populate : return list reason

src/modules/return/DTO/return.dto.ts

@@ -64,12 +64,18 @@ export class ReturnOrderDTO {
   @Expose()
   total_price: number;
 
-  @Expose()
+  @Transform(({ value }) => {
-  @Transform(({ value }) => new Date(value).toISOString())
+    if (!value) return null;
+    const date = new Date(value);
+    return isNaN(date.getTime()) ? null : date.toISOString();
+  })
   createdAt: string;
 
-  @Expose()
+  @Transform(({ value }) => {
-  @Transform(({ value }) => new Date(value).toISOString())
+    if (!value) return null;
+    const date = new Date(value);
+    return isNaN(date.getTime()) ? null : date.toISOString();
+  })
   updatedAt: string;
 
   @Expose()

src/modules/return/return.repository.ts

@@ -14,8 +14,8 @@ export class ReturnOrderRepo extends BaseRepository<IReturnOrder> {
   }
 
   async getAllReturnsForAdmin(skip: number, limit: number) {
-    const [result] = await this.model.aggregate([
+    const docs = await this.model.aggregate([
-      // --- 1. Lookup order ---
+      // 1) lookup order
       {
         $lookup: {
           from: "orders",
@@ -26,7 +26,7 @@ export class ReturnOrderRepo extends BaseRepository<IReturnOrder> {
       },
       { $unwind: { path: "$order", preserveNullAndEmptyArrays: true } },
 
-      // --- 2. Lookup return order items ---
+      // 2) lookup return order items
       {
         $lookup: {
           from: "returnorderitems",
@@ -36,8 +36,22 @@ export class ReturnOrderRepo extends BaseRepository<IReturnOrder> {
         },
       },
       { $unwind: { path: "$returnOrderItems", preserveNullAndEmptyArrays: true } },
+      {
+        $lookup: {
+          from: "returnreasons", // collection name of ReturnReasonModel
+          localField: "returnOrderItems.reason",
+          foreignField: "_id",
+          as: "returnOrderItems.reason",
+        },
+      },
+      {
+        $unwind: {
+          path: "$returnOrderItems.reason",
+          preserveNullAndEmptyArrays: true,
+        },
+      },
 
-      // --- 3. Lookup order items ---
+      // 4) lookup orderItem (the original order item)
       {
         $lookup: {
           from: "orderitems",
@@ -49,7 +63,7 @@ export class ReturnOrderRepo extends BaseRepository<IReturnOrder> {
       { $unwind: { path: "$orderItem", preserveNullAndEmptyArrays: true } },
       { $addFields: { "returnOrderItems.orderItem": "$orderItem" } },
 
-      // --- 4. Lookup shop ---
+      // 5) lookup shop from the orderItem
       {
         $lookup: {
           from: "shops",
@@ -61,10 +75,24 @@ export class ReturnOrderRepo extends BaseRepository<IReturnOrder> {
       { $unwind: { path: "$shop", preserveNullAndEmptyArrays: true } },
       { $addFields: { shopName: "$shop.shopName" } },
 
-      // --- 5. Sort before pagination ---
+      // 6) group back so each return order is a single document with array of items
+      {
+        $group: {
+          _id: "$_id",
+          order: { $first: "$order" },
+          status: { $first: "$status" },
+          total_price: { $first: "$total_price" },
+          shopName: { $first: "$shopName" },
+          createdAt: { $first: "$createdAt" },
+          updatedAt: { $first: "$updatedAt" },
+          returnOrderItems: { $push: "$returnOrderItems" },
+        },
+      },
+
+      // 7) sort (by createdAt) before pagination
       { $sort: { createdAt: -1 } },
 
-      // --- 6. Facet for pagination + count ---
+      // 8) facet for pagination + count
       {
         $facet: {
           data: [
@@ -85,10 +113,7 @@ export class ReturnOrderRepo extends BaseRepository<IReturnOrder> {
                   comment: 1,
                   reason: 1,
                   imagesUrl: 1,
-                  orderItem: {
+                  orderItem: 1,
-                    _id: 1,
-                    totalSellingPrice: 1,
-                  },
                 },
               },
             },
@@ -97,7 +122,7 @@ export class ReturnOrderRepo extends BaseRepository<IReturnOrder> {
         },
       },
 
-      // --- 7. Flatten count field ---
+      // // 9) flatten count field
       {
         $addFields: {
           totalCount: { $ifNull: [{ $arrayElemAt: ["$totalCount.count", 0] }, 0] },
@@ -105,9 +130,11 @@ export class ReturnOrderRepo extends BaseRepository<IReturnOrder> {
       },
     ]);
 
+    const result = docs[0] || { data: [], totalCount: 0 };
+
     return {
-      count: result?.totalCount || 0,
+      count: result.totalCount || 0,
-      docs: result?.data || [],
+      docs: result.data || [],
     };
   }