/bin/env -S bun --no-env-file\nimport "./cli.js"\n',
)

await writeFile(cliNode, '#!/usr/bin/env node\nimport "./cli.js"\n')

// Make both executable
const { chmodSync } = await import('fs')
chmodSync(cliBun, 0o755)
chmodSync(cliNode, 0o755)

console.log(`Generated ${cliBun} (shebang: bun) and ${cliNode} (shebang: node)`)