BETTERZON-38: Added all currently required models with required service classes and routers

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

@@ -0,0 +1,140 @@
+import * as dotenv from 'dotenv';
+
+dotenv.config();
+
+const mariadb = require('mariadb');
+const pool = mariadb.createPool({
+    host: process.env.DB_HOST,
+    user: process.env.DB_USER,
+    password: process.env.DB_PASSWORD,
+    database: process.env.DB_DATABASE,
+    connectionLimit: 5
+});
+
+/**
+ * Data Model Interfaces
+ */
+
+import {Price} from './price.interface';
+import {Prices} from './prices.interface';
+
+
+/**
+ * Service Methods
+ */
+
+export const findAll = async (): Promise<Prices> => {
+    let conn;
+    let priceRows = [];
+    try {
+        conn = await pool.getConnection();
+        const rows = await conn.query('SELECT price_id, product_id, vendor_id, price_in_cents, timestamp FROM prices');
+        for (let row in rows) {
+            if (row !== 'meta') {
+                let price: Price = {
+                    price_id: 0,
+                    price_in_cents: 0,
+                    product_id: 0,
+                    timestamp: new Date(),
+                    vendor_id: 0
+                };
+                const sqlPrice = rows[row];
+
+                price.price_id = sqlPrice.price_id;
+                price.product_id = sqlPrice.product_id;
+                price.vendor_id = sqlPrice.vendor_id;
+                price.price_in_cents = sqlPrice.price_in_cents;
+                price.timestamp = sqlPrice.timestamp;
+                priceRows.push(price);
+            }
+        }
+
+    } catch (err) {
+        throw err;
+    } finally {
+        if (conn) {
+            conn.end();
+        }
+    }
+
+    return priceRows;
+};
+
+export const find = async (id: number): Promise<Price> => {
+    let conn;
+    let price: any;
+    try {
+        conn = await pool.getConnection();
+        const rows = await conn.query('SELECT price_id, product_id, vendor_id, price_in_cents, timestamp FROM prices WHERE price_id = ?', id);
+        for (let row in rows) {
+            if (row !== 'meta') {
+                price = rows[row];
+            }
+        }
+
+    } catch (err) {
+        throw err;
+    } finally {
+        if (conn) {
+            conn.end();
+        }
+    }
+
+    return price;
+};
+
+export const findByProduct = async (product: number): Promise<Prices> => {
+    let conn;
+    let priceRows = [];
+    try {
+        conn = await pool.getConnection();
+        const rows = await conn.query('SELECT price_id, product_id, vendor_id, price_in_cents, timestamp FROM prices WHERE product_id = ?', product);
+        for (let row in rows) {
+            if (row !== 'meta') {
+                priceRows.push(rows[row]);
+            }
+        }
+
+    } catch (err) {
+        throw err;
+    } finally {
+        if (conn) {
+            conn.end();
+        }
+    }
+
+    return priceRows;
+};
+
+// export const create = async (newItem: Product): Promise<void> => {
+//     let conn;
+//     try {
+//         conn = await pool.getConnection();
+//         await conn.query("");
+//
+//     } catch (err) {
+//         throw err;
+//     } finally {
+//         if (conn) conn.end();
+//     }
+// };
+//
+// export const update = async (updatedItem: Product): Promise<void> => {
+//     if (models.products[updatedItem.product_id]) {
+//         models.products[updatedItem.product_id] = updatedItem;
+//         return;
+//     }
+//
+//     throw new Error("No record found to update");
+// };
+//
+// export const remove = async (id: number): Promise<void> => {
+//     const record: Product = models.products[id];
+//
+//     if (record) {
+//         delete models.products[id];
+//         return;
+//     }
+//
+//     throw new Error("No record found to delete");
+// };