// ButtonContent.tsx — WING-OPS Button 컴포넌트 상세 페이지 (다크/라이트 테마 지원)

import type { DesignTheme } from './designTheme';

// ---------- 타입 ----------

interface ButtonSizeRow {
  label: string;
  heightClass: string;
  heightPx: number;
  px: number;
}

interface ButtonVariantStyle {
  bg: string;
  text: string;
  border?: string;
}

interface ButtonStateRow {
  state: string;
  accent: ButtonVariantStyle;
  primary: ButtonVariantStyle;
  secondary: ButtonVariantStyle;
  tertiary: ButtonVariantStyle;
  tertiaryFilled: ButtonVariantStyle;
}

// ---------- 데이터 ----------

const BUTTON_SIZES: ButtonSizeRow[] = [
  { label: 'XLarge (56)', heightClass: 'h-14', heightPx: 56, px: 24 },
  { label: 'Large (48)', heightClass: 'h-12', heightPx: 48, px: 20 },
  { label: 'Medium (44)', heightClass: 'h-11', heightPx: 44, px: 16 },
  { label: 'Small (32)', heightClass: 'h-8', heightPx: 32, px: 12 },
  { label: 'XSmall (24)', heightClass: 'h-6', heightPx: 24, px: 8 },
];

const VARIANTS = ['Accent', 'Primary', 'Secondary', 'Tertiary', 'Tertiary (filled)'] as const;

const getDarkStateRows = (): ButtonStateRow[] => [
  {
    state: 'Default',
    accent:         { bg: '#ef4444', text: '#fff' },
    primary:        { bg: '#1a1a2e', text: '#fff' },
    secondary:      { bg: '#6b7280', text: '#fff' },
    tertiary:       { bg: 'transparent', text: '#c2c6d6', border: '#6b7280' },
    tertiaryFilled: { bg: '#374151', text: '#c2c6d6' },
  },
  {
    state: 'Hover',
    accent:         { bg: '#dc2626', text: '#fff' },
    primary:        { bg: '#2d2d44', text: '#fff' },
    secondary:      { bg: '#7c8393', text: '#fff' },
    tertiary:       { bg: 'rgba(255,255,255,0.05)', text: '#c2c6d6', border: '#9ca3af' },
    tertiaryFilled: { bg: '#4b5563', text: '#c2c6d6' },
  },
  {
    state: 'Pressed',
    accent:         { bg: '#b91c1c', text: '#fff' },
    primary:        { bg: '#3d3d5c', text: '#fff' },
    secondary:      { bg: '#9ca3af', text: '#fff' },
    tertiary:       { bg: 'rgba(255,255,255,0.1)', text: '#c2c6d6', border: '#9ca3af' },
    tertiaryFilled: { bg: '#6b7280', text: '#c2c6d6' },
  },
  {
    state: 'Disabled',
    accent:         { bg: 'rgba(239,68,68,0.3)', text: 'rgba(255,255,255,0.5)' },
    primary:        { bg: 'rgba(26,26,46,0.5)', text: 'rgba(255,255,255,0.4)' },
    secondary:      { bg: 'rgba(107,114,128,0.3)', text: 'rgba(255,255,255,0.4)' },
    tertiary:       { bg: 'transparent', text: 'rgba(255,255,255,0.3)', border: 'rgba(107,114,128,0.3)' },
    tertiaryFilled: { bg: 'rgba(55,65,81,0.3)', text: 'rgba(255,255,255,0.3)' },
  },
];

const getLightStateRows = (): ButtonStateRow[] => [
  {
    state: 'Default',
    accent:         { bg: '#ef4444', text: '#fff' },
    primary:        { bg: '#1a1a2e', text: '#fff' },
    secondary:      { bg: '#d1d5db', text: '#374151' },
    tertiary:       { bg: 'transparent', text: '#374151', border: '#d1d5db' },
    tertiaryFilled: { bg: '#e5e7eb', text: '#374151' },
  },
  {
    state: 'Hover',
    accent:         { bg: '#dc2626', text: '#fff' },
    primary:        { bg: '#2d2d44', text: '#fff' },
    secondary:      { bg: '#bcc0c7', text: '#374151' },
    tertiary:       { bg: 'rgba(0,0,0,0.03)', text: '#374151', border: '#9ca3af' },
    tertiaryFilled: { bg: '#d1d5db', text: '#374151' },
  },
  {
    state: 'Pressed',
    accent:         { bg: '#b91c1c', text: '#fff' },
    primary:        { bg: '#3d3d5c', text: '#fff' },
    secondary:      { bg: '#9ca3af', text: '#374151' },
    tertiary:       { bg: 'rgba(0,0,0,0.06)', text: '#374151', border: '#6b7280' },
    tertiaryFilled: { bg: '#bcc0c7', text: '#374151' },
  },
  {
    state: 'Disabled',
    accent:         { bg: 'rgba(239,68,68,0.3)', text: 'rgba(255,255,255,0.5)' },
    primary:        { bg: 'rgba(26,26,46,0.3)', text: 'rgba(255,255,255,0.5)' },
    secondary:      { bg: 'rgba(209,213,219,0.5)', text: 'rgba(55,65,81,0.4)' },
    tertiary:       { bg: 'transparent', text: 'rgba(55,65,81,0.3)', border: 'rgba(209,213,219,0.5)' },
    tertiaryFilled: { bg: 'rgba(229,231,235,0.5)', text: 'rgba(55,65,81,0.3)' },
  },
];

// ---------- Props ----------

interface ButtonContentProps {
  theme: DesignTheme;
}

// ---------- 헬퍼 ----------

function getVariantStyle(row: ButtonStateRow, variantIndex: number): ButtonVariantStyle {
  const keys: (keyof Omit<ButtonStateRow, 'state'>)[] = [
    'accent',
    'primary',
    'secondary',
    'tertiary',
    'tertiaryFilled',
  ];
  return row[keys[variantIndex]];
}

// ---------- 컴포넌트 ----------

export const ButtonContent = ({ theme }: ButtonContentProps) => {
  const t = theme;
  const isDark = t.mode === 'dark';

  const sectionCardBg = isDark ? 'rgba(255,255,255,0.03)' : '#f5f5f5';
  const dividerColor = isDark ? 'rgba(255,255,255,0.08)' : '#e5e7eb';
  const badgeBg = isDark ? '#4a5568' : '#6b7280';
  const annotationColor = isDark ? '#f87171' : '#ef4444';
  const buttonDarkBg = isDark ? '#e2e8f0' : '#1a1a2e';
  const buttonDarkText = isDark ? '#1a1a2e' : '#fff';

  const stateRows = isDark ? getDarkStateRows() : getLightStateRows();

  return (
    <div className="p-12" style={{ color: t.textPrimary }}>
      <div style={{ maxWidth: '64rem' }}>

        {/* ── 섹션 1: 헤더 ── */}
        <div
          className="pb-10 mb-12 border-b border-solid"
          style={{ borderColor: dividerColor }}
        >
          <p
            className="font-mono text-sm uppercase tracking-widest mb-3"
            style={{ color: t.textAccent }}
          >
            Components
          </p>
          <h1
            className="text-4xl font-bold mb-4"
            style={{ color: t.textPrimary }}
          >
            Button
          </h1>
          <p
            className="text-lg mb-1"
            style={{ color: t.textSecondary }}
          >
            사용자의 의도를 명확하게 전달하고, 행동을 유도합니다.
          </p>
          <p
            className="text-lg"
            style={{ color: t.textSecondary }}
          >
            버튼의 형태와 색은 우선순위를 시각적으로 구분합니다.
          </p>
        </div>

        {/* ── 섹션 2: Anatomy ── */}
        <div className="mb-16">
          <h2
            className="text-2xl font-bold mb-8"
            style={{ color: t.textPrimary }}
          >
            Anatomy
          </h2>

          {/* Anatomy 카드 */}
          <div
            className="rounded-xl p-10 mb-8"
            style={{ backgroundColor: sectionCardBg }}
          >
            <div className="flex flex-row items-start gap-16 justify-center">

              {/* 왼쪽: 텍스트 + 아이콘 버튼 */}
              <div className="flex flex-col items-center gap-6">
                <div className="relative">
                  {/* 버튼 본체 */}
                  <div
                    className="relative inline-flex items-center gap-2 px-5 rounded-md"
                    style={{
                      height: '44px',
                      backgroundColor: buttonDarkBg,
                      color: buttonDarkText,
                      fontSize: '14px',
                      fontWeight: 600,
                    }}
                  >
                    {/* Container 번호 — 테두리 점선 */}
                    <span
                      className="absolute inset-0 rounded-md pointer-events-none"
                      style={{
                        border: `1.5px dashed ${isDark ? 'rgba(255,255,255,0.25)' : 'rgba(0,0,0,0.20)'}`,
                      }}
                    />
                    <span>레이블</span>
                    <span className="font-bold">+</span>

                    {/* 번호 뱃지 — Container (1) */}
                    <span
                      className="absolute flex items-center justify-center rounded-full text-white font-bold"
                      style={{
                        width: '22px',
                        height: '22px',
                        fontSize: '10px',
                        backgroundColor: badgeBg,
                        top: '-12px',
                        left: '-12px',
                      }}
                    >
                      1
                    </span>

                    {/* 번호 뱃지 — Label (2) */}
                    <span
                      className="absolute flex items-center justify-center rounded-full text-white font-bold"
                      style={{
                        width: '22px',
                        height: '22px',
                        fontSize: '10px',
                        backgroundColor: badgeBg,
                        top: '-12px',
                        left: '50%',
                        transform: 'translateX(-50%)',
                      }}
                    >
                      2
                    </span>

                    {/* 번호 뱃지 — Icon (3) */}
                    <span
                      className="absolute flex items-center justify-center rounded-full text-white font-bold"
                      style={{
                        width: '22px',
                        height: '22px',
                        fontSize: '10px',
                        backgroundColor: badgeBg,
                        top: '-12px',
                        right: '-12px',
                      }}
                    >
                      3
                    </span>
                  </div>
                </div>
                <span
                  className="text-xs font-mono"
                  style={{ color: t.textMuted }}
                >
                  텍스트 + 아이콘 버튼
                </span>
              </div>

              {/* 오른쪽: 아이콘 전용 버튼 */}
              <div className="flex flex-col items-center gap-6">
                <div className="relative">
                  <div
                    className="relative inline-flex items-center justify-center rounded-md"
                    style={{
                      width: '44px',
                      height: '44px',
                      backgroundColor: buttonDarkBg,
                      color: buttonDarkText,
                      fontSize: '18px',
                    }}
                  >
                    <span
                      className="absolute inset-0 rounded-md pointer-events-none"
                      style={{
                        border: `1.5px dashed ${isDark ? 'rgba(255,255,255,0.25)' : 'rgba(0,0,0,0.20)'}`,
                      }}
                    />
                    ♥

                    {/* 번호 뱃지 — Container (1) */}
                    <span
                      className="absolute flex items-center justify-center rounded-full text-white font-bold"
                      style={{
                        width: '22px',
                        height: '22px',
                        fontSize: '10px',
                        backgroundColor: badgeBg,
                        top: '-12px',
                        left: '-12px',
                      }}
                    >
                      1
                    </span>

                    {/* 번호 뱃지 — Icon (3) */}
                    <span
                      className="absolute flex items-center justify-center rounded-full text-white font-bold"
                      style={{
                        width: '22px',
                        height: '22px',
                        fontSize: '10px',
                        backgroundColor: badgeBg,
                        top: '-12px',
                        right: '-12px',
                      }}
                    >
                      3
                    </span>
                  </div>
                </div>
                <span
                  className="text-xs font-mono"
                  style={{ color: t.textMuted }}
                >
                  아이콘 전용 버튼
                </span>
              </div>
            </div>
          </div>

          {/* 번호 목록 */}
          <ol className="flex flex-col gap-2 pl-5 list-decimal">
            {[
              { label: 'Container', desc: '버튼의 외곽 영역. 클릭 가능한 전체 영역을 정의합니다.' },
              { label: 'Label', desc: '버튼의 텍스트 레이블.' },
              { label: 'Icon (Optional)', desc: '선택적으로 추가되는 아이콘 요소.' },
            ].map((item) => (
              <li key={item.label} style={{ color: t.textSecondary }}>
                <span className="font-bold" style={{ color: t.textPrimary }}>
                  {item.label}
                </span>
                {' '}— {item.desc}
              </li>
            ))}
          </ol>
        </div>

        {/* ── 섹션 3: Spec ── */}
        <div className="mb-16">
          <h2
            className="text-2xl font-bold mb-10"
            style={{ color: t.textPrimary }}
          >
            Spec
          </h2>

          {/* 3-1. Size */}
          <div className="mb-12">
            <h3
              className="text-xl font-semibold mb-6"
              style={{ color: t.textPrimary }}
            >
              1. Size
            </h3>
            <div
              className="rounded-xl p-8"
              style={{ backgroundColor: sectionCardBg }}
            >
              <div className="flex flex-col gap-5">
                {BUTTON_SIZES.map((size) => (
                  <div key={size.label} className="flex items-center justify-between gap-8">
                    {/* 라벨 */}
                    <span
                      className="font-mono text-sm w-36 shrink-0"
                      style={{ color: t.textSecondary }}
                    >
                      {size.label}
                    </span>

                    {/* 실제 크기 버튼 */}
                    <div className="flex-1 flex items-center">
                      <button
                        type="button"
                        className="rounded-md font-semibold text-sm"
                        style={{
                          height: `${size.heightPx}px`,
                          paddingLeft: `${size.px}px`,
                          paddingRight: `${size.px}px`,
                          backgroundColor: buttonDarkBg,
                          color: buttonDarkText,
                          border: 'none',
                          cursor: 'default',
                          fontSize: size.heightPx <= 24 ? '11px' : size.heightPx <= 32 ? '12px' : '14px',
                        }}
                      >
                        레이블
                      </button>
                    </div>
                  </div>
                ))}
              </div>
            </div>
          </div>

          {/* 3-2. Container */}
          <div className="mb-12">
            <h3
              className="text-xl font-semibold mb-6"
              style={{ color: t.textPrimary }}
            >
              2. Container
            </h3>
            <div
              className="rounded-xl p-8"
              style={{ backgroundColor: sectionCardBg }}
            >
              <div className="flex flex-col gap-8">

                {/* Flexible */}
                <div className="flex flex-col gap-3">
                  <span
                    className="font-mono text-sm font-bold"
                    style={{ color: t.textPrimary }}
                  >
                    Flexible
                  </span>
                  <div className="flex items-center gap-4">
                    <div className="relative inline-flex">
                      {/* 좌측 padding 치수선 */}
                      <div
                        className="absolute top-1/2 flex items-center"
                        style={{
                          left: '0',
                          transform: 'translateY(-50%)',
                          color: annotationColor,
                        }}
                      >
                        <div
                          style={{
                            width: '20px',
                            height: '1px',
                            backgroundColor: annotationColor,
                          }}
                        />
                        <span
                          className="font-mono absolute"
                          style={{
                            fontSize: '9px',
                            color: annotationColor,
                            top: '-14px',
                            left: '2px',
                            whiteSpace: 'nowrap',
                          }}
                        >
                          20px
                        </span>
                      </div>

                      <button
                        type="button"
                        className="rounded-md font-semibold"
                        style={{
                          height: '44px',
                          paddingLeft: '20px',
                          paddingRight: '20px',
                          backgroundColor: buttonDarkBg,
                          color: buttonDarkText,
                          fontSize: '14px',
                          border: 'none',
                          cursor: 'default',
                        }}
                      >
                        레이블
                      </button>

                      {/* 우측 padding 치수선 */}
                      <div
                        className="absolute top-1/2 flex items-center justify-end"
                        style={{
                          right: '0',
                          transform: 'translateY(-50%)',
                        }}
                      >
                        <div
                          style={{
                            width: '20px',
                            height: '1px',
                            backgroundColor: annotationColor,
                          }}
                        />
                        <span
                          className="font-mono absolute"
                          style={{
                            fontSize: '9px',
                            color: annotationColor,
                            top: '-14px',
                            right: '2px',
                            whiteSpace: 'nowrap',
                          }}
                        >
                          20px
                        </span>
                      </div>
                    </div>
                    <span
                      className="font-mono text-xs"
                      style={{ color: t.textSecondary }}
                    >
                      콘텐츠에 맞게 너비가 자동으로 조정됩니다.
                    </span>
                  </div>
                </div>

                {/* Fixed */}
                <div className="flex flex-col gap-3">
                  <span
                    className="font-mono text-sm font-bold"
                    style={{ color: t.textPrimary }}
                  >
                    Fixed
                  </span>
                  <div className="flex items-center gap-4">
                    <div className="relative">
                      <button
                        type="button"
                        className="rounded-md font-semibold"
                        style={{
                          height: '44px',
                          width: '160px',
                          backgroundColor: buttonDarkBg,
                          color: buttonDarkText,
                          fontSize: '14px',
                          border: 'none',
                          cursor: 'default',
                        }}
                      >
                        레이블
                      </button>
                      {/* 고정 너비 표시 */}
                      <div
                        className="absolute"
                        style={{
                          bottom: '-18px',
                          left: '0',
                          right: '0',
                          display: 'flex',
                          alignItems: 'center',
                          gap: '4px',
                        }}
                      >
                        <div style={{ height: '1px', flex: 1, backgroundColor: annotationColor }} />
                        <span
                          className="font-mono"
                          style={{ fontSize: '9px', color: annotationColor, whiteSpace: 'nowrap' }}
                        >
                          Fixed Width
                        </span>
                        <div style={{ height: '1px', flex: 1, backgroundColor: annotationColor }} />
                      </div>
                    </div>
                    <span
                      className="font-mono text-xs ml-4"
                      style={{ color: t.textSecondary }}
                    >
                      너비가 고정된 버튼입니다.
                    </span>
                  </div>
                </div>
              </div>
            </div>
          </div>

          {/* 3-3. Label */}
          <div className="mb-12">
            <h3
              className="text-xl font-semibold mb-6"
              style={{ color: t.textPrimary }}
            >
              3. Label
            </h3>
            <div
              className="rounded-xl p-8"
              style={{ backgroundColor: sectionCardBg }}
            >
              <div className="flex flex-col gap-8">
                {[
                  { resolution: '해상도 430', width: '100%', maxWidth: '390px', padding: 16 },
                  { resolution: '해상도 360', width: '100%', maxWidth: '328px', padding: 16 },
                  { resolution: '해상도 320', width: '248px', maxWidth: '248px', padding: 16 },
                ].map((item) => (
                  <div key={item.resolution} className="flex flex-col gap-3">
                    <span
                      className="font-mono text-sm"
                      style={{ color: t.textSecondary }}
                    >
                      {item.resolution}
                    </span>
                    <div className="flex items-center gap-6">
                      <div
                        className="relative"
                        style={{ width: item.width, maxWidth: item.maxWidth }}
                      >
                        <button
                          type="button"
                          className="w-full rounded-md font-semibold"
                          style={{
                            height: '44px',
                            paddingLeft: `${item.padding}px`,
                            paddingRight: `${item.padding}px`,
                            backgroundColor: buttonDarkBg,
                            color: buttonDarkText,
                            fontSize: '14px',
                            border: 'none',
                            cursor: 'default',
                          }}
                        >
                          레이블
                        </button>
                        {/* 패딩 주석 */}
                        <span
                          className="absolute font-mono"
                          style={{
                            fontSize: '9px',
                            color: annotationColor,
                            top: '-16px',
                            left: '0',
                          }}
                        >
                          padding {item.padding}
                        </span>
                      </div>
                    </div>
                  </div>
                ))}
              </div>
            </div>
          </div>
        </div>

        {/* ── 섹션 4: Style (변형 × 상태 매트릭스) ── */}
        <div
          className="pt-12 border-t border-solid"
          style={{ borderColor: dividerColor }}
        >
          <h2
            className="text-2xl font-bold mb-8"
            style={{ color: t.textPrimary }}
          >
            Style
          </h2>

          <div
            className="rounded-xl p-8 overflow-x-auto"
            style={{ backgroundColor: sectionCardBg }}
          >
            <table style={{ borderCollapse: 'collapse', minWidth: '700px' }}>
              {/* 열 헤더 */}
              <thead>
                <tr>
                  {/* 빈 셀 (상태 열) */}
                  <th style={{ width: '100px', padding: '8px 12px' }} />
                  {VARIANTS.map((variant) => (
                    <th
                      key={variant}
                      className="font-mono text-xs font-semibold text-center pb-4"
                      style={{
                        color: t.textSecondary,
                        padding: '8px 12px',
                        whiteSpace: 'nowrap',
                      }}
                    >
                      {variant}
                    </th>
                  ))}
                </tr>
              </thead>

              <tbody>
                {stateRows.map((row, rowIdx) => (
                  <tr key={row.state}>
                    {/* 상태 라벨 */}
                    <td
                      className="font-mono text-xs font-medium"
                      style={{
                        color: t.textSecondary,
                        padding: rowIdx === 0 ? '8px 12px 8px 0' : '8px 12px 8px 0',
                        verticalAlign: 'middle',
                        whiteSpace: 'nowrap',
                      }}
                    >
                      {row.state}
                    </td>

                    {/* 각 변형별 버튼 셀 */}
                    {VARIANTS.map((_, vIdx) => {
                      const style = getVariantStyle(row, vIdx);
                      return (
                        <td
                          key={vIdx}
                          style={{ padding: '8px 12px', verticalAlign: 'middle', textAlign: 'center' }}
                        >
                          <button
                            type="button"
                            className="rounded-md font-semibold"
                            style={{
                              width: '96px',
                              height: '40px',
                              backgroundColor: style.bg,
                              color: style.text,
                              border: style.border ? `1.5px solid ${style.border}` : 'none',
                              fontSize: '12px',
                              cursor: 'default',
                              display: 'inline-flex',
                              alignItems: 'center',
                              justifyContent: 'center',
                            }}
                          >
                            레이블
                          </button>
                        </td>
                      );
                    })}
                  </tr>
                ))}
              </tbody>
            </table>
          </div>
        </div>

      </div>
    </div>
  );
};

export default ButtonContent;
