refactor code to allow admin domain to be set

src/routes/cloudron.js

@@ -12,6 +12,7 @@ exports = module.exports = {
     getLogs: getLogs,
     getLogStream: getLogStream,
     getStatus: getStatus,
+    setAdmin: setAdmin
 };
 
 var appstore = require('../appstore.js'),
@@ -173,6 +174,17 @@ function getLogStream(req, res, next) {
     });
 }
 
+function setAdmin(req, res, next) {
+    if (!req.body.domain || typeof req.body.domain !== 'string') return next(new HttpError(400, 'domain must be a string'));
+
+    cloudron.setAdmin(req.body.domain, function (error) {
+        if (error && error.reason === CloudronError.BAD_FIELD) return next(new HttpError(404, error.message));
+        if (error) return next(new HttpError(500, error));
+
+        next(new HttpSuccess(200, status));
+    });
+}
+
 function getStatus(req, res, next) {
     cloudron.getStatus(function (error, status) {
         if (error) return next(new HttpError(500, error));