// ==UserScript==
// @name        8chan Style Script
// @namespace   8chanSS
// @match       *://8chan.moe/*
// @match       *://8chan.se/*
// @grant       none
// @version     1.1
// @author      Anon
// @run-at      document-end
// @description Script to style 8chan
// @license     MIT
// @downloadURL none
// ==/UserScript==

// Header Catalog Links
// Function to append /catalog.html to links
function appendCatalogToLinks() {
    const navboardsSpan = document.getElementById('navBoardsSpan');
    if (navboardsSpan) {
        const links = navboardsSpan.getElementsByTagName('a');
        for (let link of links) {
            if (link.href && !link.href.endsWith('/catalog.html')) {
                link.href += '/catalog.html';
            }
        }
    }
}

// Initial call to append links on page load
appendCatalogToLinks();

// Set up a MutationObserver to watch for changes in the #navboardsSpan div
const observer = new MutationObserver(appendCatalogToLinks);
const config = { childList: true, subtree: true };

const navboardsSpan = document.getElementById('navBoardsSpan');
if (navboardsSpan) {
    observer.observe(navboardsSpan, config);
}


// Scroll to last read post
// Function to save the scroll position
const MAX_PAGES = 10; // Maximum number of pages to store scroll positions
const currentPage = window.location.href;

// Specify pages to exclude from scroll position saving
const excludedPages = [
    '*/catalog.html', // Add any other pages you want to exclude
];

// Function to save the scroll position for the current page
function saveScrollPosition() {
    // Check if the current page is in the excluded pages list
    if (excludedPages.includes(currentPage)) {
        return; // Skip saving scroll position for excluded pages
    }

    const scrollPosition = window.scrollY; // Get the current vertical scroll position
    localStorage.setItem(`scrollPosition_${currentPage}`, scrollPosition); // Store it in localStorage with a unique key

    // Manage the number of stored scroll positions
    manageScrollStorage();
}

// Function to restore the scroll position for the current page
function restoreScrollPosition() {
    const savedPosition = localStorage.getItem(`scrollPosition_${currentPage}`); // Retrieve the saved position for the current page
    if (savedPosition) {
        window.scrollTo(0, parseInt(savedPosition, 10)); // Scroll to the saved position
    }
}

// Function to manage the number of stored scroll positions
function manageScrollStorage() {
    const keys = Object.keys(localStorage).filter(key => key.startsWith('scrollPosition_'));

    // If the number of stored positions exceeds the limit, remove the oldest
    if (keys.length > MAX_PAGES) {
        // Sort keys by their creation time (assuming the order of keys reflects the order of storage)
        keys.sort((a, b) => {
            return localStorage.getItem(a) - localStorage.getItem(b);
        });
        // Remove the oldest entries until we are within the limit
        while (keys.length > MAX_PAGES) {
            localStorage.removeItem(keys.shift());
        }
    }
}

// Event listener to save scroll position before the page unloads
window.addEventListener('beforeunload', saveScrollPosition);

// Restore scroll position when the page loads
window.addEventListener('load', restoreScrollPosition);

// Toggle Announcement & Posting Form
// Create the button
const button = document.createElement('button');
button.style.margin = '10px';
const postingFormDiv = document.getElementById('postingForm');
const announcementDiv = document.getElementById('dynamicAnnouncement');
const panelMessageDiv = document.getElementById('panelMessage');

// Check if divs exist
if (postingFormDiv && announcementDiv && panelMessageDiv) {
    // Insert the button before the announcement div
    postingFormDiv.parentNode.insertBefore(button, postingFormDiv);
    // Retrieve the visibility states from localStorage
    const isPostingFormVisible = localStorage.getItem('postingFormVisible') === 'true';
    const isAnnouncementVisible = localStorage.getItem('announcementVisible') === 'true';
    const isPanelMessageVisible = localStorage.getItem('panelMessageVisible') === 'true';
    // Set the initial state of the divs and button based on stored values
    if (isPostingFormVisible) {
        postingFormDiv.style.display = 'block'; // Show the posting div
    } else {
        postingFormDiv.style.display = 'none'; // Hide the posting div
    }
    if (isAnnouncementVisible) {
        announcementDiv.style.display = 'block'; // Show the announcement div
    } else {
        announcementDiv.style.display = 'none'; // Hide the announcement div
    }
    if (isPanelMessageVisible) {
        panelMessageDiv.style.display = 'block'; // Show the panel message div
    } else {
        panelMessageDiv.style.display = 'none'; // Hide the panel message div
    }
    // Update button text based on the visibility of the announcement div
    button.textContent = (isPostingFormVisible && isAnnouncementVisible && isPanelMessageVisible) ? '-' : '+';
    // Add click event listener to the button
    button.addEventListener('click', () => {
        // Toggle visibility of both divs
        const isCurrentlyVisible = postingFormDiv.style.display !== 'none' && announcementDiv.style.display !== 'none' && panelMessageDiv.style.display !== 'none';

        if (isCurrentlyVisible) {
            postingFormDiv.style.display = 'none'; // Hide the posting div
            announcementDiv.style.display = 'none'; // Hide the announcement div
            panelMessageDiv.style.display = 'none'; // Hide the panel message div
            button.textContent = '+'; // Change button text
            localStorage.setItem('postingFormVisible', 'false'); // Save state
            localStorage.setItem('announcementVisible', 'false'); // Save state
            localStorage.setItem('panelMessageVisible', 'false'); // Save state
        } else {
            postingFormDiv.style.display = 'block'; // Hide the posting div
            announcementDiv.style.display = 'block'; // Show the announcement div
            panelMessageDiv.style.display = 'block'; // Show the panel message div
            button.textContent = '-'; // Change button text
            localStorage.setItem('postingFormVisible', 'true'); // Save state
            localStorage.setItem('announcementVisible', 'true'); // Save state
            localStorage.setItem('panelMessageVisible', 'true'); // Save state
        }
    });
}

// Keyboard Shortcuts
// QR (CTRL+Q)
function toggleDiv(event) {
    // Check if Ctrl + Q is pressed
    if (event.ctrlKey && (event.key === 'q' || event.key === 'Q')) {
        const hiddenDiv = document.getElementById('quick-reply');
        // Toggle QR
        if (hiddenDiv.style.display === 'none' || hiddenDiv.style.display === '') {
            hiddenDiv.style.display = 'block'; // Show the div
        }
        else {
            hiddenDiv.style.display = 'none'; // Hide the div
        }
    }
}
// Add an event listener for keydown events
document.addEventListener('keydown', toggleDiv);


// Custom CSS injection
function addCustomCSS(css) {
    if (!css) return;
    const style = document.createElement('style');
    style.type = 'text/css';
    style.appendChild(document.createTextNode(css));
    document.head.appendChild(style);
}
// Get the current URL path
const currentPath = window.location.pathname.toLowerCase();
const currentHost = window.location.hostname.toLowerCase();

// Apply CSS based on URL pattern
// Thread page CSS
if (/\/res\/[^/]+\.html$/.test(currentPath)) {
    const css = `
/* Quick Reply */
#quick-reply {
display: block;
padding: 0 !important;
top: auto !important;
bottom: 0;
left: auto !important;
position: fixed;
right: 0 !important;
}
#qrbody {
resize: vertical;
max-height: 50vh;
}
.floatingMenu {
padding: 0 !important;
}
#qrFilesBody {
max-width: 300px;
}
/* Banner */
#bannerImage {
width: 305px;
right: 0;
position: fixed;
top: 26px;
}
.innerUtility.top {
margin-top: 2em;
background-color: transparent !important;
color: var(--link-color) !important;
}
.innerUtility.top a {
color: var(--link-color) !important;
}
/* Hover Posts */
img[style*="position: fixed"] {
position: fixed !important;
max-width: 80vw;
max-height: 80vh !important;
z-index: 200;
}
.quoteTooltip {
z-index: 110;
}
/* (You) Replies */
.innerPost:has(.youName) {
border-left: solid #68b723 5px;
}
.innerPost:has(.quoteLink.you) {
border-left: solid #dd003e 5px;
}
/* Filename */
.originalNameLink {
display: inline;
overflow-wrap: anywhere;
white-space: normal;
}
`;
    addCustomCSS(css);
}

if (/^8chan\.(se|moe)$/.test(currentHost)) {
    // General CSS for all pages
    const css = `
/* Margins */
#mainPanel {
margin-left: 10px;
margin-right: 305px;
margin-top: 0;
margin-bottom: 0;
}
.innerPost {
margin-left: 40px;
display: block;
}
/* Cleanup */
#footer,
#actionsForm,
#navTopBoardsSpan,
.coloredIcon.linkOverboard,
.coloredIcon.linkSfwOver,
.coloredIcon.multiboardButton,
#navLinkSpan>span:nth-child(9),
#navLinkSpan>span:nth-child(11),
#navLinkSpan>span:nth-child(13) {
display: none;
}
/* Header */
#dynamicHeaderThread,
.navHeader {
box-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
}
/* Thread Watcher */
#watchedMenu .floatingContainer {
min-width: 330px;
}
.quoteTooltip .innerPost {
overflow: hidden;
}
`;
    addCustomCSS(css);
}

// Catalog page CSS
if (/\/catalog\.html$/.test(currentPath)) {
    const css = `
#dynamicAnnouncement {
display: none;
}
#postingForm {
margin: 2em auto;
}
`;
    addCustomCSS(css);
}