# Path: lib/session_manager.py
# class SessionManager(object):
#     def __init__(self, cfg):
#         self.cfg = cfg
#         self.store = SessionStore()
#         self.secure_store = StoreAdapterFactory.instantiate(cfg.secrets_store)()
#         self.secure_store.setup()
# 
#     def get_by_userid(self, user_id):
#         """
#         Fetch information from the store by user_id.
#         param: user_id[string]  A string uniquely identifying the chat user.
#         """
#         session = self.store.get_by_userid(user_id)
#         if session is False:
#             raise SessionInvalidError
#         return session
# 
#     def get_by_uuid(self, _uuid):
#         """
#         Fetch information related to a session by its UUID.
#         If a session doesn't exist, False is returned.
#         """
#         session = self.store.get_by_uuid(_uuid)
#         if session is False:
#             raise SessionInvalidError
#         return session
# 
#     def create(self, user_id, user_secret, session_ttl):
#         """
#         param: user_id - Chat user unique identifier.
#         param: user_secret - A pseudo-secret word provided by
#         the user and used as part of the UUID hashing process.
#         """
#         # Don't create a new session if one already exists.
#         if self.exists(user_id):
#             raise SessionExistsError
#         session = Session(user_id, user_secret, session_ttl)
#         # Store the session.
#         self.store.put(session)
#         return session
# 
#     def delete(self, user_id):
#         """
#         Remove a session from the manager
#         """
#         session = self.get_by_userid(user_id)
#         if session:
#             self.secure_store.delete(session.id())
#         self.store.delete(user_id)
# 
#     def list_sessions(self):
#         """
#         List all available sessions.
#         """
#         return self.store.list()
# 
#     def update(self, session):
#         raise NotImplementedError
# 
#     def exists(self, user_id):
#         return self.store.get_by_userid(user_id) is not False
# 
#     def put_secret(self, session_id, secret):
#         self.secure_store.set(session_id, secret)
#         return True
# 
#     def get_secret(self, session_id):
#         return self.secure_store.get(session_id)
# 
# Path: lib/session.py
# def generate_password(length=8):
#     rnd = SystemRandom()
#     if length > 255:
#         length = 255
#     return "".join([rnd.choice(string.hexdigits) for _ in range(length)])
# 
# Path: lib/errors.py
# class SessionInvalidError(Error):
#     def __init__(self, message="Session is invalid."):
#         super(SessionInvalidError, self).__init__()
#         self.message = message


import logging
from lib.session_manager import SessionManager
from lib.session import generate_password
from lib.errors import SessionInvalidError
from errbot.backends.base import Identifier
    def consume_session(self, session_id):
        """
        Fetch the session and unseal it to mark it as consumed.
        """
        session = self.sessions.get_by_uuid(session_id)
        if session is False:
            LOG.debug("Invalid session id '{}'.".format(session_id))
            raise SessionInvalidError
        session.unseal()
        return True

    def list_sessions(self):
        """
        Returns a list of sessions.
        """
        return self.sessions.list_sessions()

    def session_url(self, session_id, url_path="/"):
        """
        Return a URL formatted with the UUID query string attached.
        """
        return "{}{}?uuid={}".format(self.bot.cfg.auth_handler.url, url_path, session_id)

    def delete_session(self, session_id):
        """
        Delete a session from the store.
        """
        session = self.sessions.get_by_uuid(session_id)
        if session is False:
            LOG.debug("Session '{}' doesn't exist to be deleted".format(session_id))

# Path: lib/session_manager.py
# class SessionManager(object):
#     def __init__(self, cfg):
#         self.cfg = cfg
#         self.store = SessionStore()
#         self.secure_store = StoreAdapterFactory.instantiate(cfg.secrets_store)()
#         self.secure_store.setup()
# 
#     def get_by_userid(self, user_id):
#         """
#         Fetch information from the store by user_id.
#         param: user_id[string]  A string uniquely identifying the chat user.
#         """
#         session = self.store.get_by_userid(user_id)
#         if session is False:
#             raise SessionInvalidError
#         return session
# 
#     def get_by_uuid(self, _uuid):
#         """
#         Fetch information related to a session by its UUID.
#         If a session doesn't exist, False is returned.
#         """
#         session = self.store.get_by_uuid(_uuid)
#         if session is False:
#             raise SessionInvalidError
#         return session
# 
#     def create(self, user_id, user_secret, session_ttl):
#         """
#         param: user_id - Chat user unique identifier.
#         param: user_secret - A pseudo-secret word provided by
#         the user and used as part of the UUID hashing process.
#         """
#         # Don't create a new session if one already exists.
#         if self.exists(user_id):
#             raise SessionExistsError
#         session = Session(user_id, user_secret, session_ttl)
#         # Store the session.
#         self.store.put(session)
#         return session
# 
#     def delete(self, user_id):
#         """
#         Remove a session from the manager
#         """
#         session = self.get_by_userid(user_id)
#         if session:
#             self.secure_store.delete(session.id())
#         self.store.delete(user_id)
# 
#     def list_sessions(self):
#         """
#         List all available sessions.
#         """
#         return self.store.list()
# 
#     def update(self, session):
#         raise NotImplementedError
# 
#     def exists(self, user_id):
#         return self.store.get_by_userid(user_id) is not False
# 
#     def put_secret(self, session_id, secret):
#         self.secure_store.set(session_id, secret)
#         return True
# 
#     def get_secret(self, session_id):
#         return self.secure_store.get(session_id)
# 
# Path: lib/session.py
# def generate_password(length=8):
#     rnd = SystemRandom()
#     if length > 255:
#         length = 255
#     return "".join([rnd.choice(string.hexdigits) for _ in range(length)])
# 
# Path: lib/errors.py
# class SessionInvalidError(Error):
#     def __init__(self, message="Session is invalid."):
#         super(SessionInvalidError, self).__init__()
#         self.message = message


# Path: lib/authentication_controller.py
import logging
from lib.session_manager import SessionManager
from lib.session import generate_password
from lib.errors import SessionInvalidError
from errbot.backends.base import Identifier

    def consume_session(self, session_id):
        """
        Fetch the session and unseal it to mark it as consumed.
        """
        session = self.sessions.get_by_uuid(session_id)
        if session is False:
            LOG.debug("Invalid session id '{}'.".format(session_id))
            raise SessionInvalidError
        session.unseal()
        return True

    def list_sessions(self):
        """
        Returns a list of sessions.
        """
        return self.sessions.list_sessions()

    def session_url(self, session_id, url_path="/"):
        """
        Return a URL formatted with the UUID query string attached.
        """
        return "{}{}?uuid={}".format(self.bot.cfg.auth_handler.url, url_path, session_id)

    def delete_session(self, session_id):
        """
        Delete a session from the store.
        """
        session = self.sessions.get_by_uuid(session_id)
        if session is False:
            LOG.debug("Session '{}' doesn't exist to be deleted".format(session_id))

            raise SessionInvalidError