from backend.model.student import Student
from backend.model.tribe import Tribe
from backend.repository.abstract_repository import AbstractRepository
from backend.repository.student_sqlite_repository import StudentRepositoryError
from backend.repository.tribe_sqlite_repository import TribeRepositoryError


class TribeExists(Exception):
    pass


class TribeDoesNotExist(Exception):
    pass


class StudentExists(Exception):
    pass


class StudentDoesExist(Exception):
    pass


def add_tribe(name: str, level: str, tribe_repo: AbstractRepository, conn) -> Tribe:
    tribe = Tribe(name=name, level=level)
    try:
        tribe_repo.add(tribe)
    except TribeRepositoryError:
        raise TribeExists(f"The tribe {tribe.name} already exists")
    conn.commit()
    return tribe


def update_tribe(name: str, level: str, tribe_repo: AbstractRepository, conn) -> Tribe:
    tribe = Tribe(name=name, level=level)
    try:
        tribe_repo.update(name=name, tribe=tribe)
    except TribeRepositoryError:
        raise TribeDoesNotExist(f"The tribe {name} does not exists you can't update it")
    conn.commit()
    return tribe


def delete_tribe(name: str, tribe_repo: AbstractRepository, conn) -> None:
    try:
        tribe_repo.delete(name=name)
    except TribeRepositoryError:
        raise TribeDoesNotExist(f"The tribe {name} does not exists you can't delete it")

    conn.commit()


def add_student(
    name: str,
    tribe: str,
    student_repo: AbstractRepository,
    tribe_repo: AbstractRepository,
    conn,
) -> Student:

    try:
        _tribe = tribe_repo.get(tribe)
    except TribeRepositoryError:
        raise TribeDoesNotExist(
            f"The tribe {tribe} does not exists. Can't add a student in it"
        )

    student = Student(name=name, tribe=_tribe)

    try:
        student_repo.add(student)
    except StudentRepositoryError:
        raise StudentExists(f"The student {student.name} already exists. Can't add it.")

    conn.commit()
    return student