itemDB Fetch Lib

Fetches something from itemDB, handling authentication issues arising from the March 2026 API update.
لا ينبغي أن لا يتم تثبيت هذا السكريت مباشرة. هو مكتبة لسكبتات لتشمل مع التوجيه الفوقية // @require https://update.greasyfork.org/scripts/567036/1759045/itemDB%20Fetch%20Lib.js
Ask a question, post a review, or report the script.
Wrap lines
/*
•:•.•:•.•:•:•:•:•:•:•:••:•.•:•.•:•:•:•:•:•:•:•:•.•:•.•:•:•:•:•:•:•:••:•.•:•.•:•.•:•:•:•:•:•:•:•:•.•:•:•.•:•.••:•.•:•.••:
........................................................................................................................
☆ ⠂⠄⠄⠂⠁⠁⠂⠄⠄⠂✦ ⠂⠄⠄⠂⠁⠁⠂⠄⠄⠂☆ ⠂⠄⠄⠂⠁⠁⠂⠄⠄⠂✦ ⠂⠄⠄⠂⠁⠁⠂⠄⠂⠄⠄⠂☆ ⠂⠄⠄⠂⠁⠁⠂⠄⠄⠂✦ ⠂⠄⠄⠂⠁⠁⠂⠄⠂⠄⠄⠂☆ ⠂⠄⠄⠂⠁⠁⠂⠄⠄⠂✦
    This is not a script and does nothing on its own. It was created to be @required by userscripts.
    This allows an userscript to send a query to itemDB, showing an error message if the user is unauthenticated.
    To use it, asynchronously call the function fetchItemDb(url, scriptName), using the URL you would use for a fetch
    (example: https://itemdb.com.br/api/v1/items/negg) as url, and your script's name for UI purposes in case
    authorization fails.

    Version: 1.0.0

    ✦ ⌇ saahphire
☆ ⠂⠄⠄⠂⠁⠁⠂⠄⠄⠂✦ ⠂⠄⠄⠂⠁⠁⠂⠄⠄⠂☆ ⠂⠄⠄⠂⠁⠁⠂⠄⠄⠂✦ ⠂⠄⠄⠂⠁⠁⠂⠄⠂⠄⠄⠂☆ ⠂⠄⠄⠂⠁⠁⠂⠄⠄⠂✦ ⠂⠄⠄⠂⠁⠁⠂⠄⠂⠄⠄⠂☆ ⠂⠄⠄⠂⠁⠁⠂⠄⠄⠂✦
........................................................................................................................
•:•.•:•.•:•:•:•:•:•:•:••:•.•:•.•:•:•:•:•:•:•:•:•.•:•.•:•:•:•:•:•:•:••:•.•:•.•:•.•:•:•:•:•:•:•:•:•.•:•:•.•:•.••:•.•:•.••:
*/

let hasCreatedItemDBUnauthorizedDialog = false;

const createItemDBUnauthorizedDialog = () => {
    const dialog = document.createElement('dialog');
    document.body.appendChild(dialog);
    dialog.classList.add('itemDB-rejection-modal');
    return dialog;
}

const createItemDBUnauthorizedDialogText = (scriptName) => {
    const p = document.createElement('p');
    p.textContent = `Your itemDB authorization has expired! You need to visit it every 24 hours (logged-in) or 14 days (logged in) so the script ${scriptName} can work.`;
    return p;
}

const createItemDBUnauthorizedButton = (text, callback) => {
    const button = document.createElement('button');
    button.role = 'button';
    button.textContent = text;
    button.addEventListener('click', callback);
    return button;
}

const fillItemDBUnauthorizedDialog = (scriptName, dialog) => {
    dialog.appendChild(createItemDBUnauthorizedDialogText(scriptName));
    dialog.appendChild(createItemDBUnauthorizedButton('✖️ Close', () => {
        dialog.close();
    }));
    dialog.appendChild(createItemDBUnauthorizedButton('🔗 Go to itemDB', () => {
        dialog.close();
        window.open('https://itemdb.com.br', '_blank').focus();
    }));
}

const onUnauthorized = (scriptName, channel) => {
    if(!hasCreatedItemDBUnauthorizedDialog) {
        hasCreatedItemDBUnauthorizedDialog = true;
        document.head.insertAdjacentHTML('beforeend', itemDBCSS);
        const dialog = createItemDBUnauthorizedDialog();
        fillItemDBUnauthorizedDialog(scriptName, dialog, channel);
        document.body.appendChild(dialog);
    }
    document.getElementsByClassName('itemDB-rejection-modal')[0].showModal();
}

const fetchItemDb = (url, scriptName) => {
    return new Promise((res, rej) => {
        fetch(url, {credentials: 'include'})
            .then(response => response.json())
            .then(json => res(json))
            .catch(e => {
                if(e.name !== 'TypeError') throw(e);
                console.log(`[${scriptName}] You just saw two scary red errors in the console! Don't worry, they're normal until March.`);
                fetch(url)
                    .then(response => {
                        if(response.status === 401) {
                            onUnauthorized(scriptName);
                            document.querySelectorAll('.itemDB-rejection-modal button').forEach(button => 
                                button.addEventListener('click', (e) => {
                                    if(e.target.textContent === '✖️ Close') rej('Canceled');
                                    else setTimeout(async () => res(await fetchItemDb(url, scriptName)), 2000);
                                }), {once: true});
                        } else res(response.json());
                    }).catch(e => console.error(e));
            })
    });
}

const itemDBCSS = `<style>
.itemDB-rejection-modal {
    display: flex;
    justify-content: space-between;
    width: 30%;
    flex-wrap: wrap;

    & p {
        width: 100%;
    }
}
</style>`;