// ===== demos/rhythm/trailer-grammar-moves/CardFootageCadence.tsx =====
// card-footage-cadence｜字卡穿插节奏
// UI 镜头 ↔ 黑底字卡像对话接拍：0–14f UI A 缓推 → 硬切 8f 字卡 SHIP →
// 硬切 12f UI B 1.6x 裁切缓移 → 8f 字卡 FASTER → 10f UI A 2x 裁切 →
// 10f 字卡 TODAY(下划线) → 62f 硬切收尾全景定格。
// UI 段全部带微动（推/移），字卡段除落定微缩(1.05→1, out-cubic)外全静，
// 动↔静对比即手法本体。所有切换零过渡（条件挂载，无 crossfade）。
// 收尾 62–105f 轻推收完，105–150f 真静止 45f ≥ 40f。帧确定，无随机。
import React from 'react';
import { AbsoluteFill, useCurrentFrame, interpolate, Easing } from 'remotion';
import { FakeDashboard } from '../../_fixtures/Fixtures';

const CLAMP = { extrapolateLeft: 'clamp', extrapolateRight: 'clamp' } as const;

// 黑底白字字卡：落定微缩 1.05→1（out-cubic，段内前 5f 完成），其余全静
const TitleCard: React.FC<{ text: string; local: number; underline?: boolean }> = ({
  text,
  local,
  underline = false,
}) => {
  const scale = interpolate(local, [0, 5], [1.05, 1], {
    ...CLAMP,
    easing: Easing.out(Easing.cubic),
  });
  return (
    <AbsoluteFill
      style={{ background: '#0d0d0d', alignItems: 'center', justifyContent: 'center' }}
    >
      <div
        style={{
          transform: `scale(${scale})`,
          display: 'flex',
          flexDirection: 'column',
          alignItems: 'center',
          gap: 26,
        }}
      >
        <div
          style={{
            fontFamily: 'Helvetica, Arial, sans-serif',
            fontWeight: 800,
            fontSize: 170,
            color: '#ffffff',
            letterSpacing: 2,
            lineHeight: 1,
          }}
        >
          {text}
        </div>
        {underline && (
          <div style={{ width: 560, height: 14, background: '#ffffff', borderRadius: 7 }} />
        )}
      </div>
    </AbsoluteFill>
  );
};

// UI 镜头：包一层 transform 做缓推/缓移，硬切由外层条件挂载保证
const UiShot: React.FC<{
  variant: 'A' | 'B';
  transform: string;
  origin?: string;
}> = ({ variant, transform, origin = '50% 50%' }) => (
  <AbsoluteFill style={{ overflow: 'hidden', background: '#ececea' }}>
    <div style={{ width: 1920, height: 1080, transform, transformOrigin: origin }}>
      <FakeDashboard variant={variant} />
    </div>
  </AbsoluteFill>
);

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

  // ---- 分段：切点 14 / 22 / 34 / 42 / 52 / 62，总长 150 ----

  // 段1 0–14f：UI A 全景缓推 1.0→1.08
  if (frame < 14) {
    const s = interpolate(frame, [0, 14], [1, 1.08], CLAMP);
    return <UiShot variant="A" transform={`scale(${s})`} />;
  }

  // 段2 14–22f：字卡 SHIP
  if (frame < 22) {
    return <TitleCard text="SHIP" local={frame - 14} />;
  }

  // 段3 22–34f：UI B 1.6x 裁切 + 横向缓移（120px 内容位移，屏上 ~192px）。
  // origin 偏左让列表行图标入画，读得出是 UI（QA 后调：50%→35%）
  if (frame < 34) {
    const tx = interpolate(frame - 22, [0, 12], [60, -60], CLAMP);
    return (
      <UiShot variant="B" transform={`scale(1.6) translateX(${tx}px)`} origin="35% 50%" />
    );
  }

  // 段4 34–42f：字卡 FASTER
  if (frame < 42) {
    return <TitleCard text="FASTER" local={frame - 34} />;
  }

  // 段5 42–52f：UI A 另一处 2x 裁切（左上卡片区）+ 继续缓推 2.0→2.14
  if (frame < 52) {
    const s = interpolate(frame - 42, [0, 10], [2, 2.14], CLAMP);
    return <UiShot variant="A" transform={`scale(${s})`} origin="32% 30%" />;
  }

  // 段6 52–62f：字卡 TODAY + 下划线
  if (frame < 62) {
    return <TitleCard text="TODAY" local={frame - 52} underline />;
  }

  // 段7 62–150f：收尾全景 UI 定格。62–105f 极缓推收完（out-cubic），
  // 105f 后 transform 值恒为 1.02，105–150f 真静止 45f。
  const s = interpolate(frame, [62, 105], [1, 1.02], {
    ...CLAMP,
    easing: Easing.out(Easing.cubic),
  });
  return <UiShot variant="B" transform={`scale(${s})`} />;
};


// ===== demos/rhythm/trailer-grammar-moves/SmashCut.tsx =====
// smash-cut｜猛切（喧闹→死寂）
// 0–41f 轰鸣段：5 张 Card 多方向高速飞掠冲镜（穿屏 translate + scale 1.5→3
// 冲脸 + 微 rotate，各卡错峰跑两轮，第二轮更快=整体仍在加速），背景
// FakeDashboard A 以 ease-in 持续加速推近 1→1.55 并滚动 rotate 1.8°——
// 切点前一刻动势最猛。42f 一帧硬切 variant B 整齐静止全景，无一物在动，
// 停满 93f（>50f）。反差即手法本体。总 135f。
import React from 'react';
import { useCurrentFrame, interpolate, Easing } from 'remotion';
import { G, Card, FakeDashboard } from '../../_fixtures/Fixtures';

const CUT = 42; // 硬切帧：>=42 全静止

// 每张飞卡：两轮 pass，第二轮更短（更快），ease-in 让每一程都在加速。
// from/to 为屏幕外起终点（中心系坐标），飞行中 scale 1.5→3 冲脸。
type Fly = {
  from: [number, number];
  to: [number, number];
  rot: [number, number]; // 微旋转 起→终
  seed: number;
  w: number;
  h: number;
};

const FLIES: Fly[] = [
  { from: [-1400, -120], to: [1400, 60], rot: [-6, 5], seed: 1, w: 440, h: 290 },
  { from: [1400, 180], to: [-1400, -100], rot: [7, -4], seed: 2, w: 400, h: 260 },
  { from: [-300, -900], to: [200, 900], rot: [-3, 8], seed: 3, w: 460, h: 300 },
  { from: [-1300, 800], to: [1300, -750], rot: [5, -7], seed: 4, w: 420, h: 280 },
  { from: [1350, -780], to: [-1350, 820], rot: [-8, 4], seed: 5, w: 480, h: 310 },
];

// 卡 i 的第 k 轮：start = i*4 + k*20，时长 16 / 12（第二轮更快）。
// card4 第二轮 36–48f 在切点 42f 被硬切截断——正中"绝不减速迎接切点"。
const passWindow = (i: number, k: number): [number, number] => {
  const start = i * 4 + k * 20;
  const dur = k === 0 ? 16 : 12;
  return [start, start + dur];
};

const FlyCard: React.FC<{ fly: Fly; i: number; frame: number }> = ({ fly, i, frame }) => {
  // 找当前活跃的 pass（两轮）
  let active: [number, number] | null = null;
  for (let k = 0; k < 2; k++) {
    const [s, e] = passWindow(i, k);
    if (frame >= s && frame < e) { active = [s, e]; break; }
  }
  if (!active) return null;
  const [s, e] = active;
  // ease-in：全程加速，越接近终点越快
  const p = interpolate(frame, [s, e], [0, 1], {
    extrapolateLeft: 'clamp', extrapolateRight: 'clamp',
    easing: Easing.in(Easing.quad),
  });
  const x = fly.from[0] + (fly.to[0] - fly.from[0]) * p;
  const y = fly.from[1] + (fly.to[1] - fly.from[1]) * p;
  const rot = fly.rot[0] + (fly.rot[1] - fly.rot[0]) * p;
  const scale = 1.5 + 1.5 * p; // 1.5 → 3 冲脸
  // 速度门控方向模糊感：ease-in 下瞬时速度 ∝ p，速度越快越糊
  const blur = 1 + 4 * p;
  return (
    <div style={{
      position: 'absolute', left: 960 - fly.w / 2, top: 540 - fly.h / 2,
      transform: `translate(${x}px, ${y}px) rotate(${rot}deg) scale(${scale})`,
      filter: `blur(${blur}px)`,
    }}>
      <Card w={fly.w} h={fly.h} seed={fly.seed}
        style={{ boxShadow: '0 12px 40px rgba(0,0,0,0.25)' }} />
    </div>
  );
};

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

  // —— 死寂段：42f 起 variant B 整齐静止全景，无任何动画属性 ——
  if (frame >= CUT) {
    return <FakeDashboard variant="B" />;
  }

  // —— 轰鸣段：背景 ease-in 加速推近 + 滚动，切点前 3f 仍在加速 ——
  const bgScale = interpolate(frame, [0, CUT], [1, 1.55], {
    extrapolateLeft: 'clamp', extrapolateRight: 'clamp',
    easing: Easing.in(Easing.quad),
  });
  const bgRot = interpolate(frame, [0, CUT], [0, 1.8], {
    extrapolateLeft: 'clamp', extrapolateRight: 'clamp',
    easing: Easing.in(Easing.quad),
  });

  return (
    <div style={{ width: 1920, height: 1080, background: G.bg, overflow: 'hidden', position: 'relative' }}>
      <div style={{
        width: 1920, height: 1080,
        transform: `scale(${bgScale}) rotate(${bgRot}deg)`,
        transformOrigin: '50% 50%',
        filter: 'blur(1.5px)', // 背景轻糊，衬前景飞卡
      }}>
        <FakeDashboard variant="A" />
      </div>
      {FLIES.map((fly, i) => (
        <FlyCard key={i} fly={fly} i={i} frame={frame} />
      ))}
    </div>
  );
};


// ===== demos/rhythm/trailer-grammar-moves/TrailerBumper.tsx =====
// trailer-bumper｜前置速剪预告
// 结构即全部：三连 9f 速剪（A 整页 / B 整页 / A 2.2x 怼脸特写）→ 6f 纯黑喘息
// → 正式开场大标题淡入+微升 16f 定格。每个速剪镜头内部带 1→1.04 轻推近。
// 收尾真静止：49f 后所有动画结束，静止 91f（>40f）。
import React from 'react';
import { useCurrentFrame, interpolate, Easing } from 'remotion';
import { G, FakeDashboard } from '../../_fixtures/Fixtures';

// 时间轴（帧）
const CUT_1 = 0;   // 镜头1：variant A 整页
const CUT_2 = 9;   // 镜头2：variant B 整页
const CUT_3 = 18;  // 镜头3：variant A 2.2x 怼脸特写
const BLACK = 27;  // 纯黑静默
const TITLE = 33;  // 正式开场
const TITLE_IN = 16; // 标题淡入+微升时长

// 速剪镜头内部轻推近：镜头内 local 0→9f，scale 1→1.04（线性，活镜头感）
const push = (frame: number, start: number) =>
  interpolate(frame, [start, start + 9], [1, 1.04], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
  });

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

  // —— 段落 1–3：三连速剪 ——
  if (frame < BLACK) {
    let inner: React.ReactNode;
    if (frame < CUT_2) {
      // 镜头1：A 整页 + 轻推近
      inner = (
        <div style={{ width: 1920, height: 1080, transform: `scale(${push(frame, CUT_1)})`, transformOrigin: '50% 50%' }}>
          <FakeDashboard variant="A" />
        </div>
      );
    } else if (frame < CUT_3) {
      // 镜头2：B 整页 + 轻推近
      inner = (
        <div style={{ width: 1920, height: 1080, transform: `scale(${push(frame, CUT_2)})`, transformOrigin: '50% 50%' }}>
          <FakeDashboard variant="B" />
        </div>
      );
    } else {
      // 镜头3：A 的 2.2x 放大裁切怼脸特写（对准中列卡片），叠加同样的轻推近
      const s = 2.2 * push(frame, CUT_3);
      inner = (
        <div style={{ width: 1920, height: 1080, transform: `scale(${s})`, transformOrigin: '58% 40%' }}>
          <FakeDashboard variant="A" />
        </div>
      );
    }
    return (
      <div style={{ width: 1920, height: 1080, overflow: 'hidden', background: G.bg }}>
        {inner}
      </div>
    );
  }

  // —— 段落 4：纯黑静默 6f，必须纯黑无物 ——
  if (frame < TITLE) {
    return <div style={{ width: 1920, height: 1080, background: '#000000' }} />;
  }

  // —— 段落 5：正式开场——浅底大标题淡入+微升 16f 后定格 ——
  const opacity = interpolate(frame, [TITLE, TITLE + TITLE_IN], [0, 1], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
  });
  const rise = interpolate(frame, [TITLE, TITLE + TITLE_IN], [44, 0], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
    easing: Easing.out(Easing.cubic),
  });
  return (
    <div
      style={{
        width: 1920,
        height: 1080,
        background: G.bg,
        display: 'flex',
        alignItems: 'center',
        justifyContent: 'center',
        overflow: 'hidden',
      }}
    >
      <div
        style={{
          opacity,
          transform: `translateY(${rise}px)`,
          fontFamily: 'Helvetica, Arial, sans-serif',
          fontWeight: 800,
          fontSize: 168,
          color: G.ink,
          letterSpacing: -2,
          textAlign: 'center',
        }}
      >
        THE LAUNCH
      </div>
    </div>
  );
};