#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
FILE: scripts/assert_payload_schema.py
VERSION: 2.1.0 (2025-12-15)
STATUS: Active
COMPATIBILITY: v2.9.1 (Post-WP14/WP-15b)

Zweck:
-------
Prüft, ob die erwarteten Payload-Indizes auf allen Collections vorhanden sind.
Validiert Schema-Integrität für CI/CD und Wartung.

Funktionsweise:
---------------
1. Ermittelt Collections für das Präfix (notes, chunks, edges)
2. Lädt Payload-Schema für jede Collection
3. Prüft, ob alle Pflichtfelder indiziert sind:
   - notes: note_id, type, title, updated, tags
   - chunks: note_id, chunk_id, index, type, tags
   - edges: note_id, kind, scope, source_id, target_id, chunk_id
4. Gibt Validierungs-Ergebnis aus

Ergebnis-Interpretation:
------------------------
- Ausgabe: JSON mit Validierungs-Ergebnissen
  * collections: Schema-Status pro Collection
  * missing: Fehlende Indizes
  * valid: true/false
- Exit-Code 0: Alle Indizes vorhanden
- Exit-Code 1: Fehlende Indizes gefunden

Verwendung:
-----------
- CI/CD-Validierung nach ensure_payload_indexes
- Diagnose von Index-Problemen
- Wartung und Audit

Hinweise:
---------
- Kompatibel mit verschiedenen qdrant-client Versionen
- Nutzt Fallback-Strategie für Schema-Abfrage

Aufruf:
-------
python3 -m scripts.assert_payload_schema --prefix mindnet

Parameter:
----------
--prefix TEXT   Collection-Präfix (Default: ENV COLLECTION_PREFIX oder mindnet)

Änderungen:
-----------
v2.1.0 (2025-12-15): Dokumentation aktualisiert
v1.1.0: Kompatibilität mit verschiedenen qdrant-client Versionen
v1.0.0: Initial Release
"""
from __future__ import annotations

import json
import os
import sys
import urllib.error
import urllib.request
from typing import Any, Dict, List

from app.core.database.qdrant import QdrantConfig, get_client, collection_names

REQUIRED = {
    "notes":  ["note_id", "type", "title", "updated", "tags"],
    "chunks": ["note_id", "chunk_id", "index", "type", "tags"],
    "edges":  ["note_id", "kind", "scope", "source_id", "target_id", "chunk_id"],
}

def _safe_model_dump(obj: Any) -> Dict[str, Any]:
    if hasattr(obj, "model_dump"):
        return obj.model_dump()
    if hasattr(obj, "dict"):
        return obj.dict()
    return obj if isinstance(obj, dict) else {}

def _cfg_base_url(cfg) -> str:
    if getattr(cfg, "url", None):
        return cfg.url.rstrip('/')
    host = getattr(cfg, "host", None) or os.getenv("QDRANT_HOST") or "127.0.0.1"
    port = getattr(cfg, "port", None) or os.getenv("QDRANT_PORT") or "6333"
    return f"http://{host}:{port}"

def _http_get(url: str, api_key: str | None) -> Dict[str, Any]:
    req = urllib.request.Request(url, method="GET")
    if api_key:
        req.add_header("api-key", api_key)
        req.add_header("Authorization", f"Bearer {api_key}")
    req.add_header("Accept", "application/json")
    with urllib.request.urlopen(req, timeout=30) as resp:
        data = resp.read()
        return json.loads(data.decode("utf-8"))

def get_collection_payload_schema(client, cfg, name: str) -> Dict[str, Any] | None:
    # 1) OpenAPI client mit Flag
    try:
        oc = getattr(client, "openapi_client", None)
        if oc is not None and hasattr(oc, "collections_api"):
            api = oc.collections_api
            info = api.get_collection(collection_name=name, with_payload_schema=True)
            d = _safe_model_dump(info)
            return (d.get("result") or {}).get("payload_schema")
    except Exception:
        pass
    # 2) Wrapper (manche Versionen liefern Schema auch ohne Flag)
    try:
        info = client.get_collection(collection_name=name)
        d = _safe_model_dump(info)
        ps = (d.get("result") or {}).get("payload_schema")
        if ps is not None:
            return ps
    except Exception:
        pass
    # 3) Direkter HTTP-Call
    try:
        base = _cfg_base_url(cfg)
        url = f"{base}/collections/{name}?with_payload_schema=true"
        raw = _http_get(url, getattr(cfg, "api_key", None))
        return (raw.get("result") or {}).get("payload_schema")
    except Exception:
        return None

def ensure_fields(schema: Dict[str, dict] | None, required: List[str]) -> Dict[str, bool]:
    ks = set((schema or {}).keys())
    return {k: (k in ks) for k in required}

def main():
    cfg = QdrantConfig.from_env()
    client = get_client(cfg)
    notes, chunks, edges = collection_names(cfg.prefix)
    names = {"notes": notes, "chunks": chunks, "edges": edges}

    report = {}
    ok_all = True
    for kind, col in names.items():
        sch = get_collection_payload_schema(client, cfg, col)
        checks = ensure_fields(sch, REQUIRED[kind])
        ok = all(checks.values())
        ok_all = ok_all and ok
        report[kind] = {
            "collection": col,
            "ok": ok,
            "missing": [k for k,v in checks.items() if not v],
            "present": [k for k,v in checks.items() if v],
        }

    print(json.dumps({"prefix": cfg.prefix, "ok": ok_all, "report": report}, ensure_ascii=False, indent=2))
    if not ok_all:
        sys.exit(1)

if __name__ == "__main__":
    main()