firebase-tools/lib/checkValidTargetFilters.js

'use strict';

var _ = require('lodash');
var RSVP = require('rsvp');
var FirebaseError = require('./error');

module.exports = function(options) {
  function numFilters(targetTypes) {
    return _.filter(options.only, function(opt) {
      var optChunks = opt.split(':');
      return _.includes(targetTypes, optChunks[0]) && optChunks.length > 1;
    }).length;
  }
  function targetContainsFilter(targetTypes) {
    return numFilters(targetTypes) > 1;
  }
  function targetDoesNotContainFilter(targetTypes) {
    return numFilters(targetTypes) === 0;
  }

  return new RSVP.Promise(function(resolve, reject) {
    if (!options.only) {
      return resolve();
    }
    if (options.except) {
      return reject(new FirebaseError('Cannot specify both --only and --except', {exit: 1}));
    }
    if (targetContainsFilter(['database', 'storage', 'hosting'])) {
      return reject(new FirebaseError('Filters specified with colons (e.g. --only functions:func1,functions:func2) are only supported for functions', {exit: 1}));
    }
    if (targetContainsFilter(['functions']) && targetDoesNotContainFilter(['functions'])) {
      return reject(new FirebaseError('Cannot specify "--only functions" and "--only functions:<filter>" at the same time', {exit: 1}));
    }
    return resolve();
  });
};