from sqlalchemy import Select, Delete
from .model import Scope
from .schema import ScopeCreate, ScopeUpdate
from typing import Optional

from src.database.core import DbSession
from src.auth.service import CurrentUser


async def get(*, db_session: DbSession, scope_id: str) -> Optional[Scope]:
    """Returns a document based on the given document id."""
    query = Select(Scope).filter(Scope.id == scope_id)
    result = await db_session.execute(query)
    return result.scalars().one_or_none()


async def get_all(*, db_session: DbSession):
    """Returns all documents."""
    query = Select(Scope)
    result = await db_session.execute(query)
    return result.scalars().all()


async def create(*, db_session: DbSession, scope_in: ScopeCreate):
    """Creates a new document."""
    scope = Scope(**scope_in.model_dump())
    db_session.add(scope)
    await db_session.commit()
    return scope


async def update(*, db_session: DbSession, scope: Scope, scope_in: ScopeUpdate):
    """Updates a document."""
    data = scope_in.model_dump()

    update_data = scope_in.model_dump(exclude_defaults=True)

    for field in data:
        if field in update_data:
            setattr(scope, field, update_data[field])

    await db_session.commit()

    return scope


async def delete(*, db_session: DbSession, scope_id: str):
    """Deletes a document."""
    query = Delete(Scope).where(Scope.id == scope_id)
    await db_session.execute(query)
    await db_session.commit()


async def get_by_scope_name(*, db_session: DbSession, scope_name: str) -> Optional[Scope]:
    """Returns a document based on the given document id."""
    query = Select(Scope).filter(Scope.scope_name == scope_name)
    result = await db_session.execute(query)
    return result.scalars().one_or_none()