""" Email Service for pounce.ch Sends transactional emails using SMTP. Email Types: - Domain availability alerts - Price change notifications - Subscription confirmations - Password reset - Weekly digests Environment Variables Required: - SMTP_HOST: SMTP server hostname - SMTP_PORT: SMTP port (usually 587 for TLS, 465 for SSL) - SMTP_USER: SMTP username - SMTP_PASSWORD: SMTP password - SMTP_FROM_EMAIL: Sender email address - SMTP_FROM_NAME: Sender name (default: pounce) """ import logging import os import asyncio from typing import Optional, List, Dict, Any from email.mime.text import MIMEText from email.mime.multipart import MIMEMultipart from datetime import datetime import aiosmtplib from jinja2 import Template logger = logging.getLogger(__name__) # SMTP Configuration from environment SMTP_CONFIG = { "host": os.getenv("SMTP_HOST"), "port": int(os.getenv("SMTP_PORT", "587")), "username": os.getenv("SMTP_USER"), "password": os.getenv("SMTP_PASSWORD"), "from_email": os.getenv("SMTP_FROM_EMAIL", "noreply@pounce.ch"), "from_name": os.getenv("SMTP_FROM_NAME", "pounce"), "use_tls": os.getenv("SMTP_USE_TLS", "true").lower() == "true", } # Email Templates TEMPLATES = { "domain_available": """

🐆 pounce

Domain Available!

Great news! A domain you're monitoring is now available for registration:

This domain was previously registered but has now expired or been deleted. Act fast before someone else registers it!

""", "price_alert": """

🐆 pounce

Price Alert: .{{ tld }}

{% if change_percent < 0 %} ↓ Price dropped {{ change_percent|abs }}% {% else %} ↑ Price increased {{ change_percent }}% {% endif %}

Old price: ${{ old_price }}
New price: ${{ new_price }}
Cheapest registrar: {{ registrar }}

View Details →

""", "subscription_confirmed": """

🐆 pounce

Welcome to {{ plan_name }}!

Your subscription is now active. Here's what you can do:

{{ feature }}

Go to Dashboard →

""", "weekly_digest": """

🐆 pounce

Your Weekly Digest

Here's what happened with your monitored domains this week:

Domains Monitored {{ total_domains }}

Status Changes {{ status_changes }}

Price Alerts {{ price_alerts }}

{% if available_domains %}

Domains Now Available

{% for domain in available_domains %}

{% endfor %} {% endif %} View Dashboard →

""", } class EmailService: """ Async email service using SMTP. All emails use HTML templates with the pounce branding. """ @staticmethod def is_configured() -> bool: """Check if SMTP is properly configured.""" return bool( SMTP_CONFIG["host"] and SMTP_CONFIG["username"] and SMTP_CONFIG["password"] ) @staticmethod async def send_email( to_email: str, subject: str, html_content: str, text_content: Optional[str] = None, ) -> bool: """ Send an email via SMTP. Args: to_email: Recipient email address subject: Email subject html_content: HTML body text_content: Plain text body (optional, for email clients that don't support HTML) Returns: True if sent successfully, False otherwise """ if not EmailService.is_configured(): logger.warning(f"SMTP not configured. Would send to {to_email}: {subject}") return False try: # Create message msg = MIMEMultipart("alternative") msg["Subject"] = subject msg["From"] = f"{SMTP_CONFIG['from_name']} <{SMTP_CONFIG['from_email']}>" msg["To"] = to_email # Add text part (fallback) if text_content: msg.attach(MIMEText(text_content, "plain")) # Add HTML part msg.attach(MIMEText(html_content, "html")) # Send via SMTP async with aiosmtplib.SMTP( hostname=SMTP_CONFIG["host"], port=SMTP_CONFIG["port"], use_tls=SMTP_CONFIG["use_tls"], ) as smtp: await smtp.login(SMTP_CONFIG["username"], SMTP_CONFIG["password"]) await smtp.send_message(msg) logger.info(f"Email sent to {to_email}: {subject}") return True except Exception as e: logger.error(f"Failed to send email to {to_email}: {e}") return False @staticmethod async def send_domain_available( to_email: str, domain: str, register_url: Optional[str] = None, ) -> bool: """Send domain available notification.""" if not register_url: register_url = f"https://pounce.ch/dashboard" template = Template(TEMPLATES["domain_available"]) html = template.render( domain=domain, register_url=register_url, year=datetime.utcnow().year, ) return await EmailService.send_email( to_email=to_email, subject=f"🎉 Domain Available: {domain}", html_content=html, text_content=f"Great news! {domain} is now available for registration. Visit {register_url} to register.", ) @staticmethod async def send_price_alert( to_email: str, tld: str, old_price: float, new_price: float, registrar: str, ) -> bool: """Send TLD price change alert.""" change_percent = round(((new_price - old_price) / old_price) * 100, 1) template = Template(TEMPLATES["price_alert"]) html = template.render( tld=tld, old_price=f"{old_price:.2f}", new_price=f"{new_price:.2f}", change_percent=change_percent, registrar=registrar, tld_url=f"https://pounce.ch/tld-pricing/{tld}", year=datetime.utcnow().year, ) direction = "dropped" if change_percent < 0 else "increased" return await EmailService.send_email( to_email=to_email, subject=f"📊 Price Alert: .{tld} {direction} {abs(change_percent)}%", html_content=html, text_content=f".{tld} price {direction} from ${old_price:.2f} to ${new_price:.2f} at {registrar}.", ) @staticmethod async def send_subscription_confirmed( to_email: str, plan_name: str, features: List[str], ) -> bool: """Send subscription confirmation email.""" template = Template(TEMPLATES["subscription_confirmed"]) html = template.render( plan_name=plan_name, features=features, dashboard_url="https://pounce.ch/dashboard", year=datetime.utcnow().year, ) return await EmailService.send_email( to_email=to_email, subject=f"✅ Welcome to pounce {plan_name}!", html_content=html, text_content=f"Your {plan_name} subscription is now active. Visit https://pounce.ch/dashboard to get started.", ) @staticmethod async def send_weekly_digest( to_email: str, total_domains: int, status_changes: int, price_alerts: int, available_domains: List[str], ) -> bool: """Send weekly summary digest.""" template = Template(TEMPLATES["weekly_digest"]) html = template.render( total_domains=total_domains, status_changes=status_changes, price_alerts=price_alerts, available_domains=available_domains, dashboard_url="https://pounce.ch/dashboard", year=datetime.utcnow().year, ) return await EmailService.send_email( to_email=to_email, subject=f"📬 Your pounce Weekly Digest", html_content=html, text_content=f"This week: {total_domains} domains monitored, {status_changes} status changes, {price_alerts} price alerts.", ) # Global instance email_service = EmailService()