from pydantic import model_validator, UUID7

from fiber_package.refs import (
    CommitteeEditionRef,
    CommitteeEditionRefList,
    EntityRefList
)
from fiber_package.base import FiberBaseModel

from typing import Self, Literal
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(FiberBaseModel):
    collection_name: Literal["committee"] = "committee"

    full_name_en: str
    full_name_nl: str
    description_en: str = ""
    description_nl: str = ""
    committee_type: CommitteeType

    active: bool = True

    editions: CommitteeEditionRefList
    current_edition: CommitteeEditionRef | None

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

class CommitteeEditionModel(FiberBaseModel):
    collection_name: Literal["committee_edition"] = "committee_edition"

    members: EntityRefList
    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:
            if uuid not in self.members:
                raise ValueError("Cannot only assign functions to committee members")
        return self