Split request into controller and repo.

Also try returning better error message on exceptions and check for
errors in payload to return well-defined errors.

api/controllers/requestController.js

@@ -0,0 +1,64 @@
+const path = require("path");
+const RequestRepository = require(path.join(
+  __dirname, "../request"
+));
+
+function addRequest(req, res) {
+  const { wine } = req.body;
+
+  return RequestRepository.addNew(wine)
+    .then(wine => res.json({
+      message: "Successfully added new request",
+      wine: wine,
+      success: true
+    }))
+    .catch(error => {
+      const { message, statusCode } = error;
+
+      return res.status(statusCode || 500).send({
+        success: false,
+        message: message || "Unable to add requested wine."
+      })
+    })
+}
+
+function getAllRequests(req, res) {
+  return RequestRepository.getAll()
+    .then(wines => res.json({
+      wines: wines,
+      success: true
+    }))
+    .catch(error => {
+      console.log("error in getAllRequests:", error);
+
+      const message = "Unable to fetch all requested wines."
+      return res.status(500).json({
+        success: false,
+        message: message
+      })
+    })
+}
+
+function deleteRequest(req, res) {
+  const { id } = req.params;
+
+  return RequestRepository.deleteById(id)
+    .then(_ => res.json({
+      message: `Slettet vin med id: ${ id }`,
+      success: true
+    }))
+    .catch(error => {
+      const { statusCode, message } = error;
+
+      return res.status(statusCode || 500).send({
+        success: false,
+        message: message || "Unable to delete requested wine."
+      });
+    })
+}
+
+module.exports = {
+  addRequest,
+  getAllRequests,
+  deleteRequest
+}

api/request.js

@@ -1,4 +1,3 @@
-const express = require("express");
 const path = require("path");
 const RequestedWine = require(path.join(
   __dirname, "/schemas/RequestedWine"
@@ -7,31 +6,15 @@ const Wine = require(path.join(
   __dirname, "/schemas/Wine"
 ));
 
-const deleteRequestedWineById = async (req, res) => {
-  const { id } = req.params;
-  if(id == null){
-    return res.json({
-      message: "Id er ikke definert",
-      success: false
-    })
+class RequestedWineNotFound extends Error {
+  constructor(message="Wine with this id was not found.") {
+    super(message);
+    this.name = "RequestedWineNotFound";
+    this.statusCode = 404;
   }
-
-  await RequestedWine.deleteOne({wineId: id})
-  return res.json({
-    message: `Slettet vin med id: ${id}`,
-    success: true
-  });
 }
 
-const getAllRequestedWines = async (req, res) => {
-  const allWines = await RequestedWine.find({}).populate("wine");
-
-  return res.json(allWines);
-}
-
-const requestNewWine = async (req, res) => {
-  const {wine} = req.body
-
+const addNew = async (wine) => {
   let thisWineIsLOKO = await Wine.findOne({id: wine.id})
 
   if(thisWineIsLOKO == undefined){
@@ -59,11 +42,31 @@ const requestNewWine = async (req, res) => {
   }
   await requestedWine.save()
 
-  return res.send(requestedWine);
+  return requestedWine;
+}
+
+const getById = (id) => {
+  return RequestedWine.findOne({ wineId: id }).populate("wine")
+    .then(wine => {
+      if (wine == null) {
+        throw new RequestedWineNotFound();
+      }
+
+      return wine;
+    })
+}
+
+const deleteById = (id) => {
+  return getById(id)
+    .then(wine => RequestedWine.deleteOne({ wineId: wine.id }))
+}
+
+const getAll = () => {
+  return RequestedWine.find({}).populate("wine");
 }
 
 module.exports = {
-  requestNewWine,
-  getAllRequestedWines,
-  deleteRequestedWineById
+  addNew,
+  getAll,
+  deleteById
 };

api/router.js

@@ -17,13 +17,15 @@ const virtualRegistrationApi = require(path.join(
 const lottery = require(path.join(__dirname, "/lottery"));
 const chatHistoryApi = require(path.join(__dirname, "/chatHistory"));
 
+const requestController = require(path.join(__dirname, "/controllers/requestController"));
+
 const router = express.Router();
 
 router.get("/wineinfo/search", wineinfo.wineSearch);
 
-router.get("/request/all", setAdminHeaderIfAuthenticated, request.getAllRequestedWines);
-router.post("/request/new-wine", request.requestNewWine);
-router.delete("/request/:id", request.deleteRequestedWineById);
+router.get("/request/all", setAdminHeaderIfAuthenticated, requestController.getAllRequests);
+router.post("/request/new-wine", requestController.addRequest);
+router.delete("/request/:id", requestController.deleteRequest);
 
 router.get("/wineinfo/schema", mustBeAuthenticated, update.schema);
 router.get("/wineinfo/:ean", wineinfo.byEAN);