Torever Package Algorithm

const Tour = require('../models/tour.model.js');

exports.searchPackages = async (req, res)=>{
    const searchParams = req.query;

    const kids= searchParams.kids || "2";
    const solo =searchParams.solo || "2";
    let startTime = searchParams.startTime || 0;
    let endTime = searchParams.endTime || 0;
    let day = (endTime - startTime) / (24*3600*1000) - 1; // divide by one day in seconds
    const city = searchParams.city || 'istanbul';
    const country = searchParams.country || 'turkey';
    const packageObjects = [];

    startTime = parseInt(startTime, 10);
    endTime = parseInt(endTime, 10);

    //TODO add first day and last day to tours while creating a package.

    //TODO add free day if tours less than days number.

    const searchQuery = {
        kids:{$in: [kids, "2"]},
        solo:{$in: [solo, "2"]},
        city,
        country,
    };

    if (day < 1) {
        day = 1;
    }

    const editorsChoice = await Tour.find({
        ...searchQuery,
    })
    .sort({editorRate:-1})
    .limit(day);


    packageObjects.push({
        name: 'Editor\'s Choice',
        tours: editorsChoice,
        startTime,
        endTime,
    });

    const relaxingTours = await Tour.find({
        ...searchQuery,
        category: {$all :'Relaxing'}
    }).limit(day);

    if(relaxingTours.length !== 0) {
        packageObjects.push({
            name: 'Relaxing',
            tours: relaxingTours,
            startTime,
            endTime,
        });
    }

    const shopingPackages = await Tour.find({
        ...searchQuery,
        category: {$all :'Shopping'}
    }).limit(day);


    if(shopingPackages.length !== 0) {
        packageObjects.push({
            name: 'Shopping',
            tours: shopingPackages,
            startTime,
            endTime,
        });
    }

    const sightSeeingPackages = await Tour.find({
        ...searchQuery,
        category: {$all :'Sightseeing'}
    }).limit(day);

    if(sightSeeingPackages.length !== 0) {
        packageObjects.push({
            name: 'Sightseeing',
            tours: sightSeeingPackages,
            startTime,
            endTime,
        });
    }

    const activitesPackage = await Tour.find({
        ...searchQuery,
        category: {$all :'Activities'}
    }).limit(day);

    if(activitesPackage.length !== 0) {
        packageObjects.push({
            name: 'Activities',
            tours: activitesPackage,
            startTime,
            endTime,
        });
    }
    res.send(packageObjects);
};