challenges: WIP beginning challenges feature. some basic CRUD & some

basic subscribe / unsubscribe functional (but buggy)

src/controllers/challenges.js

@@ -0,0 +1,158 @@
+// @see ../routes for routing
+
+var _ = require('lodash');
+var nconf = require('nconf');
+var async = require('async');
+var algos = require('habitrpg-shared/script/algos');
+var helpers = require('habitrpg-shared/script/helpers');
+var items = require('habitrpg-shared/script/items');
+var User = require('./../models/user').model;
+var Group = require('./../models/group').model;
+var Challenge = require('./../models/challenge').model;
+var api = module.exports;
+
+/*
+  ------------------------------------------------------------------------
+  Challenges
+  ------------------------------------------------------------------------
+*/
+
+// GET
+api.get = function(req, res) {
+  // TODO only find in user's groups (+ public)
+  // TODO populate (group, leader, members)
+  Challenge.find({},function(err, challenges){
+    if(err) return res.json(500, {err:err});
+    res.json(challenges);
+  })
+}
+
+// CREATE
+api.create = function(req, res){
+  // FIXME sanitize
+  var challenge = new Challenge(req.body);
+  challenge.save(function(err, saved){
+    // Need to create challenge with refs (group, leader)? Or is this taken care of automatically?
+    // @see http://mongoosejs.com/docs/populate.html
+    if (err) return res.json(500, {err:err});
+    res.json(saved);
+  });
+}
+
+// UPDATE
+api.update = function(req, res){
+  //FIXME sanitize
+  Challenge.findByIdAndUpdate(req.params.cid, {$set:req.body}, function(err, saved){
+    if(err) res.json(500, {err:err});
+    res.json(saved);
+    // TODO update subscribed users' tasks, each user.__v++
+  })
+}
+
+// DELETE
+// 1. update challenge
+// 2. update sub'd users' tasks
+
+/**
+ * Syncs all new tasks, deleted tasks, etc to the user object
+ * @param chal
+ * @param user
+ * @return nothing, user is modified directly. REMEMBER to save the user!
+ */
+var syncChalToUser = function(chal, user) {
+  if (!chal || !user) return;
+
+  // Sync tags
+  var tags = user.tags || [];
+  var i = _.findIndex(tags, {id: chal._id})
+  if (~i) {
+    if (tags[i].name !== chal.name) {
+      // update the name - it's been changed since
+      user.tags[i].name = chal.name;
+    }
+  } else {
+    user.tags.push({
+      id: chal._id,
+      name: chal.name,
+      challenge: true
+    });
+  }
+  tags = {};
+  tags[chal._id] = true;
+  _.each(['habits','dailys','todos','rewards'], function(type){
+    _.each(chal[type], function(task){
+      _.defaults(task, {
+        tags: tags,
+        challenge: chal._id,
+        group: chal.group
+      });
+
+      if (~(i = _.findIndex(user[type], {id:task.id}))) {
+        _.defaults(user[type][i], task);
+      } else {
+        user[type].push(task);
+      }
+    })
+  })
+  //FIXME account for deleted tasks (each users.tasks.broken = true)
+};
+
+api.join = function(req, res){
+  var user = res.locals.user;
+  var cid = req.params.cid;
+
+  async.waterfall([
+    function(cb){
+      Challenge.findByIdAndUpdate(cid, {$addToSet:{members:user._id}}, cb);
+    },
+    function(challenge, cb){
+      if (!~user.challenges.indexOf(cid))
+        user.challenges.unshift(cid);
+      // Add all challenge's tasks to user's tasks
+      syncChalToUser(challenge, user);
+      user.save(function(err){
+        if (err) return cb(err);
+        cb(null, challenge); // we want the saved challenge in the return results, due to ng-resource
+      });
+    }
+  ], function(err, result){
+    if(err) return res.json(500,{err:err});
+    res.json(result);
+  });
+}
+
+api.leave = function(req, res, next){
+  var user = res.locals.user;
+  var cid = req.params.cid;
+  // whether or not to keep challenge's tasks. strictly default to true if "false" isn't provided
+  var keep = !(/^false$/i).test(req.query.keep);
+
+  async.waterfall([
+    function(cb){
+      Challenge.findByIdAndUpdate(cid, {$pull:{members:user._id}}, cb);
+    },
+    function(chal, cb){
+      // Remove challenge from user
+      //User.findByIdAndUpdate(user._id, {$pull:{challenges:cid}}, cb);
+      var i = user.challenges.indexOf(cid)
+      if (~i) user.challenges.splice(i,1);
+
+      // Remove tasks from user
+      _.each(chal.tasks, function(task) {
+        if (keep) {
+          delete user[task.type+'s'].id(task.id).challenge;
+          delete user[task.type+'s'].id(task.id).group;
+        } else {
+          user[task.type+'s'].id(task.id).remove();
+        }
+      });
+      user.save(function(err){
+        if (err) return cb(err);
+        cb(null, chal);
+      })
+    }
+  ], function(err, result){
+    if(err) return res.json(500,{err:err});
+    res.json(result);
+  });
+}