from nicegui import ui
from services.auth_service import AuthService

class LoginPage:
    def __init__(self, auth_service: AuthService):
        self.auth_service = auth_service
        
    def render(self):
        """Render login page"""
        with ui.column().classes('min-h-screen bg-gradient-to-br from-green-400 to-green-600 justify-center items-center'):
            with ui.card().classes('w-full max-w-md p-8 shadow-2xl'):
                ui.label('Simple Mensa Admin').classes('text-2xl font-bold text-center text-gray-800 mb-6')
                
                with ui.column().classes('space-y-4 w-full'):
                    username_input = ui.input('Username', placeholder='Inserisci username').classes('w-full')
                    password_input = ui.input('Password', placeholder='Inserisci password', password=True).classes('w-full')
                    
                    login_btn = ui.button('Accedi', on_click=lambda: self._handle_login(username_input.value, password_input.value)).classes('w-full bg-green-600 hover:bg-green-700')
                    
                ui.label('Demo: admin / admin').classes('text-sm text-gray-500 text-center mt-4')
    
    def _handle_login(self, username: str, password: str):
        """Handle login attempt"""
        if not username or not password:
            ui.notify('Inserisci username e password', type='negative')
            return
            
        if self.auth_service.login(username, password):
            ui.notify('Login effettuato con successo', type='positive')
            ui.navigate.to('/')
        else:
            ui.notify('Credenziali non valide', type='negative')