trucks exam prep

function solve() {
    const allTrucks=[];
    const allTires=[];
    let allFieldSets=document.querySelectorAll('fieldset');
   Array.from(document.getElementsByTagName("button")).forEach(el=>{
        el.addEventListener("click",(e)=>DoAction(e));
    });

    function DoAction(e){

        let buttonName=e.target.innerHTML;

        switch(buttonName){
            case "Add new truck":
            CreateTruck();
            break;
            case "Add new tires":
            CreateTyres();
            break;
            case "Go to work":
            Work();
            break;
            case "End of the shift":
            Report();
            break;
        }
    }

    function CreateTruck(){
        let plate=document.getElementById("newTruckPlateNumber").value;
        let truckTires=document.getElementById("newTruckTiresCondition").value.split(' ').filter(Boolean).map(Number);
        let newTruck={
            "truckPlate":plate,
            "Tires":truckTires,
            "Miles":0
        }
        allTrucks.push(newTruck);
        let trucksDiv=allFieldSets[4].getElementsByTagName('div')[0];
        let newTruckDiv=document.createElement("div");
        newTruckDiv.innerHTML=newTruck.truckPlate;
        newTruckDiv.setAttribute("class","truck");
        trucksDiv.appendChild(newTruckDiv);
        console.log(newTruck.truckPlate);
    }
    function CreateTyres(){
        let newTyres=document.getElementById("newTiresCondition").value.split(' ').filter(Boolean).map(Number);
        allTires.push(newTyres);
        let tyresDiv=allFieldSets[3].getElementsByTagName('div')[0];
        let newTyreDiv=document.createElement("div");
        newTyreDiv.setAttribute("class","tireSet");
        newTyreDiv.textContent=newTyres.join(" ");

        tyresDiv.appendChild(newTyreDiv);
    }
    function Work(){
        let distance=+document.getElementById("distance").value;
        let truckPlate=document.getElementById("workPlateNumber").value;
        let truck=allTrucks.reduce((prev, curr)=>{ return (curr.truckPlate === truckPlate) ? curr : prev; }, null);

        if(truck===null){
            return;
        }
        let tyreExhaust=Math.floor(distance/1000);
        let enoughTyresLeft=truck.Tires.every(x=>x-tyreExhaust>=0);
        if(enoughTyresLeft){
            truck.Miles+=distance;
            let newTyresLife=truck.Tires.map(x=>x-tyreExhaust);
            truck.Tires=newTyresLife;
            return;
        }
        if(!allTires.length){
            return;
        }
        let newTyreComplect=allTires.shift();
        let tyresDiv=allFieldSets[3].getElementsByTagName('div')[0];
        let divToRemove=document.getElementsByClassName("tireSet")[0];
        tyresDiv.removeChild(divToRemove);
        let refreshedTires=[];
        let count=0;
       for (let tire of truck.Tires) {
          tire+=newTyreComplect[count];
          refreshedTires.push(tire);
       }
       truck.Tires=refreshedTires;
       enoughTyresLeft=truck.Tires.every(x=>x-tyreExhaust>=0);
       if(enoughTyresLeft){
           truck.Miles+=distance;
           let newTyresLife=truck.Tires.map(x=>x-tyreExhaust);
           truck.Tires=newTyresLife;
           return;
       }
    }
    function Report(){
        let report="";
        let reportField=document.querySelector("section textarea");
        console.log("found the area");
        for (i = 0; i < allTrucks.length; i++){
            report+=`Truck ${allTrucks[i].truckPlate} has traveled ${allTrucks[i].Miles}.\n`
        }
        report+=`You have ${allTires.length} sets of tires left.\n`;
        reportField.textContent=report;
    }
}