BETTERZON-98: Adding API endpoint for adding price entries as a registered vendor manager (#51)

Backend/src/models/prices/prices.router.ts

@@ -6,6 +6,7 @@ import express, {Request, Response} from 'express';
 import * as PriceService from './prices.service';
 import {Price} from './price.interface';
 import {Prices} from './prices.interface';
+import * as UserService from '../users/users.service';
 
 
 /**
@@ -100,3 +101,28 @@ pricesRouter.get('/byProduct/list/:ids', async (req: Request, res: Response) =>
         res.status(500).send(JSON.stringify({'message': 'Internal Server Error. Try again later.'}));
     }
 });
+
+// POST prices/
+pricesRouter.post('/', async (req: Request, res: Response) => {
+    try {
+        // Authenticate user
+        const user_ip = req.connection.remoteAddress ?? '';
+        const user = await UserService.checkSessionWithCookie(req.cookies.betterauth, user_ip);
+
+        // Get required parameters
+        const vendor_id = req.body.vendor_id;
+        const product_id = req.body.product_id;
+        const price_in_cents = req.body.price_in_cents;
+
+        const success = await PriceService.createPriceEntry(user.user_id, vendor_id, product_id, price_in_cents);
+
+        if (success) {
+            res.sendStatus(200);
+        } else {
+            res.sendStatus(500);
+        }
+    } catch (e) {
+        console.log('Error handling a request: ' + e.message);
+        res.status(500).send(JSON.stringify({'message': 'Internal Server Error. Try again later.'}));
+    }
+});

Backend/src/models/prices/prices.service.ts

@@ -376,3 +376,29 @@ export const findListByProducts = async (productIds: [number]): Promise<Prices>
 
     return priceRows;
 };
+
+export const createPriceEntry = async (user_id: number, vendor_id: number, product_id: number, price_in_cents: number): Promise<Boolean> => {
+    let conn;
+    try {
+        conn = await pool.getConnection();
+
+        // Check if the user is authorized to manage the requested vendor
+        const user_vendor_rows = await conn.query('SELECT vendor_id FROM vendors WHERE vendor_id = ? AND admin_id = ?', [vendor_id, user_id]);
+        if (user_vendor_rows.length !== 1) {
+            return false;
+        }
+
+        // Create price entry
+        const res = await conn.query('INSERT INTO prices (product_id, vendor_id, price_in_cents) VALUES (?,?,?)', [product_id, vendor_id, price_in_cents]);
+
+        // If there are more / less than 1 affected rows, return false
+        return res.affectedRows === 1;
+
+    } catch (err) {
+        throw err;
+    } finally {
+        if (conn) {
+            conn.end();
+        }
+    }
+};

Backend/src/models/products/products.router.ts

@@ -87,3 +87,22 @@ productsRouter.get('/list/:ids', async (req: Request, res: Response) => {
         res.status(500).send(JSON.stringify({'message': 'Internal Server Error. Try again later.'}));
     }
 });
+
+// GET products/vendor/:id
+productsRouter.get('/vendor/:id', async (req: Request, res: Response) => {
+    const id: number = parseInt(req.params.id, 10);
+
+    if (!id) {
+        res.status(400).send('Missing parameters.');
+        return;
+    }
+
+    try {
+        const products: Products = await ProductService.findByVendor(id);
+
+        res.status(200).send(products);
+    } catch (e) {
+        console.log('Error handling a request: ' + e.message);
+        res.status(500).send(JSON.stringify({'message': 'Internal Server Error. Try again later.'}));
+    }
+});

Backend/src/models/products/products.service.ts

@@ -159,3 +159,41 @@ export const findList = async (ids: [number]): Promise<Products> => {
 
     return prodRows;
 };
+
+/**
+ * Fetches and returns the products that the given vendor has price entries for
+ * @param id The id of the vendor to fetch the products for
+ */
+export const findByVendor = async (id: number): Promise<Products> => {
+    let conn;
+    let prodRows = [];
+    try {
+        conn = await pool.getConnection();
+
+        // Get the relevant product ids
+        let relevant_prod_ids = [];
+        const relevantProds = await conn.query('SELECT product_id FROM prices WHERE vendor_id = ? GROUP BY product_id', id);
+        for (let row in relevantProds) {
+            if (row !== 'meta') {
+                relevant_prod_ids.push(relevantProds[row].product_id);
+            }
+        }
+
+        // Fetch products
+        const rows = await conn.query('SELECT product_id, name, asin, is_active, short_description, long_description, image_guid, date_added, last_modified, manufacturer_id, selling_rank, category_id FROM products WHERE product_id IN (?)', [relevant_prod_ids]);
+        for (let row in rows) {
+            if (row !== 'meta') {
+                prodRows.push(rows[row]);
+            }
+        }
+
+    } catch (err) {
+        throw err;
+    } finally {
+        if (conn) {
+            conn.end();
+        }
+    }
+
+    return prodRows;
+};

Backend/src/models/vendors/vendors.service.ts

@@ -171,10 +171,7 @@ export const deactivateListing = async (user_id: number, vendor_id: number, prod
 
         const status = await conn.query('UPDATE prices SET active_listing = false WHERE vendor_id = ? and product_id = ?', [vendor_id, product_id]);
 
-        if(status.affectedRows > 0){
-            return true;
-        }
-        return false;
+        return status.affectedRows > 0;
     } catch (err) {
         throw err;
     } finally {