'use strict'

const debug = require('./lib/debug')
const fetch = require('./lib/fetch')
const parser = require('./lib/parser')
const assign = require('lodash.assign')
const defaultConfigs = require('./defaultConfig')
const pkg = require('./package.json')
const { EDOutput, CODES } = require('eazydict-standard-output')

// 入口
function main (words, userConfigs) {
  debug('run with arguments %O', {
    words,
    userConfigs
  })

  let configs = assign({}, defaultConfigs, userConfigs)

  debug('use configs %O', configs)

  if (!words) {
    return Promise.reject(new Error('请输入要查询的文字'))
  }

  // 编码
  let keywords = encodeURIComponent(words)

  const url = `http://www.youdao.com/w/eng/${keywords}`
  debug(`fetch url ${url}`)

  return fetch(url, configs)
    .then(body => parser(body))
    .catch(error => {
      if (error.name === 'FetchError') {
        return new EDOutput(CODES.NETWORK_ERROR)
      }

      return new EDOutput(CODES.OTHER)
    })
    .then(output => {
      // 添加插件信息
      output.pluginName = 'Youdao'
      output.packageName = pkg.name
      output.words = words
      output.url = url

      debug('output: %O', output)

      return output
    })
}

if (require.main === module) {
  // istanbul ignore next
  let word = process.argv.slice(2).join(' ')

  main(word).then(result => {
    console.log(result) // eslint-disable-line no-console
  })
} else {
  module.exports = main
}