"""
P18 — Erweiterter Banner-Block fuer die Email.

Rendert die Daten aus dem consent-tester die heute weggeworfen wurden:
  - 3-Phasen-Cookie-Tabelle (before_consent / after_reject / after_accept)
  - Banner-Quality-Score (completeness/correctness/violations)
  - Per-Category-Tracker-Listing
  - Violations-Liste mit Rechtsgrundlagen
"""

from __future__ import annotations


def _color_for(pct: int) -> str:
    return ("#16a34a" if pct >= 80 else
            "#d97706" if pct >= 50 else "#dc2626")


def _short_phase_label(key: str) -> str:
    return {
        "before_consent": "Vor Consent",
        "after_reject":   "Nach Ablehnung",
        "after_accept":   "Nach Annahme",
    }.get(key, key)


def _phase_color(key: str, cookie_count: int) -> str:
    if key == "before_consent":
        return "#16a34a" if cookie_count == 0 else "#dc2626"
    if key == "after_reject":
        return "#16a34a" if cookie_count <= 1 else "#d97706"
    return "#94a3b8"


def build_banner_deep_html(banner_result: dict | None) -> str:
    """Render: Banner-Quality + Phases + Violations.

    Konsumiert das volle consent-tester-Response. Komplementiert
    `build_provider_list_html` (das nur Summary + TCF-Vendor-Tabelle macht).
    """
    if not banner_result:
        return ""

    parts: list[str] = [
        '<div style="font-family:-apple-system,BlinkMacSystemFont,sans-serif;'
        'max-width:700px;margin:0 auto 16px;padding:14px 18px;'
        'background:#fff;border:1px solid #cbd5e1;border-radius:8px">'
        '<h3 style="margin:0 0 12px;font-size:14px;color:#0f172a">'
        'Cookie-Banner — technische Analyse</h3>'
    ]

    # 1) Quality-Score-Cards
    compl = banner_result.get("completeness_pct")
    corr = banner_result.get("correctness_pct")
    summary = banner_result.get("summary") or {}
    n_critical = summary.get("critical", 0)
    n_high = summary.get("high", 0)
    if compl is not None or corr is not None:
        parts.append(
            '<table style="width:100%;border-collapse:separate;'
            'border-spacing:6px;margin-bottom:10px"><tr>'
        )
        if compl is not None:
            c = _color_for(int(compl))
            parts.append(
                f'<td style="width:33%;padding:8px 10px;background:#f8fafc;'
                f'border-radius:5px;border-left:3px solid {c}">'
                f'<div style="font-size:10px;color:#64748b;text-transform:uppercase">'
                f'Vollstaendigkeit</div>'
                f'<div style="font-size:18px;font-weight:700;color:{c}">{compl}%</div>'
                f'</td>'
            )
        if corr is not None:
            c = _color_for(int(corr))
            parts.append(
                f'<td style="width:33%;padding:8px 10px;background:#f8fafc;'
                f'border-radius:5px;border-left:3px solid {c}">'
                f'<div style="font-size:10px;color:#64748b;text-transform:uppercase">'
                f'Korrektheit</div>'
                f'<div style="font-size:18px;font-weight:700;color:{c}">{corr}%</div>'
                f'</td>'
            )
        viol_c = ("#dc2626" if n_critical + n_high > 0 else
                  "#d97706" if (summary.get("total_violations") or 0) > 0 else
                  "#16a34a")
        parts.append(
            f'<td style="width:33%;padding:8px 10px;background:#f8fafc;'
            f'border-radius:5px;border-left:3px solid {viol_c}">'
            f'<div style="font-size:10px;color:#64748b;text-transform:uppercase">'
            f'Verstoesse</div>'
            f'<div style="font-size:18px;font-weight:700;color:{viol_c}">'
            f'{summary.get("total_violations", 0)}'
            f'<span style="font-size:11px;color:#64748b;margin-left:6px">'
            f'(crit:{n_critical} high:{n_high})</span></div></td>'
        )
        parts.append('</tr></table>')

    # 2) 3-Phasen-Tabelle
    phases = banner_result.get("phases") or {}
    if phases:
        parts.append(
            '<div style="font-size:11px;color:#475569;margin:8px 0 4px;'
            'font-weight:600">Cookie-Setzungen pro Phase '
            '(echter Browser-Test):</div>'
            '<table style="width:100%;border-collapse:collapse;font-size:11px;'
            'margin-bottom:10px;border:1px solid #e2e8f0">'
            '<thead><tr style="background:#f1f5f9;color:#475569;text-align:left">'
            '<th style="padding:5px 8px">Phase</th>'
            '<th style="padding:5px 8px;text-align:center">Cookies</th>'
            '<th style="padding:5px 8px;text-align:center">Tracker</th>'
            '<th style="padding:5px 8px">Auffaelligkeiten</th>'
            '</tr></thead><tbody>'
        )
        for key in ("before_consent", "after_reject", "after_accept"):
            ph = phases.get(key) or {}
            if not isinstance(ph, dict): continue
            cookies = ph.get("cookies") or []
            trackers = ph.get("tracking_services") or []
            new_track = ph.get("new_tracking") or []
            violations = ph.get("violations") or []
            undoc = ph.get("undocumented") or []
            color = _phase_color(key, len(cookies))
            issues_parts = []
            if violations: issues_parts.append(f"{len(violations)} Verstoss")
            if new_track:  issues_parts.append(f"{len(new_track)} neue Tracker")
            if undoc:      issues_parts.append(f"{len(undoc)} undokumentiert")
            issues_str = ", ".join(issues_parts) or "—"
            parts.append(
                f'<tr style="border-top:1px solid #e2e8f0">'
                f'<td style="padding:5px 8px;color:#1e293b;font-weight:600">'
                f'<span style="display:inline-block;width:6px;height:6px;'
                f'border-radius:50%;background:{color};margin-right:6px"></span>'
                f'{_short_phase_label(key)}</td>'
                f'<td style="padding:5px 8px;text-align:center;color:{color};'
                f'font-weight:600">{len(cookies)}</td>'
                f'<td style="padding:5px 8px;text-align:center">{len(trackers)}</td>'
                f'<td style="padding:5px 8px;color:#475569">{issues_str}</td>'
                f'</tr>'
            )
        parts.append('</tbody></table>')

    # 3) Per-Category-Tracker
    cats = banner_result.get("category_tests") or []
    if cats:
        non_essential = [c for c in cats if c.get("category") != "necessary"]
        if non_essential:
            parts.append(
                '<div style="font-size:11px;color:#475569;margin:8px 0 4px;'
                'font-weight:600">Provider-Listing pro Banner-Kategorie:</div>'
                '<table style="width:100%;border-collapse:collapse;font-size:11px;'
                'margin-bottom:10px;border:1px solid #e2e8f0">'
                '<thead><tr style="background:#f1f5f9;color:#475569;text-align:left">'
                '<th style="padding:5px 8px">Kategorie</th>'
                '<th style="padding:5px 8px;text-align:center">Anbieter</th>'
                '<th style="padding:5px 8px">Hinweis</th>'
                '</tr></thead><tbody>'
            )
            for c in non_essential:
                n = len(c.get("tracking_services") or [])
                label = c.get("category_label") or c.get("category", "?")
                if n == 0:
                    color = "#dc2626"
                    hint = ("Keine Anbieter sichtbar — Nutzer kann nicht "
                            "informiert einwilligen (Art. 7 DSGVO)")
                else:
                    color = "#16a34a"
                    hint = ""
                parts.append(
                    f'<tr style="border-top:1px solid #e2e8f0">'
                    f'<td style="padding:5px 8px">{label}</td>'
                    f'<td style="padding:5px 8px;text-align:center;color:{color};'
                    f'font-weight:600">{n}</td>'
                    f'<td style="padding:5px 8px;color:#dc2626;font-size:10px">'
                    f'{hint}</td></tr>'
                )
            parts.append('</tbody></table>')

    # 4) Violations mit Rechtsgrundlage
    violations = (banner_result.get("banner_checks") or {}).get("violations", [])
    if violations:
        parts.append(
            '<div style="font-size:11px;color:#475569;margin:8px 0 4px;'
            'font-weight:600">Erkannte Banner-Verstoesse:</div>'
            '<ul style="margin:0 0 8px 18px;padding:0;font-size:11px;color:#1e293b">'
        )
        for v in violations[:8]:
            sev = (v.get("severity") or "MEDIUM").upper()
            sev_c = ("#dc2626" if sev in ("CRITICAL", "HIGH") else
                     "#d97706" if sev == "MEDIUM" else "#94a3b8")
            parts.append(
                f'<li style="margin-bottom:6px">'
                f'<span style="display:inline-block;background:{sev_c};color:#fff;'
                f'font-size:9px;padding:1px 5px;border-radius:3px;margin-right:6px">'
                f'{sev}</span>{v.get("text", "")[:200]}'
                f'<div style="font-size:10px;color:#94a3b8;margin-top:2px;'
                f'font-style:italic">Quelle: {v.get("legal_ref", "")}</div></li>'
            )
        parts.append('</ul>')

    parts.append('</div>')
    return "".join(parts)