import { Request } from "firebase-functions";

class Utils {
  static parseInput(request: Request): string[] {

    const body = request.body;
    if (typeof body === "string") {
      return body.split("\n");
    } else if (body.constructor === Array) {
      return body;
    } else {
      throw Error("Invalid request");
    }
  }

  static sum(values: number[]): number {
    return values.reduce((a, b) => a + b);
  }

  static bigSum(values: bigint[]): bigint {
    return values.reduce((a, b) => a + b);
  }

  static zeroes(length: number): number[] {

    const res = [];
    for (let i = 0; i < length; i++) {
      res.push(0);
    }
    return res;
  }
}

export default Utils;