# -*- coding: utf-8 -*-
"""
oauthlib.oauth2.rfc6749
~~~~~~~~~~~~~~~~~~~~~~~

This module is an implementation of various logic needed
for consuming and providing OAuth 2.0 RFC6749.
"""
from __future__ import absolute_import, unicode_literals

from ..grant_types import OpenIDConnectAuthCode
from ..tokens import BearerToken
from ..grant_types import AuthorizationCodeGrant
from ..grant_types import ImplicitGrant
from ..grant_types import ResourceOwnerPasswordCredentialsGrant
from ..grant_types import ClientCredentialsGrant
from ..grant_types import RefreshTokenGrant
from ..grant_types import OpenIDConnectImplicit
from ..grant_types import AuthCodeGrantDispatcher

from .authorization import AuthorizationEndpoint
from .token import TokenEndpoint
from .resource import ResourceEndpoint
from .revocation import RevocationEndpoint


class Server(AuthorizationEndpoint, TokenEndpoint, ResourceEndpoint,
             RevocationEndpoint):

    """An all-in-one endpoint featuring all four major grant types."""

    def __init__(self, request_validator, token_expires_in=None,
                 token_generator=None, refresh_token_generator=None,
                 *args, **kwargs):
        """Construct a new all-grants-in-one server.

        :param request_validator: An implementation of
                                  oauthlib.oauth2.RequestValidator.
        :param token_expires_in: An int or a function to generate a token
                                 expiration offset (in seconds) given a
                                 oauthlib.common.Request object.
        :param token_generator: A function to generate a token from a request.
        :param refresh_token_generator: A function to generate a token from a
                                        request for the refresh token.
        :param kwargs: Extra parameters to pass to authorization-,
                       token-, resource-, and revocation-endpoint constructors.
        """
        auth_grant = AuthorizationCodeGrant(request_validator)
        implicit_grant = ImplicitGrant(request_validator)
        password_grant = ResourceOwnerPasswordCredentialsGrant(
            request_validator)
        credentials_grant = ClientCredentialsGrant(request_validator)
        refresh_grant = RefreshTokenGrant(request_validator)
        openid_connect_auth = OpenIDConnectAuthCode(request_validator)
        openid_connect_implicit = OpenIDConnectImplicit(request_validator)

        bearer = BearerToken(request_validator, token_generator,
                             token_expires_in, refresh_token_generator)

        auth_grant_choice = AuthCodeGrantDispatcher( default_auth_grant=auth_grant, oidc_auth_grant=openid_connect_auth)

        # See http://openid.net/specs/oauth-v2-multiple-response-types-1_0.html#Combinations for valid combinations
        # internally our AuthorizationEndpoint will ensure they can appear in any order for any valid combination
        AuthorizationEndpoint.__init__(self, default_response_type='code',
                                       response_types={
                                           'code': auth_grant_choice,
                                           'token': implicit_grant,
                                           'id_token': openid_connect_implicit,
                                           'id_token token': openid_connect_implicit,
                                           'code token': openid_connect_auth,
                                           'code id_token': openid_connect_auth,
                                           'code token id_token': openid_connect_auth,
                                           'none': auth_grant
                                       },
                                       default_token_type=bearer)
        TokenEndpoint.__init__(self, default_grant_type='authorization_code',
                               grant_types={
                                   'authorization_code': auth_grant,
                                   'password': password_grant,
                                   'client_credentials': credentials_grant,
                                   'refresh_token': refresh_grant,
                                   'openid' : openid_connect_auth
                               },
                               default_token_type=bearer)
        ResourceEndpoint.__init__(self, default_token='Bearer',
                                  token_types={'Bearer': bearer})
        RevocationEndpoint.__init__(self, request_validator)


class WebApplicationServer(AuthorizationEndpoint, TokenEndpoint, ResourceEndpoint,
                           RevocationEndpoint):

    """An all-in-one endpoint featuring Authorization code grant and Bearer tokens."""

    def __init__(self, request_validator, token_generator=None,
                 token_expires_in=None, refresh_token_generator=None, **kwargs):
        """Construct a new web application server.

        :param request_validator: An implementation of
                                  oauthlib.oauth2.RequestValidator.
        :param token_expires_in: An int or a function to generate a token
                                 expiration offset (in seconds) given a
                                 oauthlib.common.Request object.
        :param token_generator: A function to generate a token from a request.
        :param refresh_token_generator: A function to generate a token from a
                                        request for the refresh token.
        :param kwargs: Extra parameters to pass to authorization-,
                       token-, resource-, and revocation-endpoint constructors.
        """
        auth_grant = AuthorizationCodeGrant(request_validator)
        refresh_grant = RefreshTokenGrant(request_validator)
        bearer = BearerToken(request_validator, token_generator,
                             token_expires_in, refresh_token_generator)
        AuthorizationEndpoint.__init__(self, default_response_type='code',
                                       response_types={'code': auth_grant},
                                       default_token_type=bearer)
        TokenEndpoint.__init__(self, default_grant_type='authorization_code',
                               grant_types={
                                   'authorization_code': auth_grant,
                                   'refresh_token': refresh_grant,
                               },
                               default_token_type=bearer)
        ResourceEndpoint.__init__(self, default_token='Bearer',
                                  token_types={'Bearer': bearer})
        RevocationEndpoint.__init__(self, request_validator)


class MobileApplicationServer(AuthorizationEndpoint, ResourceEndpoint,
                              RevocationEndpoint):

    """An all-in-one endpoint featuring Implicit code grant and Bearer tokens."""

    def __init__(self, request_validator, token_generator=None,
                 token_expires_in=None, refresh_token_generator=None, **kwargs):
        """Construct a new implicit grant server.

        :param request_validator: An implementation of
                                  oauthlib.oauth2.RequestValidator.
        :param token_expires_in: An int or a function to generate a token
                                 expiration offset (in seconds) given a
                                 oauthlib.common.Request object.
        :param token_generator: A function to generate a token from a request.
        :param refresh_token_generator: A function to generate a token from a
                                        request for the refresh token.
        :param kwargs: Extra parameters to pass to authorization-,
                       token-, resource-, and revocation-endpoint constructors.
        """
        implicit_grant = ImplicitGrant(request_validator)
        bearer = BearerToken(request_validator, token_generator,
                             token_expires_in, refresh_token_generator)
        AuthorizationEndpoint.__init__(self, default_response_type='token',
                                       response_types={
                                           'token': implicit_grant},
                                       default_token_type=bearer)
        ResourceEndpoint.__init__(self, default_token='Bearer',
                                  token_types={'Bearer': bearer})
        RevocationEndpoint.__init__(self, request_validator,
                                    supported_token_types=['access_token'])


class LegacyApplicationServer(TokenEndpoint, ResourceEndpoint,
                              RevocationEndpoint):

    """An all-in-one endpoint featuring Resource Owner Password Credentials grant and Bearer tokens."""

    def __init__(self, request_validator, token_generator=None,
                 token_expires_in=None, refresh_token_generator=None, **kwargs):
        """Construct a resource owner password credentials grant server.

        :param request_validator: An implementation of
                                  oauthlib.oauth2.RequestValidator.
        :param token_expires_in: An int or a function to generate a token
                                 expiration offset (in seconds) given a
                                 oauthlib.common.Request object.
        :param token_generator: A function to generate a token from a request.
        :param refresh_token_generator: A function to generate a token from a
                                        request for the refresh token.
        :param kwargs: Extra parameters to pass to authorization-,
                       token-, resource-, and revocation-endpoint constructors.
        """
        password_grant = ResourceOwnerPasswordCredentialsGrant(
            request_validator)
        refresh_grant = RefreshTokenGrant(request_validator)
        bearer = BearerToken(request_validator, token_generator,
                             token_expires_in, refresh_token_generator)
        TokenEndpoint.__init__(self, default_grant_type='password',
                               grant_types={
                                   'password': password_grant,
                                   'refresh_token': refresh_grant,
                               },
                               default_token_type=bearer)
        ResourceEndpoint.__init__(self, default_token='Bearer',
                                  token_types={'Bearer': bearer})
        RevocationEndpoint.__init__(self, request_validator)


class BackendApplicationServer(TokenEndpoint, ResourceEndpoint,
                               RevocationEndpoint):

    """An all-in-one endpoint featuring Client Credentials grant and Bearer tokens."""

    def __init__(self, request_validator, token_generator=None,
                 token_expires_in=None, refresh_token_generator=None, **kwargs):
        """Construct a client credentials grant server.

        :param request_validator: An implementation of
                                  oauthlib.oauth2.RequestValidator.
        :param token_expires_in: An int or a function to generate a token
                                 expiration offset (in seconds) given a
                                 oauthlib.common.Request object.
        :param token_generator: A function to generate a token from a request.
        :param refresh_token_generator: A function to generate a token from a
                                        request for the refresh token.
        :param kwargs: Extra parameters to pass to authorization-,
                       token-, resource-, and revocation-endpoint constructors.
        """
        credentials_grant = ClientCredentialsGrant(request_validator)
        bearer = BearerToken(request_validator, token_generator,
                             token_expires_in, refresh_token_generator)
        TokenEndpoint.__init__(self, default_grant_type='client_credentials',
                               grant_types={
                                   'client_credentials': credentials_grant},
                               default_token_type=bearer)
        ResourceEndpoint.__init__(self, default_token='Bearer',
                                  token_types={'Bearer': bearer})
        RevocationEndpoint.__init__(self, request_validator,
                                    supported_token_types=['access_token'])
