simple array sorting, filtering, searching

array-sort-search-filter.js

console.log(data)
var filterBy
// filtering
switch (body.orderBy.toLowerCase()) {
    case 'name':
        filterBy = 'first_name'
        break;
    case 'age':
        filterBy = 'age'
        break;
    case 'jobs':
        filterBy = 'jobs'
        break;
    case 'location':
        filterBy = 'location'
        break;
    case 'email':
        filterBy = 'email'
        break;
    case 'registered':
        filterBy = 'created_at'
        break;
    default:
        break;
}
// ordering
if (body.order === 'asc') {
    data.Items = data.Items.sort(function(a, b) {
        var x = a[filterBy];
        var y = b[filterBy];
        return ((x < y) ? -1 : ((x > y) ? 1 : 0));
    });
    console.log('data after sort: ', data)
}
else if (body.order === 'desc') {
    data.Items = data.Items.sort(function(a, b) {
        var x = b[filterBy];
        var y = a[filterBy];
        return ((x < y) ? -1 : ((x > y) ? 1 : 0));
    });
    console.log('data after sort: ', data)
}
// searching
if (body.search) {
    const SEARCHABLE_KEYS = ['location', 'first_name', 'last_name', 'email']
    let searchFor = body.search.toLowerCase()
    console.log('searching for: ', searchFor)
    let foundItems = []
    for (var i = 0; i < data.Items.length; i++) {
        for (var key in data.Items[i]) {
            // if the key is searchable AND the item is found AND the user is not in foundItems
            if ((SEARCHABLE_KEYS.indexOf(key.toLowerCase()) >= 0) &&
                (String(data.Items[i][key]).toLowerCase().includes(searchFor)) &&
                (!foundItems.includes(data.Items[i]))) {
                console.log('adding: ', data.Items[i])
                foundItems.push(data.Items[i])
            }
        }
    }
    data.Items = foundItems
}
let totalItemsReturned = data.Items.length
// pagination
if ((body.page || body.page === 0) && body.count) {
    let { page, count } = body
    let paginatedData = data.Items.slice(count * page, (count * page) + count)
    console.log('returning users: ', paginatedData)
    response.body = JSON.stringify({ users: paginatedData, totalCount: totalItemsReturned })
    context.done(null, response);
}
else {
    // no pagination
    console.log('returning users: ', data.Items)
    response.body = JSON.stringify({ users: data.Items, totalCount: totalItemsReturned })
    context.done(null, response);
}