feat(order, types): Add Credit Line to order module (#10636)

* feat(order, types): Add Credit Line to order module

* chore: add action to inject credit lines

packages/modules/order/src/utils/actions/credit-line-add.ts

@@ -0,0 +1,32 @@
+import { ChangeActionType, MedusaError } from "@medusajs/framework/utils"
+import { OrderChangeProcessing } from "../calculate-order-change"
+import { setActionReference } from "../set-action-reference"
+
+OrderChangeProcessing.registerActionType(ChangeActionType.CREDIT_LINE_ADD, {
+  operation({ action, currentOrder, options }) {
+    const creditLines = currentOrder.credit_lines ?? []
+    let existing = creditLines.find((cl) => cl.id === action.reference_id)
+
+    if (!existing) {
+      existing = {
+        id: action.reference_id!,
+        order_id: currentOrder.id,
+        amount: action.amount as number,
+      }
+
+      creditLines.push(existing)
+    }
+
+    setActionReference(existing, action, options)
+
+    currentOrder.credit_lines = creditLines
+  },
+  validate({ action }) {
+    if (action.amount == null) {
+      throw new MedusaError(
+        MedusaError.Types.INVALID_DATA,
+        "Amount is required."
+      )
+    }
+  },
+})

packages/modules/order/src/utils/actions/index.ts

@@ -1,5 +1,7 @@
 export * from "./cancel-item-fulfillment"
 export * from "./cancel-return"
+export * from "./change-shipping-address"
+export * from "./credit-line-add"
 export * from "./deliver-item"
 export * from "./fulfill-item"
 export * from "./item-add"
@@ -12,6 +14,5 @@ export * from "./return-item"
 export * from "./ship-item"
 export * from "./shipping-add"
 export * from "./shipping-remove"
-export * from "./write-off-item"
 export * from "./transfer-customer"
-export * from "./change-shipping-address"
+export * from "./write-off-item"

packages/modules/order/src/utils/calculate-order-change.ts

@@ -58,6 +58,12 @@ export class OrderChangeProcessing {
     let paid = MathBN.convert(0)
     let refunded = MathBN.convert(0)
     let transactionTotal = MathBN.convert(0)
+    let creditLineTotal = (this.order.credit_lines || []).reduce(
+      (acc, creditLine) => MathBN.add(acc, creditLine.amount),
+      MathBN.convert(0)
+    )
+
+    const currentOrderTotal = MathBN.add(this.order.total ?? 0, creditLineTotal)
 
     for (const tr of transactions) {
       if (MathBN.lt(tr.amount, 0)) {
@@ -73,11 +79,12 @@ export class OrderChangeProcessing {
     this.summary = {
       pending_difference: 0,
       difference_sum: 0,
-      current_order_total: this.order.total ?? 0,
+      current_order_total: currentOrderTotal,
       original_order_total: this.order.total ?? 0,
       transaction_total: transactionTotal,
       paid_total: paid,
       refunded_total: refunded,
+      credit_line_total: creditLineTotal,
     }
   }
 
@@ -100,6 +107,7 @@ export class OrderChangeProcessing {
     }
 
     const summary = this.summary
+
     for (const action of this.actions) {
       if (!this.isEventActive(action)) {
         continue
@@ -123,6 +131,13 @@ export class OrderChangeProcessing {
       if (!this.isEventDone(action) && !action.change_id) {
         summary.difference_sum = MathBN.add(summary.difference_sum, amount)
       }
+
+      const creditLineTotal = (this.order.credit_lines || []).reduce(
+        (acc, creditLine) => MathBN.add(acc, creditLine.amount),
+        MathBN.convert(0)
+      )
+
+      summary.credit_line_total = creditLineTotal
       summary.current_order_total = MathBN.add(
         summary.current_order_total,
         amount
@@ -200,6 +215,7 @@ export class OrderChangeProcessing {
       difference_sum: new BigNumber(summary.difference_sum),
       paid_total: new BigNumber(summary.paid_total),
       refunded_total: new BigNumber(summary.refunded_total),
+      credit_line_total: new BigNumber(summary.credit_line_total),
     } as unknown as OrderSummaryDTO
 
     return orderSummary