from sqlalchemy import Select, Delete, cast, String
from .model import Yeardata
from .schema import YeardataCreate, YeardataUpdate
from src.database.service import search_filter_sort_paginate
from typing import Optional

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


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


async def get_all(
    *,
    db_session: DbSession,
    items_per_page: Optional[int],
    search: Optional[str] = None,
    common,
):
    """Returns all documents."""
    query = Select(Yeardata)
    if search:
        query = query.filter(cast(Yeardata.year, String).ilike(f"%{search}%"))

    common["items_per_page"] = items_per_page
    results = await search_filter_sort_paginate(model=query, **common)

    # return results.scalars().all()
    return results


async def create(*, db_session: DbSession, yeardata_in: YeardataCreate):
    """Creates a new document."""
    yeardata = Yeardata(**yeardata_in.model_dump())
    db_session.add(yeardata)
    await db_session.commit()
    return yeardata


async def update(
    *, db_session: DbSession, yeardata: Yeardata, yeardata_in: YeardataUpdate
):
    """Updates a document."""
    data = yeardata_in.model_dump()

    update_data = yeardata_in.model_dump(exclude_defaults=True)

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

    await db_session.commit()

    return yeardata


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