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FAB Free Asset Getter

A script to get all free assets from the FAB marketplace

目前為 2024-11-24 提交的版本，檢視 最新版本。

// ==UserScript==
// @name        FAB Free Asset Getter
// @namespace   Violentmonkey Scripts
// @match       https://www.fab.com/channels/*
// @grant       none
// @license     AGPL
// @version     1.0
// @author      Dominic Hock <[email protected]>
// @description A script to get all free assets from the FAB marketplace
// ==/UserScript==

(function () {
    `use strict`;

    function getCSRFToken() {
        // Get from fab_csrftoken cookie
        let cookies = document.cookie.split(";");
        for (let i = 0; i < cookies.length; i++) {
            let cookie = cookies[i].trim();
            if (cookie.startsWith("fab_csrftoken=")) {
                return cookie.split("=")[1];
            }
        }
        return "";
    }

    async function getAcquiredIds(listings) {
        console.log("Getting acquired ids");
        // max listings is 24 so just cut
        if (listings.length > 24) {
            console.error("Too many listings");
            return [];
        }
        // Convert uid array to listing_ids=X&listing_ids=Y&listing_ids=Z
        let ids = listings
            .filter(listing => !listing.isOwned)
            .map(listing => listing.id)
            .join("&listing_ids=");
        //[{"uid":"5059af80-527f-4dda-8e75-7dde4dfcdf81","acquired":true,"rating":null}]
        let result = await fetch("https://www.fab.com/i/users/me/acquired-content?listing_ids=" + ids, {
            "credentials": "include",
            "headers": {
                "User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:131.0) Gecko/20100101 Firefox/131.0",
                "Accept": "application/json, text/plain, */*",
                "Accept-Language": "en",
                "X-Requested-With": "XMLHttpRequest",
                "X-CsrfToken": getCSRFToken(),
                "Sec-GPC": "1",
                "Sec-Fetch-Dest": "empty",
                "Sec-Fetch-Mode": "cors",
                "Sec-Fetch-Site": "same-origin"
            },
            "referrer": "https://www.fab.com/channels/unreal-engine?is_free=1&sort_by=-createdAt&is_ai_generated=0",
            "method": "GET",
            "mode": "cors"
        });

        let json = await result.json();
        let acquired = [];
        for (let i = 0; i < json.length; i++) {
            if (json[i].acquired) {
                acquired.push(json[i].uid);
            }
        }

        let alreadyAcquired =listings .filter(listing => listing.isOwned).length;

        console.log("Acquired " + acquired.length + " of " + listings.length + " listings (" + alreadyAcquired + " already acquired were skipped)");
        return acquired;
    }

    async function getIds() {
        let results = document.getElementsByClassName("fabkit-ResultGrid-root")[0];
        let foundItems = results.childNodes;

        let currentListings = [];
        for (let i = 0; i < foundItems.length; i++) {
            let element = foundItems[i];
            // Check if we have a listing
            if (foundItems[i].getElementsByClassName("fabkit-Stack-root").length <= 0) {
                console.error("No listing found?? " + element);
                continue;
            }
            let root = foundItems[i].getElementsByClassName("fabkit-Stack-root")[0];
            if (root.getElementsByClassName("fabkit-Stack-root").length <= 0) {
                console.error("No listing found?? " + element);
                continue;
            }
            let root2 = root.getElementsByClassName("fabkit-Stack-root")[1];
            let thumbOverlay = root.getElementsByClassName("fabkit-Thumbnail-overlay")[0];
            let name = root2.getElementsByClassName("fabkit-Typography-root")[0].innerText;
            let url = thumbOverlay.href;
            let isOwned = root2.getElementsByClassName("fabkit-Typography-root")[2].innerText === "Owned";
            console.debug(name + " - " + url + ": " + isOwned);

            if (url === undefined) {
                console.log("Not loaded???? ", url, element)
                return;
            }
            // Extract id
            let id = url.split("/").pop();

            currentListings.push({
                isOwned: isOwned,
                name: name,
                id: id
            });
        }

        let acquired = [];
        console.log("Need to check " + currentListings.length + " listings");
        if (currentListings.length > 24) {
            console.log("Too many listings, splitting into 24 chunks");
            // Slice, request, join, until we are finished
            for (let i = 0; i < currentListings.length; i += 24) {
                let partial = await getAcquiredIds(currentListings.slice(i, i + 24));
                acquired = acquired.concat(partial);
                await new Promise(resolve => setTimeout(resolve, 1000));
            }
        } else {
            acquired = await getAcquiredIds(currentListings);
        }
        await new Promise(resolve => setTimeout(resolve, 1000));
        // [{id:"",offerId:""}]
        let offers = [];
        for (let i = 0; i < currentListings.length; i++) {
            console.log("Checking " + currentListings[i].name + " (" + currentListings[i].id + ")");
            let currentListing = currentListings[i];
            if (acquired.includes(currentListing.id)) {
                console.log(currentListing.name + " (" + currentListing.id + ") already acquired");
                continue;
            }

            let result = await fetch("https://www.fab.com/i/listings/" + currentListing.id, {
                "credentials": "include",
                "headers": {
                    "User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:131.0) Gecko/20100101 Firefox/131.0",
                    "Accept": "application/json, text/plain, */*",
                    "Accept-Language": "en",
                    "X-Requested-With": "XMLHttpRequest",
                    "X-CsrfToken": getCSRFToken(),
                    "Sec-GPC": "1",
                    "Sec-Fetch-Dest": "empty",
                    "Sec-Fetch-Mode": "cors",
                    "Sec-Fetch-Site": "same-origin",
                    "Priority": "u=0"
                },
                "referrer": "https://www.fab.com/listings/" + currentListing.id,
                "method": "GET",
                "mode": "cors"
            });

            // licenses -> foreach -> get where price 0 -> buy
            let json = await result.json();
            let listingOffers = [];
            for (let j = 0; j < json.licenses.length; j++) {
                let license = json.licenses[j];
                if (license.priceTier.price != 0) {
                    continue;
                }

                offers.push({
                    name: currentListing.name,
                    id: currentListing.id,
                    offerId: license.offerId
                });
                listingOffers.push(license.offerId);
                console.log("Found free offer for " + currentListing.name + " (" + currentListing.id + ")");
            }
            if (listingOffers.length == 0) {
                console.log("No free offers found for " + currentListing.name + " (" + currentListing.id + ")");
            }
            await new Promise(resolve => setTimeout(resolve, 500));
        }

        for (let i = 0; i < offers.length; i++) {
            console.log("Trying to add " + offers[i].name + " (" + offers[i].id + ")");
            let result = await fetch("https://www.fab.com/i/listings/" + offers[i].id + "/add-to-library", {
                "credentials": "include",
                "headers": {
                    "User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:131.0) Gecko/20100101 Firefox/131.0",
                    "Accept": "application/json, text/plain, */*",
                    "Accept-Language": "en",
                    "X-Requested-With": "XMLHttpRequest",
                    "X-CsrfToken": getCSRFToken(),
                    "Content-Type": "multipart/form-data; boundary=---------------------------4056384097365570293376228769",
                    "Sec-GPC": "1",
                    "Sec-Fetch-Dest": "empty",
                    "Sec-Fetch-Mode": "cors",
                    "Sec-Fetch-Site": "same-origin",
                    "Priority": "u=0"
                },
                "referrer": "https://www.fab.com/listings/" + offers[i].id,
                "body": "-----------------------------4056384097365570293376228769\r\nContent-Disposition: form-data; name=\"offer_id\"\r\n\r\n" + offers[i].offerId + "\r\n-----------------------------4056384097365570293376228769\r\n-----------------------------4056384097365570293376228769--\r\n",
                "method": "POST",
                "mode": "cors"
            });
            // check for 200
            if (result.status == 200 || result.status == 201 || result.status == 202 || result.status == 204) {
                console.log("Added " + offers[i].name + " (" + offers[i].id + ")");
            } else {
                console.log("Failed to add " + offers[i].name + " (" + offers[i].id + ")");
            }
            console.log("Progress: " + (i + 1) + "/" + offers.length + " (" + ((i + 1) / offers.length * 100).toFixed(2) + "%)");
            await new Promise(resolve => setTimeout(resolve, 500));
        }

        return foundItems[foundItems.length - 1];
    }

    async function getAll() {
        let last;
        last = await getIds();

        for (let i = 0; i < 64; i++) {
            // Scroll to last item and wait for 5 seconds
            last.scrollIntoView();

            console.log("Scrolling...");
            await new Promise(resolve => setTimeout(resolve, 5000));
            console.log("Refreshing...");
            last = await getIds();
            console.log("Done");
        }
    }


    function doControlsExist() {
        var sortContainer = getSortContainer();
        return sortContainer.querySelector(`.tmnky-custom-controld`);
    }

    function getSortContainer() {
        return document.getElementsByClassName(`fabkit-Surface-root`)[0].childNodes[0];
    }

    function addControls() {
        var hideOwnedCheckbox = createCheckbox(`Get Free Assets`);

        var sortContainer = getSortContainer();
        var onSaleCheckbox = sortContainer.querySelector(`:nth-child(4)`)

        if (onSaleCheckbox && onSaleCheckbox.parentElement === sortContainer) {
            sortContainer.insertBefore(hideOwnedCheckbox, onSaleCheckbox);
        }
    }

    function createCheckbox(text) {
        var checkboxAccordionHeaderContainer = document.createElement(`h2`);
        checkboxAccordionHeaderContainer.className = `fabkit-Accordion-headerContainer tmnky-custom-controld`;

        var checkboxAccordionHeader = document.createElement(`label`);
        checkboxAccordionHeader.className = `fabkit-Accordion-header`;
        var textElement = document.createTextNode(text);
        checkboxAccordionHeader.appendChild(textElement);
        checkboxAccordionHeaderContainer.appendChild(checkboxAccordionHeader);

        var checkboxAccordionHeaderRight = document.createElement(`div`);
        checkboxAccordionHeaderRight.className = `fabkit-Accordion-headerRight`;
        checkboxAccordionHeader.appendChild(checkboxAccordionHeaderRight);

        var checkboxElement = document.createElement(`button`);
        checkboxElement.addEventListener(`click`, function () {
            getAll();
        });
        checkboxElement.innerText = "Get";
        checkboxAccordionHeaderRight.appendChild(checkboxElement);

        return checkboxAccordionHeaderContainer;
    }

    function onBodyChange(mut) {

        if (!doControlsExist()) {
            addControls();
        }
    }

    var mo = new MutationObserver(onBodyChange);
    mo.observe(document.body, { childList: true, subtree: true });
})();

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