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/* eslint-disable max-len */
/* eslint-disable no-await-in-loop */
require('dotenv').config();
const amqp = require('amqplib/callback_api');
const oms = require('./oms');
const utility = require('./utility');
const { AMQP_HOST } = process.env;
const { AMQP_QUEUE } = process.env;
const { AMQP_DELAY } = process.env;
function rabbitMQ() {
amqp.connect(AMQP_HOST, (error0, connection) => {
if (error0) {
throw error0;
}
connection.createChannel((error1, channel) => {
if (error1) {
throw error1;
}
const ch = channel;
// consume one message at a time
ch.prefetch(1);
ch.assertExchange('order_error_exchange', 'fanout', { durable: false });
ch.assertExchange('order_intermediate_exchange', 'fanout', { durable: false });
ch.assertExchange('order_final_delayed_exchange', 'fanout', { durable: false });
// setup intermediate queue which will never be listened.
// all messages are TTLed so when they are 'dead', they come to another exchange
const ecommerceQueue = AMQP_QUEUE;
ch.assertQueue(ecommerceQueue, {
deadLetterExchange: 'order_final_delayed_exchange',
messageTtl: parseInt(AMQP_DELAY, 10), // Time To Live (TLL) in temporary queue
}, (err, q) => {
ch.bindQueue(q.queue, 'order_intermediate_exchange', '');
});
const queueError = 'PMS.queueError';
ch.assertQueue(queueError, {}, (err, q) => {
ch.bindQueue(q.queue, 'order_error_exchange', '');
});
ch.assertQueue('PMS.queueOrder', {
deadLetterExchange: 'order_error_exchange',
}, (err, q) => {
ch.bindQueue(q.queue, 'order_final_delayed_exchange', '');
console.log(`[AMQP] Waiting for messages in queue '${q.queue}'`);
ch.consume(q.queue, async (msg) => {
console.log('[AMQP] Received %s', msg.content.toString());
const message = JSON.parse(msg.content.toString());
const data = JSON.parse(message.message);
if (data.action === utility.ACTION_MASSIVE_EMAIL) {
if (data.activity && !data.activity[utility.ACTIVITY_SELLER_EMAIL]) {
throw new Error('The MASSIVE_EMAIL action does not have an activity');
}
console.log('SEND MAIL TO ALL SELLERS');
const success = await oms.sendRecapEmail(data.orderList.split(utility.ORDER_LIST_SEPARATOR), data.indaco.instance_id, data.order.store.storeview_code);
if (success) {
console.log('[AMQP] Seller email Checked and acked');
// send acknowledgment and remove message from the queue
channel.ack(msg);
console.log('[AMQP] Seller email success');
} else {
channel.nack(msg, false, false);
console.log(`[AMQP] Error sending email for orders ${data.orderList}`);
}
return;
}
const omsorders = await oms.fetchOrderRest(data.order.increment_id, data.indaco.instance_id, data.order.store.storeview_code)
.catch((error) => {
// send message to error queue
channel.nack(msg, false, false);
throw Error(error);
});
for (let i = 0; i < omsorders.length; i++) {
// checking a single order
console.log('[AMQP] Checking order');
await oms.checkOrder(omsorders[i], data.indaco.instance_id, data.order.store.storeview_code, data.action, data.activity)
.then((check) => {
if (check.success) {
console.log('[AMQP] Checked and acked');
// send acknowledgment and remove message from the queue
channel.ack(msg);
console.log(`[AMQP] Order ${check.order.name} check success`);
}
})
.catch((error) => {
// send message to error queue
channel.nack(msg, false, false);
console.log(`[AMQP] Error checking order ${omsorders[i].name}: ${error}`);
});
}
}, {
// manual acknowledgment mode
noAck: false,
});
});
});
});
}
module.exports = {
rabbitMQ,
};