Dwayne Fritz

Section A Scenario Question 1-Computer Part Ordering System ServerModule from http.server import BaseHTTPRequestHandler, HTTPServer import json computer_parts = { "monitor": {"name": "Monitor", "quantity": 100, "price": 120.00}, "keyboard-wireless": {"name": "Keyboard-Wireless", "quantity": 200, "price": 30.00}, "cable": {"name": "Cable", "quantity": 150, "price": 200.00}, "webcam": {"name": "Webcam", "quantity": 250, "price": 25.00}, } class RequestHandler(BaseHTTPRequestHandler): def do_GET(self): if self.path == '/parts': self.send_response(200) self.send_header('Content-type', 'application/json') self.end_headers() self.wfile.write(json.dumps(computer_parts).encode()) else: self.send_response(404) self.end_headers() def do_POST(self): if self.path == '/order': content_length = int(self.headers['Content-Length']) post_data = self.rfile.read(content_length) order = json.loads(post_data.decode()) for part in order: if part in computer_parts and computer_parts[part]['quantity'] >= order[part]: computer_parts[part]['quantity'] -= order[part] else: self.send_response(400) self.send_header('Content-type', 'application/json') self.end_headers() self.wfile.write(json.dumps({"error": f"Not enough stock for {part}"}).encode()) return self.send_response(200) self.send_header('Content-type', 'application/json') self.end_headers() self.wfile.write(json.dumps({"message": "Order placed successfully"}).encode()) else: self.send_response(404) self.end_headers() def run_server(): server_address = ('', 8080) httpd = HTTPServer(server_address, RequestHandler) print('Running server...') httpd.serve_forever() if __name__ == '__main__': run_server() CustomerModule import http.client import json BASE_URL = '127.0.0.1' PORT = 8080 def browse_parts(): conn = http.client.HTTPConnection(BASE_URL, PORT) conn.request("GET", "/parts") response = conn.getresponse() data = response.read() parts = json.loads(data.decode()) conn.close() for part, details in parts.items(): print(f"{part.capitalize()}: {details['quantity']} available at ${details['price']} each") def place_order(): order = {} while True: part = input("Enter the part to order (or 'done' to finish): ").lower() if part == 'done': break quantity = int(input(f"Enter the quantity for {part}: ")) order[part] = quantity conn = http.client.HTTPConnection(BASE_URL, PORT) headers = {'Content-type': 'application/json'} conn.request("POST", "/order", body=json.dumps(order), headers=headers) response = conn.getresponse() data = response.read() print(json.loads(data.decode())) conn.close() if __name__ == '__main__': while True: print("\n1. Browse parts\n2. Place an order\n3. Exit") choice = input("Choose an option: ") if choice == '1': browse_parts() elif choice == '2': place_order() elif choice == '3': break else: print("Invalid option, please try again.") Output-Order Item Successful Question 2 – Implementing CRUD Operations from http.server import BaseHTTPRequestHandler, HTTPServer import json inventory = { "monitor": {"name": "Monitor", "quantity": 100, "price": 2250.00}, # Price in ZAR "keyboard-wireless": {"name": "Keyboard-Wireless", "quantity": 200, "price": 600.00}, # Price in ZAR "cable": {"name": "Cable", "quantity": 300, "price": 150.00}, # Price in ZAR "webcam": {"name": "Webcam", "quantity": 150, "price": 750.00}, # Price in ZAR } orders = [] class RequestHandler(BaseHTTPRequestHandler): def do_GET(self): if self.path == '/parts': self.send_response(200) self.send_header('Content-type', 'application/json') self.end_headers() self.wfile.write(json.dumps(inventory).encode()) elif self.path.startswith('/order/'): order_id = self.path.split('/')[-1] order = next((order for order in orders if order['id'] == order_id), None) if order: self.send_response(200) self.send_header('Content-type', 'application/json') self.end_headers() self.wfile.write(json.dumps(order).encode()) else: self.send_response(404) self.end_headers() else: self.send_response(404) self.end_headers() def do_POST(self): if self.path == '/order': content_length = int(self.headers['Content-Length']) post_data = self.rfile.read(content_length) order = json.loads(post_data.decode()) order_id = str(len(orders) + 1) order['id'] = order_id for part in order['items']: if part in inventory and inventory[part]['quantity'] >= order['items'][part]: inventory[part]['quantity'] -= order['items'][part] else: self.send_response(400) self.send_header('Content-type', 'application/json') self.end_headers() self.wfile.write(json.dumps({"error": f"Not enough stock for {part}"}).encode()) return orders.append(order) self.send_response(200) self.send_header('Content-type', 'application/json') self.end_headers() self.wfile.write(json.dumps({"message": "Order placed successfully", "order_id": order_id}).encode()) elif self.path == '/parts': content_length = int(self.headers['Content-Length']) post_data = self.rfile.read(content_length) new_part = json.loads(post_data.decode()) part_id = new_part['name'].lower().replace(' ', '-') inventory[part_id] = new_part self.send_response(201) self.send_header('Content-type', 'application/json') self.end_headers() self.wfile.write(json.dumps({"message": "Part added successfully"}).encode()) else: self.send_response(404) self.end_headers() def do_PUT(self): if self.path.startswith('/parts/'): part_id = self.path.split('/')[-1] if part_id in inventory: content_length = int(self.headers['Content-Length']) put_data = self.rfile.read(content_length) updated_part = json.loads(put_data.decode()) inventory[part_id].update(updated_part) self.send_response(200) self.send_header('Content-type', 'application/json') self.end_headers() self.wfile.write(json.dumps({"message": "Part updated successfully"}).encode()) else: self.send_response(404) self.end_headers() else: self.send_response(404) self.end_headers() def do_DELETE(self): if self.path.startswith('/parts/'): part_id = self.path.split('/')[-1] if part_id in inventory: del inventory[part_id] self.send_response(200) self.send_header('Content-type', 'application/json') self.end_headers() self.wfile.write(json.dumps({"message": "Part deleted successfully"}).encode()) else: self.send_response(404) self.end_headers() else: self.send_response(404) self.end_headers() def run_server(): server_address = ('', 8080) httpd = HTTPServer(server_address, RequestHandler) print('Running server...') httpd.serve_forever() if __name__ == '__main__': run_server() Customer Moduleimport http.client import json BASE_URL = '127.0.0.1' PORT = 8080 def browse_parts(): conn = http.client.HTTPConnection(BASE_URL, PORT) conn.request("GET", "/parts") response = conn.getresponse() data = response.read() parts = json.loads(data.decode()) conn.close() for part, details in parts.items(): print(f"{part.capitalize()}: {details['quantity']} available at R{details['price']} each") def place_order(): order = {"items": {}} while True: part = input("Enter the part to order (or 'done' to finish): ").lower() if part == 'done': break quantity = int(input(f"Enter the quantity for {part}: ")) order["items"][part] = quantity conn = http.client.HTTPConnection(BASE_URL, PORT) headers = {'Content-type': 'application/json'} conn.request("POST", "/order", body=json.dumps(order), headers=headers) response = conn.getresponse() data = response.read() print(json.loads(data.decode())) conn.close() def add_part(): part = input("Enter the part name: ").lower().replace(' ', '-') quantity = int(input(f"Enter the quantity for {part}: ")) price = float(input(f"Enter the price for {part}: ")) new_part = {"name": part, "quantity": quantity, "price": price} conn = http.client.HTTPConnection(BASE_URL, PORT) headers = {'Content-type': 'application/json'} conn.request("POST", "/parts", body=json.dumps(new_part), headers=headers) response = conn.getresponse() data = response.read() print(json.loads(data.decode())) conn.close() def update_part(): part = input("Enter the part name to update: ").lower().replace(' ', '-') quantity = int(input(f"Enter the new quantity for {part}: ")) price = float(input(f"Enter the new price for {part}: ")) updated_part = {"quantity": quantity, "price": price} conn = http.client.HTTPConnection(BASE_URL, PORT) headers = {'Content-type': 'application/json'} conn.request("PUT", f"/parts/{part}", body=json.dumps(updated_part), headers=headers) response = conn.getresponse() data = response.read() print(json.loads(data.decode())) conn.close() def delete_part(): part = input("Enter the part name to delete: ").lower().replace(' ', '-') conn = http.client.HTTPConnection(BASE_URL, PORT) conn.request("DELETE", f"/parts/{part}") response = conn.getresponse() data = response.read() print(json.loads(data.decode())) conn.close() if __name__ == '__main__': while True: print("\n1. Browse parts\n2. Place an order\n3. Add a part\n4. Update a part\n5. Delete a part\n6. Exit") choice = input("Choose an option: ") if choice == '1': browse_parts() elif choice == '2': place_order() elif choice == '3': add_part() elif choice == '4': update_part() elif choice == '5': delete_part() elif choice == '6': break else: print("Invalid option, please try again.") Output- Question 3 – Security Implementation from http.server import BaseHTTPRequestHandler, HTTPServer import json from base64 import b64decode inventory = { "monitor": {"name": "Monitor", "quantity": 100, "price": 2250.00}, # Price in ZAR "keyboard-wireless": {"name": "Keyboard-Wireless", "quantity": 200, "price": 600.00}, # Price in ZAR "cable": {"name": "Cable", "quantity": 300, "price": 150.00}, # Price in ZAR "webcam": {"name": "Webcam", "quantity": 150, "price": 750.00}, } orders = [] users = {"user1": "password1"} class RequestHandler(BaseHTTPRequestHandler): def do_GET(self): if self.path == '/parts': self.send_response(200) self.send_header('Content-type', 'application/json') self.end_headers() self.wfile.write(json.dumps(inventory).encode()) elif self.path.startswith('/order/'): order_id = self.path.split('/')[-1] # Price in ZAR order = next((order for order in orders if order['id'] == order_id), None) if order: self.send_response(200) self.send_header('Content-type', 'application/json') self.end_headers() self.wfile.write(json.dumps(order).encode()) else: self.send_response(404) self.end_headers() else: self.send_response(404) self.end_headers() def do_POST(self): if self.path == '/order': auth_header = self.headers.get('Authorization') if auth_header and auth_header.startswith('Basic '): encoded_credentials = auth_header.split(' ')[1] decoded_credentials = b64decode(encoded_credentials).decode('utf-8') username, password = decoded_credentials.split(':') if users.get(username) == password: content_length = int(self.headers['Content-Length']) post_data = self.rfile.read(content_length) order = json.loads(post_data.decode()) order_id = str(len(orders) + 1) order['id'] = order_id for part in order['items']: if part in inventory and inventory[part]['quantity'] >= order['items'][part]: inventory[part]['quantity'] -= order['items'][part] else: self.send_response(400) self.send_header('Content-type', 'application/json') self.end_headers() self.wfile.write(json.dumps({"error": f"Not enough stock for {part}"}).encode()) return orders.append(order) self.send_response(200) self.send_header('Content-type', 'application/json') self.end_headers() self.wfile.write(json.dumps({"message": "Order placed successfully", "order_id": order_id}).encode()) else: self.send_response(401) self.end_headers() else: self.send_response(401) self.end_headers() else: self.send_response(404) self.end_headers() def run_server(): server_address = ('', 8080) print('Running server...') (HTTPServer(server_address, RequestHandler)).serve_forever() if __name__ == '__main__': run_server() Customer Module import http.client import json from base64 import b64encode BASE_URL = '127.0.0.1' PORT = 8080 username = None password = None def login(): global username, password username = input("Enter username: ") password = input("Enter password: ") print("Login successful!") def browse_parts(): conn = http.client.HTTPConnection(BASE_URL, PORT) conn.request("GET", "/parts") response = conn.getresponse() data = response.read() parts = json.loads(data.decode()) conn.close() for part, details in parts.items(): print(f"{part.capitalize()}: {details['quantity']} available at R{details['price']} each") def place_order(): if not username or not password: print("Please login first.") return order = {"items": {}} while True: part = input("Enter the part to order (or 'done' to finish): ").lower() if part == 'done': break quantity = int(input(f"Enter the quantity for {part}: ")) order["items"][part] = quantity conn = http.client.HTTPConnection(BASE_URL, PORT) credentials = f"{username}:{password}" encoded_credentials = b64encode(credentials.encode('utf-8')).decode('utf-8') headers = {'Content-type': 'application/json', 'Authorization': f'Basic {encoded_credentials}'} conn.request("POST", "/order", body=json.dumps(order), headers=headers) response = conn.getresponse() data = response.read() print(json.loads(data.decode())) conn.close() if __name__ == '__main__': while True: print("\n1. Login\n2. Browse parts\n3. Place an order\n4. Exit") choice = input("Choose an option: ") if choice == '1': login() elif choice == '2': browse_parts() elif choice == '3': place_order() elif choice == '4': break else: print("Invalid option, please try again.") Output- Question 4 – Email Report Email Receiptfrom http.server import BaseHTTPRequestHandler, HTTPServer import json from base64 import b64decode import smtplib from email.mime.multipart import MIMEMultipart from email.mime.text import MIMEText import threading import time from datetime import datetime inventory = { "monitor": {"name": "Monitor", "quantity": 100, "price": 2250.00}, # Price in ZAR "keyboard-wireless": {"name": "Keyboard-Wireless", "quantity": 200, "price": 600.00}, # Price in ZAR "cable": {"name": "Cable", "quantity": 300, "price": 150.00}, # Price in ZAR "webcam": {"name": "Webcam", "quantity": 150, "price": 750.00}, # Price in ZAR } orders = [] users = {"user1": "password1"} def send_email(to_address, subject, body): from_address =- password = "your_password" msg = MIMEMultipart() msg['From'] = from_address msg['To'] = to_address msg['Subject'] = subject msg.attach(MIMEText(body, 'plain')) server = smtplib.SMTP('smtp.gmail.com', 587) server.starttls() server.login(from_address, password) text = msg.as_string() server.sendmail(from_address, to_address, text) server.quit() class RequestHandler(BaseHTTPRequestHandler): def do_GET(self): if self.path == '/parts': self.send_response(200) self.send_header('Content-type', 'application/json') self.end_headers() self.wfile.write(json.dumps(inventory).encode()) elif self.path.startswith('/order/'): order_id = self.path.split('/')[-1] order = next((order for order in orders if order['id'] == order_id), None) if order: self.send_response(200) self.send_header('Content-type', 'application/json') self.end_headers() self.wfile.write(json.dumps(order).encode()) else: self.send_response(404) self.end_headers() else: self.send_response(404) self.end_headers() def do_POST(self): if self.path == '/order': auth_header = self.headers.get('Authorization') if auth_header and auth_header.startswith('Basic '): encoded_credentials = auth_header.split(' ')[1] decoded_credentials = b64decode(encoded_credentials).decode('utf-8') username, password = decoded_credentials.split(':') if users.get(username) == password: content_length = int(self.headers['Content-Length']) post_data = self.rfile.read(content_length) order = json.loads(post_data.decode()) order_id = str(len(orders) + 1) order['id'] = order_id for part in order['items']: if part in inventory and inventory[part]['quantity'] >= order['items'][part]: inventory[part]['quantity'] -= order['items'][part] else: self.send_response(400) self.send_header('Content-type', 'application/json') self.end_headers() self.wfile.write(json.dumps({"error": f"Not enough stock for {part}"}).encode()) return orders.append(order) self.send_response(200) self.send_header('Content-type', 'application/json') self.end_headers() self.wfile.write(json.dumps({"message": "Order placed successfully", "order_id": order_id}).encode()) to_address =- subject = "Order Confirmation" body = f"Your order {order_id} has been confirmed. Details: {json.dumps(order, indent=4)}" send_email(to_address, subject, body) else: self.send_response(401) self.end_headers() else: self.send_response(401) self.end_headers() else: self.send_response(404) self.end_headers() def send_monthly_summary(): while True: now = datetime.now() if now.day == 1 and now.hour == 0 and now.minute == 0: to_address =- subject = "Monthly Purchase Summary" body = f"Summary of all purchases for the month:\n\n{json.dumps(orders, indent=4)}" send_email(to_address, subject, body) time.sleep(60) def run_server(): server_address = ('', 8080) httpd = HTTPServer(server_address, RequestHandler) print('Running server...') httpd.serve_forever() if __name__ == '__main__': server_thread = threading.Thread(target=run_server) scheduler_thread = threading.Thread(target=send_monthly_summary) server_thread.start() scheduler_thread.start() This script will allow the system to send receipts to customers each time there is an order confirmed. Monthly Email Summaryimport smtplib from email.mime.multipart import MIMEMultipart from email.mime.text import MIMEText import threading import time from datetime import datetime import json orders = [ {"id": "1", "items": {"monitor": 2, "keyboard-wireless": 1}, "total": 5100.00}, {"id": "2", "items": {"cable": 5, "webcam": 2}, "total": 1800.00}, ] def send_email(to_address, subject, body): from_address =- password = "your_password" msg = MIMEMultipart() msg['From'] = from_address msg['To'] = to_address msg['Subject'] = subject msg.attach(MIMEText(body, 'plain')) server = smtplib.SMTP('smtp.gmail.com', 587) server.starttls() server.login(from_address, password) text = msg.as_string() server.sendmail(from_address, to_address, text) server.quit() def send_monthly_summary(): while True: now = datetime.now() if now.day == 1 and now.hour == 0 and now.minute == 0: to_address =- subject = "Monthly Purchase Summary" body = f"Summary of all purchases for the month:\n\n{json.dumps(orders, indent=4)}" send_email(to_address, subject, body) time.sleep(60) if __name__ == '__main__': scheduler_thread = threading.Thread(target=send_monthly_summary) scheduler_thread.start() This script will send a monthly email summary to the customer of the orders. Bibliography Itsy-Bitsy-Spider - Overview. (n.d.). Retrieved from https://github.com/Itsy-Bitsy-Spider Langen, J. de. (2023). Sending Emails With Python. Retrieved from https://realpython.com/python-send-email/ Top 12 Ways to Send Emails with Python: Solutions and Examples. (2024). Retrieved from https://sqlpey.com/python/top-12-ways-to-send-emails-with-python/ email - An email and MIME handling package. (n.d.-a). Retrieved from https://docs.python.org/3/library/email.html smtplib - SMTP protocol client. (n.d.-b). Retrieved from https://docs.python.org/3/library/smtplib.html