124 lines
4.5 KiB
Python
124 lines
4.5 KiB
Python
from celery import shared_task
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from celery.utils.log import get_task_logger
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from django.core.mail import send_mail
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from django.conf import settings
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from django.utils.http import urlsafe_base64_encode
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from django.utils.encoding import force_bytes
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from django.template.loader import render_to_string
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from .tokens import *
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from .models import CustomUser
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logger = get_task_logger(__name__)
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def send_email_with_context(recipients, subject, message=None, template_name=None, html_template_name=None, context=None):
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"""
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General function to send emails with a specific context.
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Supports rendering plain text and HTML templates.
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Converts `user` in context to a plain dict to avoid template access to the model.
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"""
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if isinstance(recipients, str):
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recipients = [recipients]
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html_message = None
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if template_name or html_template_name:
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# Best effort to resolve both templates if only one provided
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if not template_name and html_template_name:
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template_name = html_template_name.replace(".html", ".txt")
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if not html_template_name and template_name:
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html_template_name = template_name.replace(".txt", ".html")
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ctx = dict(context or {})
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# Sanitize user if someone passes the model by mistake
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if "user" in ctx and not isinstance(ctx["user"], dict):
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try:
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ctx["user"] = _build_user_template_ctx(ctx["user"])
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except Exception:
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ctx["user"] = {}
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message = render_to_string(template_name, ctx)
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html_message = render_to_string(html_template_name, ctx)
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try:
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send_mail(
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subject=subject,
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message=message or "",
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from_email=None,
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recipient_list=recipients,
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fail_silently=False,
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html_message=html_message,
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)
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if settings.EMAIL_BACKEND == 'django.core.mail.backends.console.EmailBackend':
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logger.debug(f"\nEMAIL OBSAH:\n{message}\nKONEC OBSAHU")
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return True
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except Exception as e:
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logger.error(f"E-mail se neodeslal: {e}")
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return False
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def _build_user_template_ctx(user: CustomUser) -> dict:
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"""
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Return a plain dict for templates instead of passing the DB model.
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Provides aliases to avoid template errors (firstname vs first_name).
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Adds a backward-compatible key 'get_full_name' for templates using `user.get_full_name`.
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"""
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first_name = getattr(user, "first_name", "") or ""
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last_name = getattr(user, "last_name", "") or ""
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full_name = f"{first_name} {last_name}".strip()
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return {
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"id": user.pk,
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"email": getattr(user, "email", "") or "",
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"first_name": first_name,
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"firstname": first_name, # alias for templates using `firstname`
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"last_name": last_name,
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"lastname": last_name, # alias for templates using `lastname`
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"full_name": full_name,
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"get_full_name": full_name, # compatibility for templates using method-style access
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}
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#----------------------------------------------------------------------------------------------------
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# This function sends an email to the user for email verification after registration.
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@shared_task
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def send_email_verification_task(user_id):
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try:
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user = CustomUser.objects.get(pk=user_id)
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except CustomUser.DoesNotExist:
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logger.info(f"Task send_email_verification has failed. Invalid User ID was sent.")
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return 0
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uid = urlsafe_base64_encode(force_bytes(user.pk))
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# {changed} generate and store a per-user token
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token = user.generate_email_verification_token()
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verify_url = f"{settings.FRONTEND_URL}/email-verification/?uidb64={uid}&token={token}"
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context = {
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"user": _build_user_template_ctx(user),
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"action_url": verify_url,
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"frontend_url": settings.FRONTEND_URL,
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"cta_label": "Ověřit e‑mail",
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}
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send_email_with_context(
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recipients=user.email,
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subject="Ověření e‑mailu",
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template_name="email/email_verification.txt",
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html_template_name="email/email_verification.html",
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context=context,
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)
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@shared_task
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def send_email_test_task(email):
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context = {
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"action_url": settings.FRONTEND_URL,
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"frontend_url": settings.FRONTEND_URL,
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"cta_label": "Otevřít aplikaci",
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}
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send_email_with_context(
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recipients=email,
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subject="Testovací e‑mail",
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template_name="email/test.txt",
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html_template_name="email/test.html",
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context=context,
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) |