'use strict';
const util = require('util');
var mysql = require('mysql');
var fs = require('fs');
const config = {
    host: "localhost",
    user: "root",
    password: "",
    database: "intops"
};

function makeDb(config) {
    const connection = mysql.createConnection(config);
    return {
        query(sql, args) {
            return util.promisify(connection.query)
                    .call(connection, sql, args);
        },
        close() {
            return util.promisify(connection.end).call(connection);
        }
    };
}

exports.SaveLogs = async function (req, res) {
    console.log("req: ", req.body.plate);

    var today = new Date();
    var currentDate = today.getDate();
    var currentMonth = today.getMonth() + 1;
    var currentYear = today.getFullYear();
    var rootDir = "/mnt/c/xampp/htdocs/AIParking_Intops_Server/web/data/uploads/";

    if (!fs.existsSync(rootDir + currentYear))
        fs.mkdirSync(rootDir + currentYear);
    if (!fs.existsSync(rootDir + currentYear + "/" + currentMonth))
        fs.mkdirSync(rootDir + currentYear + "/" + currentMonth);
    if (!fs.existsSync(rootDir + currentYear + "/" + currentMonth + "/" + currentDate))
        fs.mkdirSync(rootDir + currentYear + "/" + currentMonth + "/" + currentDate);
    if (!fs.existsSync(rootDir + currentYear + "/" + currentMonth + "/" + currentDate + "/" + req.body.type))
        fs.mkdirSync(rootDir + currentYear + "/" + currentMonth + "/" + currentDate + "/" + req.body.type);
    if (!fs.existsSync(rootDir + currentYear + "/" + currentMonth + "/" + currentDate + "/" + req.body.type + "/plate"))
        fs.mkdirSync(rootDir + currentYear + "/" + currentMonth + "/" + currentDate + "/" + req.body.type + "/plate");
    if (!fs.existsSync(rootDir + currentYear + "/" + currentMonth + "/" + currentDate + "/" + req.body.type + "/frame"))
        fs.mkdirSync(rootDir + currentYear + "/" + currentMonth + "/" + currentDate + "/" + req.body.type + "/frame");
    var currentTimestamp = Math.round(today.getTime() / 1000);
    var fileName = req.body.plate + "_" + currentTimestamp + ".png";
    var plateSaved = currentYear + "/" + currentMonth + "/" + currentDate + "/" + req.body.type + "/plate/" + fileName;
    var frameSaved = currentYear + "/" + currentMonth + "/" + currentDate + "/" + req.body.type + "/frame/" + fileName;

    await fs.writeFileSync(rootDir + plateSaved, req.body.plate_image, 'base64');
    await fs.writeFileSync(rootDir + frameSaved, req.body.frame_image, 'base64');

    const db = makeDb(config);
    var vehicleInfo = {"status": false};
    var query_plate_raw = await db.query("SELECT * FROM vehicle WHERE plate='" + req.body.plate + "'");
    if (query_plate_raw.length > 0) {
        vehicleInfo = {"status": true, "data": query_plate_raw[0]};
        if (req.body.type == "in") {
            await db.query("INSERT INTO logs(`vehicle_id`,`plate_image_in`,`frame_image_in`,`time_in`) VALUES ('" + query_plate_raw[0].id + "','" + plateSaved + "','" + frameSaved + "'," + currentTimestamp + ")");
        }
        if (req.body.type == "out") {
            var checkIn = await db.query("SELECT * FROM logs WHERE vehicle_id=" + query_plate_raw[0].id + " AND time_out=0 ORDER BY time_in DESC LIMIT 0,1");
            if (checkIn.length > 0) {
                await db.query("UPDATE logs SET `plate_image_out`='" + plateSaved + "',`frame_image_out`='" + frameSaved + "',`time_out`=" + currentTimestamp + " WHERE id=" + checkIn[0].id);
            } else {
                await db.query("INSERT INTO logs(`vehicle_id`,`plate_image_out`,`frame_image_out`,`time_out`) VALUES ('" + query_plate_raw[0].id + "','" + plateSaved + "','" + frameSaved + "'," + currentTimestamp + ")");
            }
        }
    } else {
        var query_plate_levenshtein = await db.query("SELECT * FROM `vehicle` WHERE levenshtein('" + req.body.plate + "', `plate`) BETWEEN 0 AND 2 LIMIT 0,1");
        if (query_plate_levenshtein.length > 0) {
            vehicleInfo = {"status": true, "data": query_plate_levenshtein[0]};
            if (req.body.type == "in") {
                await db.query("INSERT INTO logs(`vehicle_id`,`plate_image_in`,`frame_image_in`,`time_in`) VALUES ('" + query_plate_levenshtein[0].id + "','" + plateSaved + "','" + frameSaved + "'," + currentTimestamp + ")");
            }
            if (req.body.type == "out") {
                var checkIn = await db.query("SELECT * FROM logs WHERE vehicle_id=" + query_plate_levenshtein[0].id + " AND time_out=0 ORDER BY time_in DESC LIMIT 0,1");
                if (checkIn.length > 0) {
                    await db.query("UPDATE logs SET `plate_image_out`='" + plateSaved + "',`frame_image_out`='" + frameSaved + "',`time_out`=" + currentTimestamp + " WHERE id=" + checkIn[0].id);
                } else {
                    await db.query("INSERT INTO logs(`vehicle_id`,`plate_image_out`,`frame_image_out`,`time_out`) VALUES ('" + query_plate_levenshtein[0].id + "','" + plateSaved + "','" + frameSaved + "'," + currentTimestamp + ")");
                }
            }
        } else {
            if (req.body.type == "in") {
                await db.query("INSERT INTO logs_unknow(`plate`,`plate_image_in`,`frame_image_in`,`time_in`) VALUES ('" + req.body.plate + "','" + plateSaved + "','" + frameSaved + "'," + currentTimestamp + ")");
            }
            if (req.body.type == "out") {
                var checkIn_raw = await db.query("SELECT * FROM logs_unknow WHERE plate=" + req.body.plate + " AND time_out=0 ORDER BY time_in DESC LIMIT 0,1");
                if (checkIn_raw.length > 0) {
                    await db.query("UPDATE logs_unknow SET `plate_image_out`='" + plateSaved + "',`frame_image_out`='" + frameSaved + "',`time_out`=" + currentTimestamp + " WHERE id=" + checkIn_raw[0].id);
                } else {
                    var checkIn_levenshtein = await db.query("SELECT * FROM `logs_unknow` WHERE levenshtein('" + req.body.plate + "', `plate`) BETWEEN 0 AND 2 AND time_out=0 ORDER BY time_in DESC LIMIT 0,1");
                    if (checkIn_levenshtein.length > 0) {
                        await db.query("UPDATE logs_unknow SET `plate_image_out`='" + plateSaved + "',`frame_image_out`='" + frameSaved + "',`time_out`=" + currentTimestamp + " WHERE id=" + checkIn_levenshtein[0].id);
                    } else {
                        await db.query("INSERT INTO logs_unknow(`plate`,`plate_image_out`,`frame_image_out`,`time_out`) VALUES ('" + req.body.plate + "','" + plateSaved + "','" + frameSaved + "'," + currentTimestamp + ")");
                    }
                }
            }
        }
    }
    res.send(vehicleInfo);
};