from flask import Flask
from models import db
from flask_migrate import Migrate
from routes.userRoutes import userRoutes
from routes.eventRoutes import eventRoutes
import config
from flask_jwt_extended import JWTManager
from middlewares.errorHandlers import handle_auth_error, handle_invalid_token
from flask_jwt_extended.exceptions import NoAuthorizationError
from jwt.exceptions import InvalidTokenError
from datetime import timedelta
from flask_apscheduler import APScheduler
from services.EventNotifyerService import EventNotifyerService

class App:
    def __init__(self):
        self.app = Flask(__name__)
        self.set_config()
        self.set_up_db()
        self.set_up_jwt()
        self.register_blueprints()
        self.setup_error_handlers()
        self.scheduler = APScheduler()

    def setup_scheduler(self):
        self.app.config.from_object(self.SchadulerConfig())
        self.scheduler.init_app(self.app)
        self.scheduler.start()
        # Schedule the job
        self.scheduler.add_job(id='notifyUpcommingEvents', func=self.notifyUpcommingEvents, trigger='interval', minutes=5)
        print("Scheduler started")


    def set_config(self):
        self.app.config.from_object(config.Config)

    def set_up_db(self):
        db.init_app(self.app)
        self.migrate = Migrate(self.app, db)

    def setup_error_handlers(self):
        self.app.register_error_handler(NoAuthorizationError, handle_auth_error)
        self.app.register_error_handler(InvalidTokenError, handle_invalid_token)

    def set_up_jwt(self):
        self.jwt_manager = JWTManager(self.app)
        self.app.config['JWT_TOKEN_LOCATION'] = ['cookies']
        self.app.config['JWT_COOKIE_NAME'] = 'access_token_cookie'
        self.app.config['JWT_COOKIE_CSRF_PROTECT'] = False
        self.app.config['JWT_ACCESS_TOKEN_EXPIRES'] = timedelta(days=30)

    def register_blueprints(self):
        self.app.register_blueprint(userRoutes, url_prefix='/user')
        self.app.register_blueprint(eventRoutes, url_prefix='/event')

    def print_endpoints(self):
        print("Endpoints and their functions:")
        for rule in self.app.url_map.iter_rules():
            print(f"Endpoint: {rule.endpoint}, Path: {rule}")
            function_name = self.app.view_functions[rule.endpoint].__name__
            print(f"   Function: {function_name}")


    def SchadulerConfig(object):
        SCHEDULER_API_ENABLED = True

    def notifyUpcommingEvents(self):
        with self.app.app_context():
            EventNotifyerService.notifyUpcommingEvents()
    
    def run(self):
        with self.app.app_context():
            db.create_all()
            self.setup_scheduler() # Setup scheduler
        self.app.run(port=8000, debug=True)

app_class_instance = App()
app_instance = app_class_instance.app

if __name__ == '__main__':
    app_class_instance.print_endpoints()
    app_class_instance.run()