#!/usr/bin/env node
// List folder names in a directory
const fs = require('fs')
const path = require('path')

const relativePath = process.argv[2]

if (!relativePath) {
  process.stdout.write(JSON.stringify({
    success: false,
    error: 'Missing required parameter: directory path'
  }) + '\n')
  process.exit(1)
}

const staticDir = path.resolve(__dirname, '..', 'static')
const normalizedPath = path.normalize(relativePath).replace(/\\/g, '/')

if (normalizedPath.includes('..') || normalizedPath.startsWith('/')) {
  process.stdout.write(JSON.stringify({
    success: false,
    error: 'Invalid file path'
  }) + '\n')
  process.exit(1)
}

const targetDir = path.resolve(staticDir, normalizedPath)

if (!targetDir.startsWith(staticDir)) {
  process.stdout.write(JSON.stringify({
    success: false,
    error: 'Path must be within static directory'
  }) + '\n')
  process.exit(1)
}

if (!fs.existsSync(targetDir)) {
  process.stdout.write(JSON.stringify({
    success: false,
    error: 'Directory does not exist'
  }) + '\n')
  process.exit(1)
}

const stats = fs.statSync(targetDir)
if (!stats.isDirectory()) {
  process.stdout.write(JSON.stringify({
    success: false,
    error: 'Path is not a directory'
  }) + '\n')
  process.exit(1)
}

const entries = fs.readdirSync(targetDir, { withFileTypes: true })
const folderNames = []

for (const entry of entries) {
  if (entry.isDirectory()) {
    folderNames.push(entry.name)
  }
}

process.stdout.write(JSON.stringify({
  success: true,
  data: folderNames
}) + '\n')
process.exit(0)