Sketch file translation plugin

export default function () {
  const doc = sketch.getSelectedDocument()
  const selectedLayers = doc.selectedLayers
  const selectedCount = selectedLayers.length
  let values;
  if (selectedCount === 0) {
    sketch.UI.message('No layers are selected.')
  } else {
    UI.getInputFromUser(
      "What language should we translate to?",
      {
        type: UI.INPUT_TYPE.selection,
        possibleValues: ['Arabic,ar',
          'Bengali,bn',
          'English,en',
          'Gujarati,gu',
          'Hindi,hi',
          'Japanese,ja',
          'Korean,ko',
          'Malayalam,ml',
          'Marathi,mr',
          'Odia (Oriya),or',
          'Pashto,ps',
          'Punjabi,pa',
          'Sindhi,sd',
          'Tamil,ta',
          'Telugu,te',
          'Urdu,ur'],
        description: "Full list of languages https://cloud.google.com/translate/docs/languages"
      },
      (err, value) => {
        if (err) {
          // most likely the user canceled the input
          return
        }
        selectedLayers.forEach(function (layer) {
         // let source_text = layer.text
          let translated_text = fetch_lang_prefs(layer, locale); // fetch translated strings from google translate API
          UI.message(`Updated ${selectedLayers.length} text layers with ${value.split(",")[0]} language`)
        }
        )
      }
    )

  }
}

const google_translate_fetch_translation_endpoint = "https://translation.googleapis.com/language/translate/v2?key=$YOUR_API_KEY";
export function fetch_translated_text(layer, locale) {
  
  let data = {
    "q": layer.text, //current value in layer
    "target": locale, // target locale code
    "source": "en" // I'm defaulting to english as source, you can always add a new UI.Selector and capture source lg as well
  }

  //construct body 
  let options = {
    method: "POST",
    body: JSON.stringify(data),
    headers: {
      "Content-Type": "application/json"
    }
  }

  fetch(google_translate_fetch_translation_endpoint, options).then(function (text) {
    let res = (text.json())
    let translated_text = parse_gapi_response_json(res) //API contract for google translate
    layer.text = (translated_text)
  })
    .catch(e => console.error(e));


}