"""Image search and filtering functionality."""

from sqlalchemy import or_
from sqlalchemy.orm import Session

from app.database.models.image import Image


def search_images(
    user_id: str,
    db: Session,
    query: str | None = None,
    limit: int = 50,
    offset: int = 0,
) -> list[Image]:
    """
    Search user's image library with optional filters.

    Args:
        user_id: User UUID
        db: Database session
        query: Search query (searches filename)
        limit: Maximum results (default 50)
        offset: Pagination offset (default 0)

    Returns:
        List of matching images
    """
    # Base query - get user's images
    stmt = db.query(Image).filter(Image.user_id == user_id)

    # Add search filter if query provided
    if query:
        search_term = f"%{query}%"
        stmt = stmt.filter(
            or_(
                Image.filename.ilike(search_term),
                Image.image_metadata["format"].astext.ilike(search_term),
            )
        )

    # Order by most recently uploaded
    stmt = stmt.order_by(Image.created_at.desc())

    # Apply pagination
    stmt = stmt.limit(limit).offset(offset)

    return stmt.all()


def count_images(user_id: str, db: Session, query: str | None = None) -> int:
    """
    Count images matching search criteria.

    Args:
        user_id: User UUID
        db: Database session
        query: Search query (optional)

    Returns:
        Count of matching images
    """
    stmt = db.query(Image).filter(Image.user_id == user_id)

    if query:
        search_term = f"%{query}%"
        stmt = stmt.filter(
            or_(
                Image.filename.ilike(search_term),
                Image.image_metadata["format"].astext.ilike(search_term),
            )
        )

    return stmt.count()