from copy import deepcopy

from zope import component

from ceo_common.interfaces import IConfig


class Model:
    """A convenient place to store View data persistently."""

    def __init__(self):
        cfg = component.getUtility(IConfig)

        self.screen = None
        self.views = []
        self.title = None
        self.scene_stack = []
        self.result_view_name = None
        self.txn_view_name = None
        self.error_message = None
        self.nav_direction = 'forward'
        # View-specific data
        self._initial_viewdata = {
            'ResetPassword': {
                'uid': '',
            },
        }
        for pos in cfg.get('positions_available'):
            self._initial_viewdata[pos] = ''
        self.viewdata = deepcopy(self._initial_viewdata)
        # data which is shared between multiple views
        self.is_club_rep = False
        self.confirm_lines = None
        self.operations = None
        self.deferred_req = None
        self.resp = None
        self.db_type = None
        self.user_dict = None

    def reset(self):
        self.viewdata = deepcopy(self._initial_viewdata)
        self.is_club_rep = False
        self.confirm_lines = None
        self.operations = None
        self.deferred_req = None
        self.resp = None
        self.db_type = None
        self.user_dict = None
        self.title = None
        self.error_message = None
        self.scene_stack.clear()
        self.result_view_name = None
        self.txn_view_name = None
        for view in self.views:
            if hasattr(view, '_ceoframe_on_reset'):
                view._ceoframe_on_reset()