8a8d2f02fa
- Database schema: tablets, users, loans (junction table) - CLI app: minimal_app.py - Web apps: app.py (Flask), simple_app.py (http.server) - Features: loan management, search, user loans view, project notes - Git structure: CONTRIBUTING.md, .gitignore Generated by Mistral Vibe. Co-Authored-By: Mistral Vibe <vibe@mistral.ai>
555 lines
No EOL
20 KiB
Python
555 lines
No EOL
20 KiB
Python
#!/usr/bin/env python3
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"""
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Simple Tablet Lending and Return Management System
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Using only built-in Python modules (no Flask required)
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"""
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import sqlite3
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import os
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from datetime import datetime
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from http.server import HTTPServer, BaseHTTPRequestHandler
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from urllib.parse import parse_qs, urlparse
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import json
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# Database setup
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DATABASE = 'tablets.db'
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def get_db():
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"""Get database connection"""
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conn = sqlite3.connect(DATABASE)
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conn.row_factory = sqlite3.Row
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return conn
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def init_db():
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"""Initialize database with required tables"""
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with get_db() as conn:
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cursor = conn.cursor()
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# Create tablets table
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cursor.execute('''
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CREATE TABLE IF NOT EXISTS tablets (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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brand TEXT NOT NULL,
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model TEXT NOT NULL,
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serial_number TEXT UNIQUE NOT NULL,
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status TEXT DEFAULT 'available',
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notes TEXT
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)
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''')
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# Create users table
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cursor.execute('''
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CREATE TABLE IF NOT EXISTS users (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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name TEXT NOT NULL,
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email TEXT,
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phone TEXT,
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identification TEXT UNIQUE
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)
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''')
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# Create loans table
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cursor.execute('''
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CREATE TABLE IF NOT EXISTS loans (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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tablet_id INTEGER NOT NULL,
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user_id INTEGER NOT NULL,
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loan_date TEXT NOT NULL,
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return_date TEXT,
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status TEXT DEFAULT 'active',
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FOREIGN KEY (tablet_id) REFERENCES tablets (id),
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FOREIGN KEY (user_id) REFERENCES users (id)
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)
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''')
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conn.commit()
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class SimpleHTTPRequestHandler(BaseHTTPRequestHandler):
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def _set_headers(self, content_type="text/html"):
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self.send_response(200)
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self.send_header('Content-type', content_type)
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self.end_headers()
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def _send_html(self, content):
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self._set_headers()
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self.wfile.write(content.encode('utf-8'))
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def _send_json(self, data):
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self._set_headers(content_type="application/json")
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self.wfile.write(json.dumps(data).encode('utf-8'))
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def _parse_form_data(self):
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content_length = int(self.headers['Content-Length'])
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post_data = self.rfile.read(content_length)
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return parse_qs(post_data.decode('utf-8'))
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def do_GET(self):
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parsed_path = urlparse(self.path)
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if parsed_path.path == '/':
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self._handle_index()
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elif parsed_path.path == '/add_tablet':
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self._handle_add_tablet_form()
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elif parsed_path.path == '/add_user':
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self._handle_add_user_form()
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elif parsed_path.path == '/loan_tablet':
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self._handle_loan_tablet_form()
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elif parsed_path.path == '/history':
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self._handle_history()
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elif parsed_path.path.startswith('/return_tablet/'):
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self._handle_return_tablet(parsed_path.path)
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else:
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self._send_html("<h1>404 Not Found</h1>")
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def do_POST(self):
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parsed_path = urlparse(self.path)
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if parsed_path.path == '/add_tablet':
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self._handle_add_tablet()
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elif parsed_path.path == '/add_user':
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self._handle_add_user()
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elif parsed_path.path == '/loan_tablet':
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self._handle_loan_tablet()
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else:
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self._send_html("<h1>404 Not Found</h1>")
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def _handle_index(self):
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with get_db() as conn:
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cursor = conn.cursor()
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# Get available tablets
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cursor.execute("SELECT * FROM tablets WHERE status = 'available'")
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available_tablets = cursor.fetchall()
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# Get active loans
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cursor.execute('''
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SELECT l.id, t.brand, t.model, t.serial_number, u.name, l.loan_date
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FROM loans l
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JOIN tablets t ON l.tablet_id = t.id
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JOIN users u ON l.user_id = u.id
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WHERE l.status = 'active'
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''')
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active_loans = cursor.fetchall()
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html = f"""
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<!DOCTYPE html>
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<html>
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<head>
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<title>Tablet Management System</title>
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<style>
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body {{ font-family: Arial, sans-serif; margin: 20px; }}
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h1 {{ color: #333; }}
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.nav {{ margin-bottom: 20px; }}
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.nav a {{ margin-right: 15px; text-decoration: none; color: #4CAF50; }}
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table {{ width: 100%; border-collapse: collapse; margin-bottom: 20px; }}
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th, td {{ padding: 10px; text-align: left; border-bottom: 1px solid #ddd; }}
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th {{ background-color: #4CAF50; color: white; }}
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.btn {{ padding: 5px 10px; background-color: #4CAF50; color: white; text-decoration: none; border-radius: 3px; }}
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.btn-danger {{ background-color: #f44336; }}
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</style>
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</head>
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<body>
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<h1>Tablet Management System</h1>
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<div class="nav">
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<a href="/">Home</a>
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<a href="/add_tablet">Add Tablet</a>
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<a href="/add_user">Add User</a>
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<a href="/loan_tablet">Loan Tablet</a>
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<a href="/history">Loan History</a>
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</div>
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<h2>Available Tablets</h2>
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<table>
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<thead>
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<tr>
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<th>Brand</th>
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<th>Model</th>
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<th>Serial Number</th>
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<th>Notes</th>
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</tr>
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</thead>
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<tbody>
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"""
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if available_tablets:
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for tablet in available_tablets:
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html += f"""
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<tr>
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<td>{tablet['brand']}</td>
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<td>{tablet['model']}</td>
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<td>{tablet['serial_number']}</td>
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<td>{tablet['notes'] or '-'}</td>
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</tr>
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"""
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else:
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html += "<tr><td colspan='4'>No available tablets.</td></tr>"
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html += """
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</tbody>
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</table>
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<h2>Active Loans</h2>
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<table>
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<thead>
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<tr>
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<th>Tablet</th>
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<th>Serial Number</th>
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<th>Borrower</th>
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<th>Loan Date</th>
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<th>Actions</th>
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</tr>
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</thead>
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<tbody>
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"""
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if active_loans:
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for loan in active_loans:
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html += f"""
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<tr>
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<td>{loan['brand']} {loan['model']}</td>
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<td>{loan['serial_number']}</td>
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<td>{loan['name']}</td>
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<td>{loan['loan_date']}</td>
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<td><a href='/return_tablet/{loan['id']}' class='btn btn-danger'>Return</a></td>
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</tr>
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"""
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else:
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html += "<tr><td colspan='5'>No active loans.</td></tr>"
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html += """
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</tbody>
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</table>
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</body>
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</html>
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"""
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self._send_html(html)
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def _handle_add_tablet_form(self):
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html = """
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<!DOCTYPE html>
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<html>
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<head>
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<title>Add Tablet</title>
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<style>
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body { font-family: Arial, sans-serif; margin: 20px; }
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.form-group { margin-bottom: 15px; }
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label { display: block; margin-bottom: 5px; }
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input, textarea { width: 100%; padding: 8px; }
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.btn { padding: 8px 16px; background-color: #4CAF50; color: white; border: none; cursor: pointer; }
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</style>
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</head>
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<body>
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<h1>Add New Tablet</h1>
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<form method="POST" action="/add_tablet">
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<div class="form-group">
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<label for="brand">Brand:</label>
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<input type="text" id="brand" name="brand" required>
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</div>
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<div class="form-group">
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<label for="model">Model:</label>
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<input type="text" id="model" name="model" required>
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</div>
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<div class="form-group">
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<label for="serial_number">Serial Number:</label>
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<input type="text" id="serial_number" name="serial_number" required>
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</div>
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<div class="form-group">
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<label for="notes">Notes:</label>
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<textarea id="notes" name="notes"></textarea>
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</div>
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<div class="form-group">
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<button type="submit" class="btn">Add Tablet</button>
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</div>
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</form>
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</body>
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</html>
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"""
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self._send_html(html)
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def _handle_add_tablet(self):
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form_data = self._parse_form_data()
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brand = form_data['brand'][0]
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model = form_data['model'][0]
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serial_number = form_data['serial_number'][0]
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notes = form_data.get('notes', [''])[0]
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try:
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with get_db() as conn:
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cursor = conn.cursor()
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cursor.execute('''
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INSERT INTO tablets (brand, model, serial_number, status, notes)
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VALUES (?, ?, ?, 'available', ?)
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''', (brand, model, serial_number, notes))
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conn.commit()
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self.send_response(303)
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self.send_header('Location', '/')
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self.end_headers()
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except sqlite3.IntegrityError:
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self._send_html("<h1>Error: Serial number already exists!</h1><p><a href='/add_tablet'>Try again</a></p>")
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def _handle_add_user_form(self):
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html = """
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<!DOCTYPE html>
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<html>
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<head>
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<title>Add User</title>
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<style>
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body { font-family: Arial, sans-serif; margin: 20px; }
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.form-group { margin-bottom: 15px; }
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label { display: block; margin-bottom: 5px; }
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input { width: 100%; padding: 8px; }
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.btn { padding: 8px 16px; background-color: #4CAF50; color: white; border: none; cursor: pointer; }
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</style>
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</head>
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<body>
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<h1>Add New User</h1>
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<form method="POST" action="/add_user">
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<div class="form-group">
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<label for="name">Name:</label>
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<input type="text" id="name" name="name" required>
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</div>
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<div class="form-group">
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<label for="email">Email:</label>
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<input type="email" id="email" name="email">
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</div>
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<div class="form-group">
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<label for="phone">Phone:</label>
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<input type="text" id="phone" name="phone">
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</div>
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<div class="form-group">
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<label for="identification">Identification:</label>
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<input type="text" id="identification" name="identification" required>
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</div>
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<div class="form-group">
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<button type="submit" class="btn">Add User</button>
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</div>
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</form>
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</body>
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</html>
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"""
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self._send_html(html)
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def _handle_add_user(self):
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form_data = self._parse_form_data()
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name = form_data['name'][0]
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email = form_data.get('email', [''])[0]
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phone = form_data.get('phone', [''])[0]
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identification = form_data['identification'][0]
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try:
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with get_db() as conn:
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cursor = conn.cursor()
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cursor.execute('''
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INSERT INTO users (name, email, phone, identification)
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VALUES (?, ?, ?, ?)
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''', (name, email, phone, identification))
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conn.commit()
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self.send_response(303)
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self.send_header('Location', '/')
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self.end_headers()
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except sqlite3.IntegrityError:
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self._send_html("<h1>Error: Identification already exists!</h1><p><a href='/add_user'>Try again</a></p>")
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def _handle_loan_tablet_form(self):
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with get_db() as conn:
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cursor = conn.cursor()
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cursor.execute("SELECT * FROM tablets WHERE status = 'available'")
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available_tablets = cursor.fetchall()
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cursor.execute("SELECT * FROM users")
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users = cursor.fetchall()
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html = """
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<!DOCTYPE html>
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<html>
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<head>
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<title>Loan Tablet</title>
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<style>
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body { font-family: Arial, sans-serif; margin: 20px; }
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.form-group { margin-bottom: 15px; }
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label { display: block; margin-bottom: 5px; }
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select { width: 100%; padding: 8px; }
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.btn { padding: 8px 16px; background-color: #4CAF50; color: white; border: none; cursor: pointer; }
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</style>
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</head>
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<body>
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<h1>Loan Tablet</h1>
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<form method="POST" action="/loan_tablet">
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<div class="form-group">
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<label for="tablet_id">Tablet:</label>
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<select id="tablet_id" name="tablet_id" required>
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<option value="">Select a tablet</option>
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"""
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for tablet in available_tablets:
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html += f"<option value='{tablet['id']}'>{tablet['brand']} {tablet['model']} ({tablet['serial_number']})</option>"
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html += """
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</select>
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</div>
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<div class="form-group">
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<label for="user_id">User:</label>
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<select id="user_id" name="user_id" required>
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<option value="">Select a user</option>
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"""
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for user in users:
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html += f"<option value='{user['id']}'>{user['name']} ({user['identification']})</option>"
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html += """
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</select>
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</div>
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<div class="form-group">
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<button type="submit" class="btn">Loan Tablet</button>
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</div>
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</form>
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</body>
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</html>
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"""
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self._send_html(html)
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def _handle_loan_tablet(self):
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form_data = self._parse_form_data()
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tablet_id = form_data['tablet_id'][0]
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user_id = form_data['user_id'][0]
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with get_db() as conn:
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cursor = conn.cursor()
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# Update tablet status
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cursor.execute("UPDATE tablets SET status = 'loaned' WHERE id = ?", (tablet_id,))
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# Create loan record
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loan_date = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
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cursor.execute('''
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INSERT INTO loans (tablet_id, user_id, loan_date, status)
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VALUES (?, ?, ?, 'active')
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''', (tablet_id, user_id, loan_date))
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conn.commit()
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self.send_response(303)
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self.send_header('Location', '/')
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self.end_headers()
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def _handle_return_tablet(self, path):
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loan_id = path.split('/')[-1]
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with get_db() as conn:
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cursor = conn.cursor()
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# Get loan information
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cursor.execute("SELECT tablet_id FROM loans WHERE id = ?", (loan_id,))
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loan = cursor.fetchone()
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if loan:
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tablet_id = loan['tablet_id']
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# Update loan status and return date
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return_date = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
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cursor.execute('''
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UPDATE loans SET status = 'returned', return_date = ? WHERE id = ?
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''', (return_date, loan_id))
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# Update tablet status
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cursor.execute("UPDATE tablets SET status = 'available' WHERE id = ?", (tablet_id,))
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conn.commit()
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self.send_response(303)
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self.send_header('Location', '/')
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self.end_headers()
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def _handle_history(self):
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with get_db() as conn:
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cursor = conn.cursor()
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cursor.execute('''
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SELECT l.id, t.brand, t.model, t.serial_number, u.name,
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l.loan_date, l.return_date, l.status
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FROM loans l
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JOIN tablets t ON l.tablet_id = t.id
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JOIN users u ON l.user_id = u.id
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ORDER BY l.loan_date DESC
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''')
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loans = cursor.fetchall()
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html = """
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<!DOCTYPE html>
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<html>
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<head>
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<title>Loan History</title>
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<style>
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body { font-family: Arial, sans-serif; margin: 20px; }
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h1 { color: #333; }
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.nav { margin-bottom: 20px; }
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.nav a { margin-right: 15px; text-decoration: none; color: #4CAF50; }
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table { width: 100%; border-collapse: collapse; }
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th, td { padding: 10px; text-align: left; border-bottom: 1px solid #ddd; }
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th { background-color: #4CAF50; color: white; }
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</style>
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</head>
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<body>
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<h1>Loan History</h1>
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<div class="nav">
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<a href="/">Home</a>
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<a href="/add_tablet">Add Tablet</a>
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<a href="/add_user">Add User</a>
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<a href="/loan_tablet">Loan Tablet</a>
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<a href="/history">Loan History</a>
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</div>
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<table>
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<thead>
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<tr>
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<th>Tablet</th>
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<th>Serial Number</th>
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<th>Borrower</th>
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<th>Loan Date</th>
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<th>Return Date</th>
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<th>Status</th>
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</tr>
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|
</thead>
|
|
<tbody>
|
|
"""
|
|
|
|
if loans:
|
|
for loan in loans:
|
|
html += f"""
|
|
<tr>
|
|
<td>{loan['brand']} {loan['model']}</td>
|
|
<td>{loan['serial_number']}</td>
|
|
<td>{loan['name']}</td>
|
|
<td>{loan['loan_date']}</td>
|
|
<td>{loan['return_date'] or '-'}</td>
|
|
<td>{loan['status']}</td>
|
|
</tr>
|
|
"""
|
|
else:
|
|
html += "<tr><td colspan='6'>No loan history available.</td></tr>"
|
|
|
|
html += """
|
|
</tbody>
|
|
</table>
|
|
</body>
|
|
</html>
|
|
"""
|
|
|
|
self._send_html(html)
|
|
|
|
def run_server():
|
|
"""Run the HTTP server"""
|
|
server_address = ('', 8000)
|
|
httpd = HTTPServer(server_address, SimpleHTTPRequestHandler)
|
|
print(f"Server running on http://localhost:8000")
|
|
print("Press Ctrl+C to stop the server")
|
|
httpd.serve_forever()
|
|
|
|
if __name__ == '__main__':
|
|
# Initialize database
|
|
init_db()
|
|
|
|
# Run the server
|
|
run_server() |