class VeterinaryClinic{
    constructor (clinicName, capacity){
        this.clinicName=clinicName;
        this.capacity=capacity;
        this.clients=[];
        this.totalProfit=0;
        this.currentWorkLoad=0;
    }
    newCustomer(ownerName, petName, kind, procedures){
        if (this.clients.length >=this.capacity) {
            throw new Error("Sorry, we are not able to accept more patients!")
        } else if (this.clients.find(a => a.petName===petName )) {
            let proceds=procedures.join(", ");
            let e= `This pet is already registered under ${ ownerName } name! ${ petName } is on our lists, waiting for ${proceds}.`;
            throw new Error(e)
        } else {
            this.clients.push({ownerName, petName, kind, procedures});
            return `Welcome ${ petName }!`;
        }
    }
    onLeaving (ownerName, petName) {
        let clientObj=this.clients.find(a => a.ownerName===ownerName);

        if (!this.clients.find(a => a.ownerName===ownerName)) {
            throw new Error("Sorry, there is no such client!")
        } else if (this.clients.find(a => a.ownerName===ownerName) && !clientObj.petName==petName) {
            throw new Error(`Sorry, there are no procedures for ${ petName }!`)
        } else {
           this.totalProfit += clientObj.procedures.length*500;
            const index = this.clients.indexOf(clientObj);
if (index > -1) {
  this.clients.splice(index, 1);
}

            return `Goodbye ${ petName }. Stay safe!`
        }

    }



    toString (){
        let busynesPercent=(+this.clients.length/+this.capacity)*100;
        let output=`${ this.clinicName } is ${ Math.floor(busynesPercent) }% busy today!`
output+=`\nTotal profit: ${ this.totalProfit }$`
let ownersInfo=this.clients.forEach(el => {
    let procedures2=el.procedures.join(", ");
    output+=`${ el.ownerName } with:
    ---${ el.petName } - a ${ el.kind } that needs: ${procedures2}"
    `
});
return output;
    }
}