from __future__ import annotations

from datetime import datetime

from sqlalchemy import select
from sqlalchemy.orm import Query

from flexmeasures.data.models.annotations import (
    Annotation,
    GenericAssetAnnotationRelationship,
)
from flexmeasures.data.models.data_sources import DataSource


def query_asset_annotations(
    asset_id: int,
    annotations_after: datetime | None = None,
    annotations_before: datetime | None = None,
    sources: list[DataSource] | None = None,
    annotation_type: str | None = None,
) -> Query:
    """Match annotations assigned to the given asset."""
    query = (
        select(Annotation)
        .join(GenericAssetAnnotationRelationship)
        .filter(
            GenericAssetAnnotationRelationship.generic_asset_id == asset_id,
            GenericAssetAnnotationRelationship.annotation_id == Annotation.id,
        )
    )

    if annotations_after is not None:
        query = query.filter(
            Annotation.end > annotations_after,
        )
    if annotations_before is not None:
        query = query.filter(
            Annotation.start < annotations_before,
        )
    if sources:
        query = query.filter(
            Annotation.source.in_(sources),
        )
    if annotation_type is not None:
        query = query.filter(
            Annotation.type == annotation_type,
        )
    return query