// ==UserScript==
    // @name 69shuba Novel Downloader (Background Fetch)
    // @namespace http://tampermonkey.net/
    // @version 4.13 // 하단 버튼 크기 축소 및 '모두 해제' 버튼 추가
    // @description Downloads novel text from 69shuba.com by fetching chapters in the background. Fixes encoding, extracts full content, handles 429/403 errors, and improves UI layout.
    // @author You
    // @match https://www.69shuba.com/book/*
    // @grant GM_download
    // @grant GM_xmlhttpRequest
    // @require https://code.jquery.com/jquery-3.6.0.min.js
    // ==/UserScript==
    (function() {
    'use strict';
    // Selectors and constants
    const episodeListSelector = 'ul li a[href*="/txt/"]';
    const textToRemove = '最⊥新⊥小⊥说⊥在⊥六⊥9⊥⊥书⊥⊥吧⊥⊥首⊥发！';
    let isCheckAll = false;
    let countLabel;
    // 429 에러 대응 및 딜레이 설정
    const BASE_DELAY_MS = 1500;
    const INITIAL_PAGE_DELAY_MS = 500;
    const MAX_RETRIES = 5;
    const MIN_FILE_SIZE_KB = 1;
    function log(message) { console.log(`[Tampermonkey: 69shuba Downloader] ${message}`); }
    // =======================================================================
    // 1. CSS 및 UI 수정
    // =======================================================================
    function addGlobalStyle() {
    if ($('#tampermonkey-shuba-style').length > 0) return;
    const style = document.createElement('style');
    style.id = 'tampermonkey-shuba-style';
    style.innerHTML = `
    .tampermonkey-ui-element { display: inline-block; margin-left: 5px; vertical-align: middle; }
    #tampermonkey-count-label {
    position: fixed !important;
    top: 60px !important;
    left: 50% !important;
    transform: translateX(-50%) !important;
    z-index: 99999 !important;
    background-color: #007bff !important;
    color: white !important;
    padding: 8px 15px !important;
    border-radius: 20px !important;
    font-family: sans-serif !important;
    font-size: 14px !important;
    font-weight: bold !important;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2) !important;
    pointer-events: none !important;
    min-width: 120px !important;
    text-align: center !important;
    opacity: 0.9;
    }
    #tampermonkey-controls-container {
    margin-bottom: 10px;
    padding: 10px;
    background-color: #f8f9fa;
    border-bottom: 1px solid #dee2e6;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 5px;
    position: sticky !important;
    top: 0 !important;
    z-index: 1000 !important;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
    }
    #tampermonkey-controls-container button {
    padding: 5px 10px;
    border: 1px solid #ced4da;
    border-radius: 4px;
    background-color: #fff;
    cursor: pointer;
    }
    #tampermonkey-controls-container button:hover { background-color: #e2e6ea; }
    #tampermonkey-download-button-top { background-color: #28a745 !important; color: white !important; border: none !important; }
    #tampermonkey-between-button { background-color: #17a2b8 !important; color: white !important; border: none !important; }
    /* 하단 버튼 컨테이너 스타일 */
    #tampermonkey-bottom-container {
    position: fixed !important;
    bottom: 20px !important;
    left: 50% !important;
    transform: translateX(-50%) !important;
    z-index: 9998 !important;
    display: flex !important;
    gap: 8px !important; /* 간격 조정 */
    background-color: rgba(255, 255, 255, 0.9) !important;
    padding: 8px !important;
    border-radius: 8px !important;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2) !important;
    border: 1px solid #ddd !important;
    }
    /* 하단 버튼 공통 스타일 (크기 축소) */
    .tm-bottom-btn {
    border: none !important;
    color: white !important;
    padding: 8px 16px !important; /* 크기 절반 정도로 축소 */
    text-align: center !important;
    font-size: 14px !important; /* 폰트 사이즈 축소 */
    cursor: pointer !important;
    border-radius: 6px !important;
    font-weight: bold !important;
    line-height: 1.2 !important;
    }
    #tampermonkey-download-button-bottom { background-color: #28a745 !important; }
    #tampermonkey-between-button-bottom { background-color: #17a2b8 !important; }
    #tampermonkey-uncheck-button-bottom { background-color: #6c757d !important; } /* 회색 계열 */
    .tm-bottom-btn:disabled { background-color: #cccccc !important; cursor: not-allowed !important; }
    /* 챕터 목록 레이아웃 */
    ul li { display: flex !important; align-items: center !important; line-height: normal !important; height: auto !important; }
    ul li a { white-space: nowrap !important; overflow: hidden !important; text-overflow: ellipsis !important; }
    ul li input[type="checkbox"] { flex-shrink: 0 !important; margin-top: 1px !important; }
    `;
    document.head.appendChild(style);
    }
    function updateCheckedCount() {
    if (!countLabel) return;
    const checkedCount = $(episodeListSelector).parent().find('input[type="checkbox"]:checked').length;
    countLabel.text(`선택된 항목 = ${checkedCount}개`);
    }
    function addCheckboxes() {
    let episodeIndex = 1;
    $(episodeListSelector).each(function() {
    const link = $(this);
    const listItem = link.parent();
    if (link.attr('id') === 'bookcase' || listItem.find('input[type="checkbox"]').length > 0) return;
    const checkbox = $('').css('margin-right', '5px');
    checkbox.on('change', updateCheckedCount);
    link.data({
    index: episodeIndex++,
    title: link.text().trim(),
    url: this.href
    });
    listItem.prepend(checkbox);
    });
    updateCheckedCount();
    }
    function createListPageUI() {
    if ($('#tampermonkey-controls-container').length > 0) return;
    addGlobalStyle();
    countLabel = $('').attr('id', 'tampermonkey-count-label');
    $('body').append(countLabel);
    // 상단 버튼들
    const checkAllButton = $('모두 선택').addClass('tampermonkey-ui-element');
    const uncheckAllButton = $('모두 해제').addClass('tampermonkey-ui-element');
    const betweenChkButtonTop = $('선택 사이').attr('id', 'tampermonkey-between-button').addClass('tampermonkey-ui-element');
    const downloadButtonTop = $('선택 다운로드').attr('id', 'tampermonkey-download-button-top').addClass('tampermonkey-ui-element');
    const rangeInput = $('').addClass('tampermonkey-ui-element');
    const checkTBButton = $('범위 선택').addClass('tampermonkey-ui-element');
    const uncheckTBButton = $('범위 해제').addClass('tampermonkey-ui-element');
    // 공통 핸들러
    function handleUncheckAll() {
    $(episodeListSelector).parent().find('input[type="checkbox"]').prop('checked', false);
    isCheckAll = false;
    checkAllButton.text('모두 선택');
    updateCheckedCount();
    }
    checkAllButton.on('click', function() {
    isCheckAll = !isCheckAll;
    $(episodeListSelector).parent().find('input[type="checkbox"]').prop('checked', isCheckAll);
    $(this).text(isCheckAll ? '모두 해제' : '모두 선택');
    updateCheckedCount();
    });
    uncheckAllButton.on('click', handleUncheckAll);
    downloadButtonTop.on('click', startBackgroundDownload);
    function handleRangeAction(shouldCheck, start, end) {
    if (start === undefined || end === undefined) {
    const rangeString = rangeInput.val();
    const range = rangeString.split('-').map(s => parseInt(s.trim(), 10));
    if (range.length < 1 || isNaN(range[0])) return;
    start = range.length > 1 && !isNaN(range[1]) ? Math.min(...range) : range[0];
    end = range.length > 1 && !isNaN(range[1]) ? Math.max(...range) : range[0];
    }
    $(episodeListSelector).filter((i, el) => {
    const index = $(el).data('index');
    return index >= start && index <= end;
    }).parent().find('input[type="checkbox"]').prop('checked', shouldCheck);
    updateCheckedCount();
    }
    checkTBButton.on('click', () => handleRangeAction(true));
    uncheckTBButton.on('click', () => handleRangeAction(false));
    function handleBetweenCheck() {
    const checkedIndexes = $(episodeListSelector).parent().find('input:checked').siblings('a').map((i, el) => $(el).data('index')).get();
    if (checkedIndexes.length < 2) {
    alert("범위를 지정하려면 최소 두 개의 체크박스를 선택해주세요.");
    return;
    }
    handleRangeAction(true, Math.min(...checkedIndexes), Math.max(...checkedIndexes));
    }
    betweenChkButtonTop.on('click', handleBetweenCheck);
    const controlsContainer = $('


    



    ').attr('id', 'tampermonkey-controls-container');
    controlsContainer.append(checkAllButton, uncheckAllButton, betweenChkButtonTop, downloadButtonTop, rangeInput, checkTBButton, uncheckTBButton);
    controlsContainer.insertBefore($(episodeListSelector).first().closest('ul'));
    // =======================================================================
    // 하단 고정 버튼 영역
    // =======================================================================
    const bottomContainer = $('


    



    ').attr('id', 'tampermonkey-bottom-container');
    // 1. 선택 사이
    const betweenButtonBottom = $('선택 사이')
    .attr('id', 'tampermonkey-between-button-bottom')
    .addClass('tm-bottom-btn');
    betweenButtonBottom.on('click', handleBetweenCheck);
    // 2. 선택 다운로드
    const downloadButtonBottom = $('선택 다운로드')
    .attr('id', 'tampermonkey-download-button-bottom')
    .addClass('tm-bottom-btn');
    downloadButtonBottom.on('click', startBackgroundDownload);
    // 3. 모두 해제 (추가됨)
    const uncheckButtonBottom = $('모두 해제')
    .attr('id', 'tampermonkey-uncheck-button-bottom')
    .addClass('tm-bottom-btn');
    uncheckButtonBottom.on('click', handleUncheckAll);
    // 순서: [선택 사이] [선택 다운로드] [모두 해제]
    bottomContainer.append(betweenButtonBottom, downloadButtonBottom, uncheckButtonBottom);
    $('body').append(bottomContainer);
    }
    /**
    * 원시 HTML 응답에서 소설 본문 텍스트와 제목을 파싱하여 객체로 반환합니다.
    */
    function parseRawHtml(rawHtml) {
    const $tempDiv = $('


    ').html(rawHtml);
    const $txtNav = $tempDiv.find('.txtnav');
    let chapterTitle = "[제목 추출 실패]";
    let finalContent = "[오류: 본문 영역을 찾을 수 없음]";
    if ($txtNav.length === 0) {
    log("Error: '.txtnav' area not found in fetched HTML.");
    return { title: chapterTitle, content: finalContent };
    }
    const $contentContainer = $txtNav.clone();
    const $titleElement = $contentContainer.find('h1.hide720');
    if ($titleElement.length > 0) {
    chapterTitle = $titleElement.text().trim();
    }
    $contentContainer.find('h1.hide720, .txtinfo, #txtright, .bottom-ad, script').remove();
    let chapterContent = $contentContainer.html();
    chapterContent = chapterContent.replace(//ig, '\n');
    chapterContent = chapterContent.replace(/ /g, ' ');
    chapterContent = chapterContent.replace(/[\u2003\u3000]/g, ' ');
    chapterContent = chapterContent.replace(/<[^>]*>/g, '');
    chapterContent = chapterContent.split('\n').map(line => line.trim()).join('\n');
    chapterContent = chapterContent.replace(/(\n\s*){3,}/g, '\n\n');
    finalContent = chapterContent.trim();
    return { title: chapterTitle, content: finalContent };
    }
    function startBackgroundDownload() {
    const chaptersQueue = $(episodeListSelector).parent().find('input:checked').siblings('a').map((i, el) => {
    return {
    ...$(el).data(),
    retryCount: 0
    };
    }).get();
    if (chaptersQueue.length === 0) return alert("다운로드할 에피소드를 선택해주세요.");
    let processedCount = 0;
    const totalCount = chaptersQueue.length;
    const downloadButtons = $('#tampermonkey-download-button-top, #tampermonkey-download-button-bottom');
    const otherBottomButtons = $('.tm-bottom-btn').not(downloadButtons); // 다른 하단 버튼들
    downloadButtons.prop('disabled', true);
    otherBottomButtons.prop('disabled', true);
    function processNextChapter() {
    if (chaptersQueue.length === 0) {
    log("All chapters processed.");
    downloadButtons.prop('disabled', false).text('다운로드 완료!');
    otherBottomButtons.prop('disabled', false);
    setTimeout(() => downloadButtons.text('선택 다운로드'), 5000);
    return;
    }
    const chapter = chaptersQueue.shift();
    const currentProgress = totalCount - chaptersQueue.length;
    downloadButtons.text(`다운로드 중... (${currentProgress}/${totalCount}${chapter.retryCount > 0 ? ` (재시도 ${chapter.retryCount}/${MAX_RETRIES})` : ''})`);
    const baseUrl = chapter.url.split('/').slice(0, 3).join('/');
    GM_xmlhttpRequest({
    method: "GET",
    url: chapter.url,
    overrideMimeType: "text/html; charset=gbk",
    headers: {
    "Referer": baseUrl + '/',
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"
    },
    onload: function(response) {
    let delay = BASE_DELAY_MS;
    let needsRetry = false;
    let finalFileContent = '';
    let errorContent = '';
    const filename = `${chapter.index}.${chapter.title.replace(/[<>:"/\\|?*]/g, '_')}.txt`;
    if (response.status === 200) {
    const parsedData = parseRawHtml(response.responseText);
    let rawContent = `${parsedData.title}\n\n${parsedData.content}`;
    const cleanedContent = rawContent.replace(new RegExp(textToRemove.replace(/⊥/g, '⊥?'), 'g'), "").replace(/[\uFEFF]/g, '').trim();
    if (parsedData.content.length < (MIN_FILE_SIZE_KB * 500)) {
    errorContent = `[본문 내용이 짧음, 재시도]`;
    needsRetry = true;
    finalFileContent = cleanedContent;
    } else {
    processedCount++;
    log(`[${processedCount}/${totalCount}] Fetched ${chapter.title} successfully.`);
    finalFileContent = cleanedContent;
    GM_download({
    url: 'data:text/plain;charset=utf-8,' + encodeURIComponent(finalFileContent),
    name: filename,
    onload: () => log(`Successfully triggered download for: ${filename}`),
    onerror: (err) => log(`Error downloading ${filename}: ${JSON.stringify(err)}`)
    });
    }
    } else if (response.status === 429 || response.status === 403) {
    errorContent = `[다운로드 실패: HTTP 상태 코드 ${response.status}]`;
    needsRetry = true;
    finalFileContent = `${chapter.title}\n\n${errorContent}`;
    } else {
    processedCount++;
    log(`Failed to fetch ${chapter.title}, Status: ${response.status}`);
    errorContent = `[다운로드 실패: HTTP 상태 코드 ${response.status}]`;
    finalFileContent = `${chapter.title}\n\n${errorContent}`;
    GM_download({
    url: 'data:text/plain;charset=utf-8,' + encodeURIComponent(finalFileContent),
    name: filename
    });
    }
    if (needsRetry) {
    if (chapter.retryCount < MAX_RETRIES) {
    chapter.retryCount++;
    delay = BASE_DELAY_MS * Math.pow(2, chapter.retryCount);
    if (response.status === 429) {
    const retryAfterHeaderMatch = response.responseHeaders ? response.responseHeaders.match(/Retry-After: (\d+)/i) : null;
    if (retryAfterHeaderMatch) {
    const serverDelay = parseInt(retryAfterHeaderMatch[1], 10) * 1000;
    delay = Math.max(delay, serverDelay);
    }
    }
    log(`[RETRY] ${errorContent} for ${chapter.title}. Retrying in ${delay / 1000}s. Attempt ${chapter.retryCount}/${MAX_RETRIES}`);
    chaptersQueue.unshift(chapter);
    } else {
    processedCount++;
    log(`[FATAL] Max retries reached for ${chapter.title}. Skipping.`);
    const finalErrorContent = `${chapter.title}\n\n[다운로드 실패: ${errorContent}, 최대 재시도 횟수 ${MAX_RETRIES}회 초과]`;
    GM_download({
    url: 'data:text/plain;charset=utf-8,' + encodeURIComponent(finalErrorContent),
    name: filename
    });
    }
    }
    setTimeout(processNextChapter, delay);
    },
    onerror: function(error) {
    processedCount++;
    log(`Error fetching ${chapter.title} (Network Error): ${JSON.stringify(error)}`);
    const errorFileName = `${chapter.index}.${chapter.title.replace(/[<>:"/\\|?*]/g, '_')}.txt`;
    const errorMsg = `${chapter.title}\n\n[다운로드 실패: 네트워크 오류]`;
    GM_download({
    url: 'data:text/plain;charset=utf-8,' + encodeURIComponent(errorMsg),
    name: errorFileName
    });
    setTimeout(processNextChapter, BASE_DELAY_MS);
    }
    });
    }
    log(`Starting background download for ${totalCount} individual chapters with ${BASE_DELAY_MS/1000}s base delay.`);
    setTimeout(() => {
    processNextChapter();
    }, INITIAL_PAGE_DELAY_MS);
    }
    $(document).ready(function() {
    if (window.location.href.includes('/book/') && !window.location.href.includes('/txt/')) {
    addCheckboxes();
    createListPageUI();
    }
    });
    })();