clown/lib/command.js

clown computing with pkgcloud

var _ = require('lodash');

var log = require('./log'),
    params = require('./params');

var command = module.exports = function(method, signature) {
  var clientKeys = '_events,newListener,_conf,delimiter,wildcard,listenerTree,config,protocol,before,event,client'.split(',');

  return function(argv, client, cb) {
    params({ method: method, signature: signature }, argv, function(err, args) {
      if (err) return cb(err);

      log.verbose.call(log,
        'command',
        'client.%s(' + args.map(function(a) {
           return JSON.stringify(a);
         }).concat('[callback]') + ');',
         method
      );

      args.push(function(err, res) {
        if (err) return cb(err);

        cb(null, res.map ? res.map(scrub) : scrub(res));
      });
      client[method].apply(client, args);
    });
  };

  function scrub(obj) {
    var clean = _.transform(obj, function(acc, v, k) {
      if (clientKeys.indexOf(k) === -1) {
        acc[k] = v;
      }
    });

    return clean;
  };
};

command.help = function() {
  var argv = [].slice.call(arguments);
  return function(_, _, cb) {
    argv.forEach(function(ls) {
      ls.split('\n').forEach(function(l) {
        log.help('😄 ', l);
      });
    });
    cb();
  };
};