const qs = require('qs')
const axios = require('axios')

class Translator {
  constructor() {
    this.deeplApi = process.env.DEEPL_URL || 'api-free.deepl.com'
    this.deeplKey = process.env.DEEPL_KEY
    this.urlRequest = `https://${this.deeplApi}/v2/translate`
  }

  async get(origin, target, text) {
    try {
      const data = {
        auth_key: this.deeplKey,
        source_lang: origin,
        target_lang: target,
        text
      }
      const result = await axios.post(this.urlRequest, qs.stringify(data), {
        headers: {
          'content-type': 'application/x-www-form-urlencoded'
        }
      })

      return result.data
    } catch (error) {
      console.log('error', error)
    }
  }
}

const translator = new Translator()

async function translate(origin, target, text) {
  const data = await translator.get(origin, target, text)
  return data.translations[0].text
}

module.exports = {translate}