fh-fhc/lib/cmd/internal/messaging.js

A Command Line Interface for FeedHenry

/* globals i18n */
module.exports = messaging;
messaging.pingVersion = pingVersion;
messaging.topics = topics;
messaging.topic = topic;
messaging.query_topic = query_topic;
messaging.message = message;

messaging.desc = i18n._("FeedHenry messaging client");
messaging.usage = "\nfhc messaging ping"
  + "\nfhc messaging version"
  + "\nfhc messaging stats"
  + "\nfhc messaging topics"
  + "\nfhc messaging topic <topic> <query>"
  + "\nfhc messaging message <topic> <id>";

var fhreq = require("../../utils/request");

// main messaging entry point
function messaging(argv, cb) {
  var args = argv._;
  var action = args.shift();
  switch (action) {
  case "ping":
    return pingVersion("ping", cb);
  case "version":
    return pingVersion("version", cb);
  case "stats":
    return pingVersion("stats", cb);
  case "topics":
  case "ls":
    return topics(cb);
  case "topic":
    if (args.length !== 1 && args.length !== 2) {
      return unknown("topic", cb);
    }
    if (args.length === 1) {
      return topic(args[0], cb);
    }
    return query_topic(args[0], args[1], cb);
  case "message":
    if (args.length !== 2) {
      return unknown("message", cb);
    }
    return message(args[0], args[1], cb);
  default:
    return unknown(action, cb);
  }
}

function pingVersion(pingOrVersion, cb) {
  fhreq.GET(fhreq.getMessagingUrl(), "sys/info/" + pingOrVersion, function(err, remoteData) {
    return cb(err, remoteData);
  });
}

function topics(cb) {
  fhreq.GET(fhreq.getMessagingUrl(), "msg", function(err, remoteData) {
    return cb(err, remoteData);
  });
}

function topic(_topic, cb) {
  fhreq.GET(fhreq.getMessagingUrl(), "msg/" + _topic, function(err, remoteData) {
    return cb(err, remoteData);
  });
}

function query_topic(topic, query, cb) {
  fhreq.GET(fhreq.getMessagingUrl(), "msg/" + topic + "?" + query, function(err, remoteData) {
    return cb(err, remoteData);
  });
}

function message(topic, id, cb) {
  fhreq.GET(fhreq.getMessagingUrl(), "msg/" + topic + "/" + id, function(err, remoteData) {
    return cb(err, remoteData);
  });
}

function unknown(action, cb) {
  cb(i18n._("Wrong arguments for or unknown action: ") + action + i18n._("\nUsage:\n") + messaging.usage);
}