NW5-Manchester-Davood-Moradi-SQL-Week3

2-api/server.js

@@ -0,0 +1,102 @@
+const express = require("express");
+const app = express();
+const { Pool } = require("pg");
+
+const bodyParser = require("body-parser"); // for parsing application/json
+app.use(bodyParser.json()); // for parsing application/json
+
+
+
+app.get("/", (req, res) => {
+  res.send("Database Project");
+});
+
+
+
+const db = new Pool({
+  user: "CYF", // replace with you username
+  host: "localhost",
+  database: "cyf_ecommerce",
+  password: process.env.USER_PASS,
+  port: 5432,
+});
+
+//  Write a SQL query to return all customers
+app.get("/customers", function (req, res) {
+  db.query("SELECT * FROM customers", (error, result) => {
+    res.json(result.rows);
+  });
+});
+
+
+//  Write a SQL query to return all customers specified by id
+app.get("/customers/:id", function (req, res) {
+  const custId = parseInt(req.params.id);
+  db.query(
+    "SELECT * FROM customers WHERE id = $1",
+    [custId],
+    function (err, result) {
+      if (err) {
+        console.error(err);
+        res.status(500).send("Error retrieving customer from database");
+      } else {
+        res.json(result.rows[0]);
+        console.log(result.rows[0]);
+      }
+    }
+  );
+});
+
+ //  Write a SQL query to return all suppliers
+
+app.post("/suppliers", function (req, res) {
+  const newName = req.body.name;
+  const nweAddress = req.body.address;
+  const newCity = req.body.city;
+  const newCountry = req.body.country;
+
+  if (!newName || !nweAddress || !newCity || !newCountry) {
+    return res.status(400).send(" fields required.");
+  }
+
+   // TODO: Write a SQL query to insert a new customer and return the id
+  const query =
+    "INSERT INTO customers (name, address, city, country) " +
+    "VALUES ($1, $2, $3, $4) returning id";
+
+  db.query(query, [newName, nweAddress, newCity, newCountry], (err, result) => {
+    if (err) {
+      console.error(err);
+      return res.status(500).send("Error creating customer.");
+    }
+    const newID = result.rows[0].id;
+    res.send(`New customer added. New Id = ${newID}`);
+  });
+});
+
+
+// Write a SQL query to return all 
+
+app.get("/products", function (req, res) {
+  const productName = req.query.name;
+  console.log(productName);
+
+  db.query(
+    "SELECT * FROM products WHERE product_name LIKE CONCAT('%', $1::text, '%')",
+    [productName],
+    (error, result) => {
+      if (error) {
+        console.error(error);
+        res.status(500).send("Error retrieving products from database");
+      } else {
+        res.json(result.rows);
+      }
+    }
+  );
+});
+
+
+
+app.listen(5000, function () {
+  console.log("Server is listening on port 5000. Ready to accept requests!");
+});