from datetime import date, timedelta
from flask import current_app
from models import TempSpec
from utils import send_email, process_recipients
def check_expiring_specs(app):
"""Scheduled task: notify when specs will expire in 3 or 7 days."""
with app.app_context():
current_app.logger.info("Running scheduled task: Checking for expiring specs...")
today = date.today()
targets = {3, 7}
expiring_soon = TempSpec.query.filter(
TempSpec.status == "active"
).all()
if not expiring_soon:
current_app.logger.info("No active specs found for expiry check.")
return
configured_defaults = app.config.get("DEFAULT_NOTIFICATION_EMAILS", "")
default_recipients = process_recipients(configured_defaults) if configured_defaults else []
for spec in expiring_soon:
if not spec.end_date:
continue
remaining_days = (spec.end_date - today).days
if remaining_days not in targets:
continue
recipients_source = spec.notification_emails or configured_defaults
recipients = process_recipients(recipients_source) if recipients_source else default_recipients
if not recipients:
current_app.logger.warning(
"Skip expiry reminder for %s - no recipients.", spec.spec_code
)
continue
subject = f"[TempSpec Reminder] '{spec.spec_code}' expires in {remaining_days} day(s)"
body = f"""
Hello,
This is an automated reminder.
Temp spec {spec.spec_code} - {spec.title} will expire on {spec.end_date.strftime('%Y-%m-%d')}.
Days remaining: {remaining_days}
Applicant: {spec.applicant}
Please sign in to the system if an extension is required.
This message was sent automatically. Please do not reply.
"""
send_email(recipients, subject, body)
current_app.logger.info(
"Sent expiry reminder for spec %s to %d recipients.",
spec.spec_code,
len(recipients),
)