from intelligine.core.exceptions import BrainPartAlreadyExist
from intelligine.cst import BRAIN_SCHEMA


class Brain():

    _brain_part_class = {}

    def __init__(self, context, host):
        self._context = context
        self._host = host
        self._schema = {}
        self._parts = {}

    def _set_brain_part(self, name, brain_part, replace=False):
        if name in self._parts and not replace:
            raise BrainPartAlreadyExist()
        self._parts[name] = brain_part
        self._update_schema()

    def get_part(self, name):
        return self._parts[name]

    def _update_schema(self):
        self._schema = {}
        for part_name in self._parts:
            self._schema[part_name] = self._parts[part_name].__class__
        self._context.metas.value.set(BRAIN_SCHEMA, self._host.get_id(), self._schema)