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"