#!/usr/bin/env python3
# -*- coding: utf-8 -*-
from __future__ import annotations

import json
import os
from collections import Counter, defaultdict
from typing import Dict, Tuple

from qdrant_client.http import models as rest
from app.core.qdrant import QdrantConfig, get_client


def _rel(payload: dict) -> str:
    return payload.get("relation") or payload.get("kind") or "edge"


def _count_by_kind(edges_payloads):
    c = Counter()
    for pl in edges_payloads:
        c[_rel(pl)] += 1
    return dict(c)


def _is_explicit(pl: dict) -> bool:
    rid = (pl.get("rule_id") or "").lower()
    return rid.startswith("explicit:") or rid.startswith("inline:") or rid.startswith("callout:")


def _is_default(pl: dict) -> bool:
    rid = (pl.get("rule_id") or "").lower()
    return rid.startswith("edge_defaults:")


def _is_callout(pl: dict) -> bool:
    rid = (pl.get("rule_id") or "").lower()
    return rid.startswith("callout:")


def _is_inline(pl: dict) -> bool:
    rid = (pl.get("rule_id") or "").lower()
    return rid.startswith("inline:")


def _scroll_all(client, col_name: str):
    points = []
    next_page = None
    while True:
        res, next_page = client.scroll(
            collection_name=col_name,
            with_payload=True,
            with_vectors=False,
            limit=2048,
            offset=next_page,
        )
        points.extend(res)
        if next_page is None:
            break
    return points


def main():
    cfg = QdrantConfig.from_env()
    client = get_client(cfg)
    prefix = os.environ.get("COLLECTION_PREFIX", cfg.prefix)

    cols = {
        "notes": f"{prefix}_notes",
        "chunks": f"{prefix}_chunks",
        "edges": f"{prefix}_edges",
    }

    # 1) Alle Edges lesen
    edge_pts = _scroll_all(client, cols["edges"])
    edges_payloads = [p.payload or {} for p in edge_pts]

    # 2) Summen & Klassifizierungen
    edges_by_kind = _count_by_kind(edges_payloads)
    explicit_total = sum(1 for pl in edges_payloads if _is_explicit(pl))
    defaults_total = sum(1 for pl in edges_payloads if _is_default(pl))
    callout_total = sum(1 for pl in edges_payloads if _is_callout(pl))
    inline_total = sum(1 for pl in edges_payloads if _is_inline(pl))

    # 3) Per-Note-Checks
    per_note = {}
    # chunks je Note
    chunk_counts: Dict[str, int] = defaultdict(int)
    for ch in _scroll_all(client, cols["chunks"]):
        nid = (ch.payload or {}).get("note_id")
        if nid:
            chunk_counts[nid] += 1

    # edges je Note
    edges_by_note: Dict[str, list] = defaultdict(list)
    for pl in edges_payloads:
        nid = pl.get("note_id")
        if nid:
            edges_by_note[nid].append(pl)

    multi_callout_detected = False
    dup_seen = set()
    has_duplicates = False

    for nid, pls in edges_by_note.items():
        by_kind = Counter(_rel(pl) for pl in pls)
        belongs_to = by_kind.get("belongs_to", 0)
        next_cnt = by_kind.get("next", 0)
        prev_cnt = by_kind.get("prev", 0)
        chunks = chunk_counts.get(nid, 0)

        # Duplikate
        for pl in pls:
            key = (
                str(pl.get("source_id") or ""),
                str(pl.get("target_id") or ""),
                str(_rel(pl)),
                str(pl.get("rule_id") or ""),
            )
            if key in dup_seen:
                has_duplicates = True
            dup_seen.add(key)

        # Mehrfach-Callouts: gleicher chunk_id + relation + rule_id, mehrere Targets
        call_key_counter = Counter(
            (pl.get("chunk_id"), _rel(pl), pl.get("rule_id"))
            for pl in pls
            if _is_callout(pl)
        )
        if any(v >= 2 for v in call_key_counter.values()):
            multi_callout_detected = True

        per_note[nid] = {
            "chunks": chunks,
            "belongs_to": belongs_to,
            "next": next_cnt,
            "prev": prev_cnt,
            "checks": {
                "belongs_to_equals_chunks": (belongs_to == chunks),
                "next_prev_match": (next_cnt == prev_cnt == max(0, chunks - 1)),
            },
        }

    out = {
        "prefix": prefix,
        "counts": {
            "notes": client.count(collection_name=cols["notes"], exact=True).count,
            "chunks": client.count(collection_name=cols["chunks"], exact=True).count,
            "edges": client.count(collection_name=cols["edges"], exact=True).count,
            "edges_by_kind": edges_by_kind,
            "explicit_total": explicit_total,
            "defaults_total": defaults_total,
            "callout_total": callout_total,
            "inline_total": inline_total,
        },
        "per_note_checks": per_note,
        "multi_callout_detected": multi_callout_detected,
        "has_duplicates": has_duplicates,
    }
    print(json.dumps(out, ensure_ascii=False, indent=2))


if __name__ == "__main__":
    main()