FitTrackee/fittrackee/users/utils.py

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import re
from typing import Optional, Tuple
from flask import Request
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from fittrackee.responses import (
ForbiddenErrorResponse,
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HttpResponse,
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UnauthorizedErrorResponse,
)
from .models import User
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def is_admin(user_id: int) -> bool:
"""
Return if user has admin rights
"""
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user = User.query.filter_by(id=user_id).first()
return user.admin
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def is_valid_email(email: str) -> bool:
"""
Return if email format is valid
"""
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mail_pattern = r"(^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$)"
return re.match(mail_pattern, email) is not None
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def check_passwords(password: str, password_conf: str) -> str:
"""
Verify if password and password confirmation are the same and have
more than 8 characters
If not, it returns not empty string
"""
ret = ''
if password_conf != password:
ret = 'Password and password confirmation don\'t match.\n'
if len(password) < 8:
ret += 'Password: 8 characters required.\n'
return ret
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def register_controls(
username: str, email: str, password: str, password_conf: str
) -> str:
"""
Verify if user name, email and passwords are valid
If not, it returns not empty string
"""
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ret = ''
if not 2 < len(username) < 13:
ret += 'Username: 3 to 12 characters required.\n'
if not is_valid_email(email):
ret += 'Valid email must be provided.\n'
ret += check_passwords(password, password_conf)
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return ret
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def verify_user(
current_request: Request, verify_admin: bool
) -> Tuple[Optional[HttpResponse], Optional[int]]:
"""
Return user id, if the provided token is valid and if user has admin
rights if 'verify_admin' is True
"""
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default_message = 'Provide a valid auth token.'
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auth_header = current_request.headers.get('Authorization')
if not auth_header:
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return UnauthorizedErrorResponse(default_message), None
auth_token = auth_header.split(' ')[1]
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resp = User.decode_auth_token(auth_token)
if isinstance(resp, str):
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return UnauthorizedErrorResponse(resp), None
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user = User.query.filter_by(id=resp).first()
if not user:
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return UnauthorizedErrorResponse(default_message), None
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if verify_admin and not is_admin(resp):
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return ForbiddenErrorResponse(), None
return None, resp
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def can_view_workout(
auth_user_id: int, workout_user_id: int
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) -> Optional[HttpResponse]:
"""
Return error response if user has no right to view workout
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"""
if auth_user_id != workout_user_id:
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return ForbiddenErrorResponse()
return None