/**
 * File upload + success / העלאת קובץ  (student motion library, id "ui-upload")
 * Use: copy this file into your Remotion project and register it in your Root:
 *   <Composition id="LibUiUpload" component={UiUpload} width={1920} height={1080} fps={30}
 *     durationInFrames={144} defaultProps={uploadDefaults} />
 * Render transparent: npx remotion render src/index.ts LibUiUpload out.webm --codec=vp9 --pixel-format=yuva420p --image-format=png --props=props.json
 * Change the words / colours / side in props.json (same keys as uploadDefaults). 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

/**
 * Upload: a dashed drop zone appears, a video file flies in and drops, its progress bar fills (with a stutter, like a
 * real upload) and turns into a tick with a little sparkle. 4.8 s.
 * Inspired by "Loading Spinner Success" (Jitter) and "Upload Progress Success Button" (LottieFiles), redesigned: a drop
 * zone + file card instead of a button.
 */
export type UploadProps = Base & {
  fileName: string;
  fileSize: string;
  ext: string;
  zoneText: string;
  doneText: string;
  accent: string; // progress + success colour
  fileColor: string; // the file badge colour
};
export const uploadDefaults: UploadProps = {
  duration: 4.8,
  side: 'right',
  fileName: 'הריל_הסופי.mp4',
  fileSize: '48 MB',
  ext: 'MP4',
  zoneText: 'גררו לכאן קובץ',
  doneText: 'הועלה!',
  accent: '#16B67A',
  fileColor: '#7C5CFF',
};

const W = 660;
const H = 420;
const CW = 520;
const CH = 132;

export const UiUpload: React.FC<UploadProps> = (props) => {
  const p = {...uploadDefaults, ...props};
  const t = useT();
  const font = p.font ?? HEEBO;
  const rtl = dirOf(p.fileName + p.zoneText) === 'rtl';
  const fly = inOut(p01(t, 0.55, 1.3));
  const over = p01(t, 0.95, 1.2);
  const land = spr(t, 1.3, 20, 10);
  // progress with a stutter in the middle
  const u = p01(t, 1.5, 3.3);
  const prog = u < 0.45 ? inOut(u / 0.45) * 0.58 : u < 0.6 ? 0.58 + (u - 0.45) * 0.2 : 0.61 + inOut((u - 0.6) / 0.4) * 0.39;
  const done = t >= 3.35;
  const tick = spr(t, 3.35, 17, 8);
  const zoneIn = outE(p01(t, 0.05, 0.45));
  const cx = lerp(rtl ? -160 : W + 160, (W - CW) / 2, fly);
  const cy = lerp(-220, (H - CH) / 2, fly);
  const rot = lerp(rtl ? 10 : -10, 0, fly);
  const lift = lerp(1.08, 1, land) * (t < 1.3 ? 1.08 : 1);
  const col = done ? p.accent : p.fileColor;
  return (
    <Stage p={p} w={W} h={H} defSide="right">
      <div style={{position: 'absolute', inset: 0, ...lifeStyle(t, p.duration!, 0.3, 0.4), fontFamily: font, direction: rtl ? 'rtl' : 'ltr'}}>
        {/* drop zone */}
        <div style={{position: 'absolute', inset: 0, borderRadius: 44, opacity: zoneIn, transform: `scale(${lerp(0.94, 1, zoneIn) * (1 + 0.025 * over * (1 - p01(t, 1.3, 1.6)))})`,
          background: `linear-gradient(160deg, ${rgba('#ffffff', 0.92)}, ${rgba('#f3f2f8', 0.9)})`, boxShadow: SHADOW}}>
          <div style={{position: 'absolute', inset: 18, borderRadius: 30, border: `4px dashed ${over > 0 ? rgba(p.accent, 0.4 + 0.6 * over) : 'rgba(22,21,26,0.18)'}`,
            background: rgba(p.accent, 0.07 * over)}} />
          <div style={{position: 'absolute', left: 0, right: 0, top: 120, display: 'flex', flexDirection: 'column', alignItems: 'center', gap: 16,
            opacity: 1 - p01(t, 0.9, 1.15)}}>
            <svg viewBox="0 0 48 48" width={92} height={92}>
              <path d="M14 34h-2a9 9 0 0 1-1-17.9A12 12 0 0 1 34.5 13 8.5 8.5 0 0 1 36 30h-2" fill="none" stroke="rgba(22,21,26,0.35)" strokeWidth={3} strokeLinecap="round" />
              <path d="M24 40V22M17 28l7-7 7 7" fill="none" stroke={p.accent} strokeWidth={3.4} strokeLinecap="round" strokeLinejoin="round" />
            </svg>
            <div style={{fontSize: 34, fontWeight: 500, color: 'rgba(22,21,26,0.55)'}}>{p.zoneText}</div>
          </div>
        </div>
        {/* the file card */}
        <div style={{position: 'absolute', left: cx, top: cy, width: CW, height: CH, borderRadius: 28, background: '#fff', boxShadow: '0 26px 50px rgba(10,10,20,0.22), 0 4px 12px rgba(10,10,20,0.12)',
          transform: `rotate(${rot}deg) scale(${lift})`, display: 'flex', alignItems: 'center', gap: 22, padding: '0 24px', boxSizing: 'border-box',
          border: done ? `3px solid ${rgba(p.accent, tick)}` : '3px solid transparent'}}>
          <div style={{width: 84, height: 96, borderRadius: 16, background: col, flexShrink: 0, position: 'relative', display: 'flex', alignItems: 'flex-end', justifyContent: 'center', paddingBottom: 14, boxSizing: 'border-box'}}>
            <div style={{position: 'absolute', top: 0, [rtl ? 'left' : 'right']: 0, width: 26, height: 26, background: 'rgba(255,255,255,0.35)', borderRadius: rtl ? '16px 0 10px 0' : '0 16px 0 10px'}} />
            <span style={{color: '#fff', fontWeight: 800, fontSize: 22, letterSpacing: 1, fontFamily: font}}>{p.ext}</span>
          </div>
          <div style={{flex: 1, minWidth: 0}}>
            <div style={{fontSize: 32, fontWeight: 700, color: '#16151a', whiteSpace: 'nowrap', overflow: 'hidden', textOverflow: 'ellipsis', direction: dirOf(p.fileName)}}>{p.fileName}</div>
            <div style={{display: 'flex', justifyContent: 'space-between', fontSize: 23, color: 'rgba(22,21,26,0.5)', marginTop: 4}}>
              <span style={{unicodeBidi: 'isolate'}}>{done ? p.doneText : t > 1.45 ? `${Math.round(prog * 100)}%` : ''}</span>
              <span style={{direction: 'ltr', unicodeBidi: 'isolate'}}>{p.fileSize}</span>
            </div>
            <div style={{height: 12, borderRadius: 12, background: 'rgba(22,21,26,0.08)', marginTop: 10, overflow: 'hidden', opacity: 1 - p01(t, 3.35, 3.6)}}>
              <div style={{height: '100%', width: `${prog * 100}%`, borderRadius: 12, background: `linear-gradient(90deg, ${p.accent}, ${rgba(p.accent, 0.7)})`, marginInlineStart: 0}} />
            </div>
          </div>
          {done && (
            <div style={{position: 'absolute', top: -30, [rtl ? 'left' : 'right']: -30, width: 76, height: 76, borderRadius: 76, background: p.accent, transform: `scale(${tick})`,
              boxShadow: `0 8px 20px ${rgba(p.accent, 0.45)}`, display: 'flex', alignItems: 'center', justifyContent: 'center'}}>
              <svg viewBox="0 0 24 24" width={44} height={44}>
                <path d="M5 12.5l4.5 4.5L19 7.5" fill="none" stroke="#fff" strokeWidth={3.2} strokeLinecap="round" strokeLinejoin="round"
                  strokeDasharray={24} strokeDashoffset={24 * (1 - outE(p01(t, 3.42, 3.7)))} />
              </svg>
            </div>
          )}
        </div>
        {done &&
          [0, 1, 2, 3].map((i) => {
            const k = outE(p01(t, 3.4 + i * 0.05, 3.95 + i * 0.05));
            const a = -Math.PI / 2 + (i - 1.5) * 0.7;
            const ox = rtl ? (W - CW) / 2 + 8 : (W + CW) / 2 - 8;
            const oy = (H - CH) / 2 + 8;
            return <Spark key={i} x={ox + Math.cos(a) * 90 * k} y={oy + Math.sin(a) * 90 * k} size={(i % 2 ? 26 : 36) * Math.sin(k * Math.PI)} color={i % 2 ? '#FFC53D' : p.accent} rotate={k * 90} />;
          })}
      </div>
    </Stage>
  );
};

export const meta = {id: 'LibUiUpload', component: UiUpload, defaults: uploadDefaults};