from pydantic import BaseModel, model_validator
from fiber_package.util import EntityList, GroupList, GroupRef

from typing import Self
from datetime import date

from .enums import CommitteeType

'''
Committees are groups of members for a definite period.
Every committee has a list of editions.
An edition is a definite group of members with functions and a timespan.
'''

class CommitteeModel(BaseModel):
    full_name_EN: str
    full_name_NL: str
    description_EN: str = ""
    description_NL: str = ""
    committee_type: CommitteeType

    active: bool = True

    editions: GroupList
    current_edition: GroupRef | None

    @model_validator(mode='after')
    def current_edition_in_editions(self) -> Self:
        uuid = self.current_edition
        if uuid is None:
            return self
        if uuid not in self.editions:
            raise ValueError("Current edition must be in list of editions")
        return self

    # TODO... maybe require that an active board always has a current_edition that is non-empty?

class CommitteeEditionModel(BaseModel):
    members: EntityList
    functions: dict[UUID7, str]

    start_date: date
    end_date: date | None # None means ongoing

    @model_validator(mode='after')
    def functions_to_members_only(self) -> Self:
        for uuid in self.functions.keys():
            if uuid not in self.members:
                raise ValueError("Cannot only assign functions to members")
        return self