import os
import sys
import importlib.util
from flask import Flask, render_template
from app import create_app

# Add the current directory to Python path
current_dir = os.path.abspath(os.path.dirname(__file__))
sys.path.insert(0, current_dir)

def create_basic_app():
    """Create a Flask app without database dependencies"""
    app = Flask(__name__, 
                template_folder=os.path.join(current_dir, 'app', 'templates'),
                static_folder=os.path.join(current_dir, 'app', 'static'))
    
    # Basic configuration
    app.config['SECRET_KEY'] = os.environ.get('SECRET_KEY', 'dev-key-placeholder')
    app.config['DEBUG'] = True
    
    # Register basic routes
    register_routes(app)
    
    # Add a fallback index route if no routes match
    @app.route('/')
    def index():
        return "Your Network Management Flask Application is running! Navigate to /dashboard to see content."
    
    return app

def register_routes(app):
    """Register blueprints without database dependencies"""
    routes_dir = os.path.join(current_dir, 'app', 'routes')
    
    # Check if routes directory exists
    if not os.path.isdir(routes_dir):
        print(f"Warning: Routes directory {routes_dir} not found")
        return
    
    # Try to register API blueprint which is simplest
    try:
        from app.routes.api import bp as api_bp
        app.register_blueprint(api_bp)
        print("Registered API blueprint")
    except Exception as e:
        print(f"Could not register API blueprint: {e}")
    
    # Try to register other blueprints with basic error handling
    try:
        from app.routes.dashboard import bp as dashboard_bp
        app.register_blueprint(dashboard_bp)
        print("Registered dashboard blueprint")
    except ImportError as e:
        print(f"Could not import dashboard blueprint: {e}")
    
    try:
        from app.routes.ipam import bp as ipam_bp
        app.register_blueprint(ipam_bp)
        print("Registered IPAM blueprint")
    except ImportError as e:
        print(f"Could not import IPAM blueprint: {e}")

if __name__ == '__main__':
    try:
        print("Starting Flask app with SQLite database...")
        app = create_app('development')
        app.run(debug=True, host='0.0.0.0', port=5000)
    except Exception as e:
        print(f"Error starting Flask app: {e}")
        import traceback
        traceback.print_exc()