Request wine front & backend talk nicer togheter.

- requestWineController validates wine object and returns helpfull
 error repsonse if anything is missing.
 - requestWine uses new endpoint and calls api from within itself.
 - Linting.

api/controllers/requestController.js

@@ -1,10 +1,11 @@
 const path = require("path");
-const RequestRepository = require(path.join(__dirname, "../request"));
+const requestRepository = require(path.join(__dirname, "../request"));
 
 function addRequest(req, res) {
   const { wine } = req.body;
 
-  return RequestRepository.addNew(wine)
+  return verifyWineValues(wine)
+    .then(_ => requestRepository.addNew(wine))
     .then(wine =>
       res.json({
         message: "Successfully added new request",
@@ -23,7 +24,8 @@ function addRequest(req, res) {
 }
 
 function allRequests(req, res) {
-  return RequestRepository.getAll()
+  return requestRepository
+    .getAll()
     .then(wines =>
       res.json({
         wines: wines,
@@ -31,12 +33,10 @@ function allRequests(req, res) {
       })
     )
     .catch(error => {
-      console.log("error in getAllRequests:", error);
-
-      const message = "Unable to fetch all requested wines.";
-      return res.status(500).json({
+      const { message, statusCode } = error;
+      return res.status(statusCode || 500).json({
         success: false,
-        message: message
+        message: message || "Unable to fetch all requested wines."
       });
     });
 }
@@ -44,7 +44,8 @@ function allRequests(req, res) {
 function deleteRequest(req, res) {
   const { id } = req.params;
 
-  return RequestRepository.deleteById(id)
+  return requestRepository
+    .deleteById(id)
     .then(_ =>
       res.json({
         message: `Slettet vin med id: ${id}`,
@@ -61,6 +62,41 @@ function deleteRequest(req, res) {
     });
 }
 
+function verifyWineValues(wine) {
+  return new Promise((resolve, reject) => {
+    if (wine == undefined) {
+      reject({
+        message: "No wine object found in request body.",
+        status: 400
+      });
+    }
+
+    if (wine.id == null) {
+      reject({
+        message: "Wine object missing value id.",
+        status: 400
+      });
+    } else if (wine.name == null) {
+      reject({
+        message: "Wine object missing value name.",
+        status: 400
+      });
+    } else if (wine.vivinoLink == null) {
+      reject({
+        message: "Wine object missing value vivinoLink.",
+        status: 400
+      });
+    } else if (wine.image == null) {
+      reject({
+        message: "Wine object missing value image.",
+        status: 400
+      });
+    }
+
+    resolve();
+  });
+}
+
 module.exports = {
   addRequest,
   allRequests,