BackpackDecalSpotter/script.js

var checkable_accounts = { '76561198311319887': 'Weapon Crusher' };
decaled_objects = { 'Conscientious Objector': '3.66', 'Clan Pride': '2.11', 'Flair!': '4.22', 'Photo Badge': '2.44' }
backpack_page_limit = 3;

function fetchAccounts() {
    var deferred = new $.Deferred();
    for (const [item, price] of Object.entries(decaled_objects)) {
        handleItem(item, price);
    }
    deferred.resolve(checkable_accounts);
    return deferred.promise()
}

function handleItem(item, price) {
    for (let i = 1; i <= backpack_page_limit; i++) {
        $.ajax({
            dataType: 'html',
            url: 'https://backpack.tf/classifieds',
            data: 'page=' + i + '&item=' + encodeURIComponent(item) + '&quality=6&tradable=1&craftable=1&australium=-1&killstreak_tier=0&numeric=price&comparison=lt&value=' + price + '&low=' + price,
            async: false,
            tryCount: 0,
            retryLimit: 3,
            success: function (msg) {
                if ($('.col-md-6:first .alert', msg).length > 0) {
                    return false;
                }
                $('.col-md-6:first .user-link', msg).each(function () {
                    checkable_accounts[$(this).attr('data-id')] = $(this).attr('data-name');
                });
            },
            error: function (response, status, error) {
                if (response.status == 429) {
                    this.tryCount++;
                    if (this.tryCount <= this.retryLimit) {
                        setTimeout(() => {
                            $.ajax(this);
                        }, 3000);
                        return;
                    }
                }
            }
        });
    }
}

function handleAccounts() {
    for (const [steamid64, name] of Object.entries(checkable_accounts)) {
        handleAccount(steamid64, name);
    }
}

function handleAccount(steamid64, name) {
    var url = "https://backpack.tf/_inventory/" + steamid64;
    $.ajax({
        dataType: 'json',
        url: url,
        async: false,
        tryCount: 0,
        retryLimit: 3,
        success: function (msg) { handleHTML(steamid64, name, msg['html']); },
        error: function (response, status, error) {
            if (response.status == 429) {
                this.tryCount++;
                if (this.tryCount <= this.retryLimit) {
                    setTimeout(() => {
                        $.ajax(this);
                    }, 3000);
                    return;
                }
            }
        }
    });
}

function handleHTML(steamid64, name, html_string) {
    html = $.parseHTML(html_string);
    var decaled_items = $('div.decal', html);
    if (decaled_items.length == 0) {
        var empty_accounts = $('#empty-accounts');
        empty_accounts.append('<a href="https://next.backpack.tf/profiles/' + steamid64 + '">' + name + '</a>; ');
        empty_accounts.fadeIn();
        return false;
    }
    var inventory = $('<div class="inventory"></div>');
    inventory.append('<a href="https://next.backpack.tf/profiles/' + steamid64 + '"><h3>' + name + '</h3></a>');
    decaled_items.each(function () {
        var url = "https://next.backpack.tf/item/" + $(this).parent().attr('data-id');
        var a = $('<a href="' + url + '"></a>');
        a.append($(this).parent());
        inventory.append(a);
    });
    var inventories = $('.inventory');
    if (inventories.length > 0) {
        var child_count = inventory.children().length;
        inventory.attr('data-items', child_count);
        var last_div = null;
        inventories.each(function () {
            if (child_count > $(this).children().length) {
                return false;
            }
            last_div = $(this);
        });
        if (last_div) {
            last_div.after(inventory);
        } else {
            $('body').prepend(inventory);
        }
    } else {
        $('#empty-accounts').before(inventory);
    }
}

$(document).ready(function () {
    $.when(fetchAccounts()).done(function () {
        handleAccounts();
    });
});