export interface ITerms {
  cap?: bigint | null;
  height?: (bigint | null)[] | null;
  amount?: bigint | null;
  offset?: (bigint | null)[] | null;
}

export class Terms {
  public cap: bigint | null;
  public height: (bigint | null)[] | null;
  public amount: bigint | null;
  public offset: (bigint | null)[] | null;
  constructor({ cap, height, amount, offset }: ITerms) {
    this.cap = cap ?? null;
    this.height = height ?? null;
    this.amount = amount ?? null;
    this.offset = offset ?? null;
  }
  static fromJson(json: ITerms): Terms {
    return new Terms(json);
  }

  static fromJsonString(str: string): Terms {
    const _obj = JSON.parse(str);
    return Terms.fromJson({
      cap: _obj.cap ? BigInt(_obj.cap) : null,
      height: _obj.height ? [_obj.height[0] === null ? null : BigInt(_obj.height[0]), _obj.height[1] === null ? null : BigInt(_obj.height[1])] : null,
      amount: _obj.amount ? BigInt(_obj.amount) : null,
      offset: _obj.offset ? [_obj.offset[0] === null ? null : BigInt(_obj.offset[0]), _obj.offset[1] === null ? null : BigInt(_obj.height[1])] : null,
    });
  }
  toJsonString(): string {
    return JSON.stringify({
      cap: this.cap?.toString(),
      height: this.height?.toString(),
      amount: this.amount?.toString(),
      offset: this.offset?.toString(),
    });
  }
}