recommendation engine 75% polished

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",
+    });
+  }
+};