from django.core.mail import EmailMultiAlternatives
from django.template.loader import render_to_string
from django.conf import settings

class EmailService:
    
    @staticmethod
    def send_admin_notification(appointment):
        subject = f"New Appointment Request from {appointment.full_name}"
        
        context = {
            'appointment': appointment,
            'preferred_dates': appointment.get_preferred_dates_display(),
            'preferred_times': appointment.get_preferred_time_slots_display(),
            'admin_dashboard_url': f"{settings.FRONTEND_URL}/admin/appointments" if hasattr(settings, 'FRONTEND_URL') else '/admin/'
        }
        
        html_message = render_to_string('emails/admin_notification.html', context)
        
        admin_email = getattr(settings, 'ADMIN_EMAIL', 'hello@attunehearttherapy.com')
        
        try:
            email = EmailMultiAlternatives(
                subject=subject,
                body="Please view this email in an HTML-compatible client.",  # Fallback text
                from_email=settings.DEFAULT_FROM_EMAIL,
                to=[admin_email],
            )
            email.attach_alternative(html_message, "text/html")
            email.send(fail_silently=False)
            return True
        except Exception as e:
            print(f"Failed to send admin notification: {e}")
            return False
    
    @staticmethod
    def send_appointment_scheduled(appointment):
        subject = "Your Appointment Has Been Scheduled"
        
        context = {
            'appointment': appointment,
            'scheduled_datetime': appointment.formatted_scheduled_datetime,
            'user_dashboard_url': f"{settings.FRONTEND_URL}/dashboard" if hasattr(settings, 'FRONTEND_URL') else '/dashboard/'
        }
        
        html_message = render_to_string('emails/appointment_scheduled.html', context)
        
        try:
            email = EmailMultiAlternatives(
                subject=subject,
                body="Please view this email in an HTML-compatible client.",  # Fallback text
                from_email=settings.DEFAULT_FROM_EMAIL,
                to=[appointment.email],
            )
            email.attach_alternative(html_message, "text/html")
            email.send(fail_silently=False)
            return True
        except Exception as e:
            print(f"Failed to send scheduled notification: {e}")
            return False
    
    @staticmethod
    def send_appointment_rejected(appointment):
        subject = "Update on Your Appointment Request"
        
        context = {
            'appointment': appointment,
            'rejection_reason': appointment.rejection_reason or "No specific reason provided.",
            'user_dashboard_url': f"{settings.FRONTEND_URL}/dashboard" if hasattr(settings, 'FRONTEND_URL') else '/dashboard/'
        }
        
        html_message = render_to_string('emails/appointment_rejected.html', context)
        
        try:
            email = EmailMultiAlternatives(
                subject=subject,
                body="Please view this email in an HTML-compatible client.",  # Fallback text
                from_email=settings.DEFAULT_FROM_EMAIL,
                to=[appointment.email],
            )
            email.attach_alternative(html_message, "text/html")
            email.send(fail_silently=False)
            return True
        except Exception as e:
            print(f"Failed to send rejection notification: {e}")
            return False