const express = require('express');
const common = require('../../lib/common');
const { indexOrders } = require('../../lib/indexing');
const router = express.Router();
const axios = require('axios').default;

router.get('/checkout_cancel', (req, res, next) => {
    // return to checkout for adjustment or repayment
    res.redirect('/checkout');
});

router.get('/checkout_return', async (req, res, next) => {
  const db = req.app.db;
  const config = req.app.config;

  const status = req.query.status || -1;
  const address = req.query.addr || 'na';
  const amount = (req.query.value || 0) / 1e8;
  const txid = req.query.txid || 'na';

  if(Number(status) === 2){
    // we are interested only in final confirmations
    const order = await db.orders.findOne({ orderPaymentId: address });
    if(order){
      if(amount >= order.orderExpectedBtc){
        try{
            await db.orders.updateOne({
                _id: order._id },
                { $set: { orderStatus: 'Paid', orderReceivedBtc: amount, orderBlockonomicsTxid: txid }
            }, { multi: false });
            // if approved, send email etc
                    // set payment results for email
            const paymentResults = {
                message: 'Your payment was successfully completed',
                messageType: 'success',
                paymentEmailAddr: order.orderEmail,
                paymentApproved: true,
                paymentDetails: '<p><strong>Order ID: </strong>' + order._id + '</p><p><strong>Transaction ID: </strong>' + order.orderPaymentId + '</p>'
            };

            // send the email with the response
            // TODO: Should fix this to properly handle result
            common.sendEmail(req.session.paymentEmailAddr, 'Your payment with ' + config.cartTitle, common.getEmailTemplate(paymentResults));
            res.status(200).json({ err: '' });
        }catch(ex){
            console.info('Error updating status success blockonomics', ex);
            res.status(200).json({ err: 'Error updating status' });
        }
        return;
      }
      console.info('Amount not sufficient blockonomics', address);
      try{
          await db.orders.updateOne({
              _id: order._id },
              { $set: { orderStatus: 'Declined', orderReceivedBtc: amount }
          }, { multi: false });
      }catch(ex){
          console.info('Error updating status insufficient blockonomics', ex);
      }
      res.status(200).json({ err: 'Amount not sufficient' });
      return;
    }
    res.status(200).json({ err: 'Order not found' });
    console.info('Order not found blockonomics', address);
    return;
  }
  res.status(200).json({ err: 'Payment not final' });
  console.info('Payment not final blockonomics', address);
});

router.post('/checkout_action', (req, res, next) => {
  const blockonomicsConfig = common.getPaymentConfig();
  const config = req.app.config;
  const db = req.app.db;
  const blockonomicsParams = {};
  // get current rate
  axios
  .get(blockonomicsConfig.hostUrl + blockonomicsConfig.priceApi + config.currencyISO)
  .then((response) => {
    blockonomicsParams.expectedBtc = Math.round(req.session.totalCartAmount / response.data.price * Math.pow(10, 8)) / Math.pow(10, 8);
    // get new address
    axios
      .post(blockonomicsConfig.hostUrl + blockonomicsConfig.newAddressApi, {}, { headers: { 'Content-Type': 'application/json', 'User-Agent': 'blockonomics', Accept: 'application/json', Authorization: 'Bearer ' + blockonomicsConfig.apiKey } })
      .then((response) => {
          blockonomicsParams.address = response.data.address;
          blockonomicsParams.timestamp = Math.floor(new Date() / 1000);
          // create order with status Pending and save ref

            const orderDoc = {
                orderPaymentId: blockonomicsParams.address,
                orderPaymentGateway: 'Blockonomics',
                orderExpectedBtc: blockonomicsParams.expectedBtc,
                orderTotal: req.session.totalCartAmount,
                orderShipping: req.session.totalCartShipping,
                orderItemCount: req.session.totalCartItems,
                orderProductCount: req.session.totalCartProducts,
                orderEmail: req.session.customerEmail,
                orderFirstname: req.session.customerFirstname,
                orderLastname: req.session.customerLastname,
                orderAddr1: req.session.customerAddress1,
                orderAddr2: req.session.customerAddress2,
                orderCountry: req.session.customerCountry,
                orderState: req.session.customerState,
                orderPostcode: req.session.customerPostcode,
                orderPhoneNumber: req.session.customerPhone,
                orderComment: req.session.orderComment,
                orderStatus: 'Pending',
                orderDate: new Date(),
                orderProducts: req.session.cart,
                orderType: 'Single'
            };
            db.orders.insertOne(orderDoc, (err, newDoc) => {
                if(err){
                    console.info(err.stack);
                }
                // get the new ID
                const newId = newDoc.insertedId;
                // add to lunr index
                indexOrders(req.app)
                .then(() => {
                    // set the order ID in the session, to link to it from blockonomics payment page
                    blockonomicsParams.pendingOrderId = newId;
                    req.session.blockonomicsParams = blockonomicsParams;
                    res.redirect('/blockonomics_payment');
              });
            });
      });
  });
});

module.exports = router;