"""Read-only API endpoints for processing pipeline event logs."""

from uuid import UUID

from fastapi import APIRouter, Depends, Query
from sqlalchemy.orm import Session

from app.db.base import get_session
from app.schemas.processing_logs import ProcessingLogEntryResponse, ProcessingLogListResponse
from app.services.processing_logs import (
    cleanup_processing_logs,
    clear_processing_logs,
    count_processing_logs,
    list_processing_logs,
)


router = APIRouter()


@router.get("", response_model=ProcessingLogListResponse)
def get_processing_logs(
    offset: int = Query(default=0, ge=0),
    limit: int = Query(default=120, ge=1, le=400),
    document_id: UUID | None = Query(default=None),
    session: Session = Depends(get_session),
) -> ProcessingLogListResponse:
    """Returns paginated processing logs ordered from newest to oldest."""

    items = list_processing_logs(
        session=session,
        limit=limit,
        offset=offset,
        document_id=document_id,
    )
    total = count_processing_logs(session=session, document_id=document_id)
    return ProcessingLogListResponse(
        total=total,
        items=[ProcessingLogEntryResponse.model_validate(item) for item in items],
    )


@router.post("/trim")
def trim_processing_logs(
    keep_document_sessions: int = Query(default=2, ge=0, le=20),
    keep_unbound_entries: int = Query(default=80, ge=0, le=400),
    session: Session = Depends(get_session),
) -> dict[str, int]:
    """Deletes old processing logs while keeping recent document sessions and unbound events."""

    result = cleanup_processing_logs(
        session=session,
        keep_document_sessions=keep_document_sessions,
        keep_unbound_entries=keep_unbound_entries,
    )
    session.commit()
    return result


@router.post("/clear")
def clear_all_processing_logs(session: Session = Depends(get_session)) -> dict[str, int]:
    """Deletes all processing logs to reset the diagnostics timeline."""

    result = clear_processing_logs(session=session)
    session.commit()
    return result