03. Heart Delivery

function heartDelivery(array) {
    let list=array.shift().split('@');
    let lastIndex=0;

    let already0Indexes=[]
    for(let i=0;i<array.length && array[i]!=='Love! ';i++){
        let currentCommand=array[i].split(' ');
        let currentIndex=lastIndex+Number(currentCommand[1]);

        if(currentIndex>=list.length){
            currentIndex=0;
        }
        list[currentIndex]-=2;
        if(list[currentIndex]<=0 && already0Indexes.includes(currentIndex)===false){
            already0Indexes.push(currentIndex);
            console.log(`Place ${currentIndex} has Valentine's day.`);
        }else if(list[currentIndex]<=0 && already0Indexes.includes(currentIndex)){
            console.log(`Place ${currentIndex} already had Valentine's day.`);
            list[currentIndex]=0;
        }
        lastIndex=currentIndex;
    }

    console.log(`Cupid's last position was ${lastIndex}.`);
    if(list.every((element)=>element===0)){
        console.log(`Mission was successful.`);
    }else{
        let failCounter=0;
        for(let i=0;i<list.length;i++){
            if(list[i]!==0){
                failCounter++;
            }
        }
        console.log(`Cupid has failed ${failCounter} places.`);
    }
}