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backend/models/comments.model.js

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+import mongoose, { model } from "mongoose";
+const { Schema } = mongoose;
+
+const CommentUserStorySchema = new Schema(
+  {
+    userStoryId: { type: Schema.Types.ObjectId, ref: "UserStory", required: true },
+    commentText: { type: String, required: true },
+    commentedBy: { type: String, required: true },
+  },
+  { timestamps: true }
+);
+
+CommentUserStorySchema.post("save", async function (doc, next) {
+  try {
+    await mongoose.model("UserStory").findByIdAndUpdate(
+      doc.userStoryId,
+      { $addToSet: { comments: doc._id } } // $addToSet avoids duplicates
+    );
+    next();
+  } catch (err) {
+    next(err);
+  }
+});
+
+export default model("Comment", CommentUserStorySchema);

backend/models/userStories.model.js

@@ -0,0 +1,20 @@
+import mongoose, { model } from "mongoose";
+const { Schema } = mongoose;
+
+const UserStorySchema = new Schema(
+  {
+    title: { type: String, required: true },
+    description: { type: String, required: true },
+    status: { type: String, enum: ["Todo", "In-Review", "Sprint-Ready"], default: "Todo" },
+    businessValue: { type: Number, required: true, min: 1, max: 100 },
+    storyPoint: { type: Number, required: true, enum: [1, 2, 3, 5, 8, 13, 21, 34, 55] },
+    assignedTo: { type: String  },
+    comments: [{ type: Schema.Types.ObjectId, ref: "Comment" }],
+  },
+  { timestamps: true }
+);
+
+//Sorting by most recent
+UserStorySchema.index({ createdAt: -1 });
+
+export default model("UserStory", UserStorySchema);