Completed
Branch master (4d0d43)
by Jochen
03:26 queued 01:02
created

_find_user_by_screen_name_or_email_address()   A

Complexity

Conditions 2

Size

Total Lines 10
Code Lines 7

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 2
eloc 7
nop 1
dl 0
loc 10
rs 10
c 0
b 0
f 0
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"""
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byceps.services.authentication.service
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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:Copyright: 2006-2020 Jochen Kupperschmidt
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:License: Modified BSD, see LICENSE for details.
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"""
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from typing import Optional
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from ..user import service as user_service
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from ..user.transfer.models import User
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from .exceptions import AuthenticationFailed
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from .password import service as password_service
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def authenticate(screen_name_or_email_address: str, password: str) -> User:
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    """Try to authenticate the user.
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    Return the user object on success, or raise an exception on failure.
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    """
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    # Look up user.
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    user = _find_user_by_screen_name_or_email_address(
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        screen_name_or_email_address
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    )
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    if user is None:
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        # Screen name/email address is unknown.
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        raise AuthenticationFailed()
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    # Account must be initialized.
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    if not user.initialized:
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        # User account is not initialized.
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        raise AuthenticationFailed()
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    # Account must not be suspended.
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    if user.suspended:
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        # User account is suspended.
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        raise AuthenticationFailed()
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    # Account must not be deleted.
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    if user.deleted:
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        # User account has been deleted.
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        raise AuthenticationFailed()
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    # Verify credentials.
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    if not password_service.is_password_valid_for_user(user.id, password):
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        # Password does not match.
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        raise AuthenticationFailed()
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    return user.to_dto()
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def _find_user_by_screen_name_or_email_address(
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    screen_name_or_email_address: str
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) -> Optional[User]:
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    if '@' in screen_name_or_email_address:
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        return user_service.find_user_by_email_address(
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            screen_name_or_email_address
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        )
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    else:
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        return user_service.find_user_by_screen_name(
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            screen_name_or_email_address, case_insensitive=True
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        )
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