interface WeatherData {
  stationName: string;
  location: { lat: number; lon: number };
  currentTime: string;
  wind: {
    speed: number;
    direction: number;
    directionLabel: string;
    speed_1k: number;
    speed_3k: number;
  };
  wave: {
    height: number;
    maxHeight: number;
    period: number;
    direction: string;
  };
  temperature: {
    current: number;
    feelsLike: number;
  };
  pressure: number;
  visibility: number;
  salinity: number;
  astronomy?: {
    sunrise: string;
    sunset: string;
    moonrise: string;
    moonset: string;
    moonPhase: string;
    tidalRange: number;
  };
  alert?: string;
  forecast: WeatherForecast[];
}

interface WeatherForecast {
  time: string;
  hour: string;
  icon: string;
  temperature: number;
  windSpeed: number;
}

interface WeatherRightPanelProps {
  weatherData: WeatherData | null;
}

/** 풍속 등급 색상 */
function windColor(speed: number): string {
  if (speed >= 14) return '#ef4444';
  if (speed >= 10) return '#f97316';
  if (speed >= 6) return '#eab308';
  return '#22c55e';
}

/** 파고 등급 색상 */
function waveColor(height: number): string {
  if (height >= 3) return '#ef4444';
  if (height >= 2) return '#f97316';
  if (height >= 1) return '#eab308';
  return '#22c55e';
}

/** 풍향 텍스트 */
function windDirText(deg: number): string {
  const dirs = ['N', 'NNE', 'NE', 'ENE', 'E', 'ESE', 'SE', 'SSE', 'S', 'SSW', 'SW', 'WSW', 'W', 'WNW', 'NW', 'NNW'];
  return dirs[Math.round(deg / 22.5) % 16];
}

export function WeatherRightPanel({ weatherData }: WeatherRightPanelProps) {
  if (!weatherData) {
    return (
      <div className="flex flex-col bg-bg-1 border-l border-border overflow-hidden w-[320px] shrink-0">
        <div className="p-6 text-center">
          <p className="text-text-3 text-[13px] font-korean">지도에서 해양 지점을 클릭하세요</p>
        </div>
      </div>
    );
  }

  const { wind, wave, temperature, pressure, visibility, salinity, astronomy, alert, forecast } = weatherData;
  const wSpd = wind.speed;
  const wHgt = wave.height;
  const wTemp = temperature.current;
  const windDir = windDirText(wind.direction);

  return (
    <div className="flex flex-col bg-bg-1 border-l border-border overflow-hidden w-[320px] shrink-0">
      {/* 헤더 */}
      <div className="px-4 py-3 border-b border-border bg-bg-2">
        <div className="flex items-center gap-2 mb-1">
          <span className="text-[13px] font-bold text-primary-cyan font-korean">📍 {weatherData.stationName}</span>
          <span className="px-1.5 py-px text-[11px] rounded bg-primary-cyan/15 text-primary-cyan font-bold">기상예보관</span>
        </div>
        <p className="text-[11px] text-text-3 font-mono">
          {weatherData.location.lat.toFixed(2)}°N, {weatherData.location.lon.toFixed(2)}°E · {weatherData.currentTime}
        </p>
      </div>

      {/* 스크롤 콘텐츠 */}
      <div className="flex-1 overflow-auto" style={{ scrollbarWidth: 'thin', scrollbarColor: 'var(--bdL) transparent' }}>

        {/* ── 핵심 지표 3칸 카드 ── */}
        <div className="grid grid-cols-3 gap-1 px-3 py-2.5">
          <div className="text-center py-2.5 bg-bg-0 border border-border rounded-md">
            <div className="text-[20px] font-bold font-mono" style={{ color: windColor(wSpd) }}>{wSpd.toFixed(1)}</div>
            <div className="text-[11px] text-text-3 font-korean">풍속 (m/s)</div>
          </div>
          <div className="text-center py-2.5 bg-bg-0 border border-border rounded-md">
            <div className="text-[20px] font-bold font-mono" style={{ color: waveColor(wHgt) }}>{wHgt.toFixed(1)}</div>
            <div className="text-[11px] text-text-3 font-korean">파고 (m)</div>
          </div>
          <div className="text-center py-2.5 bg-bg-0 border border-border rounded-md">
            <div className="text-[20px] font-bold font-mono text-primary-cyan">{wTemp.toFixed(1)}</div>
            <div className="text-[11px] text-text-3 font-korean">수온 (°C)</div>
          </div>
        </div>

        {/* ── 바람 상세 ── */}
        <div className="px-3 py-2 border-b border-border">
          <div className="text-[11px] font-bold text-text-3 font-korean mb-2">🌬️ 바람 현황</div>
          <div className="flex items-center gap-3 mb-2">
            {/* 풍향 컴파스 */}
            <div className="relative w-[50px] h-[50px] shrink-0">
              <svg viewBox="0 0 50 50" className="w-full h-full">
                <circle cx="25" cy="25" r="22" fill="none" stroke="var(--bd)" strokeWidth="1" />
                <circle cx="25" cy="25" r="16" fill="none" stroke="var(--bd)" strokeWidth="0.5" strokeDasharray="2 2" />
                {['N', 'E', 'S', 'W'].map((d, i) => {
                  const angle = i * 90;
                  const rad = (angle - 90) * Math.PI / 180;
                  const x = 25 + 20 * Math.cos(rad);
                  const y = 25 + 20 * Math.sin(rad);
                  return <text key={d} x={x} y={y} textAnchor="middle" dominantBaseline="central" fill="var(--t3)" fontSize="6" fontWeight="bold">{d}</text>;
                })}
                {/* 풍향 화살표 */}
                <line
                  x1="25" y1="25"
                  x2={25 + 14 * Math.sin(wind.direction * Math.PI / 180)}
                  y2={25 - 14 * Math.cos(wind.direction * Math.PI / 180)}
                  stroke={windColor(wSpd)} strokeWidth="2" strokeLinecap="round"
                />
                <circle cx="25" cy="25" r="3" fill={windColor(wSpd)} />
              </svg>
            </div>
            <div className="flex-1 grid grid-cols-2 gap-x-3 gap-y-1.5 text-[11px]">
              <div className="flex justify-between"><span className="text-text-3">풍향</span><span className="text-text-1 font-mono font-bold text-[13px]">{windDir} {wind.direction}°</span></div>
              <div className="flex justify-between"><span className="text-text-3">기압</span><span className="text-text-1 font-mono text-[13px]">{pressure} hPa</span></div>
              <div className="flex justify-between"><span className="text-text-3">1k 최고</span><span className="font-mono text-[13px]" style={{ color: windColor(wind.speed_1k) }}>{Number(wind.speed_1k).toFixed(1)}</span></div>
              <div className="flex justify-between"><span className="text-text-3">3k 평균</span><span className="font-mono text-[13px]" style={{ color: windColor(wind.speed_3k) }}>{Number(wind.speed_3k).toFixed(1)}</span></div>
              <div className="col-span-2 flex justify-between"><span className="text-text-3">가시거리</span><span className="text-text-1 font-mono text-[13px]">{visibility} km</span></div>
            </div>
          </div>
          {/* 풍속 게이지 바 */}
          <div className="flex items-center gap-2">
            <div className="flex-1 h-[5px] bg-bg-3 rounded-full overflow-hidden">
              <div className="h-full rounded-full transition-all" style={{ width: `${Math.min(wSpd / 20 * 100, 100)}%`, background: windColor(wSpd) }} />
            </div>
            <span className="text-[11px] font-mono text-text-3 shrink-0">{wSpd.toFixed(1)}/20</span>
          </div>
        </div>

        {/* ── 파도 상세 ── */}
        <div className="px-3 py-2 border-b border-border">
          <div className="text-[11px] font-bold text-text-3 font-korean mb-2">🌊 파도</div>
          <div className="grid grid-cols-4 gap-1">
            <div className="text-center py-2 bg-bg-0 border border-border rounded">
              <div className="text-[14px] font-bold font-mono" style={{ color: waveColor(wHgt) }}>{wHgt.toFixed(1)}m</div>
              <div className="text-[10px] text-text-3">유의파고</div>
            </div>
            <div className="text-center py-2 bg-bg-0 border border-border rounded">
              <div className="text-[14px] font-bold font-mono text-status-red">{wave.maxHeight.toFixed(1)}m</div>
              <div className="text-[10px] text-text-3">최고파고</div>
            </div>
            <div className="text-center py-2 bg-bg-0 border border-border rounded">
              <div className="text-[14px] font-bold font-mono text-primary-cyan">{wave.period}s</div>
              <div className="text-[10px] text-text-3">주기</div>
            </div>
            <div className="text-center py-2 bg-bg-0 border border-border rounded">
              <div className="text-[14px] font-bold font-mono text-text-1">{wave.direction}</div>
              <div className="text-[10px] text-text-3">파향</div>
            </div>
          </div>
          {/* 파고 게이지 바 */}
          <div className="flex items-center gap-2 mt-1.5">
            <div className="flex-1 h-[5px] bg-bg-3 rounded-full overflow-hidden">
              <div className="h-full rounded-full transition-all" style={{ width: `${Math.min(wHgt / 5 * 100, 100)}%`, background: waveColor(wHgt) }} />
            </div>
            <span className="text-[11px] font-mono text-text-3 shrink-0">{wHgt.toFixed(1)}/5m</span>
          </div>
        </div>

        {/* ── 수온/공기 ── */}
        <div className="px-3 py-2 border-b border-border">
          <div className="text-[11px] font-bold text-text-3 font-korean mb-2">🌡️ 수온 · 공기</div>
          <div className="grid grid-cols-3 gap-1">
            <div className="text-center py-2 bg-bg-0 border border-border rounded">
              <div className="text-[14px] font-bold font-mono text-primary-cyan">{wTemp.toFixed(1)}°</div>
              <div className="text-[10px] text-text-3">수온</div>
            </div>
            <div className="text-center py-2 bg-bg-0 border border-border rounded">
              <div className="text-[14px] font-bold font-mono text-text-1">{temperature.feelsLike.toFixed(1)}°</div>
              <div className="text-[10px] text-text-3">기온</div>
            </div>
            <div className="text-center py-2 bg-bg-0 border border-border rounded">
              <div className="text-[14px] font-bold font-mono text-text-1">{salinity.toFixed(1)}</div>
              <div className="text-[10px] text-text-3">염분(PSU)</div>
            </div>
          </div>
        </div>

        {/* ── 시간별 예보 ── */}
        <div className="px-3 py-2 border-b border-border">
          <div className="text-[11px] font-bold text-text-3 font-korean mb-2">⏰ 시간별 예보</div>
          <div className="grid grid-cols-5 gap-1">
            {forecast.map((f, i) => (
              <div key={i} className="flex flex-col items-center py-2 px-1 bg-bg-0 border border-border rounded">
                <span className="text-[11px] text-text-3 mb-0.5">{f.hour}</span>
                <span className="text-lg mb-0.5">{f.icon}</span>
                <span className="text-[13px] font-bold text-text-1">{f.temperature}°</span>
                <span className="text-[11px] text-text-3 font-mono">{f.windSpeed}</span>
              </div>
            ))}
          </div>
        </div>

        {/* ── 천문/조석 ── */}
        {astronomy && (
          <div className="px-3 py-2 border-b border-border">
            <div className="text-[11px] font-bold text-text-3 font-korean mb-2">☀️ 천문 · 조석</div>
            <div className="grid grid-cols-4 gap-1">
              {[
                { icon: '🌅', label: '일출', value: astronomy.sunrise },
                { icon: '🌄', label: '일몰', value: astronomy.sunset },
                { icon: '🌙', label: '월출', value: astronomy.moonrise },
                { icon: '🌜', label: '월몰', value: astronomy.moonset },
              ].map((item, i) => (
                <div key={i} className="text-center py-2 bg-bg-0 border border-border rounded">
                  <div className="text-base mb-0.5">{item.icon}</div>
                  <div className="text-[10px] text-text-3">{item.label}</div>
                  <div className="text-[13px] font-bold font-mono text-text-1">{item.value}</div>
                </div>
              ))}
            </div>
            <div className="flex items-center gap-2 mt-1.5 px-2 py-1 bg-bg-0 border border-border rounded text-[11px]">
              <span className="text-sm">🌓</span>
              <span className="text-text-3">{astronomy.moonPhase}</span>
              <span className="ml-auto text-text-1 font-mono">조차 {astronomy.tidalRange}m</span>
            </div>
          </div>
        )}

        {/* ── 날씨 특보 ── */}
        {alert && (
          <div className="px-3 py-2">
            <div className="text-[11px] font-bold text-text-3 font-korean mb-2">🚨 날씨 특보</div>
            <div className="px-2.5 py-2 rounded border" style={{ background: 'rgba(239,68,68,.06)', borderColor: 'rgba(239,68,68,.2)' }}>
              <div className="flex items-center gap-2 text-[11px]">
                <span className="px-1.5 py-px rounded text-[11px] font-bold" style={{ background: 'rgba(239,68,68,.15)', color: 'var(--red)' }}>주의</span>
                <span className="text-text-1 font-korean">{alert}</span>
              </div>
            </div>
          </div>
        )}

      </div>
    </div>
  );
}
