carDealership

class CarDealership {
    constructor(name) {
        this.name = name;
        this.availableCars = [];
        this.soldCars = [];
        this.totalIncome = 0;
    }
    addCar(model, horsepower, price, mileage) {
        if (
            model == '' ||
            horsepower < 0 ||
            !Number.isInteger(horsepower) ||
            price < 0 ||
            mileage < 0
        ) {
            throw new Error('Invalid input!');
        }
        this.availableCars.push({ model, horsepower, price, mileage });
        return `New car added: ${model} - ${horsepower} HP - ${mileage.toFixed(
            2
        )} km - ${price.toFixed(2)}$`;
    }
    sellCar(model, desiredMileage) {
        let searchedCar = this.availableCars.find((o) => o.model == model);
        if (!searchedCar) {
            throw new Error(`${model} was not found!`);
        }
        if (searchedCar.mileage - desiredMileage > 40000) {
            searchedCar.price *= 0.9;
        } else if (
            searchedCar.mileage - desiredMileage <= 40000 &&
            searchedCar.mileage - desiredMileage > 0
        ) {
            searchedCar.price *= 0.95;
        }
        let soldCarIndex = this.availableCars.findIndex(
            (o) => o == searchedCar
        );
        this.availableCars.splice(soldCarIndex, 1);
        this.soldCars.push({
            model: searchedCar.model,
            horsepower: searchedCar.horsepower,
            soldPrice: searchedCar.price,
        });
        this.totalIncome += searchedCar.price;
        return `${model} was sold for ${searchedCar.price.toFixed(2)}$`;
    }

    currentCar() {
        if (this.availableCars.length == 0) {
            return 'There are no available cars';
        }
        let result = [];
        result.push('-Available cars:');
        this.availableCars.forEach((o) =>
            result.push(
                `---${o.model} - ${o.horsepower} HP - ${o.mileage.toFixed(
                    2
                )} km - ${o.price.toFixed(2)}$`
            )
        );
        return result.join('\n');
    }

    salesReport(criteria) {
        let sorted;
        let availableCriteria = ['horsepower', 'model'];
        if (!availableCriteria.includes(criteria)) {
            throw new Error('Invalid criteria!');
        }
        if (criteria == 'model') {
            sorted = this.soldCars.sort((a, b) =>
                a.model.localeCompare(b.model)
            );
        } else {
            sorted = this.soldCars.sort((a, b) => b.horsepower - a.horsepower);
        }
        let result2 = [];
        result2.push(
            `-${this.name} has a total income of ${this.totalIncome.toFixed(
                2
            )}$`
        );
        result2.push(`-${sorted.length} cars sold:`);
        sorted.forEach((o) =>
            result2.push(
                `---${o.model} - ${o.horsepower} HP - ${o.soldPrice.toFixed(
                    2
                )}$`
            )
        );
        return result2.join('\n');
    }
}