# -*- coding: utf-8 -*-
# vim: autoindent shiftwidth=4 expandtab textwidth=80 tabstop=4 softtabstop=4

###############################################################################
# ScribeEngine - Open Source Blog Software                                    #
# --------------------------------------------------------------------------- #
# Copyright (c) 2010 Raoul Snyman                                             #
# --------------------------------------------------------------------------- #
# This program is free software; you can redistribute it and/or modify it     #
# under the terms of the GNU General Public License as published by the Free  #
# Software Foundation; version 2 of the License.                              #
#                                                                             #
# This program is distributed in the hope that it will be useful, but WITHOUT #
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or       #
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for    #
# more details.                                                               #
#                                                                             #
# You should have received a copy of the GNU General Public License along     #
# with this program; if not, write to the Free Software Foundation, Inc., 59  #
# Temple Place, Suite 330, Boston, MA 02111-1307 USA                          #
###############################################################################

"""
This module contains the Class definitions.
"""

class BaseModel(object):
    """
    A base model class which all the other classes inherit from. This provides
    all model classes with a set of utility methods.
    """
    def __init__(self, **kwargs):
        """
        This constructor will set all the classes properties based on the
        keyword arguments supplied.
        """
        for keyword, argument in kwargs.iteritems():
            setattr(self, keyword, argument)

    def __repr__(self):
        if hasattr(self, 'id'):
            return '<%s id=%s>' % (self.__name__, self.id)

class Category(BaseModel):
    """
    This is a category for blog posts.
    """
    pass


class Comment(BaseModel):
    """
    All blog posts have comments. This is a single comment.
    """
    pass


class Page(BaseModel):
    """
    A page on the blog. This is separate from a blog entry, for things like
    about pages.
    """
    pass


class Permission(BaseModel):
    """
    A single permission.
    """
    pass


class Post(BaseModel):
    """
    The most import part of all of this, the blog post.
    """
    pass


class Role(BaseModel):
    """
    A role defines a set of permissions.
    """
    pass


class Tag(BaseModel):
    """
    A tag, an unstructured category, for blog posts.
    """
    pass


class User(BaseModel):
    """
    The user.
    """
    def has_permission(self, permission):
        if isinstance(permission, basestring):
            for role in self.roles:
                for perm in role.permissions:
                    if perm.name == permission:
                        return True
            return False
        elif isinstance(permission, Permission):
            for role in self.roles:
                for perm in role.permissions:
                    if perm == permission:
                        return True
            return False
        else:
            return False


class Variable(BaseModel):
    """
    System variables.
    """
    pass