class PaymentProcessor {
    constructor(options) {
        this.options = options;
        this.payments = [];
    }

    get options() {
        return this._options;
    }

    set options(options) {
        if (options === undefined) {
            options = {};
        }

        if (this.options === undefined) {
            this._options = {};
        }

        this.setOptions(options);
    }

    registerPayment(id, name, type, value) {
        if (id === '' || name === '' || !Number(value) || !this.options['types'].includes(type)) {
            throw new Error('Invalid payment!');
        }

        if (this.payments.some(x => x.id === id)) {
            throw new Error('Payment exists!');
        }

        let payment = {id, name, type, value};
        this.payments.push(payment);
    }

    deletePayment(id) {
        if (this.payments.every(x => x.id !== id)) {
            throw new Error('Payment does not exist!');
        }

        this.payments = this.payments.filter(x => x.id !== id);
    }

    get(id) {
        if (this.payments.every(x => x.id !== id)) {
            throw new Error('Payment does not exist!');
        }

        let payment =  this.payments.filter(x => x.id === id)[0];
        let result = `Details about payment ID: ${payment.id}\n`;
        result += `- Name: ${payment.name}\n`;
        result += `- Type: ${payment.type}\n`;
        result += `- Value: ${payment.value.toFixed(this.options['precision'])}`;

        return result;
    }

    setOptions(options) {
        if (options['types'] === undefined && options['precision'] === undefined) {
            this._options['types'] = ['service', 'product', 'other'];
            this._options['precision'] = 2;
        } else if (options['types'] === undefined && options['precision'] !== undefined) {
            this._options['types'] = ['service', 'product', 'other'];
            this._options['precision'] = options['precision'];
        } else if (options['types'] !== undefined && options['precision'] === undefined) {
            this._options['types'] = options['types'];
            this._options['precision'] = 2;
        } else {
            this._options['types'] = options['types'];
            this._options['precision'] = options['precision'];
        }
    }

    toString() {
        let result = 'Summary:\n';
        result += `- Payments: ${this.payments.length}\n`;
        let balance = 0;

        for (let payment of this.payments) {
            balance += payment.value;
        }

        result += `- Balance: ${balance.toFixed(this.options['precision'])}`;

        return result;
    }
}