Ctl.Commands.push({
  name: "help",
  func: function (argv) {
    if (!argv._.length || argv.help)
      Ctl.usage();
    var cmd = argv._.splice(0,1)[0];
    argv.help = true;

    Ctl.findCommand(cmd).func(argv);
  }
});

var mergeObjects = function (obj1, obj2) {
  var result = _.clone(obj1);
  _.each(obj2, function (v, k) {
    // If both objects have an object at this key, then merge those objects.
    // Otherwise, choose obj2's value.
    if ((v instanceof Object) && (obj1[k] instanceof Object))
      result[k] = mergeObjects(v, obj1[k]);
    else
      result[k] = v;
  });
  return result;
};


Ctl.Commands.push({
  name: "start",
  help: "Start this app",
  func: function (argv) {
    if (argv.help || argv._.length !== 0) {
      process.stderr.write(
"Usage: ctl start\n" +
 "\n" +
"Starts the app. For now, this just means that it runs the 'server'\n" +
"program.\n"
);
      process.exit(1);
    }

    var numServers = Ctl.getJobsByApp(
      Ctl.myAppName(), {program: 'server', done: false}).count();
    if (numServers === 0) {
      var appConfig = Ctl.prettyCall(
        Ctl.findGalaxy(), 'getAppConfiguration', [Ctl.myAppName()]);

      var proxyConfig;
      var bindPathPrefix = "";
      if (appConfig.admin) {
        bindPathPrefix = "/" + Ctl.myAppName();
      }


      // XXX args? env?
      Ctl.prettyCall(Ctl.findGalaxy(), 'run', [Ctl.myAppName(), 'server', {
        exitPolicy: 'restart',
        env: {
          ROOT_URL: "https://" + appConfig.sitename + bindPathPrefix,
          METEOR_SETTINGS: appConfig.METEOR_SETTINGS,
          ADMIN_APP: appConfig.admin //TODO: When apps have admin & non-admin sides, set this based on that.
        },
        ports: {
          "main": {
            bindEnv: "PORT",
            routeEnv: "ROUTE"//,
            //bindIpEnv: "BIND_IP" // Later, we can teach Satellite to do
            //something like recommend the process bind to a particular IP here.
            //For now, we don't have a way of setting this, so Satellite binds
            //to 0.0.0.0
          }
        },
        tags: ["runner"]
      }]);
      console.log("Started a server.");
    } else {
      console.log("Server already running.");
    }
  }
});

Ctl.Commands.push({
  name: "stop",
  help: "Stop this app",
  func: function (argv) {
    if (argv.help || argv._.length !== 0) {
      process.stderr.write(
"Usage: ctl stop\n" +
 "\n" +
"Stops the app. For now, this just means that it kills all jobs\n" +
"other than itself.\n"
);
      process.exit(1);
    }

    // Get all jobs (other than this job: don't commit suicide!) that are not
    // already killed.
    var jobs = Ctl.getJobsByApp(
      Ctl.myAppName(), {_id: {$ne: Ctl.myJobId()}, done: false});
    jobs.forEach(function (job) {
      // Don't commit suicide.
      if (job._id === Ctl.myJobId())
        return;
      // It's dead, Jim.
      if (job.done)
        return;
      Ctl.kill(job.program, job._id);
    });
    console.log("Server stopped.");
  }
});


Ctl.Commands.push({
  name: "scale",
  help: "Scale jobs",
  func: function (argv) {
    if (argv.help || argv._.length === 0 || _.contains(argv._, 'ctl')) {
      process.stderr.write(
"Usage: ctl scale program1=n [...] \n" +
 "\n" +
"Scales some programs. Runs or kills jobs until there are n non-done jobs\n" +
"in that state.\n"
);
      process.exit(1);
    }

    var scales = _.map(argv._, function (arg) {
      var m = arg.match(/^(.+)=(\d+)$/);
      if (!m) {
        console.log("Bad scaling argument; should be program=number.");
        process.exit(1);
      }
      return {program: m[1], scale: parseInt(m[2])};
    });

    _.each(scales, function (s) {
      var jobs = Ctl.getJobsByApp(
        Ctl.myAppName(), {program: s.program, done: false});
      jobs.forEach(function (job) {
        --s.scale;
        // Is this an extraneous job, more than the number that we need? Kill
        // it!
        if (s.scale < 0) {
          Ctl.kill(s.program, job._id);
        }
      });
      // Now start any jobs that are necessary.
      if (s.scale <= 0)
        return;
      console.log("Starting %d jobs for %s", s.scale, s.program);
      _.times(s.scale, function () {
        // XXX args? env?
        Ctl.prettyCall(Ctl.findGalaxy(), 'run', [Ctl.myAppName(), s.program, {
          exitPolicy: 'restart'
        }]);
      });
    });
  }
});

main = function (argv) {
  return Ctl.main(argv);
};