from typing import Optional

from sqlalchemy.orm import Session

from app.application.task_answers_repository import TaskAnswersRepository
from app.domain.entities.task_answers_entity import TaskAnswerEntity
from app.domain.models.task_answers import TaskAnswer


class TaskAnswersService:
    def __init__(self, db: Session):
        self.task_answers_repository = TaskAnswersRepository(db)

    def get_all(self) -> list[TaskAnswerEntity]:
        task_answers = self.task_answers_repository.get_all()
        return [
            TaskAnswerEntity(
                id=task_answer.id,
                answer_date=task_answer.answer_date,
                text=task_answer.text,
                is_current=task_answer.is_current,
                comment=task_answer.comment,
                user_id=task_answer.user_id,
                task_id=task_answer.task_id,
            ) for task_answer in task_answers
        ]

    def get_by_id(self, task_answer_id: int) -> Optional[TaskAnswerEntity]:
        task_answer = self.task_answers_repository.get_by_id(task_answer_id)
        if task_answer:
            return TaskAnswerEntity(
                id=task_answer.id,
                answer_date=task_answer.answer_date,
                text=task_answer.text,
                is_current=task_answer.is_current,
                comment=task_answer.comment,
                user_id=task_answer.user_id,
                task_id=task_answer.task_id,
            )

        return None

    def create(self, task_answer: TaskAnswerEntity) -> TaskAnswerEntity:
        task_answer_model = TaskAnswer(
            answer_date=task_answer.answer_date,
            text=task_answer.text,
            is_current=task_answer.is_current,
            comment=task_answer.comment,
            user_id=task_answer.user_id,
            task_id=task_answer.task_id,
        )
        created_task_answer = self.task_answers_repository.create(task_answer_model)
        return TaskAnswerEntity(
            id=created_task_answer.id,
            answer_date=created_task_answer.answer_date,
            text=created_task_answer.text,
            is_current=created_task_answer.is_current,
            comment=created_task_answer.comment,
            user_id=created_task_answer.user_id,
            task_id=created_task_answer.task_id,
        )

    def update(self, task_answer_id: int, task_answer: TaskAnswerEntity) -> Optional[TaskAnswerEntity]:
        task_answer_model = self.task_answers_repository.get_by_id(task_answer_id)
        if task_answer_model:
            task_answer_model.answer_date = task_answer.answer_date
            task_answer_model.text = task_answer.text
            task_answer_model.is_current = task_answer.is_current
            task_answer_model.comment = task_answer.comment
            task_answer_model.user_id = task_answer.user_id
            task_answer_model.task_id = task_answer.task_id
            updated_task_answer = self.task_answers_repository.update(task_answer_model)
            return TaskAnswerEntity(
                id=updated_task_answer.id,
                answer_date=updated_task_answer.answer_date,
                text=updated_task_answer.text,
                is_current=updated_task_answer.is_current,
                comment=updated_task_answer.comment,
                user_id=updated_task_answer.user_id,
                task_id=updated_task_answer.task_id,
            )

        return None

    def delete(self, task_answer_id: int) -> bool:
        return self.task_answers_repository.delete(task_answer_id) is not None