/**
 * Script to sync manuals from /manuals to /public/manuals
 * This allows static file serving as a backup to the API route
 * Useful for GHL hosting or static deployments
 */

import { readdir, copyFile, mkdir, stat } from 'fs/promises'
import { join } from 'path'
import { existsSync } from 'fs'

const PROJECT_ROOT = join(process.cwd(), '..')
const MANUALS_SOURCE = join(PROJECT_ROOT, 'manuals-data', 'manuals')
const MANUALS_PUBLIC = join(process.cwd(), 'public', 'manuals')

async function syncManuals() {
  try {
    // Create public/manuals directory structure
    if (!existsSync(MANUALS_PUBLIC)) {
      await mkdir(MANUALS_PUBLIC, { recursive: true })
    }

    // Get all manufacturer directories
    const manufacturers = await readdir(MANUALS_SOURCE, { withFileTypes: true })

    for (const manufacturerDir of manufacturers) {
      if (!manufacturerDir.isDirectory()) continue

      const manufacturer = manufacturerDir.name
      const sourcePath = join(MANUALS_SOURCE, manufacturer)
      const destPath = join(MANUALS_PUBLIC, manufacturer)

      // Create manufacturer directory in public
      if (!existsSync(destPath)) {
        await mkdir(destPath, { recursive: true })
      }

      // Get all PDF files
      const files = await readdir(sourcePath, { withFileTypes: true })

      for (const file of files) {
        if (file.isFile() && file.name.toLowerCase().endsWith('.pdf')) {
          const sourceFile = join(sourcePath, file.name)
          const destFile = join(destPath, file.name)

          // Check if file needs updating (compare modification times)
          let shouldCopy = true
          if (existsSync(destFile)) {
            const sourceStats = await stat(sourceFile)
            const destStats = await stat(destFile)
            shouldCopy = sourceStats.mtime > destStats.mtime
          }

          if (shouldCopy) {
            await copyFile(sourceFile, destFile)
            console.log(`Copied: ${manufacturer}/${file.name}`)
          }
        }
      }
    }

    console.log('✅ Manuals synced to public folder successfully!')
  } catch (error) {
    console.error('❌ Error syncing manuals:', error)
    process.exit(1)
  }
}

syncManuals()