Report System

function reportSystem(input) {
  let requiredSum = Number(input.shift());

  let expectedSum = 0;
  let counter = 1;
  let cardTransactionSum = 0;
  let cashTransactionSum = 0;
  let cardCount = 0;
  let cashCount = 0;

  while (true) {
    let command = input.shift();
    if (command === "End") {
      break;
    }
    if (counter % 2 === 0) {
      expectedSum += cardTransactionSum;
    } else {
      expectedSum += cashTransactionSum;
    }

    if (expectedSum > requiredSum) {
      break;
    }

    if (counter % 2 === 0) {
      if (command < 10) {
        console.log("Error in transaction!");
      } else {
        console.log("Product sold!");
        cardTransactionSum += Number(command);
        cardCount++;
      }
    } else {
      if (command > 100) {
        console.log("Error in transaction!");
      } else {
        console.log("Product sold!");
        cashTransactionSum += Number(command);
        cashCount++;
      }
    }
    counter++;
  }
  if (expectedSum >= requiredSum) {
    let avrCash = cashTransactionSum / cashCount;
    let avrCard = cardTransactionSum / cardCount;
    console.log(`Average CS: ${avrCash.toFixed(2)}`);
    console.log(`Average CC: ${avrCard.toFixed(2)}`);
  } else {
    console.log("Failed to collect required money for charity.");
  }
}