Starting stock management

config/baseSchema.json

@@ -97,6 +97,10 @@
         },
         "env": {
             "type": "string"
+        },
+        "trackStock": {
+            "type": "boolean",
+            "default": false
         }
     },
     "required": [

config/settings.json

@@ -22,5 +22,6 @@
     "currencySymbol": "£",
     "paymentGateway": "stripe",
     "databaseConnectionString": "mongodb://127.0.0.1:27017/expresscart",
-    "theme": "Cloth"
+    "theme": "Cloth",
+    "trackStock": true
 }

routes/index.js

@@ -11,16 +11,37 @@ router.get('/payment/:orderId', async (req, res, next) => {
     let config = req.app.config;
 
     // render the payment complete message
-    db.orders.findOne({_id: common.getId(req.params.orderId)}, async (err, result) => {
+    db.orders.findOne({_id: common.getId(req.params.orderId)}, async (err, order) => {
         if(err){
             console.info(err.stack);
         }
+
+        // If stock management is turned on payment approved update stock level
+        if(config.trackStock && req.session.paymentApproved){
+            order.orderProducts.forEach(async (product) => {
+                const dbProduct = await db.products.findOne({_id: common.getId(product.productId)});
+                let newStockLevel = dbProduct.productStock - product.quantity;
+                if(newStockLevel < 1){
+                    newStockLevel = 0;
+                }
+
+                // Update product stock
+                await db.products.update({
+                    _id: common.getId(product.productId)
+                }, {
+                    $set: {
+                        productStock: newStockLevel
+                    }
+                }, {multi: false});
+            });
+        }
+
         res.render(`${config.themeViews}payment_complete`, {
             title: 'Payment complete',
             config: req.app.config,
             session: req.session,
             pageCloseBtn: common.showCartCloseBtn('payment'),
-            result: result,
+            result: order,
             message: common.clearSessionValue(req.session, 'message'),
             messageType: common.clearSessionValue(req.session, 'messageType'),
             helpers: req.handlebars.helpers,
@@ -217,6 +238,7 @@ router.post('/product/emptycart', (req, res, next) => {
 // Add item to cart
 router.post('/product/addtocart', (req, res, next) => {
     const db = req.app.db;
+    const config = req.app.config;
     let productQuantity = req.body.productQuantity ? parseInt(req.body.productQuantity) : 1;
     const productComment = req.body.productComment ? req.body.productComment : null;
 
@@ -242,6 +264,13 @@ router.post('/product/addtocart', (req, res, next) => {
             return res.status(400).json({message: 'Error updating cart. Please try again.'});
         }
 
+        // If stock management on check there is sufficient stock for this product
+        if(config.trackStock){
+            if(productQuantity > product.productStock){
+                return res.status(400).json({message: 'There is insufficient stock of this product.'});
+            }
+        }
+
         let productPrice = parseFloat(product.productPrice).toFixed(2);
 
         // Doc used to test if existing in the cart with the options. If not found, we add new.

routes/order.js

@@ -61,7 +61,6 @@ router.get('/admin/order/view/:id', common.restrict, (req, res) => {
         if(err){
             console.info(err.stack);
         }
-        
         res.render('order', {
             title: 'View order',
             result: result,

routes/product.js

@@ -212,6 +212,7 @@ router.post('/admin/product/update', common.restrict, common.checkAccess, (req,
                 req.session.productTags = req.body.frmProductTags;
                 req.session.productOptions = req.body.productOptJson;
                 req.session.productComment = common.checkboxBool(req.body.frmProductComment);
+                req.session.productStock = req.body.frmProductStock ? req.body.frmProductStock : null;
 
                 // redirect to insert
                 res.redirect('/admin/product/edit/' + req.body.frmProductId);
@@ -225,11 +226,10 @@ router.post('/admin/product/update', common.restrict, common.checkAccess, (req,
                         productPermalink: req.body.frmProductPermalink,
                         productTags: common.cleanHtml(req.body.frmProductTags),
                         productOptions: common.cleanHtml(req.body.productOptJson),
-                        productComment: common.checkboxBool(req.body.frmProductComment)
+                        productComment: common.checkboxBool(req.body.frmProductComment),
+                        productStock: req.body.frmProductStock ? parseInt(req.body.frmProductStock) : null
                     };
 
-                    console.log('test', productDoc);
-
                     // if no featured image
                     if(!product.productImage){
                         if(images.length > 0){

views/product_edit.hbs

@@ -33,6 +33,12 @@
                     </select>
                 </div>
             </div>
+            <div class="form-group">
+                <label for="frmProductStock" class="col-sm-2 control-label">Stock level</label>
+                <div class="col-sm-6">
+                    <input type="number" name="frmProductStock" class="form-control" value="{{result.productStock}}" step="any" />
+                </div>
+            </div>
             <div class="form-group">
                 <label for="editor" class="col-sm-2 control-label">Product description *</label>
                 <div class="col-sm-10">