import React from 'react';
import { ShieldAlert, AlertTriangle } from 'lucide-react';
import { enumLabel } from '../../../utils/i18n-enums';
import type { FindingAccent } from '../sections/FindingCard';
import {
  FindingCardBox, FindingIconBox, FindingBody,
  FindingEyebrow, FindingHeadline, FindingSourceRow,
  ScoresBlock, ScoreLine, ScoreLineName, ScoreLineBar, ScoreLineFill, ScoreLineNum,
} from '../styles';
import { SectionDivider } from '../sections/SectionDivider';

const ACCENT_HEX: Record<FindingAccent, string> = {
  critical: '#ef4444',
  warning: '#f97316',
  info: '#3b82f6',
  success: '#22c55e',
  neutral: '#94a3b8',
  violet: '#7fd0d4',
};

function trustAccent(trust: number): FindingAccent {
  if (trust >= 70) return 'success';
  if (trust >= 40) return 'warning';
  return 'critical';
}

function barColor(score: number): string {
  return score >= 70 ? '#22c55e' : score >= 40 ? '#f97316' : '#ef4444';
}

export function renderSourceEditorial(data: any, isRo: boolean) {
  if (!data) return null;
  const trust = data.trust_score ?? 0;
  const accent = trustAccent(trust);
  const accentHex = ACCENT_HEX[accent];

  const verdictLabel = enumLabel(data.verdict || '').replace(/_/g, ' ');
  const riskLevel = enumLabel(data.risk_level || '');

  const pub = data.publication || {};
  const auth = data.author || {};
  const plat = data.platform || {};
  const dom = data.domain || {};
  const formula = data.formula || {};
  void formula;

  const headline = isRo
    ? `${verdictLabel} — încredere ${trust}/100${riskLevel ? ` · risc ${riskLevel.toLowerCase()}` : ''}`
    : `${verdictLabel} — trust ${trust}/100${riskLevel ? ` · ${riskLevel.toLowerCase()} risk` : ''}`;

  const axes = [
    {
      name: isRo ? 'Publicație' : 'Publication',
      score: pub.score ?? 0,
      weight: Math.round((formula.publication_weight ?? 0.35) * 100),
    },
    {
      name: isRo ? 'Autor' : 'Author',
      score: auth.score ?? 0,
      weight: Math.round((formula.author_weight ?? 0.25) * 100),
    },
    {
      name: isRo ? 'Platformă' : 'Platform',
      score: plat.score ?? 0,
      weight: Math.round((formula.platform_weight ?? 0.15) * 100),
    },
    {
      name: isRo ? 'Domeniu' : 'Domain',
      score: dom.score ?? 0,
      weight: Math.round((formula.domain_weight ?? 0.25) * 100),
    },
  ];

  const flags: string[] = [];
  if (!pub.confirmed) flags.push(isRo ? 'fără publicație confirmată' : 'no confirmed publication');
  if (!auth.confirmed) flags.push(isRo ? 'fără autor identificat' : 'no identified author');
  if (!dom.name || dom.name === 'N/A') flags.push(isRo ? 'fără domeniu' : 'no domain');
  if (data.red_flags?.length) flags.push(...data.red_flags.map((f: string) => f.replace(/_/g, ' ').toLowerCase()));

  return (
    <>
      <SectionDivider
        label={isRo ? 'Evaluarea sursei' : 'Source assessment'}
        count={`${trust} / 100 · ${verdictLabel.toLowerCase()}`}
      />
      <FindingCardBox>
        <FindingIconBox accent={accentHex} lg>
          <ShieldAlert size={20} strokeWidth={2} />
        </FindingIconBox>
        <FindingBody>
          <FindingEyebrow>{verdictLabel}</FindingEyebrow>
          <FindingHeadline>{headline}</FindingHeadline>

          <ScoresBlock style={{ marginTop: 4 }}>
            {axes.map((ax, i) => (
              <ScoreLine key={ax.name}>
                <ScoreLineName>{ax.name}</ScoreLineName>
                <ScoreLineBar>
                  <ScoreLineFill width={ax.score} color={barColor(ax.score)} delay={400 + i * 60} />
                </ScoreLineBar>
                <ScoreLineNum>{ax.score}</ScoreLineNum>
              </ScoreLine>
            ))}
          </ScoresBlock>

          {flags.length > 0 && (
            <FindingSourceRow>
              <AlertTriangle size={13} strokeWidth={2} />
              {flags.map((f, idx) => (
                <React.Fragment key={idx}>
                  {idx > 0 && <span className="sep">·</span>}
                  <span>{f}</span>
                </React.Fragment>
              ))}
            </FindingSourceRow>
          )}
        </FindingBody>
      </FindingCardBox>
    </>
  );
}

export function renderSourceDetail(data: any) {
  const isRo = (typeof document !== 'undefined' && document.documentElement.lang || '').toLowerCase().startsWith('ro');
  return <>{renderSourceEditorial(data, isRo)}</>;
}

export function renderSourceSummary(data: any) {
  if (!data) return null;
  const trust = data.trust_score ?? 0;
  return (
    <span style={{ fontSize: 12, color: 'var(--fg-secondary)' }}>
      Trust {trust}% · {enumLabel(data.verdict || '').replace(/_/g, ' ')}
    </span>
  );
}