Initialized Project with default middlewares and helpers, connected to Atlas Instance and created Swagger Setup. Created necessary DB models and authentication-authorization logic

models/Product/model.js

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+import { model, Schema, Types } from "mongoose";
+
+const schema = new Schema({
+  sku: {
+    type: String,
+    required: true,
+  },
+  name: {
+    type: String,
+    required: true,
+  },
+  description: {
+    type: String,
+    required: true,
+  },
+  buyingPrice: {
+    type: Number,
+    required: true,
+  },
+  sellingPrice: {
+    type: Number,
+    required: true,
+  },
+  gst: {
+    type: Number,
+    required: true,
+  },
+  stock: {
+    type: Number,
+    required: true,
+  },
+  createdOn: {
+    type: Date,
+    required: true,
+  },
+  createdBy: {
+    type: Types.ObjectId,
+    required: true,
+    ref: "user",
+  },
+  vendors: {
+    type: [Types.ObjectId],
+    required: true,
+    ref: "vendor",
+  },
+});
+
+export default model("product", schema);

models/Product/operations.js

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+import Model from "./model.js";
+
+// Create
+export const createProduct = async (data) => {
+  return await Model.create(data);
+};
+
+// Read (Get by ID)
+export const getProductById = async (id) => {
+  return await Model.findById(id);
+};
+
+// Read (Get by Query)
+export const getProductByQuery = async (query) => {
+  return await Model.findOne(query);
+}
+
+// Read (Get all)
+export const getAllProducts = async () => {
+  return await Model.find();
+};
+
+// Update
+export const updateProduct = async (id, data) => {
+  return await Model.findByIdAndUpdate(id, data, { new: true });
+};
+
+// Aggregate
+export const aggregateProduct = async (pipeline) => {
+  return await Model.aggregate(pipeline);
+};