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

class SnapService {
    async createTransaction(payload) {
        let { order_id, external_id, amount, customer_details, item_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 projectId = process.env.PROJECT_ID;
        const midtransOrderId = projectId ? `${external_id}-${projectId}` : external_id;

        const parameter = {
            transaction_details: {
                order_id: midtransOrderId,
                gross_amount: amount
            },
            customer_details: customer_details,
            item_details: item_details,
            usage_limit: 1,
            expiry: {
                duration: parseInt(process.env.MIDTRANS_EXPIRY_DURATION || 24),
                unit: process.env.MIDTRANS_EXPIRY_UNIT || 'hour'
            }
        };

        try {
            const response = await midtransCore.getSnap().createTransaction(parameter);

            await paymentLogger.log(response, payload);

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

module.exports = new SnapService();