'use strict'

const cli = require('heroku-cli-util')

module.exports = {
  topic: 'redis',
  command: 'promote',
  needsApp: true,
  needsAuth: true,
  args: [{ name: 'database', optional: false }],
  description: 'sets DATABASE as your REDIS_URL',
  run: cli.command(async (context, heroku) => {
    const api = require('../lib/shared')(context, heroku)
    let addonsList = heroku.get(`/apps/${context.app}/addons`)

    let addon = await api.getRedisAddon(addonsList)

    let redisFilter = api.makeAddonsFilter('REDIS_URL')
    let redis = redisFilter(await addonsList)

    // Check if REDIS_URL is singlehandly assigned
    if (redis.length === 1 && redis[0].config_vars.length === 1) {
      let attachment = redis[0]
      await heroku.post('/addon-attachments', { body: {
        app: { name: context.app },
        addon: { name: attachment.name },
        confirm: context.app
      } })
    }

    cli.log(`Promoting ${addon.name} to REDIS_URL on ${context.app}`)
    await heroku.post('/addon-attachments', { body: {
      app: { name: context.app },
      addon: { name: addon.name },
      confirm: context.app,
      name: 'REDIS'
    } })
  })
}