const config = require('../config');
const express = require('express');
const router = express.Router(); // eslint-disable-line
const got = require('got');
const con = require('../db/connect');

// Obtenemos los parametros
router.get('/:truckFk', async(req, res) => {
    const ip = config.ip;
    const truckFk = req.params.truckFk;
    let bufferTime = [];
    let bufferEpcHex = [];
    let interval;
    let jsonMessage;

    console.log('--START BACKEND--');

    const stream = await got.stream(`http://${ip}/api/v1/data/stream`);
    stream
        .on('data', value => {
        // value = '{"timestamp":"2022-07-27T11:57:39.226680176Z","tagInventoryEvent":{"epc":"qrsAAAAAAAAFdgQg","epcHex":"AABB00000000000005760420","pc":"MAA=","antennaPort":4,"antennaName":"4","peakRssiCdbm":-7600,"lastSeenTime":"2022-07-27T11:57:39.041444Z","phaseAngle":46.05}}'
            let buffer = value.toString();
            buffer = buffer.split('\n');
            for (let result of buffer) {
                if (result && /{.*:{.*:.*}}/.test(result)) {
                    const jsonResult = JSON.parse(result);
                    let epcHex = jsonResult?.tagInventoryEvent?.epcHex;

                    if (!epcHex) return;
                    if (epcHex.search('AABB') == -1) return;

                    // console.log(epcHex)
                    epcHex = epcHex.replace('AABB', '');
                    const existEpcHex = element => element == epcHex;
                    const bufferIndex = bufferEpcHex.findIndex(existEpcHex);

                    if (bufferIndex >= 0)
                        return bufferTime[bufferIndex].count = bufferTime[bufferIndex].count + 1;

                    const newObject = {
                        code: epcHex,
                        created: jsonResult.timestamp,
                        peakRssi: jsonResult.tagInventoryEvent.peakRssiCdbm,
                        count: 1
                    };
                    bufferEpcHex.push(epcHex);
                    bufferTime.push(newObject);
                    if (interval) {
                        clearInterval(interval);
                        interval = null;
                    }
                    interval = setInterval(insertDB, 5000, truckFk);
                }
            }
        })
        .on('close', () => {
            console.log('CLOSE_STREAM');
        });

    async function insertDB(truckFk) {
        clearInterval(interval);
        stream.destroy();

        interval = null;
        console.log('--INSERT IN DB--');
        console.log(bufferEpcHex, bufferTime, truckFk);

        const rfids = [];
        let response;
        for (let code of bufferEpcHex) {
            while (code.substring(0, 1) == 0)
                code = code.substring(1);

            rfids.push(code);
        }

        console.log('rfids', rfids.join(','));
        if (rfids.length)
            [response] = await con.query(`CALL vn.palletBuilding(?,?);`, [rfids.join(','), truckFk]);

        console.log(response);
        console.log(response[0]);
        console.log(response[0][0]);
        console.log(response[0][0]?.palletFk);
        bufferTime = [];
        bufferEpcHex = [];
        const pallet = response[0][0]?.palletFk;
        if (pallet) {
            const print = await con.query(`CALL vn.expeditionPallet_printLabel(?);`, [pallet]);
            console.log('print', print);
            jsonMessage = {pallet: pallet, print: print};
            stream.destroy();
            return res.json(jsonMessage);
        }
        return res.json({error: 'ERROR_CREATING_PALLET'});
    }
});

module.exports = router;