421 lines
13 KiB
Python
421 lines
13 KiB
Python
"""
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Norda Biznes - Email Service
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=============================
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Sends emails via Microsoft Graph API using Application permissions.
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Based on mtbtracker implementation.
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Author: Norda Biznes Development Team
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Created: 2025-12-25
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"""
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import os
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import logging
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from typing import Optional, List
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from dotenv import load_dotenv
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# Load .env file for environment variables
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load_dotenv()
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logger = logging.getLogger(__name__)
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# Check if msal is available
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try:
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import msal
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import requests
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MSAL_AVAILABLE = True
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except ImportError:
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MSAL_AVAILABLE = False
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logger.warning("msal package not installed. Email service will be disabled.")
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class EmailService:
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"""Service for sending emails via Microsoft Graph API"""
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def __init__(self, tenant_id: str, client_id: str, client_secret: str, mail_from: str):
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"""
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Initialize Email Service
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Args:
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tenant_id: Azure AD Tenant ID
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client_id: Application (client) ID
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client_secret: Client secret value
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mail_from: Default sender email address (e.g., noreply@inpi.pl)
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"""
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self.tenant_id = tenant_id
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self.client_id = client_id
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self.client_secret = client_secret
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self.mail_from = mail_from
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self.authority = f"https://login.microsoftonline.com/{tenant_id}"
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self.scope = ["https://graph.microsoft.com/.default"]
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self.graph_endpoint = "https://graph.microsoft.com/v1.0"
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def _get_access_token(self) -> Optional[str]:
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"""
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Acquire access token using client credentials flow
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Returns:
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Access token string or None if failed
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"""
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if not MSAL_AVAILABLE:
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logger.error("msal package not available")
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return None
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try:
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app = msal.ConfidentialClientApplication(
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self.client_id,
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authority=self.authority,
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client_credential=self.client_secret,
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)
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result = app.acquire_token_silent(self.scope, account=None)
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if not result:
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logger.info("No token in cache, acquiring new token")
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result = app.acquire_token_for_client(scopes=self.scope)
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if "access_token" in result:
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return result["access_token"]
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else:
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logger.error(f"Failed to acquire token: {result.get('error')}: {result.get('error_description')}")
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return None
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except Exception as e:
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logger.error(f"Exception during token acquisition: {e}", exc_info=True)
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return None
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def send_mail(
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self,
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to: List[str],
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subject: str,
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body_text: str,
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body_html: Optional[str] = None,
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from_address: Optional[str] = None
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) -> bool:
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"""
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Send email via Microsoft Graph API
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Args:
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to: List of recipient email addresses
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subject: Email subject
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body_text: Plain text email body
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body_html: HTML email body (optional)
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from_address: Sender email (optional, defaults to configured mail_from)
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Returns:
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True if sent successfully, False otherwise
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"""
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if not MSAL_AVAILABLE:
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logger.error("msal package not available - cannot send email")
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return False
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try:
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# Get access token
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token = self._get_access_token()
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if not token:
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logger.error("Failed to acquire access token")
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return False
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# Use default sender if not specified
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sender = from_address or self.mail_from
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# Prepare recipients
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recipients = [{"emailAddress": {"address": email}} for email in to]
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# Prepare message body
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if body_html:
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content_type = "HTML"
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content = body_html
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else:
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content_type = "Text"
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content = body_text
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# Build email message
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email_msg = {
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"message": {
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"subject": subject,
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"body": {
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"contentType": content_type,
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"content": content
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},
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"toRecipients": recipients,
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"from": {
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"emailAddress": {
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"address": sender
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}
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}
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},
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"saveToSentItems": "false"
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}
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# Send email via Graph API
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url = f"{self.graph_endpoint}/users/{sender}/sendMail"
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headers = {
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"Authorization": f"Bearer {token}",
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"Content-Type": "application/json"
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}
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response = requests.post(url, headers=headers, json=email_msg, timeout=30)
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if response.status_code == 202:
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logger.info(f"Email sent successfully to {to}")
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return True
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else:
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logger.error(f"Failed to send email. Status: {response.status_code}, Response: {response.text}")
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return False
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except Exception as e:
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logger.error(f"Exception during email sending: {e}", exc_info=True)
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return False
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# Global service instance
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_email_service: Optional[EmailService] = None
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def init_email_service():
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"""
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Initialize the global Email Service instance from environment variables
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Required env vars:
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AZURE_TENANT_ID: Azure AD Tenant ID
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AZURE_CLIENT_ID: Application (client) ID
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AZURE_CLIENT_SECRET: Client secret value
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MAIL_FROM: Default sender email address
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"""
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global _email_service
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tenant_id = os.getenv('AZURE_TENANT_ID')
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client_id = os.getenv('AZURE_CLIENT_ID')
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client_secret = os.getenv('AZURE_CLIENT_SECRET')
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mail_from = os.getenv('MAIL_FROM', 'noreply@inpi.pl')
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if tenant_id and client_id and client_secret:
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_email_service = EmailService(tenant_id, client_id, client_secret, mail_from)
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logger.info(f"Email Service initialized with sender: {mail_from}")
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return True
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else:
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logger.warning("Email Service not configured - missing Azure credentials")
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return False
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def send_email(
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to: List[str],
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subject: str,
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body_text: str,
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body_html: Optional[str] = None,
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from_address: Optional[str] = None
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) -> bool:
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"""
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Send email using the global Email Service instance
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Args:
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to: List of recipient email addresses (can be single email as list)
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subject: Email subject
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body_text: Plain text email body
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body_html: HTML email body (optional)
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from_address: Sender email (optional)
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Returns:
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True if sent successfully, False otherwise
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"""
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if not _email_service:
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logger.error("Email Service not initialized. Call init_email_service() first.")
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return False
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# Convert single email to list if needed
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if isinstance(to, str):
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to = [to]
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return _email_service.send_mail(to, subject, body_text, body_html, from_address)
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def is_configured() -> bool:
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"""
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Check if Email Service is configured and ready
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Returns:
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True if service is initialized, False otherwise
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"""
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return _email_service is not None
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# Auto-initialize on module load
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init_email_service()
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# ============================================================
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# EMAIL TEMPLATES
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# ============================================================
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def send_password_reset_email(email: str, reset_url: str) -> bool:
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"""
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Send password reset email
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Args:
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email: Recipient email address
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reset_url: Password reset URL with token
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Returns:
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True if sent successfully, False otherwise
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"""
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subject = "Reset hasla - Norda Biznes Hub"
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body_text = f"""Otrzymales ten email, poniewaz zazadano resetowania hasla dla Twojego konta Norda Biznes Hub.
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Aby zresetowac haslo, kliknij w ponizszy link:
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{reset_url}
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Link bedzie wazny przez 1 godzine.
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Jesli nie zazadales resetowania hasla, zignoruj ten email.
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---
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Norda Biznes Hub - Katalog Firm Czlonkowskich
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https://nordabiznes.pl
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"""
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body_html = f"""
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<!DOCTYPE html>
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<html>
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<head>
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<style>
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body {{ font-family: 'Inter', Arial, sans-serif; line-height: 1.6; color: #1e293b; }}
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.container {{ max-width: 600px; margin: 0 auto; padding: 20px; background: #f8fafc; }}
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.header {{ background: linear-gradient(135deg, #2563eb, #1e40af); color: white; padding: 30px; text-align: center; border-radius: 8px 8px 0 0; }}
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.content {{ background: white; padding: 30px; border-radius: 0 0 8px 8px; }}
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.button {{ display: inline-block; padding: 14px 32px; background: #2563eb; color: white; text-decoration: none; border-radius: 8px; margin: 20px 0; font-weight: 600; }}
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.button:hover {{ background: #1e40af; }}
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.footer {{ text-align: center; padding: 20px; color: #64748b; font-size: 0.9em; }}
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.warning {{ background: #fef3c7; border-left: 4px solid #f59e0b; padding: 15px; margin: 20px 0; border-radius: 0 8px 8px 0; }}
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</style>
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</head>
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<body>
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<div class="container">
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<div class="header">
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<h1>Reset hasla</h1>
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</div>
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<div class="content">
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<p>Otrzymales ten email, poniewaz zazadano resetowania hasla dla Twojego konta Norda Biznes Hub.</p>
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<p>Aby zresetowac haslo, kliknij w ponizszy przycisk:</p>
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<center>
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<a href="{reset_url}" class="button">Zresetuj haslo</a>
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</center>
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<div class="warning">
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<strong>Waznosc linku:</strong> 1 godzina
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</div>
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<p>Jesli przycisk nie dziala, skopiuj i wklej ponizszy link do przegladarki:</p>
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<p style="word-break: break-all; color: #2563eb;">{reset_url}</p>
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<p style="margin-top: 30px; color: #64748b; font-size: 0.9em;">
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<strong>Nie zazadales resetowania hasla?</strong><br>
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Zignoruj ten email. Twoje haslo pozostanie bez zmian.
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</p>
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</div>
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<div class="footer">
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<p><strong>Norda Biznes Hub</strong> - Katalog Firm Czlonkowskich</p>
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<p><a href="https://nordabiznes.pl">nordabiznes.pl</a></p>
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</div>
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</div>
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</body>
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</html>
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"""
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return send_email([email], subject, body_text, body_html)
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def send_welcome_email(email: str, name: str, verification_url: str) -> bool:
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"""
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Send welcome/verification email after registration
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Args:
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email: Recipient email address
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name: User's name
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verification_url: Email verification URL with token
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Returns:
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True if sent successfully, False otherwise
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"""
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subject = "Witamy w Norda Biznes Hub - Potwierdz email"
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body_text = f"""Witaj {name}!
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Dziekujemy za rejestracje w Norda Biznes Hub - platformie sieciowej dla czlonkow stowarzyszenia Norda Biznes.
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Aby aktywowac swoje konto, potwierdz adres email klikajac w ponizszy link:
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{verification_url}
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Link bedzie wazny przez 24 godziny.
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Po potwierdzeniu email bedziesz mogl:
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- Przegladac katalog 80 firm czlonkowskich
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- Korzystac z asystenta AI do wyszukiwania uslug
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- Nawiazywac kontakty biznesowe
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Pozdrawiamy,
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Zespol Norda Biznes Hub
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---
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Norda Biznes Hub - Katalog Firm Czlonkowskich
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https://nordabiznes.pl
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"""
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body_html = f"""
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<!DOCTYPE html>
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<html>
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<head>
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<style>
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body {{ font-family: 'Inter', Arial, sans-serif; line-height: 1.6; color: #1e293b; }}
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.container {{ max-width: 600px; margin: 0 auto; padding: 20px; background: #f8fafc; }}
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.header {{ background: linear-gradient(135deg, #2563eb, #1e40af); color: white; padding: 30px; text-align: center; border-radius: 8px 8px 0 0; }}
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.content {{ background: white; padding: 30px; border-radius: 0 0 8px 8px; }}
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.button {{ display: inline-block; padding: 14px 32px; background: #10b981; color: white; text-decoration: none; border-radius: 8px; margin: 20px 0; font-weight: 600; }}
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.footer {{ text-align: center; padding: 20px; color: #64748b; font-size: 0.9em; }}
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.features {{ background: #f0fdf4; padding: 20px; border-radius: 8px; margin: 20px 0; }}
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.features ul {{ margin: 10px 0; padding-left: 20px; }}
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</style>
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</head>
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<body>
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<div class="container">
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<div class="header">
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<h1>Witamy w Norda Biznes Hub!</h1>
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</div>
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<div class="content">
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<p>Witaj <strong>{name}</strong>!</p>
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<p>Dziekujemy za rejestracje w Norda Biznes Hub - platformie sieciowej dla czlonkow stowarzyszenia Norda Biznes.</p>
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<p>Aby aktywowac swoje konto, potwierdz adres email:</p>
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<center>
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<a href="{verification_url}" class="button">Potwierdz email</a>
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</center>
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<div class="features">
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<strong>Po potwierdzeniu email bedziesz mogl:</strong>
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<ul>
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<li>Przegladac katalog 80 firm czlonkowskich</li>
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<li>Korzystac z asystenta AI do wyszukiwania uslug</li>
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<li>Nawiazywac kontakty biznesowe</li>
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</ul>
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</div>
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<p style="color: #64748b; font-size: 0.9em;">
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Link bedzie wazny przez 24 godziny.
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</p>
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</div>
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<div class="footer">
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<p><strong>Norda Biznes Hub</strong> - Katalog Firm Czlonkowskich</p>
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<p><a href="https://nordabiznes.pl">nordabiznes.pl</a></p>
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</div>
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</div>
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</body>
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</html>
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"""
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return send_email([email], subject, body_text, body_html)
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