// ==UserScript==
// @name         IDFilterBlur (Improved)
// @version      1.5
// @grant        unsafeWindow
// @include      https://8chan.moe/v/*
// @include      https://8chan.se/v/*
// @run-at       document-idle
// @license      AGPL
// @description  Blur images in posts by IDs with less than X posts, excluding your own
// @namespace    https://greasyfork.org/users/1461466
// ==/UserScript==

const MIN_POSTS = 3;
const BLUR_STRENGTH = 8;

function isOwnPost(post) {
    return post.querySelector('.youName') !== null;
}

function shouldBlurPost(id) {
    const idsRelation = unsafeWindow?.posting?.idsRelation;
    if (!idsRelation || !id) return false;
    const posts = idsRelation[id];
    return posts && posts.length < MIN_POSTS;
}

function blurImages(post) {
    const images = post.querySelectorAll('img');
    images.forEach(img => {
        img.style.filter = `blur(${BLUR_STRENGTH}px)`;
        img.style.transition = 'filter 0.3s';
    });
}

function unblurImages(post) {
    const images = post.querySelectorAll('img');
    images.forEach(img => {
        img.style.filter = '';
    });
}

function handlePost(post) {
    const idLabel = post.querySelector('.labelId');
    if (!idLabel) return;
    const id = idLabel.innerText.trim();
    if (isOwnPost(post)) {
        unblurImages(post);
    } else if (shouldBlurPost(id)) {
        blurImages(post);
    } else {
        unblurImages(post);
    }
}

function processAllPosts() {
    document.querySelectorAll('.innerOP, .postCell').forEach(post => handlePost(post));
}

// Watch for new posts
const thread = document.getElementById('threadList');
if (thread) {
    const observer = new MutationObserver(mutations => {
        for (const mutation of mutations) {
            for (const node of mutation.addedNodes) {
                if (node.nodeType === 1 && node.classList.contains('postCell')) {
                    handlePost(node);
                }
            }
        }
    });
    observer.observe(thread, { childList: true, subtree: true });
}

// Run once on page load
processAllPosts();