/**
 * Aqua jelly button / כפתור ג'לי אקווה  (student motion library, id "y2k-aqua-button")
 * Use: copy this file into your Remotion project and register it in your Root:
 *   <Composition id="LibY2kAqua" component={Y2kAqua} width={1920} height={1080} fps={30}
 *     durationInFrames={132} defaultProps={aquaDefaults} />
 * Render transparent: npx remotion render src/index.ts LibY2kAqua out.webm --codec=vp9 --pixel-format=yuva420p --image-format=png --props=props.json
 * Change the words / colours / side in props.json (same keys as aquaDefaults). A vertical video: width 1080, height 1920.
 */
// ---------------------------------------------------------------- helpers (shared by every library scene)
// Conventions: 1920x1080, 30 fps, transparent background. Sizes follow the frame's short side, so 1080x1920 works too.
// Common props: duration (s), side 'right' | 'left' | 'center', x / y (centre in % of the frame, override side),
// scale, font (a CSS font-family; default Heebo). Time is in seconds; the first and last frames are empty.
import React from 'react';
import {AbsoluteFill, Easing, useCurrentFrame, useVideoConfig} from 'remotion';
import {loadFont as loadHeebo} from '@remotion/google-fonts/Heebo';


const heebo = loadHeebo('normal', {weights: ['400', '500', '700', '800', '900'], subsets: ['hebrew', 'latin']});
/** Hebrew + Latin font (Google "Heebo"). props.font overrides it per scene. */
export const HEEBO = `${heebo.fontFamily}, "Helvetica Neue", Arial, sans-serif`;
export const MONO = 'ui-monospace, "SF Mono", Menlo, Consolas, monospace';

export type Side = 'right' | 'left' | 'center';
export type Base = {duration?: number; side?: Side; x?: number; y?: number; scale?: number; font?: string};

export const clamp01 = (x: number) => Math.min(1, Math.max(0, x));
/** 0..1 progress of t between a and b (seconds) */
export const p01 = (t: number, a: number, b: number) => clamp01((t - a) / (b - a));
export const lerp = (a: number, b: number, k: number) => a + (b - a) * k;
export const outE = Easing.bezier(0.16, 1, 0.3, 1); // fast out, long settle
export const inOut = Easing.bezier(0.65, 0, 0.35, 1);
export const inE = Easing.bezier(0.55, 0, 0.9, 0.45);
export const backOut = (x: number, s = 1.7) => (x <= 0 ? 0 : x >= 1 ? 1 : 1 + (s + 1) * Math.pow(x - 1, 3) + s * Math.pow(x - 1, 2));
/** Damped spring 0 -> 1 starting at t0 (closed form, so any frame computes on its own). */
export const spr = (t: number, t0: number, freq = 16, damp = 9) => {
  const x = t - t0;
  return x <= 0 ? 0 : 1 - Math.exp(-damp * x) * Math.cos(freq * x);
};
/** Deterministic pseudo random 0..1 */
export const rnd = (i: number, seed = 1) => {
  const v = Math.sin(i * 127.1 + seed * 311.7) * 43758.5453;
  return v - Math.floor(v);
};
export const isHe = (s: string) => /[֐-׿]/.test(s);
export const dirOf = (s: string): 'rtl' | 'ltr' => (isHe(s) ? 'rtl' : 'ltr');
/** "#a1b2c3" / "#abc" + alpha -> rgba() */
export const rgba = (hex: string, a = 1) => {
  let h = hex.replace('#', '');
  if (h.length === 3) h = h.split('').map((ch) => ch + ch).join('');
  const n = parseInt(h.slice(0, 6), 16);
  return `rgba(${(n >> 16) & 255},${(n >> 8) & 255},${n & 255},${a})`;
};
export const useT = () => {
  const f = useCurrentFrame();
  const {fps} = useVideoConfig();
  return f / fps;
};
/** 12345 -> "12,345" */
export const fmt = (n: number, sep = ',') => Math.round(n).toString().replace(/\B(?=(\d{3})+(?!\d))/g, sep);

/** Arrive (scale up out of a blur) and leave (shrink into a blur) for a whole group. */
export const life = (t: number, total: number, inDur = 0.45, outDur = 0.35) => {
  const a = p01(t, 0, inDur);
  const z = inOut(p01(t, total - outDur, total));
  return {
    opacity: clamp01(a * 2.2) * (1 - z),
    scale: lerp(0.82, 1, backOut(a, 1.4)) * (1 - 0.08 * z),
    blur: (1 - outE(a)) * 12 + z * 10,
    style: {} as React.CSSProperties,
  };
};
export const lifeStyle = (t: number, total: number, inDur = 0.45, outDur = 0.35): React.CSSProperties => {
  const l = life(t, total, inDur, outDur);
  return {opacity: l.opacity, transform: `scale(${l.scale})`, filter: l.blur > 0.2 ? `blur(${l.blur}px)` : undefined};
};

/**
 * Places a w x h box (design pixels of a 1080-high frame) on its side of the frame and scales it with the frame's
 * short side and props.scale. Children are positioned inside the box.
 */
export const Stage: React.FC<{p: Base; w: number; h: number; children: React.ReactNode; style?: React.CSSProperties; defSide?: Side}> = ({p, w, h, children, style, defSide = 'center'}) => {
  const {width: W, height: H} = useVideoConfig();
  const u = (Math.min(W, H) / 1080) * (p.scale ?? 1);
  const side = p.side ?? defSide;
  const cx = ((p.x ?? (side === 'right' ? 73 : side === 'left' ? 27 : 50)) / 100) * W;
  const cy = ((p.y ?? 50) / 100) * H;
  return (
    <AbsoluteFill style={{pointerEvents: 'none'}}>
      <div style={{position: 'absolute', left: cx - w / 2, top: cy - h / 2, width: w, height: h, transform: `scale(${u})`, transformOrigin: '50% 50%', ...style}}>
        {children}
      </div>
    </AbsoluteFill>
  );
};

/** Soft two-layer drop shadow for cards on any footage */
export const SHADOW = '0 22px 48px rgba(12,12,20,0.22), 0 4px 12px rgba(12,12,20,0.14)';

/** The classic arrow cursor; (x, y) = its tip; press 0..1 = mouse down. */
export const Cursor: React.FC<{x: number; y: number; press?: number; size?: number; fill?: string; stroke?: string}> = ({x, y, press = 0, size = 1.6, fill = '#111', stroke = '#fff'}) => {
  const s = size * (1 - 0.12 * press);
  return (
    <svg viewBox="-2 -2 17 25" width={17 * s * 1.35} height={25 * s * 1.35} style={{position: 'absolute', left: x - 2.7 * s, top: y - 2.7 * s, overflow: 'visible', filter: 'drop-shadow(0 3px 4px rgba(0,0,0,0.35))'}}>
      <path d="M0 0 L0 17.4 L4 13.7 L6.9 20.4 L9.6 19.2 L6.8 12.8 L12.4 12.8 Z" fill={fill} stroke={stroke} strokeWidth={1.1} strokeLinejoin="round" />
    </svg>
  );
};

/** A four-point sparkle centred on (0,0) in a -50..50 box. */
export const SPARK_PATH = 'M0 -50 C 6 -14 14 -6 50 0 C 14 6 6 14 0 50 C -6 14 -14 6 -50 0 C -14 -6 -6 -14 0 -50 Z';
export const Spark: React.FC<{x: number; y: number; size: number; color: string; rotate?: number; opacity?: number; glow?: boolean}> = ({x, y, size, color, rotate = 0, opacity = 1, glow = false}) => (
  <svg viewBox="-50 -50 100 100" width={size} height={size} style={{position: 'absolute', left: x - size / 2, top: y - size / 2, transform: `rotate(${rotate}deg)`, opacity, overflow: 'visible', filter: glow ? `drop-shadow(0 0 ${size * 0.15}px ${color})` : undefined}}>
    <path d={SPARK_PATH} fill={color} />
  </svg>
);
// ---------------------------------------------------------------- the scene

/**
 * Aqua button: a glossy jelly pill (deep blue body, a glassy highlight on its top half, light pooling at the bottom)
 * bounces in and pulses like an old default button, soap bubbles drift up behind it, the cursor clicks it (it squishes
 * and darkens), a ripple runs out and the label turns into a tick. 4.4 s.
 * Inspired by Mac OS X Aqua buttons and Frutiger Aero buttons (CodePen), redesigned: a jelly squish, bubbles and a
 * done state.
 */
export type AquaProps = Base & {
  label: string;
  done: string;
  color: string; // body colour
  light: string; // top of the body
  bubbles: boolean;
};
export const aquaDefaults: AquaProps = {
  duration: 4.4,
  side: 'right',
  label: 'הורדה',
  done: '✓ הושלם',
  color: '#0A6CFF',
  light: '#7CC4FF',
  bubbles: true,
};

const W = 640;
const H = 460;
const BW = 420;
const BH = 132;

export const Y2kAqua: React.FC<AquaProps> = (props) => {
  const p = {...aquaDefaults, ...props};
  const t = useT();
  const font = p.font ?? HEEBO;
  const total = p.duration!;
  const CLICK = 2.0;
  const pop = spr(t, 0.05, 13, 7);
  const out = inOut(p01(t, total - 0.4, total - 0.05));
  const pulse = t < CLICK ? 0.5 + 0.5 * Math.sin(t * 5) : 0;
  const press = p01(t, CLICK - 0.08, CLICK) * (1 - p01(t, CLICK + 0.08, CLICK + 0.3));
  const squish = t > CLICK ? Math.sin((t - CLICK) * 22) * 0.06 * Math.exp(-(t - CLICK) * 5) : 0;
  const done = t > CLICK + 0.15;
  const ripple = p01(t, CLICK, CLICK + 0.7);
  const bx = (W - BW) / 2;
  const by = (H - BH) / 2 + 20;
  const cin = inOut(p01(t, 1.0, 1.85));
  const cout = inOut(p01(t, 2.5, 3.1));
  const cx = lerp(lerp(W + 40, bx + BW * 0.55, cin), W + 60, cout);
  const cy = lerp(lerp(H + 60, by + BH * 0.55, cin), H + 60, cout);
  const body = done ? '#13B26B' : p.color;
  const top = done ? '#8CF0B8' : p.light;
  return (
    <Stage p={p} w={W} h={H} defSide="right">
      <div style={{position: 'absolute', inset: 0, opacity: 1 - out, transform: `scale(${1 - out * 0.2})`}}>
        {/* bubbles */}
        {p.bubbles &&
          Array.from({length: 10}, (_, i) => {
            const t0 = rnd(i, 1) * 2.2;
            const k = p01(t, t0, t0 + 2.4);
            if (k <= 0 || k >= 1) return null;
            const s = 26 + rnd(i, 2) * 44;
            const x = 60 + rnd(i, 3) * (W - 120) + Math.sin(k * 6 + i) * 18;
            const y = H - 40 - k * (H - 20);
            return (
              <div key={i} style={{position: 'absolute', left: x - s / 2, top: y - s / 2, width: s, height: s, borderRadius: s, opacity: Math.sin(k * Math.PI),
                background: `radial-gradient(circle at 32% 30%, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.25) 22%, ${rgba(p.light, 0.18)} 60%, ${rgba(p.color, 0.35)} 100%)`,
                border: `2px solid ${rgba('#ffffff', 0.7)}`, boxShadow: `inset -4px -6px 10px ${rgba(p.color, 0.25)}`}} />
            );
          })}
        {/* ripple */}
        {ripple > 0 && ripple < 1 && (
          <div style={{position: 'absolute', left: bx - 40, top: by - 40, width: BW + 80, height: BH + 80, borderRadius: BH, border: `${lerp(10, 0, ripple)}px solid ${rgba(body, 0.6 * (1 - ripple))}`,
            transform: `scale(${lerp(0.9, 1.25, outE(ripple))})`}} />
        )}
        {/* the jelly button */}
        <div style={{position: 'absolute', left: bx, top: by, width: BW, height: BH, borderRadius: BH,
          transform: `scale(${pop * (1 - 0.06 * press) * (1 + squish)}, ${pop * (1 - 0.06 * press) * (1 - squish)})`,
          background: `linear-gradient(180deg, ${top} 0%, ${body} 55%, ${body} 75%, ${top} 100%)`,
          boxShadow: `0 ${18 - 8 * press}px ${34 - 10 * press}px ${rgba(body, 0.45)}, 0 0 ${30 * pulse}px ${rgba(top, 0.7 * pulse)}, inset 0 -10px 20px ${rgba('#ffffff', 0.35)}, inset 0 4px 10px ${rgba('#000000', 0.2 * press)}`,
          border: `2px solid ${rgba('#000000', 0.18)}`}}>
          {/* glassy top highlight */}
          <div style={{position: 'absolute', left: BW * 0.07, right: BW * 0.07, top: 6, height: BH * 0.46, borderRadius: `${BH}px ${BH}px ${BH * 0.3}px ${BH * 0.3}px`,
            background: 'linear-gradient(180deg, rgba(255,255,255,0.95), rgba(255,255,255,0.15))'}} />
          <div style={{position: 'absolute', inset: 0, display: 'flex', alignItems: 'center', justifyContent: 'center', fontFamily: font, fontWeight: 800, fontSize: 52,
            color: '#fff', textShadow: `0 2px 4px ${rgba('#000000', 0.35)}`, direction: dirOf(p.label)}}>
            {done ? p.done : p.label}
          </div>
        </div>
        {/* sparkle flare on the gloss */}
        <div style={{position: 'absolute', left: bx + BW * 0.22 + ((t * 120) % (BW * 0.6)), top: by + 18, width: 18, height: 18, borderRadius: 18, background: 'rgba(255,255,255,0.9)',
          boxShadow: '0 0 18px 6px rgba(255,255,255,0.6)', opacity: pop > 0.9 ? 0.8 : 0}} />
        {cin > 0 && cout < 1 && <Cursor x={cx} y={cy} press={press} />}
      </div>
    </Stage>
  );
};

export const meta = {id: 'LibY2kAqua', component: Y2kAqua, defaults: aquaDefaults};