const { defineConfig } = require('@vue/cli-service')

// 不能用localhost，https://forum.dfinity.org/t/development-workflow-quickly-test-code-modifications/1793/21
const API_BASE_URL = 'http://127.0.0.1:12450'

function toBool(val) {
  if (typeof val === 'string') {
    return ['false', 'no', 'off', '0', ''].indexOf(val.toLowerCase()) === -1
  }
  return Boolean(val)
}

module.exports = defineConfig({
  devServer: {
    proxy: {
      '/api': {
        target: API_BASE_URL,
        ws: true
      },
      '/emoticons': {
        target: API_BASE_URL
      },
      '/custom_public': {
        target: API_BASE_URL
      },
    }
  },
  productionSourceMap: toBool(process.env.PROD_SOURCE_MAP),
  chainWebpack: config => {
    const APP_VERSION = `v${process.env.npm_package_version}`
    const LIB_USE_CDN = toBool(process.env.LIB_USE_CDN)

    const ENV = {
      APP_VERSION,
      LIB_USE_CDN,
    }
    config.plugin('define')
      .tap(args => {
        let defineMap = args[0]
        let env = defineMap['process.env']
        for (let [name, value] of Object.entries(ENV)) {
          env[name] = JSON.stringify(value)
        }
        return args
      })

    if (LIB_USE_CDN) {
      config.externals({
        'element-ui': 'ELEMENT',
        lodash: '_',
        pako: 'pako',
        vue: 'Vue',
        'vue-router': 'VueRouter',
        'vue-i18n': 'VueI18n',
      })
    }
  }
})