import type { BaseLayer } from "./base-layer";

export type ColorAdjustment = {
  brightness: number;
  contrast: number;
  saturation: number;
  colorBalance: { red: number; green: number; blue: number };
};

/**
 * A non-destructive adjustment affecting pixels already composited beneath it
 * on its artboard. Adjustment layers are top-level artboard nodes so live WebGL
 * and exported PNG compositing have identical scope. Transform and masks are
 * intentionally unsupported.
 */
export type AdjustmentLayer = BaseLayer & {
  type: "adjustment";
  adjustment: ColorAdjustment;
};

export const neutralColorAdjustment: ColorAdjustment = {
  brightness: 0,
  contrast: 0,
  saturation: 0,
  colorBalance: { red: 0, green: 0, blue: 0 },
};