Star Enigma

function solve(input) {
  let pattern = /[star]/gim;
  let messages = Number(input.shift());
  let decryptedMessages = [];
  for (let i = 0; i < messages; i++) {
    let message = input.shift();
    let match = message.match(pattern);
    if (match) {
      let countSymbols = match.length;
      let decryptedMessage = [];

      for (let i = 0; i < message.length; i++) {
        let symbolIndex = message[i].charCodeAt(0);
        let newSymbolIndex = symbolIndex - countSymbols;
        let newSymbol = String.fromCharCode(newSymbolIndex);

        decryptedMessage.push(newSymbol);
      }
      decryptedMessages.push(decryptedMessage.join(""));
    } else {
      let countSymbols = 0;
      let decryptedMessage = [];

      for (let i = 0; i < message.length; i++) {
        let symbolIndex = message[i].charCodeAt(0);
        let newSymbolIndex = symbolIndex - countSymbols;
        let newSymbol = String.fromCharCode(newSymbolIndex);

        decryptedMessage.push(newSymbol);
      }
      decryptedMessages.push(decryptedMessage.join(""));
    }
  }

  let atackedPlanets = [];
  let destroyedPlanets = [];

  for (let item of decryptedMessages) {
    let patternTwo = /@(?<name>[A-Za-z]+)[^@\-!:>]*:(?<population>[0-9]+)[^@\-!:>]*![^@\-!:>]*(?<attackType>[A|D])![^@\-!:>]*\->(?<soldierCount>[0-9]+)/;
    let match = patternTwo.exec(item);
    if (match && match.groups.attackType === "A") {
      atackedPlanets.push(match.groups.name);
    } else if (match && match.groups.attackType === "D") {
      destroyedPlanets.push(match.groups.name);
    }
  }

  let sortedAttackedPlanets = atackedPlanets.sort((a, b) => a.localeCompare(b));
  let sortedDestroyedPlanets = destroyedPlanets.sort((a, b) =>
    a.localeCompare(b)
  );

  if (sortedAttackedPlanets.length > 0) {
    console.log(`Attacked planets: ${sortedAttackedPlanets.length}`);
    for (let planet of sortedAttackedPlanets) {
      console.log(`-> ${planet}`);
    }
  } else {
    console.log(`Attacked planets: 0`);
  }

  if (sortedDestroyedPlanets.length > 0) {
    console.log(`Destroyed planets: ${sortedDestroyedPlanets.length}`);
    for (let planet of sortedDestroyedPlanets) {
      console.log(`-> ${planet}`);
    }
  } else {
    console.log(`Destroyed planets: 0`);
  }
}