// web-admin/scripts/app-build-meta.ts
import fs from 'node:fs'
import path from 'node:path'

export type AppBuildMeta = {
  version: string
  buildId: string
}

export function readGitShort(run: () => string): string {
  try {
    const text = run().trim()
    return text || 'nogit'
  } catch {
    return 'nogit'
  }
}

export function createAppBuildMeta(version: string, nowMs: number, gitShort: string): AppBuildMeta {
  const hash = gitShort.trim() || 'nogit'
  return { version, buildId: `${hash}-${nowMs}` }
}

export function versionJsonText(meta: AppBuildMeta): string {
  return `${JSON.stringify({ version: meta.version, buildId: meta.buildId }, null, 2)}\n`
}

export function writeVersionJson(outDir: string, meta: AppBuildMeta): void {
  fs.mkdirSync(outDir, { recursive: true })
  fs.writeFileSync(path.join(outDir, 'version.json'), versionJsonText(meta), 'utf8')
}