Targeted Push Notifications: Parse.com Cloud Code

main.js

// Use Parse.Cloud.define to define as many cloud functions as you want.
// For example:
Parse.Cloud.define("hello", function (request, response) {
    response.success("Hello world!");
});
 
Parse.Cloud.define("userWithEmailExists", function (request, response) {
    var email = request.params.email;
    if (email != null && email !== "") {
        email = email.trim();
    } else {
        response.error("Must provide \"email\" in JSON data");
        return;
    }
    var logMessage = "Checking for email \"{0}\"".format(email);
    console.log(logMessage);
    // Find users with a given email
    var userQuery = new Parse.Query(Parse.User);
    userQuery.equalTo("email", email);
    userQuery.find({
        success: function (results) {
            if (results.length > 0) {
                response.success('true');
            } else {
                response.success('false');
            }
        }, 
        error: function (error) {
            response.error(error);
        }
    });
});
 
Parse.Cloud.define("getUserWithEmail", function (request, response) {
    var emailParam = request.params.email;
 
    // Check if email exists and return associated user
    Parse.Cloud.run("userWithEmailExists", { email: emailParam },{
       success: function (booleanObj) {
        if (JSON.parse(booleanObj)) {
                // Find users with a given email
                var userQuery = new Parse.Query(Parse.User);
                userQuery.equalTo("email", emailParam);
                userQuery.first({
                    success: function (object) {
                        response.success(object);
                    }
                }); 
        } else {
            response.error("User with email does not exist");
        }
      }, 
      error: function (error) {
            response.error(error);
        }
    });
});
 
 
Parse.Cloud.define("pushToEmail", function (request, response) {
    var emailParam = request.params.email;
    var message = request.params.message;
    if (message != null && message !== "") {
        message = message.trim();
    } else {
     response.error("Must provide \"message\" in JSON data");
     return;
    }
 
    // Can see this at https://www.parse.com/apps/{APP_NAME}/cloud_code/log
    var logMessage = "Sending \"{0}\" to {1}".format(message, emailParam);
    console.log(logMessage);
 
    // Check if email exists and send notification
    Parse.Cloud.run("userWithEmailExists", { email: emailParam },{
       success: function (booleanObj) {
        if (JSON.parse(booleanObj)) {
 
            // Find users with a given email
            var userQuery = new Parse.Query(Parse.User);
            userQuery.equalTo("email", emailParam);
             
            var pushQuery = new Parse.Query(Parse.Installation);
 
            // pushQuery.containedIn("deviceType", ["ios", "android"]); // errors if no iOS certificate
            pushQuery.exists("user"); // filter out installations without users
            pushQuery.include('user'); // expand the user pointer
            pushQuery.matchesQuery("user", userQuery);
 
            // Send push notification to query
            Parse.Push.send({
                where: pushQuery, // Set our installation query
                data: {
                    alert: message
                    }
                }, {
                success: function () {
                    // Push was successful
                    console.log("Message was sent successfully");
                    response.success('true');
                },
                error: function (error) {
                    response.error(error);
                }
            });
        } else {
            response.error("User with email does not exist");
        }
      }, 
      error: function (error) {
            response.error(error);
        }
    });
});
 
Parse.Cloud.define("pushToAll", function (request, response) {
    var message = request.params.message;
    if (message != null && message !== "") {
        message = message.trim();
    } else {
     response.error("Must provide \"message\" in JSON data");
     return;
    }
 
    // Can see this at https://www.parse.com/apps/{APP_NAME}/cloud_code/log
    var logMessage = "Sending \"{0}\" to all installations".format(message);
    console.log(logMessage);
             
    var pushQuery = new Parse.Query(Parse.Installation);
    // pushQuery.containedIn("deviceType", ["ios", "android"]); // errors if no iOS certificate
 
    // Send push notification to query
    Parse.Push.send({
        where: pushQuery, // Set our installation query
        data: {
            alert: message
            }
        }, {
        success: function () {
            // Push was successful
            console.log("Message was sent successfully");
            response.success('true');
        },
        error: function (error) {
            response.error(error);
        }
    });
});
 
 
if (!String.prototype.format) { 
  String.prototype.format = function() {
    var args = arguments;
    return this.replace(/{(\d+)}/g, function(match, number) { 
      return typeof args[number] != 'undefined'
      ? args[number]
      : match
      ;
  });
};
}

I appreciate you using my code, but if you were going to make modifications, you could have forked it...