"""Snapshot-getriebene Doc-Check-Endpoints (kein Re-Crawl).

Cookie-Library-Abgleich + v3-Doc-Agenten (Impressum/DSE/AGB …) laufen auf den
gespeicherten Snapshot-Texten. Ausgelagert aus agent_compliance_check_routes.py
(LOC-Budget). Gleicher Router-Prefix → identische Pfade, keine Contract-Änderung.
"""

from __future__ import annotations

import logging

from fastapi import APIRouter, HTTPException

logger = logging.getLogger(__name__)

router = APIRouter(prefix="/compliance/agent", tags=["agent-snapshots"])


async def _run_doc_agent(snapshot_id: str, doc_type: str, agent_id: str) -> dict:
    """Lädt den Snapshot, baut den AgentInput für doc_type und läuft den
    registrierten v3-Doc-Agenten. Geteilt von impressum/dse/agb (kein Re-Crawl)."""
    from database import SessionLocal
    from compliance.services.check_snapshot import load_snapshot
    from compliance.services.specialist_agents import REGISTRY, AgentInput
    from compliance.api.agent_check._agent_outputs import doc_input_from_snapshot
    db = SessionLocal()
    try:
        snap = load_snapshot(db, snapshot_id)
        if not snap:
            raise HTTPException(status_code=404, detail="snapshot not found")
        agent_input = doc_input_from_snapshot(snap, doc_type)
        if not agent_input:
            return {"findings": [], "recommendations": [], "mc_coverage": [],
                    "notes": f"kein {doc_type}-Text im Snapshot", "confidence": 0.0}
        out = await REGISTRY.get(agent_id).evaluate(AgentInput(**agent_input))
        result = out.model_dump(mode="json")
        # B: Cross-Doc-Reconciliation — Pflichten, die in einem ANDEREN Dokument
        # erfüllt sind (z.B. § 36 VSBG / OS-Link in AGB/Legal), nicht als Finding
        # zeigen. Konservative Allowlist in cross_doc_reconcile.
        from compliance.services.cross_doc_reconcile import reconcile_doc_findings
        other = [(e.get("doc_type"), e.get("text") or e.get("content") or "")
                 for e in (snap.get("doc_entries") or [])
                 if e.get("doc_type") != doc_type
                 and (e.get("text") or e.get("content"))]
        reconcile_doc_findings(result, agent_id, other)
        return result
    finally:
        db.close()


@router.get("/snapshots/{snapshot_id}/cookie-check")
async def snapshot_cookie_check(snapshot_id: str):
    """Pro-Cookie-Abgleich der Snapshot-Vendors gegen cookie_knowledge_db."""
    from database import SessionLocal
    from compliance.services.check_snapshot import load_snapshot
    from compliance.services.cookie_library_check import (
        analyze_cookies, load_big_library,
    )
    from compliance.services.cookie_storage_inventory import (
        build_storage_inventory, storage_transparency_finding,
    )
    from compliance.services.cookie_compliance_audit import (
        audit_cookie_compliance,
    )
    db = SessionLocal()
    try:
        snap = load_snapshot(db, snapshot_id)
        if not snap:
            raise HTTPException(status_code=404, detail="snapshot not found")
        vendors = snap.get("cmp_vendors") or []
        names = [c.get("name", "")
                 for v in vendors for c in (v.get("cookies") or [])]
        big = load_big_library(db, names)
        out = analyze_cookies(vendors, big)
        inv = build_storage_inventory(vendors)
        tf = storage_transparency_finding(inv)
        if tf:
            out["findings"].insert(0, tf)
            out["summary"]["findings"] = len(out["findings"])
        out["storage_inventory"] = inv
        # ② Documentation Drift: Cookie-Richtlinie (Text) vs. Browser-Realität.
        docs = snap.get("doc_entries") or []
        cookie_text = next(
            (e.get("text") or e.get("content") or "" for e in docs
             if e.get("doc_type") in ("cookie", "cookie_richtlinie", "cookies")),
            "",
        )
        out["drift"] = audit_cookie_compliance(
            db, cookie_text, snap.get("banner_result"))
        return out
    finally:
        db.close()


@router.get("/snapshots/{snapshot_id}/impressum-check")
async def snapshot_impressum_check(snapshot_id: str):
    """Impressum-Analyse (v3 ImpressumAgent) auf dem gespeicherten Text."""
    return await _run_doc_agent(snapshot_id, "impressum", "impressum")


@router.get("/snapshots/{snapshot_id}/dse-check")
async def snapshot_dse_check(snapshot_id: str):
    """DSE-Analyse (kuratierter DSEAgent, Art. 13/14) auf dem gespeicherten Text."""
    return await _run_doc_agent(snapshot_id, "dse", "dse")


@router.get("/snapshots/{snapshot_id}/agb-check")
async def snapshot_agb_check(snapshot_id: str):
    """AGB-Analyse (kuratierter AGBAgent, §§ 305 ff. BGB) auf dem gespeicherten Text."""
    return await _run_doc_agent(snapshot_id, "agb", "agb")