'use strict';
import type { Percentage, Point } from '../types';

export type NormalizedCubicBezierEasing = {
  name: string;
  x1: number;
  y1: number;
  x2: number;
  y2: number;
};

export type NormalizedLinearEasing = {
  name: string;
  points: Point[];
};

export type NormalizedStepsEasing = {
  name: string;
  points: Point[];
};

export type ControlPoint = number | [number, ...Percentage[]];

export type StepsModifier =
  | 'jump-start'
  | 'start'
  | 'jump-end'
  | 'end'
  | 'jump-none'
  | 'jump-both';

export type PredefinedTimingFunction =
  | 'linear'
  | 'ease'
  | 'ease-in'
  | 'ease-out'
  | 'ease-in-out'
  | 'step-start'
  | 'step-end';

export type CSSTimingFunction =
  | PredefinedTimingFunction
  | ParametrizedTimingFunction;

export type NormalizedCSSTimingFunction =
  | PredefinedTimingFunction
  | NormalizedCubicBezierEasing
  | NormalizedLinearEasing
  | NormalizedStepsEasing;

export interface ParametrizedTimingFunction {
  toString(): string;
  normalize(): NormalizedCSSTimingFunction;
}