moving target - mid exam - viarno reshenie

function movingTarget(input) {
  let sequenceOfTargets = input.shift().split(" ").map(Number);
  while (input.length > 0) {
    let command = input.shift();

    if (command == "End") {
      break;
    }
    let curCommand = command.split(" ")[0];
    switch (curCommand) {
      case "Shoot":
        let indexOfShoot = Number(command.split(" ")[1]);
        let power = Number(command.split(" ")[2]);
        if (indexOfShoot >= 0 && indexOfShoot < sequenceOfTargets.length) {
          sequenceOfTargets[indexOfShoot] -= power;
          if (sequenceOfTargets[indexOfShoot] <= 0) {
            sequenceOfTargets.splice(indexOfShoot, 1);
          }
        }
        break;
      case "Add":
        let indexOfAdd = Number(command.split(" ")[1]);
        let value = Number(command.split(" ")[2]);
        if (indexOfAdd >= 0 && indexOfAdd < sequenceOfTargets.length) {
          sequenceOfTargets.splice(indexOfAdd, 0, value);
        } else {
          console.log(`Invalid placement!`);
        }
        break;
      case "Strike":
        let indexOfStrice = Number(command.split(" ")[1]);
        let radius = Number(command.split(" ")[2]);
        if (indexOfStrice >= 0 && indexOfStrice < sequenceOfTargets.length) {
          if (
            indexOfStrice - radius >= 0 &&
            indexOfStrice + radius < sequenceOfTargets.length
          ) {
            sequenceOfTargets.splice(
              indexOfStrice - radius,
              radius + radius + 1
            );
          } else {
            console.log(`Strike missed!`);
          }
        }
        break;
    }
  }

  console.log(sequenceOfTargets.join("|"));

  function shootCommand(arr, index, power) {
    let curItem = arr[index];
    let itemForRemove = arr[index];

    if (curItem == undefined) {
      return arr;
    }
    if (index <= arr.length - 1) {
      curItem = curItem - power;
    }
    if (curItem <= 0) {
      arr = arr.filter((x) => x != itemForRemove);
    } else {
      arr[index] = curItem;
    }
    return arr;
  }
}