const midtransCore = require('../../../core/midtrans.service');
const paymentLogger = require('../../../helpers/payment_logger.helper');
const db = require('../../../../models/migration');

class BankTransferService {
    async createTransaction(payload, bank) {
        let { order_id, external_id, amount, customer_details } = payload;

        if (!amount) {
            let order = null;
            if (order_id) order = await db.Order.findByPk(order_id);
            if (!order && external_id) order = await db.Order.findOne({ where: { orderID: external_id } });

            if (!order) throw new Error("Amount wajib diisi atau order_id/external_id tidak valid");
            amount = order.total;
            payload.amount = amount;
        }

        const parameter = {
            payment_type: "bank_transfer",
            transaction_details: {
                order_id: external_id,
                gross_amount: amount
            },
            bank_transfer: {
                bank: bank
            },
            customer_details: customer_details,
            custom_expiry: {
                expiry_duration: parseInt(process.env.MIDTRANS_EXPIRY_DURATION || 24),
                unit: process.env.MIDTRANS_EXPIRY_UNIT || 'hour'
            }
        };

        if (bank === 'mandiri') {
            parameter.payment_type = "echannel";
            parameter.echannel = {
                bill_info1: "Payment For:",
                bill_info2: "Invoice " + (external_id || order_id)
            };
            delete parameter.bank_transfer;
        }

        try {
            const response = await midtransCore.getCoreApi().charge(parameter);

            await paymentLogger.log(response, payload);

            return response;
        } catch (error) {
            throw new Error(`Midtrans Error (${bank}): ${error.message}`);
        }
    }
}

module.exports = new BankTransferService();