#!/usr/bin/env python3
"""Ingest EU legal acts from eur-lex/CELLAR via the LegalActIngester engine.

For each act this downloads the German XHTML (CELLAR, eur-lex fallback), parses
it into articles + annexes with full authority metadata + citation edges
(services/legal_act_ingester.py), self-tests the parse, and uploads per unit.
Acts whose CELEX already exists are SKIPPED — there is no automatic re-ingest.

Usage (Mac Mini, with the RAG service reachable):
    python3 control-pipeline/scripts/ingest_eu_regulations.py --dry-run
    python3 control-pipeline/scripts/ingest_eu_regulations.py
"""

import argparse
import logging
import os
import sys
import time
from typing import TypedDict

import httpx

sys.path.insert(0, os.path.join(os.path.dirname(__file__), ".."))

from services.legal_act_ingester import (  # noqa: E402
    RegSpec,
    build_upload_units,
    download_act,
    parse_html,
    self_test,
    upload_unit,
)

logging.basicConfig(level=logging.INFO, format="%(asctime)s [%(levelname)s] %(message)s")
logger = logging.getLogger("ingest-eu")

RAG_URL = os.getenv("RAG_URL", "https://localhost:8097")
QDRANT_URL = os.getenv("QDRANT_URL", "http://localhost:6333")
COLLECTION = "bp_compliance_ce"
RUN_TAG = "2026-06-eu-v1"


class IngestResult(TypedDict):
    reg: str
    status: str
    chunks: int


def _rank(celex: str) -> str:
    """eu_directive for L-acts, eu_regulation otherwise (CELEX descriptor letter)."""
    return "eu_directive" if len(celex) > 5 and celex[5] == "L" else "eu_regulation"


def _spec(celex: str, name_de: str, short: str, version_date: str = "") -> RegSpec:
    return RegSpec(
        reg=short, celex=celex, name_de=name_de, collection=COLLECTION,
        version_date=version_date, legal_basis_rank=_rank(celex),
    )


# Acts this script ingests. The proven MVP acts (CRA / AI Act / DORA / NIS2 /
# MaschinenVO / DSGVO) are already in the corpus and get re-ingested via a
# separate, controlled step — not here.
SPECS = [
    _spec("32022L2464", "Corporate Sustainability Reporting Directive (CSRD)", "CSRD"),
    _spec("32024L1760", "Corporate Sustainability Due Diligence Directive (CSDDD)", "CSDDD"),
    _spec("32020R0852", "EU-Taxonomie-Verordnung", "EU Taxonomy"),
    _spec("32024R1183", "eIDAS 2.0 Verordnung (EU Digital Identity)", "eIDAS 2.0"),
    _spec("32023L0970", "Entgelttransparenz-Richtlinie", "Pay Transparency"),
    _spec("32022R2065", "Digital Services Act (DSA)", "DSA"),
]


def count_existing(celex: str) -> int:
    """Chunks already present for this CELEX (old or new tagging) — the skip guard."""
    with httpx.Client(timeout=60.0, verify=False) as client:
        resp = client.post(
            f"{QDRANT_URL}/collections/{COLLECTION}/points/count",
            json={"filter": {"must": [{"key": "celex", "match": {"value": celex}}]}, "exact": True},
        )
        resp.raise_for_status()
        return int(resp.json()["result"]["count"])


def ingest_one(spec: RegSpec, dry_run: bool) -> IngestResult:
    if (existing := count_existing(spec.celex)) > 0:
        logger.info("  already present: %d chunks — SKIPPING (no re-ingest)", existing)
        return {"reg": spec.reg, "status": "exists", "chunks": existing}

    try:
        html = download_act(spec.celex)
    except Exception as exc:  # noqa: BLE001 — log + continue with the next act
        logger.error("  download FAILED: %s", exc)
        return {"reg": spec.reg, "status": "download_failed", "chunks": 0}

    act = parse_html(html, spec.reg)
    passed, problems = self_test(act)
    logger.info("  parsed: %d articles, %d annexes", len(act.articles), len(act.annexes))
    if not passed:
        logger.error("  GATE FAIL — %s", "; ".join(problems))
        return {"reg": spec.reg, "status": "gate_failed", "chunks": 0}

    units = build_upload_units(act, spec, RUN_TAG)
    if dry_run:
        logger.info("  DRY RUN — would upload %d units", len(units))
        return {"reg": spec.reg, "status": "dry_run", "chunks": len(units)}

    chunks = 0
    with httpx.Client(timeout=600.0, verify=False) as client:
        for unit in units:
            chunks += upload_unit(client, RAG_URL, unit)
    logger.info("  uploaded: %d units, %d chunks", len(units), chunks)
    return {"reg": spec.reg, "status": "ok", "chunks": chunks}


def main() -> None:
    parser = argparse.ArgumentParser()
    parser.add_argument("--dry-run", action="store_true")
    args = parser.parse_args()

    logger.info("=" * 60)
    logger.info("LegalActIngester — %d acts | dry_run=%s", len(SPECS), args.dry_run)
    logger.info("=" * 60)

    results: list[IngestResult] = []
    for i, spec in enumerate(SPECS, 1):
        logger.info("\n[%d/%d] %s (CELEX %s)", i, len(SPECS), spec.name_de, spec.celex)
        results.append(ingest_one(spec, args.dry_run))
        if i < len(SPECS):
            time.sleep(1)

    logger.info("\n" + "=" * 60)
    for r in results:
        logger.info("  %-18s %-15s chunks=%s", r["reg"], r["status"].upper(), r["chunks"])
    total = sum(r["chunks"] for r in results if r["status"] == "ok")
    logger.info("\nTotal new chunks: %d", total)


if __name__ == "__main__":
    main()