feat(webhooks): add webhooks to user.preferences (API settings) so we can post to external services (eg, Beeminder)

src/controllers/user.js

@@ -14,6 +14,7 @@ var moment = require('moment');
 var logging = require('./../logging');
 var acceptablePUTPaths;
 var api = module.exports;
+var request = require('request');
 
 // api.purchase // Shared.ops
 
@@ -106,6 +107,15 @@ api.score = function(req, res, next) {
       _tmp: user._tmp
     }, saved.toJSON().stats));
 
+    // Webhooks
+    _.each(user.preferences.webhooks, function(h){
+      request.post({
+        url: h.url,
+        //form: {task: task, delta: delta, user: _.pick(user, ['stats', '_tmp'])} // this is causing "Maximum Call Stack Exceeded"
+        body: {direction:direction, task: task, delta: delta, user: _.pick(user, ['_id', 'stats', '_tmp'])}, json:true
+      });
+    });
+
     if (
       (!task.challenge || !task.challenge.id || task.challenge.broken) // If it's a challenge task, sync the score. Do it in the background, we've already sent down a response and the user doesn't care what happens back there
       || (task.type == 'reward') // we don't want to update the reward GP cost

src/models/user.js

@@ -274,7 +274,8 @@ var UserSchema = new Schema({
     tagsCollapsed: {type: Boolean, 'default': false},
     advancedCollapsed: {type: Boolean, 'default': false},
     toolbarCollapsed: {type:Boolean, 'default':false},
-    background: String
+    background: String,
+    webhooks: {type:Array, 'default': []}
   },
   profile: {
     blurb: String,