from __future__ import annotations

from dataclasses import dataclass, field
from datetime import date
from typing import TYPE_CHECKING, Optional

if TYPE_CHECKING:
    from backend.model.tribe import Tribe


@dataclass
class Assessment:
    name: str
    tribe: Tribe
    term: int
    exercises: list[Exercise] = field(default_factory=list)

    def __post_init__(self) -> None:
        self.tribe.register_assessment(self)

    def register_exercise(self, exercise: Exercise):
        self.exercises.append(exercise)

    @property
    def questions(self):
        return sum([exercise.questions for exercise in self.exercises])


@dataclass
class Exercise:
    name: str
    assessment: Assessment
    date: Optional[date]
    questions: list[Question] = field(default_factory=list)

    def __post_init__(self) -> None:
        self.assessment.register_exercise(self)

    def register_question(self, question: Question):
        self.questions.append(question)


@dataclass(frozen=True)
class Domain:
    name: str
    description: str


@dataclass(frozen=True)
class Skill:
    name: str
    description: str


@dataclass
class Question:
    name: str
    exercise: Exercise
    description: str
    skill: Skill
    domain: Domain
    is_leveled: bool
    scale: int

    def __post_init__(
        self,
    ) -> None:

        self.exercise.register_question(self)