export class PointsTable {
  private readonly pointsByPosition: Map<number, number>;

  constructor(pointsByPosition: Record<number, number> | Map<number, number>) {
    if (pointsByPosition instanceof Map) {
      this.pointsByPosition = new Map(pointsByPosition);
    } else {
      this.pointsByPosition = new Map(
        Object.entries(pointsByPosition).map(([key, value]) => [Number(key), value]),
      );
    }
  }

  getPointsForPosition(position: number): number {
    if (!Number.isInteger(position) || position < 1) {
      return 0;
    }
    const value = this.pointsByPosition.get(position);
    return typeof value === 'number' ? value : 0;
  }
}