Add promotion route

README.md

         * [/society/view/:society\_name/events](#societyviewsociety_nameevents)
         * [/society/join/](#societyjoin)
         * [/society/leave/](#societyleave)
+        * [/society/promote/](#societypromote)
     * __Events__
         * [/events/create/](#eventscreate)
         * [/events/view/:eventid](#eventsvieweventid)
 The error codes are as follows, `1` indicates that the user isn't a member
 of that society and `2` indicates a malformed request.
 
+### /society/promote/
+To promote a user within a society, a `POST` request should be sent with the
+following data:
+```javascript
+{
+    "user": "Test1",
+    "society": "TestSociety",
+    "auth": "$2a$10$qjkvbcPZ4YC7/a/I0ZpTaeJp6auXjGrG9pgAdI3PP61u4CftQPSL2"
+}
+```
+The response will then be formed as follows:
+```javascript
+{
+    "success": 1,
+    "error": 0
+}
+```
+The error codes are as follows, `1` indicates that the auth key is invalid, `2`
+indicates that the user does not belong to the society, `3` indicates that the
+user is already an admin and `4` indicates a malformed request.
+
 ### /events/create/
 To create a new event, a `POST` request should be sent with the following data:
 ```javascript

presenters/society-controller.js

         });
       }
     });
+  },
+
+  promote_user: function (promotee, soc_name, auth, complete) {
+    var self = this;
+    permissions_controller.user_can_manage_society(auth, soc_name, function (isadmin) {
+      if (isadmin) {
+        self.get_user_list(soc_name, function (userlist) {
+          if (userlist.indexOf(promotee) !== -1) {
+            redis.hget("society:" + soc_name.toLowerCase(), "admins", function (err, result) {
+              if (result) {
+                result = JSON.parse(result);
+                if (result.indexOf(promotee) > -1) {
+                  complete({
+                    "success": 0,
+                    "error": 3
+                  });
+                } else {
+                redis.hset("society:" + soc_name.toLowerCase(), "admins", JSON.stringify(result.concat(promotee)));
+                complete({
+                  "success": 1,
+                  "error": 0
+                });
+              }
+              }else {
+                console.error("Error could not find admin list in society.");
+              }
+            });
+          } else {
+            complete({
+              "success": 0,
+              "error": 2
+            })
+          }
+        });
+      } else {
+        complete({
+          "success": 0,
+          "error": 1
+        })
+      }
+    });
   }
 }

routes/society/promote-user.js

+var society_controller = require("./../../presenters/society-controller.js");
+
+module.exports = {
+  perform: function (a,b) {
+    perform(a,b);
+  }
+}
+
+var perform = function (req, res) {
+  var promotee = req.body.user || req.query.user;
+  var soc_name = req.body.society || req.query.society;
+  var auth = req.body.auth || req.query.auth;
+
+  if (promotee && soc_name && auth) {
+    society_controller.promote_user(promotee, soc_name, auth, function (response) {
+      res.send(response);
+    });
+  } else {
+    res.send({
+      "success": 0,
+      "error": 4
+    })
+  }
+};

utils/route-manager.js

 var soc_view = require("../routes/society/view-society.js");
 var soc_join = require("../routes/society/join-society.js");
 var soc_leave = require("../routes/society/leave-society.js");
+var soc_promote = require("../routes/society/promote-user.js");
 var soc_events = require("../routes/events/view-all-society-events.js");
 var event_create = require("../routes/events/create-society-event.js");
 var event_view = require("../routes/events/view-society-events.js");
 router.all('/society/view/:societyid/events/', soc_events.perform);
 router.all('/society/join/', soc_join.perform);
 router.all('/society/leave/', soc_leave.perform);
+router.all('/society/promote/', soc_promote.perform);
 
 router.all('/events/create/', event_create.perform);
 router.all('/events/view/:eventid', event_view.perform);