const MINIMUM_THRESHOLD = 100;

export class SnapPoints {
  windowHeight: number;
  contentHeight: number;

  constructor(windowHeight, contentHeight) {
    this.windowHeight = windowHeight;
    this.contentHeight = contentHeight;
  }

  get values() {
    return [
      this.windowHeight - this.contentHeight,
      Math.max(this.windowHeight - this.contentHeight / 2, MINIMUM_THRESHOLD),
      this.windowHeight,
    ];
  }

  get top() {
    return this.values[0];
  }

  get bottom() {
    return this.values[2];
  }

  get threshold() {
    return this.values[1];
  }
}