"""B13 wiring — Widerrufsbelehrung-Reachability.

Hängt sich an `state["extra_findings"]` an und rendert einen
eigenständigen V2-HTML-Block (`widerruf_reach_html`).
"""

from __future__ import annotations

import html
import logging

from compliance.services.widerrufsbelehrung_reachability_check import (
    check_widerrufsbelehrung_reachability,
)

logger = logging.getLogger(__name__)


def run_b13(state: dict) -> None:
    new = check_widerrufsbelehrung_reachability(state)
    if not new:
        return
    extras = state.get("extra_findings") or []
    extras.extend(new)
    state["extra_findings"] = extras
    state["widerruf_reach_html"] = _render(new)
    logger.info("B13 widerruf-reach: %d finding(s)", len(new))


def _render(findings: list[dict]) -> str:
    cards = []
    for f in findings:
        sev = (f.get("severity") or "").upper()
        color = "#dc2626" if sev == "HIGH" else "#f59e0b"
        scope_tag = f.get("b2c_scope") or ""
        scope_html = (
            f"<span style='display:inline-block;background:#fef3c7;"
            f"color:#92400e;font-size:10px;padding:1px 6px;border-radius:999px;"
            f"margin-left:6px;'>Scope: {html.escape(scope_tag)}</span>"
            if scope_tag else ""
        )
        cards.append(
            f"<div style='margin:12px 0;padding:14px;background:#fff;"
            f"border-left:3px solid {color};border-radius:4px;'>"
            f"<div style='font-weight:600;color:{color};font-size:14px;'>"
            f"{sev} · {html.escape(f.get('check_id') or '')}{scope_html}</div>"
            f"<div style='font-size:14px;margin-top:4px;'>"
            f"<strong>{html.escape(f.get('title') or '')}</strong></div>"
            f"<div style='font-size:12px;color:#64748b;margin-top:2px;'>"
            f"{html.escape(f.get('norm') or '')}</div>"
            f"<div style='font-size:12px;color:#475569;margin-top:6px;'>"
            f"<em>{html.escape(f.get('evidence') or '')}</em></div>"
            f"<div style='font-size:13px;margin-top:8px;background:#dcfce7;"
            f"padding:8px 10px;border-radius:4px;'>"
            f"<strong>→ Empfehlung:</strong> "
            f"{html.escape(f.get('action') or '')}</div>"
            "</div>"
        )
    return (
        "<div style='margin:24px 0;padding:16px;border-left:4px solid #dc2626;"
        "background:#fef2f2;border-radius:4px;'>"
        "<h2 style='margin:0 0 8px;color:#7f1d1d;font-size:16px;'>"
        "📜 Widerrufsbelehrung-Reachability (B2C-Pflicht)"
        "</h2>"
        + "".join(cards) +
        "</div>"
    )