Create sendgrid_service.py

src/sendgrid_service.py

@@ -0,0 +1,110 @@
+import os
+import base64
+import logging
+import requests
+
+# Configure logging
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger(__name__)
+
+class SendGridService:
+    def __init__(self):
+        self.api_key = os.getenv('SENDGRID_API_KEY')
+        self.from_email = os.getenv('SENDGRID_FROM_EMAIL', '[email protected]')
+        
+        if not self.api_key:
+            logger.warning("SendGrid API key not found in environment variables")
+            
+    def send_report(self, to_email, pdf_data, patient_name):
+        """
+        Send medical report via SendGrid's API
+        
+        Args:
+            to_email (str): Recipient's email address
+            pdf_data (bytes): The PDF report as bytes
+            patient_name (str): Name of the patient
+            
+        Returns:
+            tuple[bool, str]: (success status, message)
+        """
+        try:
+            # Check if API key is configured
+            if not self.api_key:
+                return False, "Email service not configured. Please contact support."
+                
+            # Encode PDF data as base64
+            pdf_base64 = base64.b64encode(pdf_data).decode('utf-8')
+            
+            # Prepare email data
+            email_data = {
+                "personalizations": [
+                    {
+                        "to": [{"email": to_email}],
+                        "subject": f"Medical Report - {patient_name}"
+                    }
+                ],
+                "from": {"email": self.from_email},
+                "content": [
+                    {
+                        "type": "text/plain",
+                        "value": f"""Dear {patient_name},
+
+Please find attached your medical report from your recent consultation.
+
+Note: This report is for informational purposes only and should not be considered as a substitute for professional medical advice.
+
+Best regards,
+Daease Medical Team
+"""
+                    }
+                ],
+                "attachments": [
+                    {
+                        "content": pdf_base64,
+                        "type": "application/pdf",
+                        "filename": f"medical_report_{patient_name.replace(' ', '_')}.pdf",
+                        "disposition": "attachment"
+                    }
+                ]
+            }
+            
+            # Send request to SendGrid API
+            response = requests.post(
+                "https://api.sendgrid.com/v3/mail/send",
+                headers={
+                    "Authorization": f"Bearer {self.api_key}",
+                    "Content-Type": "application/json"
+                },
+                json=email_data
+            )
+            
+            # Process response
+            if response.status_code == 202:  # SendGrid returns 202 when successful
+                logger.info(f"Successfully sent report to {to_email}")
+                return True, "Report sent successfully!"
+            else:
+                logger.error(f"SendGrid API error: Status {response.status_code}, Body: {response.text}")
+                return False, f"Failed to send email (Error {response.status_code})"
+                
+        except requests.exceptions.RequestException as e:
+            logger.error(f"Request error: {str(e)}")
+            return False, f"Connection error: {str(e)}"
+            
+        except Exception as e:
+            logger.error(f"Unexpected error: {str(e)}")
+            return False, "An unexpected error occurred. Please try again later."
+    
+    @staticmethod
+    def validate_email(email):
+        """
+        Basic email validation
+        
+        Args:
+            email (str): Email address to validate
+            
+        Returns:
+            bool: True if valid email format
+        """
+        import re
+        pattern = r'^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$'
+        return bool(re.match(pattern, email))