5. *Star Enigma - JS regEx exercise

function solve(inputArr) {

    let messageCount = inputArr.shift();
    let attackedPlanets = [];
    let destroyedPlanets = [];
    let decryptionKey = '';

    const regExKey = /[SsTtAaRr]/g;
    const regExValidator = /[^@\-:!>]*@([A-Za-z]+)[^@\-:!>]*:(\d+)[^@\-:!>]*!([A|D])![^@\-:!>]*->(\d+)/;

    for (let m = 0; m < messageCount; m++) {
        let message = inputArr[m];

        if (!message.match(regExKey)) {
            decryptionKey = 0;
        } else {
            decryptionKey = message.match(regExKey).length;
        }

        let decodedMessage = [];

        for (let i = 0; i < message.length; i++) {

            let decoded = message[i].charCodeAt(0) - decryptionKey;
            let realSymbol = String.fromCharCode(decoded);

            decodedMessage.push(realSymbol);
        }

        decodedMessage = decodedMessage.join('');

        if (decodedMessage.match(regExValidator)) {

            let planetName = decodedMessage.match(regExValidator)[1];
            let action = decodedMessage.match(regExValidator)[3];

            if (action === 'A') {
                attackedPlanets.push(planetName);
            } else if (action === 'D') {
                destroyedPlanets.push(planetName);
            }
        }
    }

    let attackedPlanetsCount = attackedPlanets.length;
    let attackedPlanetsList = attackedPlanets
        .sort((a, b) => a.localeCompare(b));

    let destroyedPlanetsCount = destroyedPlanets.length;
    let destroyedPlanetsList = destroyedPlanets
        .sort((a, b) => a.localeCompare(b));

    console.log(`Attacked planets: ${attackedPlanetsCount}`);
    attackedPlanetsList.forEach(x => console.log(`-> ${x}`));

    console.log(`Destroyed planets: ${destroyedPlanetsCount}`);
    destroyedPlanetsList.forEach(x => console.log(`-> ${x}`));
}