Add getSnapshot API to surveillance station

lib/surveillance-station.js

@@ -1,4 +1,44 @@
+'use strict';
+
+var util = require('util');
+
+
+function Camera(syno) {
+  this.syno = syno;
+  return this;
+}
+
+Camera.prototype.getSnapshot = function() {
+  /*jshint validthis:true */
+  var
+    userParams =
+      typeof arguments[0] === 'object' ? arguments[0] :
+      {},
+    callback =
+      typeof arguments[1] === 'function' ? arguments[1] :
+      typeof arguments[0] === 'function' ? arguments[0] :
+      null
+  ;
+  var params = {
+    api    : 'SYNO.SurveillanceStation.Camera',
+    version: 9,
+    method : 'GetSnapshot'
+  };
+  util._extend(params, userParams);
+
+  var query = this.syno.query({
+    path: '/webapi/entry.cgi',
+    params: params,
+    headers: {
+      'Accept': 'image/jpeg',
+    }
+  }, callback || null);
+
+  return query;
+}
+
 module.exports = function(syno) {
   return {
+    camera: new Camera(syno),
   };
 };

lib/synology.js

@@ -86,7 +86,8 @@ var Synology = function(options) {
           body   : options.body,
           method : options.method,
           headers: options.headers,
-          timeout: 30 * 1e3
+          timeout: 30 * 1e3,
+          encoding: null,
         }, callback ? _apiCallback : null);
       },
 
@@ -95,13 +96,11 @@ var Synology = function(options) {
           syno.emit('error', err);
           return callback && callback(err, data);
         }
-
-        // Parse the JSON response
+        
+        // Try to parse the JSON response
         try {
           data = JSON.parse(data);
         } catch(e) {
-          syno.emit('error', err);
-          return callback && callback(err, data);
         }
 
         if (!data.success && data.error) {