// ==UserScript==
// @name         Gofile.io Dual Copy Buttons for Code Blocks (Mobile Friendly, Orange Feedback)
// @namespace    http://tampermonkey.net/
// @version      1.1
// @description  Adds both a vertical and a bottom "Copy" button to each code block on Gofile.io, with mobile-friendly clipboard support and orange feedback.
// @author       nn
// @match        https://gofile.io/*
// @icon         https://gofile.io/favicon.ico
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    // Observe DOM for dynamically loaded content
    const observer = new MutationObserver(() => addCopyButtons());
    observer.observe(document.body, { childList: true, subtree: true });

    // Mobile-friendly copy function
    async function mobileFriendlyCopy(text) {
        // Try Clipboard API first
        if (navigator.clipboard && navigator.clipboard.writeText) {
            try {
                await navigator.clipboard.writeText(text);
                return true;
            } catch (err) {
                // Fallback below
            }
        }
        // Fallback: create a temporary textarea and select/copy
        try {
            const textarea = document.createElement('textarea');
            textarea.value = text;
            // Avoid scrolling to bottom on iOS
            textarea.style.position = 'fixed';
            textarea.style.top = 0;
            textarea.style.left = 0;
            textarea.style.width = '2em';
            textarea.style.height = '2em';
            textarea.style.padding = 0;
            textarea.style.border = 'none';
            textarea.style.outline = 'none';
            textarea.style.boxShadow = 'none';
            textarea.style.background = 'transparent';
            document.body.appendChild(textarea);
            textarea.focus();
            textarea.select();
            const successful = document.execCommand('copy');
            document.body.removeChild(textarea);
            return successful;
        } catch (err) {
            return false;
        }
    }

    function getCodeText(pre) {
        // Prefer <code> child if present
        const codeElem = pre.querySelector('code');
        if (codeElem) {
            return codeElem.textContent;
        } else {
            // Clone <pre>, remove button(s), get text
            const clone = pre.cloneNode(true);
            // Remove all copy buttons (vertical and bottom)
            clone.querySelectorAll('.tm-vertical-copy-btn, .tm-second-copy-btn').forEach(btn => btn.remove());
            return clone.textContent;
        }
    }

    function addCopyButtons() {
        document.querySelectorAll('pre.max-h-screen.max-w-full.language-text').forEach(pre => {
            // Ensure the parent is positioned relatively for absolute child (vertical button)
            pre.style.position = 'relative';

            // --- Vertical Copy Button (right edge) ---
            if (!pre.querySelector('.tm-vertical-copy-btn')) {
                const vertBtn = document.createElement('button');
                vertBtn.textContent = 'Copy';
                vertBtn.className = 'tm-vertical-copy-btn';
                vertBtn.style.cssText = `
                    position: absolute;
                    top: 0;
                    right: 0;
                    height: 100%;
                    width: 56px;
                    min-width: 48px;
                    background: #007aff;
                    color: #fff;
                    border: none;
                    border-radius: 0 4px 4px 0;
                    cursor: pointer;
                    font-size: 18px;
                    writing-mode: vertical-rl;
                    text-orientation: mixed;
                    z-index: 10;
                    transition: background 0.2s;
                    box-shadow: -2px 0 8px rgba(0,0,0,0.06);
                    touch-action: manipulation;
                    user-select: none;
                `;
                vertBtn.addEventListener('click', async () => {
                    const codeText = getCodeText(pre);
                    const ok = await mobileFriendlyCopy(codeText);
                    if (ok) {
                        vertBtn.textContent = 'Copied!';
                        vertBtn.style.background = 'orange';
                        setTimeout(() => {
                            vertBtn.textContent = 'Copy';
                            vertBtn.style.background = '#007aff';
                        }, 1200);
                    } else {
                        vertBtn.textContent = 'Failed!';
                        vertBtn.style.background = 'red';
                        setTimeout(() => {
                            vertBtn.textContent = 'Copy';
                            vertBtn.style.background = '#007aff';
                        }, 1200);
                    }
                });
                pre.appendChild(vertBtn);
            }

            // --- Bottom Copy Button (horizontal, centered) ---
            if (!pre.querySelector('.tm-second-copy-btn')) {
                const bottomBtn = document.createElement('button');
                bottomBtn.textContent = 'Copy';
                bottomBtn.className = 'tm-second-copy-btn';
                bottomBtn.style.cssText = `
                    display: block;
                    margin: 12px auto 0 auto;
                    padding: 12px 24px;
                    background: #007aff;
                    color: #fff;
                    border: none;
                    border-radius: 8px;
                    cursor: pointer;
                    font-size: 18px;
                    min-width: 96px;
                    touch-action: manipulation;
                    user-select: none;
                `;
                bottomBtn.addEventListener('click', async () => {
                    const codeText = getCodeText(pre);
                    const ok = await mobileFriendlyCopy(codeText);
                    if (ok) {
                        bottomBtn.textContent = 'Copied!';
                        bottomBtn.style.background = 'orange';
                        setTimeout(() => {
                            bottomBtn.textContent = 'Copy';
                            bottomBtn.style.background = '#007aff';
                        }, 1200);
                    } else {
                        bottomBtn.textContent = 'Failed!';
                        bottomBtn.style.background = 'red';
                        setTimeout(() => {
                            bottomBtn.textContent = 'Copy';
                            bottomBtn.style.background = '#007aff';
                        }, 1200);
                    }
                });
                pre.appendChild(bottomBtn);
            }
        });
    }

    // Initial run
    addCopyButtons();
})();