/**
 * Loading bar 2002 / פס טעינה 2002  (student motion library, id "y2k-loading-2002")
 * Use: copy this file into your Remotion project and register it in your Root:
 *   <Composition id="LibY2kLoading" component={Y2kLoading} width={1920} height={1080} fps={30}
 *     durationInFrames={138} defaultProps={loadingDefaults} />
 * Render transparent: npx remotion render src/index.ts LibY2kLoading out.webm --codec=vp9 --pixel-format=yuva420p --image-format=png --props=props.json
 * Change the words / colours / side in props.json (same keys as loadingDefaults). A vertical video: width 1080, height 1920.
 */
import {loadFont as loadPixel} from '@remotion/google-fonts/PressStart2P';
// ---------------------------------------------------------------- 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

const pixel = loadPixel('normal', {weights: ['400'], subsets: ['latin']});

/**
 * Loading, 2002 style: a beveled navy panel with "Loading... please wait", chunky glowing blocks fill the bar one by
 * one (with the classic stall near the end), a pixel percent counter, a hourglass that flips, and a scrolling
 * marquee line under it; at 100% it flashes "DONE". 4.6 s.
 * Inspired by the Windows 98 loading bar and block progress bars (CodePen), redesigned: navy + lime "2002 website"
 * look with a marquee and an hourglass.
 */
export type LoadingProps = Base & {
  title: string;
  marquee: string;
  done: string;
  blocks: number;
  panel: string;
  block: string;
  block2: string;
};
export const loadingDefaults: LoadingProps = {
  duration: 4.6,
  side: 'right',
  title: 'טוען... אנא המתינו',
  marquee: '★ ברוכים הבאים לאתר שלי ★ הכי מגניב ברשת ★ ',
  done: 'הושלם!',
  blocks: 16,
  panel: '#14185C',
  block: '#9CFF2E',
  block2: '#2EE6FF',
};

const W = 720;
const H = 330;

export const Y2kLoading: React.FC<LoadingProps> = (props) => {
  const p = {...loadingDefaults, ...props};
  const t = useT();
  const font = p.font ?? HEEBO;
  const total = p.duration!;
  const rtl = dirOf(p.title) === 'rtl';
  const appear = Math.floor(p01(t, 0.05, 0.3) * 3) / 3;
  const gone = Math.floor(p01(t, total - 0.35, total - 0.05) * 3) / 3;
  // progress in steps, with the classic stall at ~90%
  const u = p01(t, 0.45, 3.35);
  const prog = u < 0.7 ? (u / 0.7) * 0.88 : u < 0.88 ? 0.88 + (u - 0.7) * 0.1 : 0.9 + (u - 0.88) / 0.12 * 0.1;
  const filled = Math.floor(prog * p.blocks + 0.001);
  const pct = Math.min(100, Math.floor(prog * 100));
  const done = t >= 3.4;
  const flash = done && Math.floor((t - 3.4) * 6) % 2 === 0;
  const hg = Math.floor(t * 2) % 2 ? 180 : 0;
  const bev = (light: string, dark: string, w = 4): React.CSSProperties => ({
    borderTop: `${w}px solid ${light}`, borderLeft: `${w}px solid ${light}`, borderBottom: `${w}px solid ${dark}`, borderRight: `${w}px solid ${dark}`, boxSizing: 'border-box',
  });
  const mq = p.marquee.repeat(3);
  return (
    <Stage p={p} w={W} h={H} defSide="right">
      <div style={{position: 'absolute', inset: 0, opacity: appear * (1 - gone), background: p.panel, ...bev('#5a63d6', '#05072a', 6), boxShadow: '10px 10px 0 rgba(0,0,0,0.3)',
        fontFamily: font, overflow: 'hidden'}}>
        <div style={{position: 'absolute', top: 28, left: 34, right: 34, display: 'flex', alignItems: 'center', gap: 20, direction: rtl ? 'rtl' : 'ltr'}}>
          <svg viewBox="0 0 20 28" width={40} height={56} style={{transform: `rotate(${hg}deg)`}} shapeRendering="crispEdges">
            <rect x={2} y={0} width={16} height={3} fill="#fff" />
            <rect x={2} y={25} width={16} height={3} fill="#fff" />
            <path d="M4 3 H16 V7 L11 14 L16 21 V25 H4 V21 L9 14 L4 7 Z" fill="none" stroke="#fff" strokeWidth={2} />
            <path d="M6 22 H14 V24 H6 Z M7 6 H13 L10 10 Z" fill={p.block} />
          </svg>
          <div style={{color: '#fff', fontSize: 38, fontWeight: 800}}>{done ? p.done : p.title}</div>
          <div style={{flex: 1}} />
          <div style={{fontFamily: pixel.fontFamily, fontSize: 30, color: p.block, direction: 'ltr'}}>{pct}%</div>
        </div>
        {/* the bar */}
        <div style={{position: 'absolute', left: 34, right: 34, top: 120, height: 74, background: '#05072a', ...bev('#05072a', '#5a63d6', 4), padding: 6,
          display: 'flex', gap: 6, direction: rtl ? 'rtl' : 'ltr'}}>
          {Array.from({length: p.blocks}, (_, i) => (
            <div key={i} style={{flex: 1, background: i < filled ? (flash ? '#ffffff' : `linear-gradient(180deg, ${p.block}, ${p.block2})`) : 'transparent',
              boxShadow: i < filled ? `0 0 10px ${p.block}` : undefined}} />
          ))}
        </div>
        {/* marquee */}
        <div style={{position: 'absolute', left: 0, right: 0, top: 230, height: 60, background: '#000', borderTop: '3px solid #5a63d6', overflow: 'hidden'}}>
          <div style={{position: 'absolute', top: 10, whiteSpace: 'pre', fontSize: 30, fontWeight: 700, color: '#FFE600', direction: 'rtl',
            [rtl ? 'right' : 'left']: -(t * 180) - 200}}>{mq}</div>
        </div>
      </div>
    </Stage>
  );
};

export const meta = {id: 'LibY2kLoading', component: Y2kLoading, defaults: loadingDefaults};