Aluminum Joinery

function aluminumJoinery(input) {
    let volume = Number(input[0]);
    let size = input[1];
    let delivery = input[2];
    let sum = 0;

    if (volume <= 10) {
        console.log('Invalid order');
    } else {
        switch (size) {
            case '90X130':
                sum = 110;
                if (volume > 30 && volume <= 60) {
                    sum *= 0.95;
                } else if (volume > 60) {
                    sum *= 0.92;
                }
                break;

            case '100X150':
                sum = 140;
                if (volume > 40 && volume <= 80) {
                    sum *= 0.94;
                } else if (volume > 80) {
                    sum *= 0.9;
                }
                break;

            case '130X180':
                sum = 190;
                if (volume > 20 && volume <= 50) {
                    sum *= 0.93;
                } else if (volume > 50) {
                    sum *= 0.88;
                }
                break;

            case '200X300':
                sum = 250;
                if (volume > 25 && volume <= 50) {
                    sum *= 0.91;
                } else if (volume > 50) {
                    sum *= 0.86;
                }
                break;
        }

        let total = sum * volume;

        if (delivery === 'With delivery') {
            total += 60;
        }
        if (volume > 99) {
            total *= 0.96;
        }

        console.log(`${total.toFixed(2)} BGN`);
    }
}