Files
full-stack-fastapi-template/{{cookiecutter.project_slug}}/backend/app/app/utils.py
Sebastián Ramírez eed33d276d ♻️ Refactor backend, settings, DB sessions, types, configs, plugins (#158)
* ♻️ Refactor backend, update DB session handling

*  Add mypy config and plugins

*  Use Python-jose instead of PyJWT

as it has some extra functionalities and features

*  Add/update scripts for test, lint, format

* 🔧 Update lint and format configs

* 🎨 Update import format, comments, and types

* 🎨 Add types to config

*  Add types for all the code, and small fixes

* 🎨 Use global imports to simplify exploring with Jupyter

* ♻️ Import schemas and models, instead of each class

* 🚚 Rename db_session to db for simplicity

* 📌 Update dependencies installation for testing
2020-04-20 19:03:13 +02:00

107 lines
3.5 KiB
Python

import logging
from datetime import datetime, timedelta
from pathlib import Path
from typing import Any, Dict, Optional
import emails
from emails.template import JinjaTemplate
from jose import jwt
from app.core.config import settings
def send_email(
email_to: str,
subject_template: str = "",
html_template: str = "",
environment: Dict[str, Any] = {},
) -> None:
assert settings.EMAILS_ENABLED, "no provided configuration for email variables"
message = emails.Message(
subject=JinjaTemplate(subject_template),
html=JinjaTemplate(html_template),
mail_from=(settings.EMAILS_FROM_NAME, settings.EMAILS_FROM_EMAIL),
)
smtp_options = {"host": settings.SMTP_HOST, "port": settings.SMTP_PORT}
if settings.SMTP_TLS:
smtp_options["tls"] = True
if settings.SMTP_USER:
smtp_options["user"] = settings.SMTP_USER
if settings.SMTP_PASSWORD:
smtp_options["password"] = settings.SMTP_PASSWORD
response = message.send(to=email_to, render=environment, smtp=smtp_options)
logging.info(f"send email result: {response}")
def send_test_email(email_to: str) -> None:
project_name = settings.PROJECT_NAME
subject = f"{project_name} - Test email"
with open(Path(settings.EMAIL_TEMPLATES_DIR) / "test_email.html") as f:
template_str = f.read()
send_email(
email_to=email_to,
subject_template=subject,
html_template=template_str,
environment={"project_name": settings.PROJECT_NAME, "email": email_to},
)
def send_reset_password_email(email_to: str, email: str, token: str) -> None:
project_name = settings.PROJECT_NAME
subject = f"{project_name} - Password recovery for user {email}"
with open(Path(settings.EMAIL_TEMPLATES_DIR) / "reset_password.html") as f:
template_str = f.read()
server_host = settings.SERVER_HOST
link = f"{server_host}/reset-password?token={token}"
send_email(
email_to=email_to,
subject_template=subject,
html_template=template_str,
environment={
"project_name": settings.PROJECT_NAME,
"username": email,
"email": email_to,
"valid_hours": settings.EMAIL_RESET_TOKEN_EXPIRE_HOURS,
"link": link,
},
)
def send_new_account_email(email_to: str, username: str, password: str) -> None:
project_name = settings.PROJECT_NAME
subject = f"{project_name} - New account for user {username}"
with open(Path(settings.EMAIL_TEMPLATES_DIR) / "new_account.html") as f:
template_str = f.read()
link = settings.SERVER_HOST
send_email(
email_to=email_to,
subject_template=subject,
html_template=template_str,
environment={
"project_name": settings.PROJECT_NAME,
"username": username,
"password": password,
"email": email_to,
"link": link,
},
)
def generate_password_reset_token(email: str) -> str:
delta = timedelta(hours=settings.EMAIL_RESET_TOKEN_EXPIRE_HOURS)
now = datetime.utcnow()
expires = now + delta
exp = expires.timestamp()
encoded_jwt = jwt.encode(
{"exp": exp, "nbf": now, "sub": email}, settings.SECRET_KEY, algorithm="HS256",
)
return encoded_jwt
def verify_password_reset_token(token: str) -> Optional[str]:
try:
decoded_token = jwt.decode(token, settings.SECRET_KEY, algorithms=["HS256"])
return decoded_token["email"]
except jwt.JWTError:
return None