'use strict'

const npm = require('./npm.js')
const fetch = require('npm-registry-fetch')
const log = require('npmlog')
const output = require('./utils/output.js')
const getItentity = require('./utils/get-identity')

stars.usage = 'npm stars [<user>]'

const getUser = (opts, user) => user
  ? Promise.resolve(user)
  : getItentity(opts)

module.exports = stars
function stars ([user], cb) {
  const opts = npm.flatOptions
  return getUser(opts, user).then(usr => {
    return fetch.json('/-/_view/starredByUser', {
      ...opts,
      // Note: key has to be JSON, for CouchDB legacy reasons, hence quoted
      query: {key: `"${usr}"`}
    })
  }).then(data => data.rows).then(stars => {
    if (stars.length === 0) {
      log.warn('stars', 'user has not starred any packages.')
    } else {
      stars.forEach(s => output(s.value))
    }
  }).catch(err => {
    if (err.code === 'ENEEDAUTH') {
      throw Object.assign(new Error("'npm stars' on your own user account requires auth"), {
        code: 'ENEEDAUTH'
      })
    } else {
      throw err
    }
  }).then(() => cb(), cb)
}