"""
FILE: app/core/ingestion/ingestion_db.py
DESCRIPTION: Datenbank-Schnittstelle für Note-Metadaten und Artefakt-Prüfung.
             WP-14: Umstellung auf zentrale database-Infrastruktur.
"""
from typing import Optional, Tuple
from qdrant_client import QdrantClient
from qdrant_client.http import models as rest

# Import der modularisierten Namen-Logik zur Sicherstellung der Konsistenz
from app.core.database import collection_names

def fetch_note_payload(client: QdrantClient, prefix: str, note_id: str) -> Optional[dict]:
    """Holt die Metadaten einer Note aus Qdrant via Scroll."""
    notes_col, _, _ = collection_names(prefix)
    try:
        f = rest.Filter(must=[rest.FieldCondition(key="note_id", match=rest.MatchValue(value=note_id))])
        pts, _ = client.scroll(collection_name=notes_col, scroll_filter=f, limit=1, with_payload=True)
        return pts[0].payload if pts else None
    except: return None

def artifacts_missing(client: QdrantClient, prefix: str, note_id: str) -> Tuple[bool, bool]:
    """Prüft Qdrant aktiv auf vorhandene Chunks und Edges."""
    _, chunks_col, edges_col = collection_names(prefix)
    try:
        f = rest.Filter(must=[rest.FieldCondition(key="note_id", match=rest.MatchValue(value=note_id))])
        c_pts, _ = client.scroll(collection_name=chunks_col, scroll_filter=f, limit=1)
        e_pts, _ = client.scroll(collection_name=edges_col, scroll_filter=f, limit=1)
        return (not bool(c_pts)), (not bool(e_pts))
    except: return True, True

def purge_artifacts(client: QdrantClient, prefix: str, note_id: str):
    """Löscht verwaiste Chunks/Edges vor einem Re-Import."""
    _, chunks_col, edges_col = collection_names(prefix)
    f = rest.Filter(must=[rest.FieldCondition(key="note_id", match=rest.MatchValue(value=note_id))])
    # Iteration über die nun zentral verwalteten Collection-Namen
    for col in [chunks_col, edges_col]:
        try: client.delete(collection_name=col, points_selector=rest.FilterSelector(filter=f))
        except: pass