import fs from 'fs'
import * as TJS from 'typescript-json-schema'
import * as inflection from 'inflection'
import glob from 'glob'

// optionally pass argument to schema generator
const settings: TJS.PartialArgs = {
  required: true,
  ignoreErrors: true,
  uniqueNames: false,
  noExtraProps: true
}

const paths = glob.sync('./src/models/**/*.ts')

export function reverseKebabCase(str: string) {
  const REVERSE_KEBAB_REGEX = /-[a-z\u00E0-\u00F6\u00F8-\u00FE]/g
  return str.replace(REVERSE_KEBAB_REGEX, function (match) {
    return match.slice(1).toUpperCase()
  })
}

const interfaces = paths.map((fileName) => {
  return inflection.singularize(
    inflection.camelize(inflection.underscore(reverseKebabCase(fileName.split('/').pop().replace('.ts', ''))), false)
  )
})

const program = TJS.getProgramFromFiles(paths)

interfaces.map((Type) => {
  // skip external components
  if (Type === 'ExternalComponent') return

  const schema = TJS.generateSchema(program, Type, settings)

  // reverse values in nullable arrays so fasitfy json serialized uses null
  for (var property in schema.properties) {
    const value = schema.properties[property] as any
    if (value.anyOf?.[0]?.type == 'array') {
      schema.properties[property] = {
        anyOf: value.anyOf.reverse()
      }
    }
  }
  fs.writeFileSync(`./src/schemas/${inflection.underscore(Type)}.json`, JSON.stringify(schema, null, 2))
  console.log(`./src/schemas/${inflection.underscore(Type)}.json`)
})