recommendation engine 75% polished

backend/controllers/product.js

@@ -33,7 +33,7 @@ exports.getAllProducts = async (req, res) => {
           I.URL AS ProductImage,
           C.Name AS Category
       FROM Product P
-      JOIN Image_URL I ON p.ProductID = i.ProductID
+      JOIN Image_URL I ON P.ProductID = I.ProductID
       JOIN User U ON P.UserID = U.UserID
       JOIN Category C ON P.CategoryID = C.CategoryID;
     `);
@@ -60,9 +60,10 @@ exports.getProductById = async (req, res) => {
   try {
     const [data] = await db.execute(
       `
-      SELECT p.*, i.URL AS image_url
+      SELECT p.*,U.Name AS SellerName, i.URL AS image_url
       FROM Product p
       LEFT JOIN Image_URL i ON p.ProductID = i.ProductID
+      JOIN User U ON p.UserID = U.UserID
       WHERE p.ProductID = ?
     `,
       [id],

backend/controllers/recommendation.js

@@ -0,0 +1,39 @@
+const db = require("../utils/database");
+
+// TODO: Get the recommondaed product given the userID
+exports.RecommondationByUserId = async (req, res) => {
+  const { id } = req.body;
+  try {
+    const [data, fields] = await db.execute(
+      `
+      SELECT
+          P.ProductID,
+          P.Name AS ProductName,
+          P.Price,
+          P.Date AS DateUploaded,
+          U.Name AS SellerName,
+          I.URL AS ProductImage,
+          C.Name AS Category
+      FROM Product P
+      JOIN Image_URL I ON P.ProductID = I.ProductID
+      JOIN User U ON P.UserID = U.UserID
+      JOIN Category C ON P.CategoryID = C.CategoryID
+      JOIN Recommendation R  ON P.ProductID = R.RecommendedProductID
+      Where R.UserID = ?;`,
+      [id],
+    );
+
+    console.log(data);
+    res.json({
+      success: true,
+      message: "Products fetched successfully",
+      data,
+    });
+  } catch (error) {
+    console.error("Error finding products:", error);
+    return res.status(500).json({
+      found: false,
+      error: "Database error occurred",
+    });
+  }
+};

backend/index.js

@@ -6,6 +6,7 @@ const db = require("./utils/database");
 const userRouter = require("./routes/user");
 const productRouter = require("./routes/product");
 const searchRouter = require("./routes/search");
+const recommendedRouter = require("./routes/recommendation");
 const { generateEmailTransporter } = require("./utils/mail");
 const {
   cleanupExpiredCodes,
@@ -36,6 +37,7 @@ checkDatabaseConnection(db);
 app.use("/api/user", userRouter); //prefix with /api/user
 app.use("/api/product", productRouter); //prefix with /api/product
 app.use("/api/search_products", searchRouter); //prefix with /api/product
+app.use("/api/Engine", recommendedRouter); //prefix with /api/
 
 // Set up a scheduler to run cleanup every hour
 setInterval(cleanupExpiredCodes, 60 * 60 * 1000);

backend/routes/recommendation.js

@@ -0,0 +1,8 @@
+// routes/product.js
+const express = require("express");
+const { RecommondationByUserId } = require("../controllers/recommendation");
+const router = express.Router();
+
+router.post("/recommended", RecommondationByUserId);
+
+module.exports = router;