fix(medusa-plugin-addon): Fixes admin endpoints, Adds flag to avoid merging add-on line-items

packages/medusa/src/models/schemas/line-item.js

@@ -8,6 +8,7 @@ export default new mongoose.Schema({
   description: { type: String },
   thumbnail: { type: String },
   is_giftcard: { type: Boolean, default: false },
+  should_merge: { type: Boolean, default: true },
   has_shipping: { type: Boolean, default: false },
 
   // mongoose doesn't allow multi-type validation but this field allows both

packages/medusa/src/services/cart.js

@@ -375,7 +375,7 @@ class CartService extends BaseService {
 
     // If content matches one of the line items currently in the cart we can
     // simply update the quantity of the existing line item
-    if (currentItem) {
+    if (currentItem && validatedLineItem.should_merge) {
       const newQuantity = currentItem.quantity + validatedLineItem.quantity
 
       // Confirm inventory

packages/medusa/src/services/line-item.js

@@ -38,6 +38,7 @@ class LineItemService extends BaseService {
     const lineItemSchema = Validator.object({
       title: Validator.string().required(),
       is_giftcard: Validator.bool().optional(),
+      should_merge: Validator.bool().optional(),
       description: Validator.string()
         .allow("")
         .optional(),
@@ -110,6 +111,7 @@ class LineItemService extends BaseService {
       title: product.title,
       description: variant.title,
       quantity,
+      should_merge: true,
       thumbnail: product.thumbnail,
       content: {
         unit_price,
@@ -117,6 +119,7 @@ class LineItemService extends BaseService {
         product,
         quantity: 1,
       },
+      metadata,
     }
 
     if (product.is_giftcard) {