import { Composition, Layer, FontManager } from "gitframes";

// Always register fonts before assembling layers
await FontManager.register({
  family: "Inter",
  source: "assets/fonts/Inter.ttf"
});

const comp = new Composition({
  width: 1920,
  height: 1080,
  fps: 30,
  durationMs: 10000, // or computeDuration()
  backgroundColor: "#0E0D0C",
  fonts: ["assets/fonts/Inter.ttf"],
});

comp.add(Layer.box({ /* ... */ }));
comp.add(Layer.audio("assets/score.mp3", { volume: 1 }));

// theme.ts
export const W = 1920;
export const H = 1080;
export const FPS = 30;
export const BEAT = 18; // 100 BPM at 30 fps
export const beats = (n: number) => Math.round(n * BEAT);

export const INK = "#0E0D0C";
export const PAPER = "#EEE9E0";
export const EMBER = "#FF5A1F";

export function scene(options: { id: string; from: number; to: number; children: unknown[] }) {
  return Layer.box({
    id: options.id,
    position: "absolute",
    x: 0,
    y: 0,
    width: W,
    height: H,
    startFrame: options.from,
    durationFrames: options.to - options.from,
    children: options.children as never,
  });
}

import { LayerAnimation } from "gitframes";

// Fluent chain
const anim = LayerAnimation.create()
  .fadeIn(0, 20, "power2.out")
  .fromTo("y", 60, 0, { start: 0, end: 24, ease: "expo.out" })
  .fromTo("scale", 0.95, 1.0, { start: 0, end: 30, ease: "power3.out" });

// Easing bases: none, power1, power2, power3, sine, circ, expo, back, elastic, bounce, spring, cubic, hold
// Directions: in, out, inOut (e.g. "expo.out", "back.out(1.7)", "power2.inOut")

const pop = LayerAnimation.create()
  .keys("scale", [[0, 0], [10, 1.12, "back.out(1.6)"], [16, 1, "power2.out"]])
  .keys("opacity", [[0, 0], [6, 1]]);
// Static form: LayerAnimation.keys("rotation", [[0, -8], [20, 0, "expo.out"]])

import { Layer, LayerAnimation, TextAnimator } from "gitframes";

// Letter-by-letter wave rise with perspective tilt and blur
const headlineNode = Layer.text("PRECISION MOTION", {
  fontSize: 96,
  fontFamily: "Inter",
  fill: "#FFFFFF",
  animators: [
    TextAnimator.waveRise({
      y: 40,
      rotationX: 45,
      opacity: 0,
      blur: 10,
      easing: "expo.in"
    })
  ]
}).animate(
  // Sweep the selection offset across the text string
  LayerAnimation.create().kineticSweep(-1, 1, 0, 24, "power2.inOut")
);

const card = Layer.box({
  width: 600,
  height: 400,
  background: "#181715",
  borderRadius: 24,
  transformStyle: "preserve-3d",
  perspective: 1200,
}).animate(
  LayerAnimation.create()
    .fromTo("rotateX", 25, 0, { start: 0, end: 30, ease: "expo.out" })
    .fromTo("rotateY", -35, 0, { start: 0, end: 30, ease: "expo.out" })
    .fromTo("translateZ", -200, 0, { start: 0, end: 30, ease: "expo.out" })
);

import { CameraAnimation } from "gitframes";

const camAnim = CameraAnimation.camera()
  .orbit({
    azimuth: { from: -45, to: 15 },
    elevation: { from: 10, to: 25 },
    radius: { from: 2000, to: 1400 },
    start: 0,
    end: 90,
    ease: "sine.inOut"
  })
  .rackFocus({
    fromDistance: 2000,
    toDistance: 1400,
    fromFStop: 1.8,
    toFStop: 4.0,
    start: 20,
    end: 60
  });

// Organic floating drift
const floatAnim = LayerAnimation.create()
  .wiggle("x", { frequency: 1.5, amplitude: 25 })
  .wiggle("y", { frequency: 1.2, amplitude: 20 });

// Physics spring overshoot
const springAnim = LayerAnimation.create()
  .spring("scale", { damping: 14, stiffness: 190, mass: 1 });

// Audio reactivity: pass the signal object straight in…
const kick = Signal.fromArray(kickEnvelope, fps); // or Signal.builder({ type: "custom", fn })
const beatAnim = LayerAnimation.create()
  .signal("scale", kick, { multiplier: 0.12, offset: 1.0, smoothing: 2 });

// …or register it once by name and bind the name (handy when many layers share it)
comp.addSignal("drum_stem_signal", kick);
const beatAnim2 = LayerAnimation.create()
  .signal("opacity", "drum_stem_signal", { multiplier: 0.5, offset: 0.5 });