// ===== demos/rhythm/montage-rhythm-moves/DominoCascade.tsx =====
// 多米诺连锁入场（domino-cascade）——Rube Goldberg / OK Go MV。
// 三级动量链，每级 startFrame = 上一级 impact 帧：
// ① 帧 36–51 标题 "CHAIN REACTION" 从画外顶 ease-in(cubic) 砸落上半屏，
//    impact 帧 51 全画面竖向震一拍（4f 衰减）；
// ② 帧 51 起下方 4 张卡片被震得依次（隔 5f）向上弹 60px 抛物线落回（12f），
//    末卡落地帧 78 = 第二次撞击（再震一拍 + 末卡向左歪 3° 给出横向动量）；
// ③ 帧 78–100 左侧深色侧边栏被横向撞滑进场，Easing.out(cubic) 带过冲回弹；帧 100–150 全体真静止。
import React from 'react';
import { useCurrentFrame, interpolate, Easing } from 'remotion';
import { G, Card, TitleBlock } from '../../_fixtures/Fixtures';

const easeInCubic = Easing.in(Easing.cubic);
const easeOutCubic = Easing.out(Easing.cubic);

// —— 关键帧 ——
const TITLE_START = 36; // 砸落开始（前 36f hold 读布景）
const IMPACT_1 = 51; // 标题落地 = 第一次撞击
const CARD_STAGGER = 5;
const CARD_DUR = 12;
const IMPACT_2 = IMPACT_1 + 3 * CARD_STAGGER + CARD_DUR; // 78，末卡落地
const SIDE_END = IMPACT_2 + 14; // 92 侧边栏到位（过冲点）
const SIDE_SETTLE = SIDE_END + 8; // 100 回弹结束，此后真静止

// 撞击震动：一拍，4f 内衰减归零
const shake = (f: number, at: number, amp: number) => {
  if (f < at || f > at + 4) return 0;
  const seq = [amp, -amp * 0.6, amp * 0.3, -amp * 0.12, 0];
  return seq[f - at];
};

// 卡片行几何：内容中心 1080（给左侧 240 侧边栏留出位置）
const CARD_W = 340;
const CARD_H = 220;
const GAP = 40;
const ROW_W = 4 * CARD_W + 3 * GAP; // 1480
const ROW_LEFT = 1080 - ROW_W / 2; // 340
const CARD_TOP = 700; // 卡片底边 920，落在地板线上

export const DominoCascade: React.FC = () => {
  const frame = useCurrentFrame();

  // ① 标题砸落：画外顶 → 上半屏，ease-in 加速读作"砸"
  const titleTop = interpolate(frame, [TITLE_START, IMPACT_1], [-260, 240], {
    easing: easeInCubic,
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
  });

  // 两次撞击的全画面竖向震动
  const shakeY = shake(frame, IMPACT_1, 10) + shake(frame, IMPACT_2, 6);

  // ② 卡片弹跳：抛物线 4t(1-t)，依次隔 5f
  const cardDy = (i: number) => {
    const s = IMPACT_1 + i * CARD_STAGGER;
    const t = Math.min(1, Math.max(0, (frame - s) / CARD_DUR));
    return -60 * 4 * t * (1 - t);
  };
  // 末卡落地时向左歪 3°（横向动量的可见出处），随后回正
  const lastCardRot = interpolate(
    frame,
    [IMPACT_2 - 9, IMPACT_2, SIDE_END],
    [0, -3, 0],
    { extrapolateLeft: 'clamp', extrapolateRight: 'clamp' },
  );

  // ③ 侧边栏横向撞滑：带初速滑入 + 过冲回弹
  let sideX: number;
  if (frame < IMPACT_2) {
    sideX = -260;
  } else if (frame < SIDE_END) {
    const t = (frame - IMPACT_2) / (SIDE_END - IMPACT_2);
    sideX = -260 + 272 * easeOutCubic(t); // 冲到 +12（约 5% 过冲）
  } else if (frame < SIDE_SETTLE) {
    const t = (frame - SIDE_END) / (SIDE_SETTLE - SIDE_END);
    sideX = 12 * (1 - Easing.inOut(Easing.quad)(t));
  } else {
    sideX = 0;
  }

  return (
    <div style={{ width: 1920, height: 1080, background: G.bg, overflow: 'hidden', position: 'relative' }}>
      {/* 全画面震动容器 */}
      <div style={{ position: 'absolute', inset: 0, transform: `translateY(${shakeY}px)` }}>
        {/* 地板线：卡片落点 */}
        <div style={{ position: 'absolute', left: ROW_LEFT - 30, top: 928, width: ROW_W + 60, height: 6, background: G.bar, borderRadius: 3 }} />

        {/* ① 砸落的标题 */}
        <div style={{ position: 'absolute', left: 240, width: 1680, top: titleTop, display: 'flex', justifyContent: 'center' }}>
          <TitleBlock text="CHAIN REACTION" size={120} />
        </div>

        {/* ② 被震弹起的 4 张卡片 */}
        {[0, 1, 2, 3].map((i) => (
          <div
            key={i}
            style={{
              position: 'absolute',
              left: ROW_LEFT + i * (CARD_W + GAP),
              top: CARD_TOP,
              transform: `translateY(${cardDy(i)}px)${i === 3 ? ` rotate(${lastCardRot}deg)` : ''}`,
              transformOrigin: '50% 100%',
            }}
          >
            <Card w={CARD_W} h={CARD_H} seed={i + 2} />
          </div>
        ))}

        {/* ③ 被撞滑进场的侧边栏 */}
        <div
          style={{
            position: 'absolute', left: 0, top: 0, width: 240, height: 1080,
            background: G.side, transform: `translateX(${sideX}px)`,
            padding: '32px 24px', boxSizing: 'border-box',
            display: 'flex', flexDirection: 'column', gap: 22,
          }}
        >
          <div style={{ width: 44, height: 44, borderRadius: 10, background: '#777775' }} />
          {Array.from({ length: 8 }).map((_, i) => (
            <div key={i} style={{ height: 13, width: `${58 + ((i * 31) % 38)}%`, background: G.sideBar, borderRadius: 6 }} />
          ))}
        </div>
      </div>
    </div>
  );
};


// ===== demos/rhythm/montage-rhythm-moves/DropBlackoutSlam.tsx =====
// 落拍黑场爆开（drop-blackout-slam）——EDM concert blackout 的节奏手法：
// 帧 0–49:假面板正常"播放"(scale 呼吸 1.0↔1.02)+右下角节拍点每 12f 闪一下;
// 帧 50–61:一帧切纯黑 #0c0c0c,整整 12f 死寂,屏上完全无物(蓄力全靠这一拍静默);
// 帧 62:白色大标题 "DROP" 从 scale 1.35 撞到 1.0(5f cubic out),同帧整屏
// 10px 震屏指数衰减(τ≈2.5f,约 12f 收干),底色变 G.ink 并从中心泛出一圈
// 快速消散的亮环;帧 ~80 起全静止到 130,收尾 ≥40f 真静止。
import React from 'react';
import { useCurrentFrame, interpolate, Easing } from 'remotion';
import { FakeDashboard, G } from '../../_fixtures/Fixtures';

// 帧确定伪随机(硬规矩:禁 Math.random)
const h = (n: number) => {
  const s = Math.sin(n * 127.3) * 43758.5453;
  return s - Math.floor(s);
};

const BLACK_IN = 50; // 切黑帧
const SLAM = 62; // 爆入帧

export const DropBlackoutSlam: React.FC = () => {
  const f = useCurrentFrame();

  // ===== 段 1:帧 0–49 正常播放 =====
  if (f < BLACK_IN) {
    // scale 呼吸 1.0↔1.02,周期 48f
    const breathe = 1.01 + 0.01 * Math.sin((f / 48) * Math.PI * 2);
    // 节拍点:每 12f 闪一下(亮 4f 衰减)
    const beatPhase = f % 12;
    const beatOn = interpolate(beatPhase, [0, 1, 5], [0.25, 1, 0.25], {
      extrapolateLeft: 'clamp',
      extrapolateRight: 'clamp',
    });
    const beatScale = interpolate(beatPhase, [0, 1, 5], [1, 1.5, 1], {
      extrapolateLeft: 'clamp',
      extrapolateRight: 'clamp',
    });
    return (
      <div style={{ width: 1920, height: 1080, background: G.bg, overflow: 'hidden', position: 'relative' }}>
        <div style={{ width: 1920, height: 1080, transform: `scale(${breathe})`, transformOrigin: '50% 50%' }}>
          <FakeDashboard variant="B" />
        </div>
        {/* 右下角节拍点 */}
        <div
          style={{
            position: 'absolute',
            right: 56,
            bottom: 48,
            width: 36,
            height: 36,
            borderRadius: 18,
            background: G.ink,
            opacity: beatOn,
            transform: `scale(${beatScale})`,
          }}
        />
      </div>
    );
  }

  // ===== 段 2:帧 50–61 纯黑死寂,屏上完全无物 =====
  if (f < SLAM) {
    return <div style={{ width: 1920, height: 1080, background: '#0c0c0c' }} />;
  }

  // ===== 段 3:帧 62 起爆入 =====
  const t = f - SLAM;

  // 标题:scale 1.35 → 1.0,5f cubic out
  const slamScale = interpolate(t, [0, 5], [1.35, 1], {
    easing: Easing.out(Easing.cubic),
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
  });

  // 震屏:10px 指数衰减,τ≈2.5f,~12f 收干;t≥14 强制归零保证结尾真静止
  const amp = t >= 14 ? 0 : 10 * Math.exp(-t / 2.5);
  const shakeX = amp === 0 ? 0 : (h(f * 3.7 + 1) - 0.5) * 2 * amp;
  const shakeY = amp === 0 ? 0 : (h(f * 7.1 + 2) - 0.5) * 2 * amp;

  // 亮环:从中心快速扩散并消散,~16f 走完(t≥16 后 opacity=0 且不再画)
  const ringR = interpolate(t, [0, 16], [80, 900], {
    easing: Easing.out(Easing.cubic),
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
  });
  const ringOpacity = interpolate(t, [0, 3, 16], [0.85, 0.55, 0], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
  });

  return (
    <div style={{ width: 1920, height: 1080, background: G.ink, overflow: 'hidden', position: 'relative' }}>
      <div
        style={{
          width: 1920,
          height: 1080,
          transform: `translate(${shakeX}px, ${shakeY}px)`,
          display: 'flex',
          alignItems: 'center',
          justifyContent: 'center',
          position: 'relative',
        }}
      >
        {/* 亮环:快速扩散消散 */}
        {t < 16 && (
          <div
            style={{
              position: 'absolute',
              left: 960 - ringR,
              top: 540 - ringR,
              width: ringR * 2,
              height: ringR * 2,
              borderRadius: '50%',
              border: '10px solid #ffffff',
              opacity: ringOpacity,
            }}
          />
        )}
        <div
          style={{
            fontFamily: 'Helvetica, Arial, sans-serif',
            fontWeight: 800,
            fontSize: 340,
            color: '#ffffff',
            letterSpacing: -6,
            transform: `scale(${slamScale})`,
            lineHeight: 1,
          }}
        >
          DROP
        </div>
      </div>
    </div>
  );
};


// ===== demos/rhythm/montage-rhythm-moves/WrightTripleCut.tsx =====
// 三连咔哒特写（wright-triple-cut）——Edgar Wright《僵尸肖恩》流程三连快切:
// 帧 0–24 全景 hold(FakeDashboard A);随后三个 10f 特写硬切连打,每个特写
// 前 4f 静止、中 3f 动作、后 3f 静止:①25–34 光标按下按钮(圆点缩一圈+按钮变深)
// ②35–44 开关左拨右(圆钮 3f 滑动+轨道 G.mid→G.ink) ③45–54 大数字 rotateX 翻牌 0→1;
// 帧 55 甩回全景:6f whip translateX 滑入,高速段 3 层错帧副本模拟运动模糊,
// 中上卡片提亮泛光+大 "1" 标记结果;帧 ~68 起全静止到 130(真静止 ≥60f)。
import React from 'react';
import { useCurrentFrame, interpolate, Easing } from 'remotion';
import { FakeDashboard, G } from '../../_fixtures/Fixtures';

const HOLD_END = 25; // 全景 hold 结束
const C1 = 25; // 特写一:光标按下
const C2 = 35; // 特写二:开关
const C3 = 45; // 特写三:翻牌
const WHIP = 55; // 甩回全景

// 特写统一舞台:G.panel 底 + 居中大白卡,主体屏心、同倍率感
const CloseupStage: React.FC<{ children: React.ReactNode }> = ({ children }) => (
  <div style={{ width: 1920, height: 1080, background: G.panel, display: 'flex', alignItems: 'center', justifyContent: 'center' }}>
    <div style={{
      width: 1400, height: 800, background: G.card, border: `4px solid ${G.border}`,
      borderRadius: 28, boxShadow: '0 6px 24px rgba(0,0,0,0.08)',
      display: 'flex', alignItems: 'center', justifyContent: 'center',
    }}>
      {children}
    </div>
  </div>
);

// 结果卡片(3×2 网格中上格)的几何:sidebar 220 + padding 36,列宽 524,行高 454
const RESULT = { left: 808, top: 108, w: 524, h: 454 };

export const WrightTripleCut: React.FC = () => {
  const f = useCurrentFrame();

  // ===== 帧 0–24:全景 hold =====
  if (f < HOLD_END) {
    return <FakeDashboard variant="A" />;
  }

  // ===== 特写一(25–34):光标从悬停到按下,按钮变深 =====
  if (f < C2) {
    const t = f - C1; // 局部 0–9;动作窗 4–6
    const p = interpolate(t, [4, 7], [0, 1], {
      easing: Easing.out(Easing.cubic), extrapolateLeft: 'clamp', extrapolateRight: 'clamp',
    });
    const cursorScale = 1 - 0.3 * p; // 1 → 0.7 缩一圈
    const btnBg = p < 0.5 ? G.bar : '#5c5c5a'; // 按下瞬间变深
    const btnY = 8 * p; // 按钮被压下 8px
    return (
      <CloseupStage>
        <div style={{ position: 'relative', display: 'flex', alignItems: 'center', justifyContent: 'center' }}>
          <div style={{
            width: 620, height: 190, borderRadius: 40, background: btnBg,
            border: `5px solid ${G.mid}`, boxSizing: 'border-box',
            transform: `translateY(${btnY}px)`,
            display: 'flex', alignItems: 'center', justifyContent: 'center', gap: 14,
          }}>
            <div style={{ width: 260, height: 30, borderRadius: 15, background: p < 0.5 ? G.card : G.line }} />
          </div>
          {/* 圆形光标点:悬停在按钮中心,按下缩一圈 */}
          <div style={{
            position: 'absolute', left: '50%', top: '50%',
            width: 96, height: 96, marginLeft: -48, marginTop: -48 + btnY,
            borderRadius: 48, background: G.ink, border: '8px solid #ffffff',
            boxSizing: 'border-box', transform: `scale(${cursorScale})`,
            boxShadow: '0 4px 14px rgba(0,0,0,0.3)',
          }} />
        </div>
      </CloseupStage>
    );
  }

  // ===== 特写二(35–44):开关从左拨到右 =====
  if (f < C3) {
    const t = f - C2;
    const p = interpolate(t, [4, 7], [0, 1], {
      easing: Easing.out(Easing.cubic), extrapolateLeft: 'clamp', extrapolateRight: 'clamp',
    });
    const trackW = 560; const trackH = 240; const knob = 192; const pad = 24;
    const knobX = pad + p * (trackW - knob - pad * 2); // 左 → 右
    const trackBg = p < 0.5 ? G.mid : G.ink;
    return (
      <CloseupStage>
        <div style={{
          position: 'relative', width: trackW, height: trackH, borderRadius: trackH / 2,
          background: trackBg, boxSizing: 'border-box',
        }}>
          <div style={{
            position: 'absolute', top: pad, left: knobX,
            width: knob, height: knob, borderRadius: knob / 2, background: G.card,
            boxShadow: '0 6px 18px rgba(0,0,0,0.35)',
          }} />
        </div>
      </CloseupStage>
    );
  }

  // ===== 特写三(45–54):大数字翻牌 0 → 1(rotateX) =====
  if (f < WHIP) {
    const t = f - C3;
    const p = interpolate(t, [4, 7], [0, 1], {
      easing: Easing.inOut(Easing.cubic), extrapolateLeft: 'clamp', extrapolateRight: 'clamp',
    });
    const showOne = p >= 0.5;
    const angle = showOne ? (1 - p) * 2 * 90 : -p * 2 * 90; // 0→-90 折走,90→0 翻入
    const digit = showOne ? '1' : '0';
    return (
      <CloseupStage>
        <div style={{ perspective: 1200 }}>
          <div style={{
            width: 440, height: 560, borderRadius: 32, background: G.ink,
            display: 'flex', alignItems: 'center', justifyContent: 'center',
            transform: `rotateX(${angle}deg)`, backfaceVisibility: 'hidden',
            boxShadow: '0 8px 28px rgba(0,0,0,0.25)',
          }}>
            <div style={{
              fontFamily: 'Helvetica, Arial, sans-serif', fontWeight: 800,
              fontSize: 420, color: '#ffffff', lineHeight: 1,
            }}>
              {digit}
            </div>
          </div>
        </div>
      </CloseupStage>
    );
  }

  // ===== 帧 55 起:甩回全景 + 结果卡片亮起 =====
  const t = f - WHIP;
  // whip:6f 从右侧 900px 高速滑入,poly(5) out 急减速;t≥6 恒为 0(真静止)
  const whipX = t >= 6 ? 0 : interpolate(t, [0, 6], [900, 0], {
    easing: Easing.out(Easing.poly(5)), extrapolateLeft: 'clamp', extrapolateRight: 'clamp',
  });
  const speeding = t < 4; // 高速段:3 层错帧副本模拟模糊感

  // 结果卡片:泛光 57–84 缓升后恒定(帧 84 起真静止);弹一下 57–64 后恒为 1
  const glow = interpolate(f, [57, 84], [0, 1], { extrapolateLeft: 'clamp', extrapolateRight: 'clamp' });
  const pop = f >= 64 ? 1 : interpolate(f, [57, 60, 64], [1, 1.07, 1], {
    easing: Easing.out(Easing.cubic), extrapolateLeft: 'clamp', extrapolateRight: 'clamp',
  });

  const dash = (x: number, opacity: number, key: string) => (
    <div key={key} style={{ position: 'absolute', left: 0, top: 0, transform: `translateX(${x}px)`, opacity }}>
      <FakeDashboard variant="A" />
    </div>
  );

  return (
    <div style={{ width: 1920, height: 1080, background: G.bg, overflow: 'hidden', position: 'relative' }}>
      {speeding && dash(whipX + 220, 0.18, 'echo2')}
      {speeding && dash(whipX + 110, 0.35, 'echo1')}
      {dash(whipX, 1, 'main')}
      {/* 结果卡片提亮泛光 */}
      <div style={{
        position: 'absolute',
        left: RESULT.left, top: RESULT.top, width: RESULT.w, height: RESULT.h,
        transform: `translateX(${whipX}px) scale(${pop})`,
        borderRadius: 14, boxSizing: 'border-box',
        background: `rgba(255,255,255,${0.72 * glow})`,
        border: `5px solid rgba(47,47,47,${glow})`,
        boxShadow: `0 0 ${70 * glow}px rgba(255,255,255,${0.95 * glow}), 0 0 ${26 * glow}px rgba(47,47,47,${0.28 * glow})`,
        display: 'flex', alignItems: 'center', justifyContent: 'center',
        opacity: glow,
      }}>
        <div style={{
          fontFamily: 'Helvetica, Arial, sans-serif', fontWeight: 800,
          fontSize: 260, color: G.ink, lineHeight: 1,
        }}>
          1
        </div>
      </div>
    </div>
  );
};