#!/usr/bin/env node

// [start-readme]
//
// Run this script to check if OpenAPI files can be decorated successfully.
//
// [end-readme]

import fs from 'fs'
import path from 'path'
import glob from 'glob'
import { program } from 'commander'
import getOperations from './utils/get-operations.js'

program
  .description('Generate dereferenced OpenAPI and decorated schema files.')
  .requiredOption(
    '-f, --files [files...]',
    'A list of OpenAPI description files to check. Can parse literal glob patterns.'
  )
  .parse(process.argv)

const filenames = program.opts().files

const filesToCheck = filenames.flatMap((filename) => glob.sync(filename))

if (filesToCheck.length) {
  check(filesToCheck)
} else {
  console.log('No files to verify.')
  process.exit(1)
}

async function check(files) {
  console.log('Verifying OpenAPI files are valid with decorator')
  const documents = files.map((filename) => [
    filename,
    JSON.parse(fs.readFileSync(path.join(process.cwd(), filename))),
  ])

  for (const [filename, schema] of documents) {
    try {
      // munge OpenAPI definitions object in an array of operations objects
      const operations = await getOperations(schema)
      // process each operation, asynchronously rendering markdown and stuff
      await Promise.all(operations.map((operation) => operation.process()))

      console.log(`Successfully could decorate OpenAPI operations for document ${filename}`)
    } catch (error) {
      console.error(error)
      console.log(
        `🐛 Whoops! It looks like the decorator script wasn't able to parse the dereferenced schema in file ${filename}. A recent change may not yet be supported by the decorator. Please reach out in the #docs-engineering slack channel for help.`
      )
      process.exit(1)
    }
  }
}