# This software may be freely redistributed under the terms of the GNU
# general public license.
#
# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

import platform
import sys
import urllib
try:
    import httplib
except:
    import http.client as httplib

from types import ModuleType

class Lazy(object):
    '''
    A decorator that sets a static function as an
    available property on a class and executes it lazily
    '''
    def __init__(self, func):
        self._func = func

    def __get__(self, obj, _=None):
        if obj is None:
            return self
        value = self._func()
        setattr(obj, self._func.func_name, value)
        return value

class Phacter(object):
    '''
    The main Phacter class
    '''
    __version__ = '0.2.0'
    __license__ = 'GPLv2'
    __author__ = 'Dan Radez <dradez@redhat.com>'

    phacts = ['kernel']
    platform_name = platform.system().lower()
    kernel = property(lambda self: self.platform_name)
    phacterversion = __version__

    def __init__(self):
        '''
        load facts platform specific
        '''
        platform_imp = __import__('phacter', None, None, [self.platform_name])
        platform_obj = getattr(platform_imp, self.platform_name)

        for method in dir(platform_obj):
            if method[0] is not '_':
                call = getattr(platform_obj, method)
                if type(call) is not ModuleType:
                    setattr(self.__class__, method, Lazy(call))
                    self.phacts.append(method)
        self.phacts.sort()

    def __getitem__(self, key):
        '''
        makes me subscriptable
        '''
        if hasattr(self, key):
            return getattr(self, key)
        else:
            return ''

if __name__ == 'phacter':
    # replace the phacter module in memory with the class
    sys.modules[__name__] = Phacter()