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OpenLearnX/backend/main.py
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5t4l1n 8c56eb9e36 some kinda
2025-07-26 22:27:23 +05:30

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from flask import Flask, jsonify, request
from flask_cors import CORS
from dotenv import load_dotenv
import os
import asyncio
from mongo_service import MongoService
from web3_service import Web3Service
import logging
# Load environment variables first
load_dotenv()
# Import all route blueprints
from routes import auth, test_flow, certificate, dashboard, courses, quizzes, admin, exam, compiler
# Import services after loading env vars
try:
from services.wallet_service import wallet_service
from services.real_compiler_service import real_compiler_service
WALLET_SERVICE_AVAILABLE = True
COMPILER_SERVICE_AVAILABLE = True
except ImportError as e:
logging.warning(f"Service import failed: {e}")
wallet_service = None
real_compiler_service = None
WALLET_SERVICE_AVAILABLE = False
COMPILER_SERVICE_AVAILABLE = False
# Initialize Flask app
app = Flask(__name__)
# Enhanced CORS configuration for coding exam platform
CORS(app, resources={
r"/api/*": {
"origins": [
"http://localhost:3000",
"http://127.0.0.1:3000",
"http://localhost:3001",
"http://127.0.0.1:3001"
],
"methods": ["GET", "POST", "PUT", "DELETE", "OPTIONS"],
"allow_headers": [
"Content-Type",
"Authorization",
"X-Requested-With",
"Accept",
"Origin"
],
"supports_credentials": True,
"expose_headers": ["Authorization"]
}
})
# Configuration
app.config['SECRET_KEY'] = os.getenv('SECRET_KEY', 'openlearnx-secret-key-2024')
app.config['MONGODB_URI'] = os.getenv('MONGODB_URI', 'mongodb://localhost:27017/')
app.config['WEB3_PROVIDER_URL'] = os.getenv('WEB3_PROVIDER_URL', 'http://127.0.0.1:8545')
app.config['CONTRACT_ADDRESS'] = os.getenv('CONTRACT_ADDRESS', '0x739f0aCef964f87Bc7974D972a811f8417d74B4C')
app.config['MINTER_PRIVATE_KEY'] = os.getenv('MINTER_PRIVATE_KEY', '0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80')
app.config['ADMIN_TOKEN'] = os.getenv('ADMIN_TOKEN', 'admin-secret-key')
# Blockchain configuration
app.config['IPFS_GATEWAY'] = os.getenv('IPFS_GATEWAY', 'https://ipfs.infura.io:5001')
app.config['IPFS_PROJECT_ID'] = os.getenv('IPFS_PROJECT_ID')
app.config['IPFS_PROJECT_SECRET'] = os.getenv('IPFS_PROJECT_SECRET')
# Configure logging BEFORE initializing services
logging.basicConfig(
level=logging.INFO,
format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
handlers=[
logging.StreamHandler(),
logging.FileHandler('openlearnx.log') if os.access('.', os.W_OK) else logging.NullHandler()
]
)
logger = logging.getLogger(__name__)
# Initialize services with error handling
try:
mongo_service = MongoService(app.config['MONGODB_URI'])
app.config['MONGO_SERVICE'] = mongo_service
MONGO_SERVICE_AVAILABLE = True
except Exception as e:
logging.error(f"Failed to initialize MongoDB service: {e}")
mongo_service = None
MONGO_SERVICE_AVAILABLE = False
try:
web3_service = Web3Service(
app.config['WEB3_PROVIDER_URL'],
app.config['CONTRACT_ADDRESS']
)
app.config['WEB3_SERVICE'] = web3_service
WEB3_SERVICE_AVAILABLE = True
except Exception as e:
logging.error(f"Failed to initialize Web3 service: {e}")
web3_service = None
WEB3_SERVICE_AVAILABLE = False
# Make services available to routes
if WALLET_SERVICE_AVAILABLE:
app.config['WALLET_SERVICE'] = wallet_service
if COMPILER_SERVICE_AVAILABLE:
app.config['REAL_COMPILER_SERVICE'] = real_compiler_service
# ✅ DEFINE check_docker_availability BEFORE using it
def check_docker_availability():
"""Check if Docker is available for compiler service"""
try:
import docker
client = docker.from_env()
client.ping()
return True
except Exception:
return False
# Register all blueprints with error handling
blueprints = [
(auth.bp, '/api/auth'),
(test_flow.bp, '/api/test'),
(certificate.bp, '/api/certificate'),
(dashboard.bp, '/api/dashboard'),
(courses.bp, '/api/courses'),
(quizzes.bp, '/api/quizzes'),
(admin.bp, '/api/admin'),
(exam.bp, '/api/exam'), # Coding exam routes
(compiler.bp, '/api/compiler'), # Compiler routes
]
for blueprint, url_prefix in blueprints:
try:
app.register_blueprint(blueprint, url_prefix=url_prefix)
logging.info(f"✅ Registered blueprint: {url_prefix}")
print(f"✅ Registered blueprint: {url_prefix}")
except Exception as e:
logging.error(f"❌ Failed to register blueprint {url_prefix}: {e}")
print(f"❌ Failed to register blueprint {url_prefix}: {e}")
# Debug routes
@app.route('/debug/routes')
def debug_routes():
"""Debug route to see all registered routes"""
routes = []
for rule in app.url_map.iter_rules():
routes.append({
'endpoint': rule.endpoint,
'methods': list(rule.methods),
'rule': str(rule)
})
return jsonify({
"total_routes": len(routes),
"routes": sorted(routes, key=lambda x: x['rule'])
})
@app.route('/debug/exam-routes')
def debug_exam_routes():
"""Debug exam-specific routes"""
exam_routes = []
for rule in app.url_map.iter_rules():
if '/exam' in str(rule):
exam_routes.append({
'endpoint': rule.endpoint,
'methods': list(rule.methods),
'rule': str(rule)
})
return jsonify({
"exam_routes": exam_routes,
"exam_blueprint_registered": hasattr(exam, 'bp')
})
@app.route('/debug/services')
def debug_services():
"""Debug service availability"""
return jsonify({
"services": {
"mongodb": MONGO_SERVICE_AVAILABLE,
"web3": WEB3_SERVICE_AVAILABLE,
"wallet": WALLET_SERVICE_AVAILABLE,
"compiler": COMPILER_SERVICE_AVAILABLE,
"docker": check_docker_availability()
},
"app_config_keys": list(app.config.keys()),
"blueprint_count": len(app.blueprints)
})
# Direct exam test route
@app.route('/api/exam/test-direct', methods=['GET', 'POST', 'OPTIONS'])
def test_exam_direct():
"""Direct test route for exam functionality"""
if request.method == "OPTIONS":
response = jsonify({'status': 'ok'})
response.headers.add("Access-Control-Allow-Origin", "*")
response.headers.add("Access-Control-Allow-Headers", "Content-Type,Authorization")
response.headers.add("Access-Control-Allow-Methods", "GET,POST,OPTIONS")
return response
return jsonify({
"success": True,
"message": "Direct exam route is working",
"method": request.method,
"timestamp": os.popen('date').read().strip(),
"data": request.json if request.method == "POST" else None
})
# Health check endpoints
@app.route('/')
def health_check():
return jsonify({
"status": "OpenLearnX API is running",
"version": "2.0.0",
"features": {
"blockchain": WEB3_SERVICE_AVAILABLE,
"coding_exams": COMPILER_SERVICE_AVAILABLE,
"wallet_auth": WALLET_SERVICE_AVAILABLE,
"database": MONGO_SERVICE_AVAILABLE,
"real_compiler": COMPILER_SERVICE_AVAILABLE
},
"endpoints": {
"auth": "/api/auth",
"courses": "/api/courses",
"admin": "/api/admin",
"dashboard": "/api/dashboard",
"certificates": "/api/certificate",
"quizzes": "/api/quizzes",
"coding_exams": "/api/exam",
"compiler": "/api/compiler"
},
"debug_endpoints": [
"/debug/routes",
"/debug/exam-routes",
"/debug/services",
"/api/exam/test-direct"
]
})
@app.route('/api/health')
def api_health():
"""Comprehensive API health check"""
health_status = {
"status": "healthy",
"timestamp": os.popen('date').read().strip(),
"services": {
"mongodb": MONGO_SERVICE_AVAILABLE,
"web3": WEB3_SERVICE_AVAILABLE,
"wallet": WALLET_SERVICE_AVAILABLE,
"compiler": COMPILER_SERVICE_AVAILABLE,
"docker": check_docker_availability()
},
"configuration": {
"cors_enabled": True,
"debug_mode": app.debug,
"secret_key_set": bool(app.config.get('SECRET_KEY')),
"admin_token_set": bool(app.config.get('ADMIN_TOKEN'))
},
"blueprints_registered": list(app.blueprints.keys())
}
# Check MongoDB connection
if MONGO_SERVICE_AVAILABLE:
try:
from pymongo import MongoClient
client = MongoClient(app.config['MONGODB_URI'])
client.admin.command('ismaster')
health_status["services"]["mongodb_connection"] = "connected"
except Exception as e:
health_status["services"]["mongodb_connection"] = f"error: {str(e)}"
health_status["status"] = "degraded"
# Check Web3 connection
if WEB3_SERVICE_AVAILABLE:
try:
if web3_service and web3_service.w3.is_connected():
health_status["services"]["web3_connection"] = "connected"
else:
health_status["services"]["web3_connection"] = "disconnected"
health_status["status"] = "degraded"
except Exception as e:
health_status["services"]["web3_connection"] = f"error: {str(e)}"
health_status["status"] = "degraded"
status_code = 200 if health_status["status"] == "healthy" else 503
return jsonify(health_status), status_code
@app.route('/api/admin/health')
def admin_health():
"""Admin-specific health check"""
return jsonify({
"status": "Admin API is running",
"admin_token_configured": bool(app.config.get('ADMIN_TOKEN')),
"admin_endpoints": [
"/api/admin/dashboard",
"/api/admin/courses",
"/api/admin/courses/<id>",
"/api/admin/test",
"/api/admin/initialize"
],
"exam_endpoints": [
"/api/exam/create-exam",
"/api/exam/join-exam",
"/api/exam/join-exam-wallet",
"/api/exam/start-exam",
"/api/exam/submit-solution",
"/api/exam/leaderboard/<exam_code>",
"/api/exam/host-dashboard/<exam_code>"
],
"compiler_endpoints": [
"/api/compiler/languages",
"/api/compiler/execute",
"/api/compiler/execute-async",
"/api/compiler/status/<execution_id>",
"/api/compiler/test",
"/api/compiler/stats"
]
})
# Error handlers
@app.errorhandler(404)
def not_found(error):
return jsonify({
"error": "Endpoint not found",
"message": "The requested API endpoint does not exist",
"available_endpoints": [
"/api/auth", "/api/courses", "/api/admin",
"/api/exam", "/api/dashboard", "/api/certificate",
"/api/compiler"
],
"debug_endpoints": [
"/debug/routes",
"/debug/exam-routes",
"/debug/services"
]
}), 404
@app.errorhandler(500)
def internal_error(error):
app.logger.error(f"Internal server error: {str(error)}")
return jsonify({
"error": "Internal server error",
"message": "An unexpected error occurred on the server"
}), 500
@app.errorhandler(403)
def forbidden(error):
return jsonify({
"error": "Forbidden",
"message": "Access denied - check your authentication"
}), 403
@app.errorhandler(401)
def unauthorized(error):
return jsonify({
"error": "Unauthorized",
"message": "Authentication required"
}), 401
@app.errorhandler(Exception)
def handle_error(error):
app.logger.error(f"Unhandled error: {str(error)}")
return jsonify({
"error": "An unexpected error occurred",
"type": type(error).__name__
}), 500
# Request logging and CORS handling
@app.before_request
def log_request_info():
"""Enhanced request logging"""
if '/api/admin' in request.path:
auth_header = request.headers.get('Authorization', 'No auth header')
logger.info(f"Admin request: {request.method} {request.path} | Auth: {auth_header[:20]}...")
if '/api/exam' in request.path:
logger.info(f"Exam request: {request.method} {request.path}")
print(f"📝 Exam request: {request.method} {request.path}")
if '/api/compiler' in request.path:
logger.info(f"Compiler request: {request.method} {request.path}")
@app.before_request
def handle_preflight():
"""Handle CORS preflight requests"""
if request.method == "OPTIONS":
response = jsonify({'status': 'ok'})
response.headers.add("Access-Control-Allow-Origin", "*")
response.headers.add('Access-Control-Allow-Headers', "Content-Type,Authorization")
response.headers.add('Access-Control-Allow-Methods', "GET,POST,PUT,DELETE,OPTIONS")
response.headers.add('Access-Control-Allow-Credentials', 'true')
return response
@app.after_request
def after_request(response):
"""Add security headers"""
response.headers.add('X-Content-Type-Options', 'nosniff')
response.headers.add('X-Frame-Options', 'DENY')
response.headers.add('X-XSS-Protection', '1; mode=block')
return response
# Startup function
def initialize_application():
"""Initialize application with comprehensive error handling"""
try:
logger.info("🚀 Initializing OpenLearnX Backend...")
print("🚀 Initializing OpenLearnX Backend...")
# Test MongoDB connection
if MONGO_SERVICE_AVAILABLE:
try:
loop = asyncio.get_event_loop()
loop.run_until_complete(mongo_service.init_db())
logger.info("✅ Database initialized successfully")
print("✅ Database initialized successfully")
from pymongo import MongoClient
client = MongoClient(app.config['MONGODB_URI'])
client.admin.command('ismaster')
logger.info("✅ MongoDB connection verified")
print("✅ MongoDB connection verified")
except Exception as e:
logger.error(f"❌ MongoDB initialization failed: {e}")
print(f"❌ MongoDB initialization failed: {e}")
# Test Web3 connection
if WEB3_SERVICE_AVAILABLE:
try:
if web3_service.w3.is_connected():
logger.info("✅ Web3 connection verified")
print("✅ Web3 connection verified")
else:
logger.warning("⚠️ Web3 connection failed - blockchain features disabled")
print("⚠️ Web3 connection failed - blockchain features disabled")
except Exception as e:
logger.warning(f"⚠️ Web3 connection error: {e}")
print(f"⚠️ Web3 connection error: {e}")
# Test Docker connection for compiler
if COMPILER_SERVICE_AVAILABLE:
try:
docker_available = check_docker_availability()
if docker_available:
logger.info("✅ Docker connection verified - Real compiler available")
print("✅ Docker connection verified - Real compiler available")
else:
logger.warning("⚠️ Docker not available - Compiler features limited")
print("⚠️ Docker not available - Compiler features limited")
except Exception as e:
logger.warning(f"⚠️ Docker connection error: {e}")
print(f"⚠️ Docker connection error: {e}")
# Log configuration
logger.info("📋 Configuration Summary:")
print("📋 Configuration Summary:")
config_items = [
("MongoDB", MONGO_SERVICE_AVAILABLE),
("Blockchain", WEB3_SERVICE_AVAILABLE),
("Wallet Service", WALLET_SERVICE_AVAILABLE),
("Compiler Service", COMPILER_SERVICE_AVAILABLE),
("Docker", check_docker_availability())
]
for name, available in config_items:
status = "✅ Connected" if available else "❌ Unavailable"
logger.info(f" • {name}: {status}")
print(f" • {name}: {status}")
# Log access URLs
logger.info("🌐 Access URLs:")
print("🌐 Access URLs:")
urls = [
("API Health", "http://127.0.0.1:5000/api/health"),
("Admin Panel", "http://localhost:3000/admin/login"),
("Coding Exams", "http://localhost:3000/coding"),
("Real Compiler", "http://localhost:3000/compiler"),
("Join Exam", "http://localhost:3000/coding/join"),
("Wallet Join", "http://localhost:3000/coding/join-wallet")
]
for name, url in urls:
logger.info(f" • {name}: {url}")
print(f" • {name}: {url}")
# Debug URLs
print("🔧 Debug URLs:")
debug_urls = [
("All Routes", "http://127.0.0.1:5000/debug/routes"),
("Exam Routes", "http://127.0.0.1:5000/debug/exam-routes"),
("Services", "http://127.0.0.1:5000/debug/services"),
("Direct Test", "http://127.0.0.1:5000/api/exam/test-direct")
]
for name, url in debug_urls:
print(f" • {name}: {url}")
# Log compiler features
if COMPILER_SERVICE_AVAILABLE:
logger.info("💻 Compiler Features:")
print("💻 Compiler Features:")
features = [
"Multi-language support: Python, Java, C++, C, JavaScript, Go, Rust, Bash",
"Real-time code execution with output capture",
"Secure Docker containerization",
"Resource monitoring and limits"
]
for feature in features:
logger.info(f" • {feature}")
print(f" • {feature}")
# Log admin token (partially masked)
admin_token = app.config.get('ADMIN_TOKEN', 'admin-secret-key')
if admin_token:
logger.info(f"🔑 Admin token configured: {admin_token[:8]}...")
print(f"🔑 Admin token configured: {admin_token[:8]}...")
return True
except Exception as e:
logger.error(f"❌ Failed to initialize application: {str(e)}")
print(f"❌ Failed to initialize application: {str(e)}")
logger.error("Make sure MongoDB and Docker are running and accessible")
print("Make sure MongoDB and Docker are running and accessible")
return False
if __name__ == '__main__':
# Initialize application
init_success = initialize_application()
if not init_success:
logger.error("❌ Application initialization failed - some features may not work")
print("❌ Application initialization failed - some features may not work")
try:
logger.info("🚀 Starting OpenLearnX Backend Server...")
print("🚀 Starting OpenLearnX Backend Server...")
logger.info("📚 Features: Blockchain Certificates, Coding Exams, Wallet Auth, Real Multi-language Compiler")
print("📚 Features: Blockchain Certificates, Coding Exams, Wallet Auth, Real Multi-language Compiler")
# Start Flask application
app.run(
debug=True,
host='0.0.0.0',
port=5000,
threaded=True,
use_reloader=False
)
except KeyboardInterrupt:
logger.info("👋 Server stopped by user")
print("👋 Server stopped by user")
except Exception as e:
logger.error(f"❌ Server startup failed: {str(e)}")
print(f"❌ Server startup failed: {str(e)}")
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