// ==UserScript==
// @name         Enhanced Pinterest Page Title with Username and Alt Text
// @version      3.0
// @description  Replace the page title with the user profile name, username, post title and auto alt text on Pinterest
// @author       wolffgang
// @match        *://*.pinterest.com/*
// @grant        none
// @namespace 
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';

    // Function to remove emojis from a string
    function removeEmojis(str) {
        const emojiRegex = /[\p{Emoji}]/gu;
        return str.replace(emojiRegex, '');
    }

    function updateTitle() {
        const scriptElement = document.getElementById('__PWS_INITIAL_PROPS__');
        if (!scriptElement) return;

        try {
            const data = JSON.parse(scriptElement.textContent);
            const pinData = data.initialReduxState?.pins?.[Object.keys(data.initialReduxState.pins)[0]];
            if (!pinData) return;

            const { closeup_attribution: attribution, closeup_unified_title: title, auto_alt_text: altText } = pinData;
            const { full_name: fullName, username } = attribution || {};

            // Build title components
            const titleParts = [];
            if (fullName && username) titleParts.push(`${fullName} (${username})`);
            if (title) titleParts.push(title);
            if (altText) titleParts.push(altText);

            // Update document title if we have any components
            if (titleParts.length > 0) {
                document.title = removeEmojis(titleParts.join(' - '));
            }
        } catch (error) {
            console.error('Error updating Pinterest title:', error);
        }
    }

    // MutationObserver to detect when the JSON script element is added
    const observer = new MutationObserver((mutations, obs) => {
        if (document.getElementById('__PWS_INITIAL_PROPS__')) {
            updateTitle();
            obs.disconnect(); // Stop observing once we've found the element
        }
    });

    // Start observing the document body for changes
    observer.observe(document.body, {
        childList: true,
        subtree: true
    });

    // Try immediately in case the element is already present
    if (document.getElementById('__PWS_INITIAL_PROPS__')) {
        updateTitle();
    }
})();