Initial commit

2025-10-29 20:42:10 +01:00 · 2022-03-26 11:26:10 +01:00
commit bfe995158e
18 changed files with 2843 additions and 0 deletions
--- a/mysql_handler.js
+++ b/mysql_handler.js
@@ -0,0 +1,113 @@
+let mysql = require('mysql')
+let connected = false;
+
+// TODO check here for errors and do not let the db throw an error in order to give the user feedback 
+
+/*
+con.query("SELECT * FROM users", function(err, result){
+    if(err) throw err;
+    } 
+    console.log(result);
+});
+
+*/
+let con = mysql.createConnection({
+    host: "localhost",
+    user: "onlineshop",
+    password: "TestUser321",
+    database: "onlineshop"
+});
+
+con.connect(function(err){
+    if(err) throw err;
+    console.log("Connected to MySQL!");
+    connected = true
+    //createUser("dertyp", "address@email.com", "password", "Janis", "Meister", "Herr");
+    //createAddress("street", "1", "postcode", "city", "country", 18)
+    //createSeller("TEST", "test")
+    //createProduct("name", 1.2, "description", 2, 2, 1, 1)
+    //createReview("TESt", "Content", 6, 18, 1)
+    //createOrder(18, "tasddadse");
+    //createOrderProduct(1.5, 5, 1, 1)
+})
+
+function isConnected(){
+    if(connected){
+        return true;
+    }else{
+        console.log("not connected to mysql")
+        return false;
+    }
+}
+
+function sendQuery(sql){
+    if(isConnected){
+        con.query(sql, function(err, result){
+            if(err){
+                console.log(err);
+                return false;
+            } 
+            return result;
+        });
+    }
+}
+
+// CREATES
+function createOrder(userId, trackingnumber, received = 0){
+    createOrderStatus(trackingnumber);
+
+    sendQuery(`INSERT INTO orders(userId, order_statusId)
+    VALUES ((SELECT id FROM users WHERE id='${userId}'), (SELECT id FROM order_status WHERE trackingnumber='${trackingnumber}'))`);
+}
+
+function createOrderProduct(price, quantity, productId, orderId){
+    r = sendQuery(`INSERT INTO order_products(price, quantity, productId, orderId)
+    VALUES ('${price}','${quantity}',
+    (SELECT id FROM products WHERE id='${productId}'), (SELECT id FROM orders WHERE id='${orderId}'))`);
+}
+
+function createOrderStatus(trackingnumber, received = 0){
+    sendQuery(`INSERT INTO order_status(received, trackingnumber) VALUES (${received}, '${trackingnumber}')`); 
+}
+
+function createReview(title, content, rating, userID, productId){
+    sendQuery(`INSERT INTO reviews(title, content, rating, userID, productId)
+    VALUES ('${title}','${content}','${rating}',
+    (SELECT id FROM users WHERE id='${userID}'), (SELECT id FROM products WHERE id='${productId}'))`);
+    
+}
+
+function createProduct(name, price, description, quantity, delivery_time, sellerId, categoryId){
+    sendQuery(`INSERT INTO products(name, price, description, quantity, delivery_time, sellerId, categoryId)
+     VALUES ('${name}',${price},'${description}','${quantity}','${delivery_time}',
+    (SELECT id FROM sellers WHERE id='${sellerId}'), (SELECT id FROM categories WHERE id='${categoryId}'))`);
+}
+
+function createCategory(name){
+    sendQuery(`INSERT INTO categories(name) VALUES ('${name}')`); 
+}
+
+function createSeller(name, description){
+    sendQuery(`INSERT INTO sellers(name, description) VALUES ('${name}', '${description}')`); 
+}
+
+function createUser(username, email, password, firstname, lastname, gender){
+    result = sendQuery(`INSERT INTO users(username, email, password) VALUES ('${username}','${email}','${password}')`); 
+    if(result){
+        sendQuery(`INSERT INTO userinfos(firstname, lastname, gender, userId) VALUES ('${firstname}','${lastname}','${gender}',
+        (SELECT id FROM users WHERE username='${username}' AND email='${email}'))`);
+        console.log(`User created: ${username}!`)
+    }       
+}
+
+function createAddress(street, housenumber, postcode, city, country, userId){
+    sendQuery(`INSERT INTO addresses(street, housenumber, postcode, city, country, userId) VALUES ('${street}','${housenumber}','${postcode}','${city}','${country}',
+    (SELECT id FROM users WHERE id='${userId}'))`);   
+}
+
+
+
+module.exports = {
+    sendQuery, createOrder, createOrderProduct, createOrderStatus, createReview,
+    createProduct, createCategory, createSeller, createUser, createAddress, con
+}