1. DOM 조작 최소화
캐싱 셀렉터: 자주 사용하는 DOM 요소는 반복해서 선택하지 말고 변수에 저장하여 재사용하십시오.

// Before
$('#log-messages').html(...);

// After
const $logMessages = $('#log-messages');
$logMessages.html(...);
배치 업데이트: 여러 DOM 변경 사항을 한 번에 적용하여 리플로우와 리페인트를 줄입니다.

const logHtml = logs.map(...).join('');
$logMessages.html(logHtml);
2. 이벤트 핸들러 최적화
이벤트 위임 사용: 많은 개별 요소에 이벤트 핸들러를 추가하는 대신 부모 요소에 위임하여 성능을 향상시킬 수 있습니다.

// Before
$('.view-html').off('click').on('click', function() { ... });

// After
$('#data-table-body').off('click').on('click', '.view-html', function() { ... });
3. 비동기 처리 개선
비동기 함수 최적화: async/await 패턴을 일관되게 사용하고, 불필요한 await 호출을 피합니다.

// Before
async function example() {
    await someAsyncFunction();
    return;
}

// After
async function example() {
    return someAsyncFunction();
}
동시 요청 관리: 최대 동시 요청 수를 효과적으로 관리하여 리소스 사용을 최적화합니다.
4. 로깅 최적화
배치 로깅: 로그를 한 번에 업데이트하여 빈번한 GM_setValue 호출을 줄입니다.

const logBatch = [];
function log(message, type = 'info') {
    const timestamp = new Date().toLocaleString();
    logBatch.push({ timestamp, message, type });
    if (logBatch.length >= 10) {
        const existingLogs = JSON.parse(GM_getValue('logs', '[]'));
        const updatedLogs = existingLogs.concat(logBatch).slice(-1000);
        GM_setValue('logs', JSON.stringify(updatedLogs));
        logBatch.length = 0;
        UI.updateLogs();
    }
    // 콘솔 로그는 유지
}
// 스크립트 종료 시 남은 로그 저장
window.addEventListener('beforeunload', () => {
    if (logBatch.length) {
        const existingLogs = JSON.parse(GM_getValue('logs', '[]'));
        const updatedLogs = existingLogs.concat(logBatch).slice(-1000);
        GM_setValue('logs', JSON.stringify(updatedLogs));
    }
});
5. 데이터 저장 및 관리 최적화
방문한 URL 관리: Set 객체를 사용하여 URL을 관리하고, GM_setValue 호출을 최소화합니다.

const visitedUrls = new Set(JSON.parse(GM_getValue('visitedUrls', '[]')));

function markUrlAsVisited(url) {
    visitedUrls.add(url);
    if (visitedUrls.size % 100 === 0) { // 예: 100건마다 저장
        GM_setValue('visitedUrls', JSON.stringify([...visitedUrls]));
    }
}

// 크롤링 종료 시 저장
function finalizeCrawl(status) {
    // 기존 로직...
    GM_setValue('visitedUrls', JSON.stringify([...visitedUrls]));
}
6. UI 업데이트 최적화
데이터 테이블 렌더링: 데이터가 많을 경우 가상 스크롤 또는 페이지네이션을 도입하여 렌더링 부담을 줄입니다.
차트 업데이트 최적화: 데이터가 변경될 때만 차트를 업데이트하고, 필요 이상의 재생성을 피합니다.

function renderChart() {
    if (!chartInstance) {
        const ctx = document.getElementById('data-chart').getContext('2d');
        chartInstance = new Chart(ctx, { /* 초기 설정 */ });
    } else {
        // 데이터 업데이트만 수행
        chartInstance.data = newData;
        chartInstance.update();
    }
}
7. 메모리 관리 개선
불필요한 데이터 제거: 크롤링이 완료되거나 중지되었을 때, 필요 없는 데이터나 참조를 해제하여 메모리 누수를 방지합니다.

function finalizeCrawl(status) {
    // 기존 로직...
    requestQueue = [];
    data = [];
    visitedUrls.clear();
    // ...
}
8. 코드 구조 및 모듈화 개선
모듈 간 의존성 최소화: 각 모듈이 독립적으로 작동할 수 있도록 설계하여 유지보수성과 확장성을 높입니다.
함수 분리 및 재사용성 증대: 중복되는 코드를 함수로 분리하여 재사용을 촉진합니다.
9. 비동기 요청 최적화
HTTP 요청 최적화: 캐싱 가능한 요청에 대해 캐시를 활용하고, 필요한 경우에만 새 요청을 보냅니다.
프록시 사용 최소화: 프록시 설정이 있을 때만 프록시를 사용하도록 하여 불필요한 네트워크 지연을 줄입니다.
10. 라이브러리 사용 최적화
필요한 기능만 로드: jQuery, Chart.js, xlsx 라이브러리 중 실제로 필요한 기능만 로드하거나, 경량화된 대안을 고려합니다.
라이브러리 버전 관리: 사용하는 라이브러리의 최신 안정 버전을 사용하여 성능 및 보안 향상을 도모합니다.
11. 에러 처리 및 안정성 향상
에러 로깅 개선: 에러 발생 시 자세한 정보를 로그에 남기고, 필요한 경우 재시도 로직을 강화합니다.
예외 처리를 통한 안정성 확보: 모든 비동기 함수에 try/catch 블록을 추가하여 예기치 않은 오류로 인한 크래시를 방지합니다.
12. 스케줄러 최적화
정확한 타이밍 관리: setTimeout과 setInterval의 정확성을 높이고, 스케줄링 간격을 유연하게 조정합니다.
스케줄링 충돌 방지: 여러 스케줄링 작업이 동시에 실행되지 않도록 관리합니다.
13. 빌드 및 번들링 고려
코드 번들링: 모듈을 하나의 파일로 번들링하여 로드 시간을 단축합니다.
압축 및 난독화: 코드 크기를 줄이고, 난독화를 통해 보안을 강화할 수 있습니다.
14. 성능 모니터링 도구 도입
프로파일링 도구 사용: 브라우저의 개발자 도구나 다른 프로파일링 도구를 사용하여 병목 지점을 식별하고 최적화합니다.
로깅 수준 조정: 필요에 따라 로깅의 상세 수준을 조정하여 불필요한 로그로 인한 성능 저하를 방지합니다.                          이걸 바탕으로 밑에 코드를 개선해봐 // ==UserScript==
// @name         Advanced Web Crawler Enhanced Pro Optimized v6.2.0
// @namespace    http://tampermonkey.net/
// @version      6.2.0
// @description  Optimized and enhanced version of Advanced Web Crawler Enhanced Pro with improved error handling, asynchronous processing, performance optimizations, enhanced user experience, automatic crawling stop on page navigation, settings templates, real-time graph updates, and extended search engine handlers.
// @author       Your Name
// @match        https://www.google.com/search*
// @match        https://www.bing.com/search*
// @match        https://search.yahoo.com/search*
// @match        https://duckduckgo.com/*
// @match        https://www.baidu.com/s*
// @match        https://www.yandex.com/search/*
// @match        https://search.naver.com/search*
// @match        https://search.daum.net/search*
// @match        https://www.ask.com/*
// @match        https://www.ecosia.org/search*
// @match        https://www.startpage.com/*
// @match        https://searx.me/*
// @match        https://www.dogpile.com/*
// @match        https://www.bing.com/images*
// @grant        GM_xmlhttpRequest
// @grant        GM_setValue
// @grant        GM_getValue
// @grant        GM_deleteValue
// @connect      *
// @require      https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js
// @require      https://cdn.jsdelivr.net/npm/chart.js
// @require      https://cdnjs.cloudflare.com/ajax/libs/xlsx/0.18.5/xlsx.full.min.js
// ==/UserScript==

(function() {
    'use strict';

    // Configuration Module with Templates
    const Config = (function() {
        const DEFAULT_SETTINGS = {
            delay: 2000,
            delayRandom: 500,
            maxPages: 3,
            userAgents: [
                'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko)',
                'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15',
                'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko)',
                'Mozilla/5.0 (iPhone; CPU iPhone OS 14_0 like Mac OS X) AppleWebKit/605.1.15',
                'Mozilla/5.0 (iPad; CPU OS 14_0 like Mac OS X) AppleWebKit/605.1.15',
                'AdvancedWebCrawler/6.2 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)'
            ],
            userAgentIndex: 0,
            blacklist: [],
            whitelist: [],
            contentTypes: {
                include: ['text/html'],
                exclude: ['application/pdf', 'image/jpeg', 'image/png', 'video/mp4']
            },
            timeout: 8000,
            includeKeywords: [],
            excludeKeywords: [],
            language: [],
            minWordCount: 100,
            maxWordCount: 10000,
            maxDepth: 2,
            proxy: '',
            regexInclude: [],
            regexExclude: [],
            dataFields: {
                name: true,
                url: true,
                description: true,
                html: true,
                category: true,
                quality: true,
                language: true,
                wordCount: true,
                metaTags: false,
                headings: false
            },
            schedule: {
                enabled: false,
                startTime: '00:00',
                interval: 3600000
            },
            searchEngines: {
                google: true,
                bing: true,
                yahoo: true,
                duckduckgo: true,
                baidu: true,
                yandex: true,
                naver: true,
                daum: true,
                ask: true,
                ecosia: true,
                startpage: true,
                searx: true,
                dogpile: true,
                bingimages: true
            },
            retryAttempts: 3,
            retryDelay: 2000,
            respectRobots: true,
            maxConcurrentRequests: 3,
            dataVisualization: true,
            exportFormats: {
                csv: true,
                json: true,
                xml: true,
                xls: true
            },
            advancedLogging: true,
            enableCaptchas: false,
            customKeywords: {},
            templates: {}, // New: Settings Templates
            currentTab: 'logs'
        };

        const settings = { ...DEFAULT_SETTINGS, ...getSavedSettings() };

        function getSavedSettings() {
            return GM_getValue('settings', DEFAULT_SETTINGS);
        }

        function saveSettings(newSettings) {
            GM_setValue('settings', newSettings);
            Object.assign(settings, newSettings);
        }

        function resetSettings() {
            GM_setValue('settings', DEFAULT_SETTINGS);
            Object.assign(settings, DEFAULT_SETTINGS);
        }

        function saveTemplate(name) {
            Config.settings.templates[name] = { ...settings };
            saveSettings(Config.settings);
            Logger.log(`설정 템플릿 '${name}'이(가) 저장되었습니다.`, 'success');
        }

        function loadTemplate(name) {
            if (Config.settings.templates[name]) {
                saveSettings(Config.settings.templates[name]);
                Logger.log(`설정 템플릿 '${name}'이(가) 불러와졌습니다.`, 'success');
            } else {
                Logger.log(`설정 템플릿 '${name}'을(를) 찾을 수 없습니다.`, 'error');
            }
        }

        return {
            DEFAULT_SETTINGS,
            settings,
            saveSettings,
            resetSettings,
            saveTemplate,
            loadTemplate
        };
    })();

    // Logger Module
    const Logger = (function() {
        const logs = JSON.parse(GM_getValue('logs', '[]'));

        function log(message, type = 'info') {
            const timestamp = new Date().toLocaleString();
            logs.push({ timestamp, message, type });
            if (logs.length > 1000) logs.shift();
            GM_setValue('logs', JSON.stringify(logs));
            UI.updateLogs();
            if (Config.settings.advancedLogging) {
                const styles = {
                    'info': 'color: blue;',
                    'warning': 'color: orange;',
                    'error': 'color: red;',
                    'success': 'color: green; font-weight: bold;'
                };
                console.log(`%c[${timestamp}] [${type.toUpperCase()}] ${message}`, styles[type] || '');
            }
        }

        function getLogs() {
            return logs;
        }

        return {
            log,
            getLogs
        };
    })();

    // Utility Module
    const Utils = (function() {
        function escape(str, type = 'html') {
            const map = {
                html: { '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;', "'": '&#039;' },
                csv: { '"': '""' },
                xml: { '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;', "'": '&#039;' },
            };
            return String(str).replace(new RegExp(`[${Object.keys(map[type]).join('')}]`, 'g'), match => map[type][match]);
        }

        function capitalize(str) {
            return str.charAt(0).toUpperCase() + str.slice(1);
        }

        function delay(ms) {
            return new Promise(res => setTimeout(res, ms));
        }

        function generateColors(count) {
            return Array.from({length: count}, (_, i) => `hsl(${i * (360 / count)}, 70%, 50%)`);
        }

        function parseCustomKeywords(text) {
            const lines = text.split('\n').map(l => l.trim()).filter(l => l);
            const ck = {};
            lines.forEach(line => {
                const [cat, kws] = line.split(':');
                if (cat && kws) ck[cat.trim()] = kws.split(',').map(kw => kw.trim()).filter(kw => kw);
            });
            return ck;
        }

        function formatCustomKeywords(ck) {
            return Object.entries(ck).map(([c, kws]) => `${c}:${kws.join(',')}`).join('\n');
        }

        return {
            escape,
            capitalize,
            delay,
            generateColors,
            parseCustomKeywords,
            formatCustomKeywords
        };
    })();

    // UI Module
    const UI = (function() {
        function createUI() {
            const style = `
                #crawler-container {
                    position: fixed;
                    top: 20px;
                    right: 20px;
                    width: 600px;
                    height: 600px;
                    background: #fff;
                    border: 1px solid #ccc;
                    z-index: 10000;
                    font-family: Arial, sans-serif;
                    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
                    overflow: auto;
                    resize: both;
                    border-radius: 8px;
                    min-width: 300px;
                    min-height: 300px;
                }
                #crawler-header {
                    display: flex;
                    justify-content: space-between;
                    align-items: center;
                    background: #f1f1f1;
                    border-bottom: 1px solid #ccc;
                    padding: 5px 10px;
                    cursor: move;
                }
                #crawler-minimize {
                    background: none;
                    border: none;
                    font-size: 18px;
                    cursor: pointer;
                }
                #crawler-tabs { display: flex; background: #f1f1f1; border-bottom: 1px solid #ccc; }
                .crawler-tab { flex: 1; padding: 10px; text-align: center; cursor: pointer; font-weight: bold; }
                .crawler-tab.active { background: #ddd; }
                #crawler-content { padding: 10px; overflow: auto; height: calc(100% - 50px); }
                table { width: 100%; border-collapse: collapse; }
                th, td { padding: 8px; text-align: left; border-bottom: 1px solid #ddd; }
                th { background-color: #f2f2f2; cursor: pointer; }
                tr:hover { background-color: #f5f5f5; }
                .progress-bar { width: 100%; background-color: #f3f3f3; border: 1px solid #ccc; border-radius: 5px; overflow: hidden; margin-bottom: 10px; }
                .progress-bar-fill { height: 20px; background-color: #4caf50; width: 0%; transition: width 0.2s; }
                .modal { display: none; position: fixed; z-index: 10001; left: 0; top: 0; width: 100%; height: 100%; overflow: auto; background-color: rgba(0,0,0,0.4); }
                .modal-content { background-color: #fff; margin: 5% auto; padding: 20px; border: 1px solid #888; width: 80%; max-height: 80%; overflow-y: auto; border-radius: 8px; }
                .close { color: #aaa; float: right; font-size: 28px; font-weight: bold; cursor: pointer; }
                .control-buttons { margin: 10px 0; }
                .control-buttons button { padding: 8px 12px; margin-right: 8px; cursor: pointer; border: none; background-color: #4caf50; color: white; border-radius: 4px; font-size: 14px; }
                .control-buttons button:disabled { background-color: #a5d6a7; cursor: not-allowed; }
                .status-text { margin-top: 10px; font-weight: bold; font-size: 14px; }
                .settings-section { margin-bottom: 15px; }
                .settings-section label { display: block; margin-bottom: 5px; font-weight: bold; }
                .settings-section input[type="text"], .settings-section input[type="number"], .settings-section textarea, .settings-section select { width: 100%; padding: 5px; box-sizing: border-box; border: 1px solid #ccc; border-radius: 4px; font-size: 14px; }
                .settings-section .checkbox-group { display: flex; flex-wrap: wrap; }
                .settings-section .checkbox-group label { margin-right: 10px; font-size: 14px; }
                .settings-section .radio-group { display: flex; flex-wrap: wrap; }
                .settings-section .radio-group label { margin-right: 10px; font-size: 14px; }
                .tooltip { position: relative; display: inline-block; cursor: help; font-size: 14px; }
                .tooltip .tooltiptext { visibility: hidden; width: 220px; background-color: #555; color: #fff; text-align: center; border-radius: 6px; padding: 5px; position: absolute; z-index: 1; bottom: 125%; left: 50%; margin-left: -110px; opacity: 0; transition: opacity 0.3s; }
                .tooltip:hover .tooltiptext { visibility: visible; opacity: 1; }
                #crawler-container::-webkit-resizer { background: #f1f1f1; border: none; }
                #data-visualization { margin-top: 20px; }
                #data-chart { width: 100%; height: 300px; }
                #modal-html-content { white-space: pre-wrap; word-wrap: break-word; background-color: #f9f9f9; padding: 10px; border-radius: 4px; }
                #crawler-tabs .crawler-tab:last-child { flex: 1; }
                #previous-crawls { margin-top: 20px; }
                #previous-crawls table { width: 100%; }
                #previous-crawls th, #previous-crawls td { padding: 5px; }
                #reset-data { background-color: #f44336; }
                .spinner {
                    border: 4px solid #f3f3f3;
                    border-top: 4px solid #3498db;
                    border-radius: 50%;
                    width: 24px;
                    height: 24px;
                    animation: spin 2s linear infinite;
                    display: inline-block;
                    vertical-align: middle;
                }
                @keyframes spin {
                    0% { transform: rotate(0deg); }
                    100% { transform: rotate(360deg); }
                }
                .error-message {
                    color: red;
                    font-weight: bold;
                    margin-top: 10px;
                }
                .success-message {
                    color: green;
                    font-weight: bold;
                    margin-top: 10px;
                }
            `;
            $('head').append(`<style>${style}</style>`);
            const container = $(`
                <div id="crawler-container">
                    <div id="crawler-header">
                        <div id="crawler-tabs">
                            <div class="crawler-tab" data-tab="logs" title="로그 보기">📜 로그</div>
                            <div class="crawler-tab" data-tab="data" title="수집된 데이터 보기">📊 데이터</div>
                            <div class="crawler-tab" data-tab="settings" title="설정 변경">⚙️ 설정</div>
                            <div class="crawler-tab" data-tab="previous-crawls" title="이전 크롤링 기록">📁 기록</div>
                            <div class="crawler-tab" data-tab="templates" title="설정 템플릿">📂 템플릿</div>
                        </div>
                        <button id="crawler-minimize" title="창 최소화">─</button>
                    </div>
                    <div id="crawler-content">
                        <div id="tab-logs" style="display: none;">
                            <div class="progress-bar">
                                <div class="progress-bar-fill" style="width: 0%;"></div>
                            </div>
                            <div class="status-text">진행률: 0% (0/0 페이지)</div>
                            <div class="control-buttons">
                                <button id="start-crawling" title="크롤링을 시작합니다.">▶ 시작</button>
                                <button id="stop-crawling" title="크롤링을 중지합니다." disabled>■ 중지</button>
                                ${Config.settings.exportFormats.csv ? `<button id="download-csv" title="CSV 다운로드">📥 CSV</button>` : ''}
                                ${Config.settings.exportFormats.json ? `<button id="download-json" title="JSON 다운로드">📥 JSON</button>` : ''}
                                ${Config.settings.exportFormats.xml ? `<button id="download-xml" title="XML 다운로드">📥 XML</button>` : ''}
                                ${Config.settings.exportFormats.xls ? `<button id="download-xls" title="XLS 다운로드">📥 XLS</button>` : ''}
                                <button id="reset-data" title="모든 크롤링 데이터를 초기화합니다.">🗑️ 초기화</button>
                            </div>
                            <div id="log-messages" style="height: 200px; overflow-y: auto; background: #f9f9f9; padding: 10px; border: 1px solid #ccc; border-radius: 4px;">
                                로그 내용이 여기에 표시됩니다.
                            </div>
                            <div id="error-message" class="error-message" style="display: none;"></div>
                            <div id="success-message" class="success-message" style="display: none;"></div>
                        </div>
                        <div id="tab-data" style="display: none;">
                            <input type="text" id="search-filter" placeholder="검색 필터..." style="width: 100%; padding: 5px; margin-bottom: 10px; border: 1px solid #ccc; border-radius: 4px;">
                            <table>
                                <thead>
                                    <tr>
                                        ${Config.settings.dataFields.name ? '<th data-sort="name">사이트 이름</th>' : ''}
                                        ${Config.settings.dataFields.url ? '<th data-sort="url">주소</th>' : ''}
                                        ${Config.settings.dataFields.description ? '<th data-sort="description">설명</th>' : ''}
                                        ${Config.settings.dataFields.html ? '<th>📄 HTML 내용</th>' : ''}
                                        ${Config.settings.dataFields.category ? '<th data-sort="category">분류</th>' : ''}
                                        ${Config.settings.dataFields.quality ? '<th data-sort="quality">품질점수</th>' : ''}
                                        ${Config.settings.dataFields.language ? '<th data-sort="language">언어</th>' : ''}
                                        ${Config.settings.dataFields.wordCount ? '<th data-sort="wordCount">단어 수</th>' : ''}
                                        ${Config.settings.dataFields.metaTags ? '<th>메타 태그</th>' : ''}
                                        ${Config.settings.dataFields.headings ? '<th>헤딩</th>' : ''}
                                    </tr>
                                </thead>
                                <tbody id="data-table-body"></tbody>
                            </table>
                            ${Config.settings.dataVisualization ? `
                                <div id="data-visualization">
                                    <h3>데이터 시각화</h3>
                                    <canvas id="data-chart"></canvas>
                                </div>
                            ` : ''}
                        </div>
                        <div id="tab-settings" style="display: none;">
                            <h3>설정</h3>
                            <div class="settings-section">
                                <label for="delay-input">크롤링 딜레이 (ms):
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">기본 딜레이과 딜레이 랜덤 값을 조합하여 요청 사이의 딜레이를 설정합니다.</span>
                                    </span>
                                </label>
                                <input type="number" id="delay-input" value="${Config.settings.delay}" min="500" step="500">
                            </div>
                            <div class="settings-section">
                                <label for="delay-random-input">딜레이 랜덤 범위 (ms):
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">딜레이에 무작위 요소를 추가하여 보다 자연스러운 요청을 합니다.</span>
                                    </span>
                                </label>
                                <input type="number" id="delay-random-input" value="${Config.settings.delayRandom}" min="0" step="500">
                            </div>
                            <div class="settings-section">
                                <label for="max-pages-input">최대 크롤링 페이지 수:
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">크롤링할 최대 페이지 수를 설정하세요.</span>
                                    </span>
                                </label>
                                <input type="number" id="max-pages-input" value="${Config.settings.maxPages}" min="1">
                            </div>
                            <div class="settings-section">
                                <label for="user-agent-select">사용자 에이전트(User-Agent):
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">크롤링에 사용할 사용자 에이전트를 선택하거나 추가할 수 있습니다.</span>
                                    </span>
                                </label>
                                <select id="user-agent-select" multiple size="6">
                                    ${Config.settings.userAgents.map((ua, idx) => `<option value="${idx}" ${idx === Config.settings.userAgentIndex ? 'selected' : ''}>${ua}</option>`).join('')}
                                </select>
                                <button id="add-user-agent" style="margin-top: 5px; padding: 5px 10px; background-color: #2196F3; color: white; border-radius: 4px; font-size: 12px;">추가</button>
                                <button id="remove-user-agent" style="margin-top: 5px; padding: 5px 10px; background-color: #f44336; color: white; border-radius: 4px; font-size: 12px;">제거</button>
                            </div>
                            <div class="settings-section">
                                <label for="content-include-input">콘텐츠 유형 포함:
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">크롤링할 콘텐츠 유형을 쉼표로 구분하여 입력하세요.</span>
                                    </span>
                                </label>
                                <input type="text" id="content-include-input" value="${Config.settings.contentTypes.include.join(', ')}">
                            </div>
                            <div class="settings-section">
                                <label for="content-exclude-input">콘텐츠 유형 제외:
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">크롤링에서 제외할 콘텐츠 유형을 쉼표로 구분하여 입력하세요.</span>
                                    </span>
                                </label>
                                <input type="text" id="content-exclude-input" value="${Config.settings.contentTypes.exclude.join(', ')}">
                            </div>
                            <div class="settings-section">
                                <label for="timeout-input">크롤링 타임아웃 (ms):
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">요청이 완료되기까지 기다릴 최대 시간을 밀리초 단위로 설정합니다.</span>
                                    </span>
                                </label>
                                <input type="number" id="timeout-input" value="${Config.settings.timeout}" min="1000" step="1000">
                            </div>
                            <div class="settings-section">
                                <label for="include-keywords-input">포함할 키워드:
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">크롤링할 페이지에 반드시 포함되어야 하는 키워드를 입력하세요. 각 키워드는 줄바꿈으로 구분됩니다.</span>
                                    </span>
                                </label>
                                <textarea id="include-keywords-input" rows="3">${Config.settings.includeKeywords.join('\n')}</textarea>
                            </div>
                            <div class="settings-section">
                                <label for="exclude-keywords-input">제외할 키워드:
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">크롤링할 페이지에 포함되면 안 되는 키워드를 입력하세요. 각 키워드는 줄바꿈으로 구분됩니다.</span>
                                    </span>
                                </label>
                                <textarea id="exclude-keywords-input" rows="3">${Config.settings.excludeKeywords.join('\n')}</textarea>
                            </div>
                            <div class="settings-section">
                                <label for="regex-include-input">포함할 키워드 (정규 표현식):
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">포함할 키워드의 정규 표현식을 입력하세요. 각 패턴은 줄바꿈으로 구분됩니다.</span>
                                    </span>
                                </label>
                                <textarea id="regex-include-input" rows="3">${Config.settings.regexInclude.join('\n')}</textarea>
                            </div>
                            <div class="settings-section">
                                <label for="regex-exclude-input">제외할 키워드 (정규 표현식):
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">제외할 키워드의 정규 표현식을 입력하세요. 각 패턴은 줄바꿈으로 구분됩니다.</span>
                                    </span>
                                </label>
                                <textarea id="regex-exclude-input" rows="3">${Config.settings.regexExclude.join('\n')}</textarea>
                            </div>
                            <div class="settings-section">
                                <label for="language-select">언어 필터링:</label>
                                <select id="language-select" multiple size="10">
                                    ${[
                                        { value: 'en', text: '영어 (en)' }, { value: 'ko', text: '한국어 (ko)' },
                                        { value: 'zh', text: '중국어 (zh)' }, { value: 'ja', text: '일본어 (ja)' },
                                        { value: 'ru', text: '러시아어 (ru)' }, { value: 'es', text: '스페인어 (es)' },
                                        { value: 'fr', text: '프랑스어 (fr)' }, { value: 'de', text: '독일어 (de)' },
                                        { value: 'it', text: '이탈리아어 (it)' }, { value: 'pt', text: '포르투갈어 (pt)' },
                                        { value: 'ar', text: '아랍어 (ar)' }, { value: 'hi', text: '힌디어 (hi)' },
                                        { value: 'bn', text: '벵골어 (bn)' }, { value: 'pa', text: '펀자브어 (pa)' },
                                        { value: 'nl', text: '네덜란드어 (nl)' }, { value: 'sv', text: '스웨덴어 (sv)' },
                                        { value: 'tr', text: '터키어 (tr)' }, { value: 'vi', text: '베트남어 (vi)' },
                                        { value: 'pl', text: '폴란드어 (pl)' }, { value: 'th', text: '태국어 (th)' }
                                    ].map(lang => `<option value="${lang.value}" ${Config.settings.language.includes(lang.value) ? 'selected' : ''}>${lang.text}</option>`).join('')}
                                </select>
                            </div>
                            <div class="settings-section">
                                <label for="min-word-count-input">최소 단어 수:
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">수집할 페이지의 최소 단어 수를 설정하세요.</span>
                                    </span>
                                </label>
                                <input type="number" id="min-word-count-input" value="${Config.settings.minWordCount}" min="10" step="10">
                                <label for="max-word-count-input">최대 단어 수:
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">수집할 페이지의 최대 단어 수를 설정하세요.</span>
                                    </span>
                                </label>
                                <input type="number" id="max-word-count-input" value="${Config.settings.maxWordCount}" min="100" step="100">
                            </div>
                            <div class="settings-section">
                                <label for="max-depth-input">최대 크롤링 깊이:
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">링크를 추적할 최대 깊이를 설정하세요.</span>
                                    </span>
                                </label>
                                <input type="number" id="max-depth-input" value="${Config.settings.maxDepth}" min="1" step="1">
                            </div>
                            <div class="settings-section">
                                <label for="proxy-input">프록시 서버:
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">프록시 서버 주소를 입력하세요. 예: http://proxyserver:port</span>
                                    </span>
                                </label>
                                <input type="text" id="proxy-input" value="${Config.settings.proxy}" placeholder="http://proxyserver:port">
                            </div>
                            <div class="settings-section">
                                <label>수집할 데이터 필드:</label>
                                <div class="checkbox-group">
                                    ${Object.keys(Config.settings.dataFields).map(field => `<label><input type="checkbox" id="field-${field}" ${Config.settings.dataFields[field] ? 'checked' : ''}> ${Utils.capitalize(getFieldName(field))}</label>`).join('')}
                                </div>
                            </div>
                            <div class="settings-section">
                                <label for="retry-attempts-input">재시도 횟수:
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">요청 실패 시 재시도할 횟수를 설정하세요.</span>
                                    </span>
                                </label>
                                <input type="number" id="retry-attempts-input" value="${Config.settings.retryAttempts}" min="0" step="1">
                                <label for="retry-delay-input">재시도 딜레이 (ms):
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">재시도 시 대기할 시간을 밀리초 단위로 설정하세요.</span>
                                    </span>
                                </label>
                                <input type="number" id="retry-delay-input" value="${Config.settings.retryDelay}" min="1000" step="500">
                            </div>
                            <div class="settings-section">
                                <label>크롤링 스케줄링:</label>
                                <div class="checkbox-group">
                                    <label><input type="checkbox" id="schedule-enabled" ${Config.settings.schedule.enabled ? 'checked' : ''}> 스케줄링 활성화</label>
                                </div>
                                <div id="schedule-options" style="display: ${Config.settings.schedule.enabled ? 'block' : 'none'}; margin-top: 10px;">
                                    <label for="start-time-input">시작 시간 (HH:MM):
                                        <span class="tooltip">ℹ️
                                            <span class="tooltiptext">크롤링을 시작할 시간을 설정하세요.</span>
                                        </span>
                                    </label>
                                    <input type="time" id="start-time-input" value="${Config.settings.schedule.startTime}">
                                    <label for="interval-input">크롤링 간격 (분):
                                        <span class="tooltip">ℹ️
                                            <span class="tooltiptext">크롤링 작업 간의 간격을 분 단위로 설정하세요.</span>
                                        </span>
                                    </label>
                                    <input type="number" id="interval-input" value="${Config.settings.schedule.interval / 60000}" min="1" step="1">
                                </div>
                            </div>
                            <div class="settings-section">
                                <label>크롤링할 검색 엔진 선택:</label>
                                <div class="checkbox-group">
                                    ${Object.keys(Config.settings.searchEngines).map(engine => `<label><input type="checkbox" id="engine-${engine}" ${Config.settings.searchEngines[engine] ? 'checked' : ''}> ${Utils.capitalize(engine)}</label>`).join('')}
                                </div>
                            </div>
                            <div class="settings-section">
                                <label for="blacklist-input">블랙리스트 도메인:
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">크롤링에서 제외할 도메인을 입력하세요. 각 도메인은 줄바꿈으로 구분됩니다.</span>
                                    </span>
                                </label>
                                <textarea id="blacklist-input" rows="5">${Config.settings.blacklist.join('\n')}</textarea>
                            </div>
                            <div class="settings-section">
                                <label for="whitelist-input">화이트리스트 도메인:
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">크롤링을 허용할 도메인을 입력하세요. 각 도메인은 줄바꿈으로 구분됩니다.</span>
                                    </span>
                                </label>
                                <textarea id="whitelist-input" rows="5">${Config.settings.whitelist.join('\n')}</textarea>
                            </div>
                            <div class="settings-section">
                                <label for="respect-robots-checkbox">robots.txt 준수:
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">대상 사이트의 robots.txt 규칙을 준수하여 크롤링을 진행합니다.</span>
                                    </span>
                                </label>
                                <input type="checkbox" id="respect-robots-checkbox" ${Config.settings.respectRobots ? 'checked' : ''}>
                            </div>
                            <div class="settings-section">
                                <label for="max-concurrent-requests-input">동시 요청 최대 수:
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">한 번에 요청할 수 있는 최대 동시 요청 수를 설정하세요.</span>
                                    </span>
                                </label>
                                <input type="number" id="max-concurrent-requests-input" value="${Config.settings.maxConcurrentRequests}" min="1" step="1">
                            </div>
                            <div class="settings-section">
                                <label for="data-visualization-checkbox">데이터 시각화 활성화:
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">수집된 데이터를 시각화하여 그래프로 표시합니다.</span>
                                    </span>
                                </label>
                                <input type="checkbox" id="data-visualization-checkbox" ${Config.settings.dataVisualization ? 'checked' : ''}>
                            </div>
                            <div class="settings-section">
                                <label for="enable-captchas-checkbox">CAPTCHA 처리 활성화:
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">CAPTCHA가 감지되었을 때 자동 처리를 활성화합니다. (제한적)</span>
                                    </span>
                                </label>
                                <input type="checkbox" id="enable-captchas-checkbox" ${Config.settings.enableCaptchas ? 'checked' : ''}>
                            </div>
                            <div class="settings-section">
                                <label>데이터 내보내기 형식:</label>
                                <div class="checkbox-group">
                                    ${Object.keys(Config.settings.exportFormats).map(format => `<label><input type="checkbox" id="export-${format}" ${Config.settings.exportFormats[format] ? 'checked' : ''}> ${format.toUpperCase()}</label>`).join('')}
                                </div>
                            </div>
                            <div class="settings-section">
                                <label for="advanced-logging-checkbox">고급 로깅 활성화:
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">추가적인 로깅 정보를 활성화합니다.</span>
                                    </span>
                                </label>
                                <input type="checkbox" id="advanced-logging-checkbox" ${Config.settings.advancedLogging ? 'checked' : ''}>
                            </div>
                            <div class="settings-section">
                                <label for="custom-keywords-input">사용자 지정 키워드 분류:
                                    <span class="tooltip">ℹ️
                                        <span class="tooltiptext">사용자 지정 키워드를 추가하여 데이터 분류를 향상시킵니다. 형식: 카테고리:키워드1,키워드2,...</span>
                                    </span>
                                </label>
                                <textarea id="custom-keywords-input" rows="5">${Utils.formatCustomKeywords(Config.settings.customKeywords)}</textarea>
                            </div>
                            <div class="settings-section">
                                <label>설정 템플릿 관리:</label>
                                <div class="checkbox-group">
                                    <button id="save-template" style="padding: 8px 12px; background-color: #4caf50; color: white; border-radius: 4px; font-size: 14px; margin-right: 8px;">📁 템플릿 저장</button>
                                    <button id="load-template" style="padding: 8px 12px; background-color: #2196F3; color: white; border-radius: 4px; font-size: 14px;">📂 템플릿 불러오기</button>
                                </div>
                                <select id="template-select" style="width: 100%; padding: 5px; margin-top: 10px; border: 1px solid #ccc; border-radius: 4px;">
                                    <option value="" disabled selected>템플릿 선택</option>
                                    ${Object.keys(Config.settings.templates).map(template => `<option value="${template}">${template}</option>`).join('')}
                                </select>
                            </div>
                            <button id="save-settings" style="margin-top: 10px; padding: 10px 20px; background-color: #4caf50; color: white; border-radius: 4px; font-size: 14px;">저장</button>
                            <button id="reset-settings" style="margin-top: 10px; padding: 10px 20px; background-color: #f44336; color: white; border-radius: 4px; font-size: 14px;">초기화</button>
                        </div>
                        <div id="tab-templates" style="display: none;">
                            <h3>설정 템플릿</h3>
                            <div class="settings-section">
                                <label for="new-template-name">새 템플릿 이름:</label>
                                <input type="text" id="new-template-name" placeholder="템플릿 이름을 입력하세요">
                                <button id="create-template" style="margin-top: 5px; padding: 8px 12px; background-color: #4caf50; color: white; border-radius: 4px; font-size: 14px;">템플릿 생성</button>
                            </div>
                            <div class="settings-section">
                                <label for="existing-templates">기존 템플릿:</label>
                                <select id="existing-templates" multiple size="10" style="width: 100%; padding: 5px; border: 1px solid #ccc; border-radius: 4px;">
                                    ${Object.keys(Config.settings.templates).map(template => `<option value="${template}">${template}</option>`).join('')}
                                </select>
                                <button id="delete-template" style="margin-top: 5px; padding: 8px 12px; background-color: #f44336; color: white; border-radius: 4px; font-size: 14px;">템플릿 삭제</button>
                            </div>
                        </div>
                        <div id="tab-previous-crawls" style="display: none;">
                            <h3>이전 크롤링 기록</h3>
                            <button id="clear-previous-crawls" style="padding: 8px 12px; background-color: #f44336; color: white; border-radius: 4px; font-size: 14px; margin-bottom: 10px;">기록 초기화</button>
                            <table>
                                <thead>
                                    <tr>
                                        <th>날짜</th>
                                        <th>크롤링 수</th>
                                        <th>상태</th>
                                    </tr>
                                </thead>
                                <tbody id="previous-crawls-body"></tbody>
                            </table>
                        </div>
                    </div>
                    <div id="tab-templates" style="display: none;">
                        <!-- Templates Tab Content -->
                    </div>
                    <div id="html-modal" class="modal">
                        <div class="modal-content">
                            <span class="close">&times;</span>
                            <pre id="modal-html-content"></pre>
                        </div>
                    </div>
                </div>
            `);
            $('body').append(container);

            $('#crawler-minimize').on('click', toggleMinimize);
            $('.crawler-tab').on('click', switchTab);
            $('#save-settings').on('click', saveSettingsHandler);
            $('#reset-settings').on('click', resetSettingsHandler);
            $('#add-user-agent').on('click', addUserAgent);
            $('#remove-user-agent').on('click', removeUserAgent);
            $('#download-csv').on('click', Download.downloadCSV);
            $('#download-json').on('click', Download.downloadJSON);
            $('#download-xml').on('click', Download.downloadXML);
            $('#download-xls').on('click', Download.downloadXLS);
            $('#search-filter').on('input', filterData);
            $('#schedule-enabled').on('change', toggleScheduleOptions);
            $('#data-visualization-checkbox').on('change', toggleDataVisualization);
            $('#enable-captchas-checkbox').on('change', toggleCaptchaHandling);
            $('#save-template').on('click', saveTemplateHandler);
            $('#load-template').on('click', loadTemplateHandler);
            $('#create-template').on('click', createTemplateHandler);
            $('#delete-template').on('click', deleteTemplateHandler);
            $('#template-select').on('change', selectTemplateHandler);
            $('.close').on('click', () => $('#html-modal').hide());
            $(window).on('click', function(e) { if (e.target.id === 'html-modal') $('#html-modal').hide(); });
            $('#start-crawling').on('click', Crawling.startCrawling);
            $('#stop-crawling').on('click', Crawling.stopCrawling);
            $('#clear-previous-crawls').on('click', clearPreviousCrawls);
            $('#reset-data').on('click', resetData);
            $(document).on('keydown', handleShortcuts);
            UI.updateUI();
            makeDraggable();
        }

        function toggleMinimize() {
            $('#crawler-content').toggle();
            const isHidden = $('#crawler-content').is(':hidden');
            $('#crawler-minimize').text(isHidden ? '☐' : '─');
            Logger.log(`크롤러 창이 ${isHidden ? '최소화' : '확대'}되었습니다.`, 'info');
        }

        function switchTab() {
            const tab = $(this).data('tab');
            $('.crawler-tab').removeClass('active');
            $(this).addClass('active');
            $('#crawler-content > div').hide();
            $(`#tab-${tab}`).show();
            Config.saveSettings({ currentTab: tab });
        }

        function updateUI() {
            const currentTab = Config.settings.currentTab || 'logs';
            $(`.crawler-tab[data-tab="${currentTab}"]`).addClass('active');
            $('#crawler-content > div').hide();
            $(`#tab-${currentTab}`).show();
            updateLogs();
            updateDataTable();
            updatePreviousCrawlsUI();
            updateTemplatesUI();
            if (Config.settings.dataVisualization) DataVisualization.renderChart();
        }

        function updateLogs() {
            const logs = Logger.getLogs();
            $('#log-messages').html(logs.map(l => `<div>[${l.timestamp}] [${l.type.toUpperCase()}] ${Utils.escape(l.message)}</div>`).join(''));
            const progress = GM_getValue('progress', 0);
            const currentPage = GM_getValue('currentPage', 0);
            const totalPages = Config.settings.maxPages;
            $('.progress-bar-fill').css('width', `${progress.toFixed(2)}%`);
            $('.status-text').text(`진행률: ${progress.toFixed(2)}% (${currentPage}/${totalPages} 페이지)`);
            const latestLog = logs[logs.length -1];
            if (latestLog) {
                if (latestLog.type === 'error') {
                    $('#error-message').text(latestLog.message).show();
                    setTimeout(() => { $('#error-message').fadeOut(); }, 5000);
                }
                if (latestLog.type === 'success') {
                    $('#success-message').text(latestLog.message).show();
                    setTimeout(() => { $('#success-message').fadeOut(); }, 5000);
                }
            }
        }

        function updateDataTable() {
            const data = JSON.parse(GM_getValue('data', '[]'));
            const filter = $('#search-filter').val().toLowerCase();
            const filtered = filter ? data.filter(item => Object.keys(Config.settings.dataFields).some(field => Config.settings.dataFields[field] && String(item[field]).toLowerCase().includes(filter))) : data;
            const rows = filtered.map(item => `
                <tr>
                    ${Config.settings.dataFields.name ? `<td>${Utils.escape(item.name)}</td>` : ''}
                    ${Config.settings.dataFields.url ? `<td><a href="${Utils.escape(item.url)}" target="_blank">${Utils.escape(item.url)}</a></td>` : ''}
                    ${Config.settings.dataFields.description ? `<td>${Utils.escape(item.description)}</td>` : ''}
                    ${Config.settings.dataFields.html ? `<td><button class="view-html" data-html="${encodeURIComponent(item.html)}">📄 보기</button></td>` : ''}
                    ${Config.settings.dataFields.category ? `<td>${Utils.escape(item.category)}</td>` : ''}
                    ${Config.settings.dataFields.quality ? `<td>${Utils.escape(item.quality.toString())}</td>` : ''}
                    ${Config.settings.dataFields.language ? `<td>${Utils.escape(item.language)}</td>` : ''}
                    ${Config.settings.dataFields.wordCount ? `<td>${Utils.escape(item.wordCount.toString())}</td>` : ''}
                    ${Config.settings.dataFields.metaTags ? `<td>${Utils.escape(JSON.stringify(item.metaTags))}</td>` : ''}
                    ${Config.settings.dataFields.headings ? `<td>${Utils.escape(item.headings.join(', '))}</td>` : ''}
                </tr>
            `).join('');
            $('#data-table-body').html(rows);
            $('.view-html').off('click').on('click', function() {
                $('#modal-html-content').text(decodeURIComponent($(this).data('html')));
                $('#html-modal').show();
            });
            if (Config.settings.dataVisualization) DataVisualization.renderChart();
        }

        function updatePreviousCrawlsUI() {
            const previousCrawls = JSON.parse(GM_getValue('previousCrawls', '[]'));
            $('#previous-crawls-body').html(previousCrawls.map(crawl => `
                <tr>
                    <td>${Utils.escape(crawl.date)}</td>
                    <td>${Utils.escape(crawl.count.toString())}</td>
                    <td>${Utils.escape(crawl.status)}</td>
                </tr>
            `).join(''));
        }

        function updateTemplatesUI() {
            $('#template-select').empty().append(`<option value="" disabled selected>템플릿 선택</option>`);
            Object.keys(Config.settings.templates).forEach(template => {
                $('#template-select').append(`<option value="${template}">${template}</option>`);
            });
            $('#existing-templates').empty();
            Object.keys(Config.settings.templates).forEach(template => {
                $('#existing-templates').append(`<option value="${template}">${template}</option>`);
            });
        }

        function addUserAgent() {
            const ua = prompt("새 사용자 에이전트를 입력하세요:");
            if (ua) {
                Config.settings.userAgents.push(ua);
                Config.saveSettings({ userAgents: Config.settings.userAgents });
                updateUserAgentSelect();
                Logger.log('새 사용자 에이전트가 추가되었습니다.', 'success');
            }
        }

        function removeUserAgent() {
            const selected = $('#user-agent-select').val();
            if (selected && selected.length) {
                selected.sort((a, b) => b - a).forEach(idx => { Config.settings.userAgents.splice(idx, 1); });
                Config.settings.userAgentIndex = 0;
                Config.saveSettings({
                    userAgents: Config.settings.userAgents,
                    userAgentIndex: Config.settings.userAgentIndex
                });
                updateUserAgentSelect();
                Logger.log('선택한 사용자 에이전트가 제거되었습니다.', 'success');
            } else {
                alert('제거할 사용자 에이전트를 선택하세요.');
            }
        }

        function updateUserAgentSelect() {
            $('#user-agent-select').empty();
            Config.settings.userAgents.forEach((ua, idx) => {
                $('#user-agent-select').append(`<option value="${idx}" ${idx === Config.settings.userAgentIndex ? 'selected' : ''}>${ua}</option>`);
            });
        }

        function saveSettingsHandler() {
            const delay = parseInt($('#delay-input').val(), 10);
            const delayRandom = parseInt($('#delay-random-input').val(), 10);
            const maxPages = parseInt($('#max-pages-input').val(), 10);
            const timeout = parseInt($('#timeout-input').val(), 10);
            const minWordCount = parseInt($('#min-word-count-input').val(), 10);
            const maxWordCount = parseInt($('#max-word-count-input').val(), 10);
            const maxDepth = parseInt($('#max-depth-input').val(), 10);
            const retryAttempts = parseInt($('#retry-attempts-input').val(), 10);
            const retryDelay = parseInt($('#retry-delay-input').val(), 10);
            const interval = parseInt($('#interval-input').val(), 10) * 60000;
            const isValidSettings = !isNaN(delay) && delay >= 500 &&
                                    !isNaN(delayRandom) && delayRandom >= 0 &&
                                    !isNaN(maxPages) && maxPages >= 1 &&
                                    !isNaN(timeout) && timeout >= 1000 &&
                                    !isNaN(minWordCount) && minWordCount >= 10 &&
                                    !isNaN(maxWordCount) && maxWordCount >= 100 &&
                                    !isNaN(maxDepth) && maxDepth >= 1 &&
                                    !isNaN(retryAttempts) && retryAttempts >= 0 &&
                                    !isNaN(retryDelay) && retryDelay >= 1000 &&
                                    (!Config.settings.schedule.enabled || (!isNaN(interval) && interval >= 60000));

            if (!isValidSettings) {
                $('#error-message').text('설정값이 유효하지 않습니다. 올바른 값을 입력하세요.').show();
                setTimeout(() => { $('#error-message').fadeOut(); }, 5000);
                return;
            }

            Config.settings.delay = delay;
            Config.settings.delayRandom = delayRandom;
            Config.settings.maxPages = maxPages;
            const selectedUA = parseInt($('#user-agent-select').val(), 10);
            Config.settings.userAgentIndex = isNaN(selectedUA) ? 0 : selectedUA;
            Config.settings.contentTypes.include = $('#content-include-input').val().split(',').map(ct => ct.trim()).filter(ct => ct);
            Config.settings.contentTypes.exclude = $('#content-exclude-input').val().split(',').map(ct => ct.trim()).filter(ct => ct);
            Config.settings.timeout = timeout;
            Config.settings.includeKeywords = $('#include-keywords-input').val().split('\n').map(kw => kw.trim()).filter(kw => kw);
            Config.settings.excludeKeywords = $('#exclude-keywords-input').val().split('\n').map(kw => kw.trim()).filter(kw => kw);
            Config.settings.regexInclude = $('#regex-include-input').val().split('\n').map(rx => rx.trim()).filter(rx => rx);
            Config.settings.regexExclude = $('#regex-exclude-input').val().split('\n').map(rx => rx.trim()).filter(rx => rx);
            Config.settings.language = $('#language-select').val() || [];
            Config.settings.minWordCount = minWordCount;
            Config.settings.maxWordCount = maxWordCount;
            Config.settings.maxDepth = maxDepth;
            Config.settings.proxy = $('#proxy-input').val().trim() || Config.DEFAULT_SETTINGS.proxy;
            ['name','url','description','html','category','quality','language','wordCount','metaTags','headings'].forEach(field => {
                Config.settings.dataFields[field] = $(`#field-${field}`).is(':checked');
            });
            Config.settings.retryAttempts = retryAttempts;
            Config.settings.retryDelay = retryDelay;
            Config.settings.schedule.enabled = $('#schedule-enabled').is(':checked');
            Config.settings.schedule.startTime = $('#start-time-input').val() || Config.DEFAULT_SETTINGS.schedule.startTime;
            Config.settings.schedule.interval = Config.settings.schedule.enabled ? (isNaN(interval) ? Config.DEFAULT_SETTINGS.schedule.interval : interval) : Config.DEFAULT_SETTINGS.schedule.interval;
            Object.keys(Config.settings.searchEngines).forEach(engine => { Config.settings.searchEngines[engine] = $(`#engine-${engine}`).is(':checked'); });
            Config.settings.blacklist = $('#blacklist-input').val().split('\n').map(d => d.trim()).filter(d => d);
            Config.settings.whitelist = $('#whitelist-input').val().split('\n').map(d => d.trim()).filter(d => d);
            Config.settings.respectRobots = $('#respect-robots-checkbox').is(':checked');
            Config.settings.maxConcurrentRequests = parseInt($('#max-concurrent-requests-input').val(), 10) || Config.DEFAULT_SETTINGS.maxConcurrentRequests;
            Config.settings.dataVisualization = $('#data-visualization-checkbox').is(':checked');
            Config.settings.exportFormats.csv = $('#export-csv').is(':checked');
            Config.settings.exportFormats.json = $('#export-json').is(':checked');
            Config.settings.exportFormats.xml = $('#export-xml').is(':checked');
            Config.settings.exportFormats.xls = $('#export-xls').is(':checked');
            Config.settings.advancedLogging = $('#advanced-logging-checkbox').is(':checked');
            Config.settings.enableCaptchas = $('#enable-captchas-checkbox').is(':checked');
            Config.settings.customKeywords = Utils.parseCustomKeywords($('#custom-keywords-input').val());

            Config.saveSettings(Config.settings);
            Crawling.updateCrawlSettings();
            Logger.log('설정이 저장되었습니다.', 'success');

            if (Config.settings.schedule.enabled) {
                Scheduler.scheduleCrawling();
            }

            updateDataTable();
            if (Config.settings.dataVisualization) DataVisualization.renderChart();
        }

        function resetSettingsHandler() {
            if (confirm("기본 설정으로 초기화하시겠습니까?")) {
                Config.resetSettings();
                createUI();
                Logger.log('기본 설정으로 초기화되었습니다.', 'success');
            }
        }

        function toggleScheduleOptions() {
            $('#schedule-options').toggle($('#schedule-enabled').is(':checked'));
        }

        function toggleDataVisualization() {
            Config.settings.dataVisualization = $('#data-visualization-checkbox').is(':checked');
            Config.saveSettings({ dataVisualization: Config.settings.dataVisualization });
            $('#data-visualization').toggle(Config.settings.dataVisualization);
            Logger.log('데이터 시각화 설정이 변경되었습니다.', 'success');
            if (Config.settings.dataVisualization) DataVisualization.renderChart();
        }

        function toggleCaptchaHandling() {
            Config.settings.enableCaptchas = $('#enable-captchas-checkbox').is(':checked');
            Config.saveSettings({ enableCaptchas: Config.settings.enableCaptchas });
            Logger.log('CAPTCHA 처리 설정이 변경되었습니다.', 'success');
        }

        function filterData() {
            updateDataTable();
        }

        function clearPreviousCrawls() {
            if (confirm("이전 크롤링 기록을 모두 초기화하시겠습니까?")) {
                GM_setValue('previousCrawls', JSON.stringify([]));
                updatePreviousCrawlsUI();
                Logger.log('이전 크롤링 기록이 초기화되었습니다.', 'success');
            }
        }

        function resetData() {
            if (confirm("모든 크롤링 데이터를 초기화하시겠습니까?")) {
                GM_setValue('data', JSON.stringify([]));
                GM_setValue('visitedUrls', JSON.stringify([]));
                updateDataTable();
                Logger.log('크롤링 데이터가 초기화되었습니다.', 'success');
            }
        }

        function handleShortcuts(e) {
            if (e.ctrlKey) {
                const actions = { '1': 'logs', '2': 'data', '3': 'settings', '4': 'previous-crawls', '5': 'templates', 's': 'save', 'r': 'reset', 'p': 'start', 'q': 'stop', 'c': 'csv', 'j': 'json', 'x': 'xml', 'l': 'xls' };
                const action = actions[e.key];
                if (action) {
                    e.preventDefault();
                    switch(action) {
                        case 'logs': $('.crawler-tab[data-tab="logs"]').click(); break;
                        case 'data': $('.crawler-tab[data-tab="data"]').click(); break;
                        case 'settings': $('.crawler-tab[data-tab="settings"]').click(); break;
                        case 'previous-crawls': $('.crawler-tab[data-tab="previous-crawls"]').click(); break;
                        case 'templates': $('.crawler-tab[data-tab="templates"]').click(); break;
                        case 'save': saveSettingsHandler(); break;
                        case 'reset': resetSettingsHandler(); break;
                        case 'start': if (!Crawling.isCrawling) Crawling.startCrawling(); break;
                        case 'stop': if (Crawling.isCrawling) Crawling.stopCrawling(); break;
                        case 'csv': Config.settings.exportFormats.csv && Download.downloadCSV(); break;
                        case 'json': Config.settings.exportFormats.json && Download.downloadJSON(); break;
                        case 'xml': Config.settings.exportFormats.xml && Download.downloadXML(); break;
                        case 'xls': Config.settings.exportFormats.xls && Download.downloadXLS(); break;
                    }
                }
            }
        }

        function makeDraggable() {
            const container = document.getElementById('crawler-container');
            const header = document.getElementById('crawler-header');
            let isDragging = false;
            let startX, startY, initialX, initialY;
            header.onmousedown = function(e) {
                isDragging = true;
                startX = e.clientX;
                startY = e.clientY;
                initialX = container.offsetLeft;
                initialY = container.offsetTop;
                document.onmousemove = drag;
                document.onmouseup = stopDrag;
                return false;
            };
            function drag(e) {
                if (isDragging) {
                    let dx = e.clientX - startX;
                    let dy = e.clientY - startY;
                    container.style.left = (initialX + dx) + 'px';
                    container.style.top = (initialY + dy) + 'px';
                }
            }
            function stopDrag() {
                isDragging = false;
                document.onmousemove = null;
                document.onmouseup = null;
            }
        }

        function getFieldName(field) {
            const names = {
                name: '이름',
                url: '주소',
                description: '설명',
                html: 'HTML 내용',
                category: '분류',
                quality: '품질점수',
                language: '언어',
                wordCount: '단어 수',
                metaTags: '메타 태그',
                headings: '헤딩'
            };
            return names[field] || field;
        }

        // Template Handlers
        function saveTemplateHandler() {
            const templateName = $('#new-template-name').val().trim();
            if (!templateName) {
                alert('템플릿 이름을 입력하세요.');
                return;
            }
            Config.saveTemplate(templateName);
            updateTemplatesUI();
            $('#new-template-name').val('');
        }

        function loadTemplateHandler() {
            const selected = $('#template-select').val();
            if (!selected) {
                alert('불러올 템플릿을 선택하세요.');
                return;
            }
            Config.loadTemplate(selected);
            updateUI();
            $('#crawler-tabs .crawler-tab[data-tab="settings"]').click();
        }

        function createTemplateHandler() {
            const templateName = $('#new-template-name').val().trim();
            if (!templateName) {
                alert('템플릿 이름을 입력하세요.');
                return;
            }
            Config.saveTemplate(templateName);
            updateTemplatesUI();
            $('#new-template-name').val('');
        }

        function deleteTemplateHandler() {
            const selectedTemplates = $('#existing-templates').val();
            if (!selectedTemplates || !selectedTemplates.length) {
                alert('삭제할 템플릿을 선택하세요.');
                return;
            }
            selectedTemplates.forEach(template => {
                delete Config.settings.templates[template];
                Logger.log(`템플릿 '${template}'이(가) 삭제되었습니다.`, 'success');
            });
            Config.saveSettings({ templates: Config.settings.templates });
            updateTemplatesUI();
        }

        function selectTemplateHandler() {
            const selected = $(this).val();
            if (selected) {
                Config.loadTemplate(selected);
                updateUI();
                $('#crawler-tabs .crawler-tab[data-tab="settings"]').click();
            }
        }

        return {
            createUI,
            updateUI,
            updateLogs,
            updateDataTable,
            updatePreviousCrawlsUI,
            updateTemplatesUI
        };
    })();

    // Download Module
    const Download = (function() {
        function downloadCSV() {
            const data = JSON.parse(GM_getValue('data', '[]'));
            if (!data.length) { Logger.log('다운로드할 데이터가 없습니다.', 'warning'); return; }
            const headers = Object.keys(Config.settings.dataFields).filter(f => Config.settings.dataFields[f]).map(f => Utils.capitalize(getFieldName(f)));
            const csv = [headers.join(",")].concat(data.map(item => Object.keys(Config.settings.dataFields).filter(f => Config.settings.dataFields[f]).map(f => `"${Utils.escape(item[f], 'csv')}"`).join(","))).join("\n");
            const link = document.createElement("a");
            link.href = `data:text/csv;charset=utf-8,${encodeURIComponent(csv)}`;
            link.download = "data.csv";
            document.body.appendChild(link);
            link.click();
            document.body.removeChild(link);
            Logger.log('CSV 파일이 다운로드되었습니다.', 'success');
        }

        function downloadJSON() {
            const data = JSON.parse(GM_getValue('data', '[]'));
            if (!data.length) { Logger.log('다운로드할 데이터가 없습니다.', 'warning'); return; }
            const json = JSON.stringify(data, null, 2);
            const blob = new Blob([json], { type: "application/json" });
            const link = document.createElement("a");
            link.href = URL.createObjectURL(blob);
            link.download = "data.json";
            document.body.appendChild(link);
            link.click();
            document.body.removeChild(link);
            Logger.log('JSON 파일이 다운로드되었습니다.', 'success');
        }

        function downloadXML() {
            const data = JSON.parse(GM_getValue('data', '[]'));
            if (!data.length) { Logger.log('다운로드할 데이터가 없습니다.', 'warning'); return; }
            let xml = '<?xml version="1.0" encoding="UTF-8"?><data>';
            data.forEach(item => {
                xml += '<entry>';
                if (Config.settings.dataFields.name) xml += `<name>${Utils.escape(item.name || 'No Title', 'xml')}</name>`;
                if (Config.settings.dataFields.url) xml += `<url>${Utils.escape(item.url || '', 'xml')}</url>`;
                if (Config.settings.dataFields.description) xml += `<description>${Utils.escape(item.description || 'No Description', 'xml')}</description>`;
                if (Config.settings.dataFields.html) xml += `<html><![CDATA[${item.html || ''}]]></html>`;
                if (Config.settings.dataFields.category) xml += `<category>${Utils.escape(item.category || '', 'xml')}</category>`;
                if (Config.settings.dataFields.quality) xml += `<quality>${Utils.escape(item.quality)}</quality>`;
                if (Config.settings.dataFields.language) xml += `<language>${Utils.escape(item.language || 'unknown', 'xml')}</language>`;
                if (Config.settings.dataFields.wordCount) xml += `<wordCount>${Utils.escape(item.wordCount)}</wordCount>`;
                if (Config.settings.dataFields.metaTags) xml += `<metaTags>${Utils.escape(JSON.stringify(item.metaTags), 'xml')}</metaTags>`;
                if (Config.settings.dataFields.headings) xml += `<headings>${Utils.escape(item.headings.join('; '), 'xml')}</headings>`;
                xml += '</entry>';
            });
            xml += '</data>';
            const blob = new Blob([xml], { type: "application/xml" });
            const link = document.createElement("a");
            link.href = URL.createObjectURL(blob);
            link.download = "data.xml";
            document.body.appendChild(link);
            link.click();
            document.body.removeChild(link);
            Logger.log('XML 파일이 다운로드되었습니다.', 'success');
        }

        function downloadXLS() {
            const data = JSON.parse(GM_getValue('data', '[]'));
            if (!data.length) { Logger.log('다운로드할 데이터가 없습니다.', 'warning'); return; }
            const sheet = XLSX.utils.json_to_sheet(data.map(item => {
                const entry = {};
                if (Config.settings.dataFields.name) entry['사이트 이름'] = item.name;
                if (Config.settings.dataFields.url) entry['주소'] = item.url;
                if (Config.settings.dataFields.description) entry['설명'] = item.description;
                if (Config.settings.dataFields.html) entry['📄 HTML 내용'] = item.html;
                if (Config.settings.dataFields.category) entry['분류'] = item.category;
                if (Config.settings.dataFields.quality) entry['품질점수'] = item.quality;
                if (Config.settings.dataFields.language) entry['언어'] = item.language;
                if (Config.settings.dataFields.wordCount) entry['단어 수'] = item.wordCount;
                if (Config.settings.dataFields.metaTags) entry['메타 태그'] = JSON.stringify(item.metaTags);
                if (Config.settings.dataFields.headings) entry['헤딩'] = item.headings.join('; ');
                return entry;
            }));
            const wb = XLSX.utils.book_new();
            XLSX.utils.book_append_sheet(wb, sheet, "Data");
            XLSX.writeFile(wb, "data.xlsx");
            Logger.log('XLS 파일이 다운로드되었습니다.', 'success');
        }

        function getFieldName(field) {
            const names = {
                name: '이름',
                url: '주소',
                description: '설명',
                html: 'HTML 내용',
                category: '분류',
                quality: '품질점수',
                language: '언어',
                wordCount: '단어 수',
                metaTags: '메타 태그',
                headings: '헤딩'
            };
            return names[field] || field;
        }

        return {
            downloadCSV,
            downloadJSON,
            downloadXML,
            downloadXLS
        };
    })();

    // Data Visualization Module
    const DataVisualization = (function() {
        let chartInstance = null;

        function renderChart() {
            if (!document.getElementById('data-chart').getContext) return;
            const ctx = document.getElementById('data-chart').getContext('2d');
            if (chartInstance) chartInstance.destroy();
            const data = JSON.parse(GM_getValue('data', '[]'));
            const categories = {};
            data.forEach(item => { const cat = item.category || '기타'; categories[cat] = (categories[cat] || 0) + 1; });
            const chartData = {
                labels: Object.keys(categories),
                datasets: [{
                    label: '카테고리별 데이터 수',
                    data: Object.values(categories),
                    backgroundColor: Utils.generateColors(Object.keys(categories).length)
                }]
            };
            chartInstance = new Chart(ctx, { type: 'pie', data: chartData, options: { responsive: true } });
        }

        return {
            renderChart
        };
    })();

    // Crawling Module
    const Crawling = (function() {
        let isCrawling = GM_getValue('isCrawling', false);
        let currentPage = parseInt(GM_getValue('currentPage', 1), 10);
        let totalPages = Config.settings.maxPages;
        let progress = parseFloat(GM_getValue('progress', 0));
        let currentDepth = parseInt(GM_getValue('currentDepth', 0), 10);
        let activeRequests = 0;
        let requestQueue = [];
        let previousCrawls = JSON.parse(GM_getValue('previousCrawls', '[]'));
        const visitedUrls = new Set(JSON.parse(GM_getValue('visitedUrls', '[]')));
        let data = JSON.parse(GM_getValue('data', '[]'));
        let navigationObserver = null;

        const searchEngineHandlers = {
            google: {
                extractResults: function(doc) {
                    const results = [];
                    doc.querySelectorAll('div.g, div[data-hveid]').forEach(item => {
                        const name = item.querySelector('h3')?.innerText.trim() || 'No Title';
                        const url = item.querySelector('a')?.href || '';
                        const desc = item.querySelector('.aCOpRe, .VwiC3b')?.innerText.trim() || 'No Description';
                        if (isValidURL(url)) results.push({ name, url, description: desc });
                    });
                    return results;
                },
                getNextPageUrl: function(doc) {
                    return doc.querySelector('a#pnnext')?.href || null;
                },
                getContentContainer: function() {
                    return '#search';
                }
            },
            bing: {
                extractResults: function(doc) {
                    const results = [];
                    doc.querySelectorAll('.b_algo').forEach(item => {
                        const name = item.querySelector('h2')?.innerText.trim() || 'No Title';
                        const url = item.querySelector('h2 a')?.href || '';
                        const desc = item.querySelector('.b_caption p')?.innerText.trim() || 'No Description';
                        if (isValidURL(url)) results.push({ name, url, description: desc });
                    });
                    return results;
                },
                getNextPageUrl: function(doc) {
                    return doc.querySelector('a.sb_pagN')?.href || null;
                },
                getContentContainer: function() {
                    return '#b_content';
                }
            },
            yahoo: {
                extractResults: function(doc) {
                    const results = [];
                    doc.querySelectorAll('.Sr').forEach(item => {
                        const name = item.querySelector('h3')?.innerText.trim() || 'No Title';
                        const url = item.querySelector('a')?.href || '';
                        const desc = item.querySelector('.compText a')?.innerText.trim() || 'No Description';
                        if (isValidURL(url)) results.push({ name, url, description: desc });
                    });
                    return results;
                },
                getNextPageUrl: function(doc) {
                    return doc.querySelector('a.next')?.href || null;
                },
                getContentContainer: function() {
                    return '#web';
                }
            },
            duckduckgo: {
                extractResults: function(doc) {
                    const results = [];
                    doc.querySelectorAll('.result').forEach(item => {
                        const name = item.querySelector('.result__title')?.innerText.trim() || 'No Title';
                        const url = item.querySelector('.result__url')?.href || '';
                        const desc = item.querySelector('.result__snippet')?.innerText.trim() || 'No Description';
                        if (isValidURL(url)) results.push({ name, url, description: desc });
                    });
                    return results;
                },
                getNextPageUrl: function(doc) {
                    return doc.querySelector('a.result--more__btn')?.href || null;
                },
                getContentContainer: function() {
                    return '#links';
                }
            },
            baidu: {
                extractResults: function(doc) {
                    const results = [];
                    doc.querySelectorAll('.result').forEach(item => {
                        const name = item.querySelector('h3 a')?.innerText.trim() || 'No Title';
                        const url = item.querySelector('h3 a')?.href || '';
                        const desc = item.querySelector('.c-abstract')?.innerText.trim() || 'No Description';
                        if (isValidURL(url)) results.push({ name, url, description: desc });
                    });
                    return results;
                },
                getNextPageUrl: function(doc) {
                    return doc.querySelector('.page a:last-child')?.href || null;
                },
                getContentContainer: function() {
                    return '#content_left';
                }
            },
            yandex: {
                extractResults: function(doc) {
                    const results = [];
                    doc.querySelectorAll('.serp-item').forEach(item => {
                        const name = item.querySelector('.organic__title-text')?.innerText.trim() || 'No Title';
                        const url = item.querySelector('.organic__url-text')?.href || '';
                        const desc = item.querySelector('.organic__text')?.innerText.trim() || 'No Description';
                        if (isValidURL(url)) results.push({ name, url, description: desc });
                    });
                    return results;
                },
                getNextPageUrl: function(doc) {
                    return doc.querySelector('a.link_theme_next')?.href || null;
                },
                getContentContainer: function() {
                    return '#search-result';
                }
            },
            naver: {
                extractResults: function(doc) {
                    const results = [];
                    doc.querySelectorAll('.list_basis .item').forEach(item => {
                        const name = item.querySelector('.tit')?.innerText.trim() || 'No Title';
                        const url = item.querySelector('.link')?.href || '';
                        const desc = item.querySelector('.desc')?.innerText.trim() || 'No Description';
                        if (isValidURL(url)) results.push({ name, url, description: desc });
                    });
                    return results;
                },
                getNextPageUrl: function(doc) {
                    return doc.querySelector('a.next')?.href || null;
                },
                getContentContainer: function() {
                    return '#main_pack';
                }
            },
            daum: {
                extractResults: function(doc) {
                    const results = [];
                    doc.querySelectorAll('.wrap_cont .cont_inner').forEach(item => {
                        const name = item.querySelector('.tit_main')?.innerText.trim() || 'No Title';
                        const url = item.querySelector('.link_url')?.href || '';
                        const desc = item.querySelector('.desc_main')?.innerText.trim() || 'No Description';
                        if (isValidURL(url)) results.push({ name, url, description: desc });
                    });
                    return results;
                },
                getNextPageUrl: function(doc) {
                    return doc.querySelector('.paginate a.next')?.href || null;
                },
                getContentContainer: function() {
                    return '#mArticle';
                }
            },
            ask: {
                extractResults: function(doc) {
                    const results = [];
                    doc.querySelectorAll('.PartialSearchResults-item').forEach(item => {
                        const name = item.querySelector('.PartialSearchResults-item-title')?.innerText.trim() || 'No Title';
                        const url = item.querySelector('.PartialSearchResults-item-title a')?.href || '';
                        const desc = item.querySelector('.PartialSearchResults-item-excerpt')?.innerText.trim() || 'No Description';
                        if (isValidURL(url)) results.push({ name, url, description: desc });
                    });
                    return results;
                },
                getNextPageUrl: function(doc) {
                    return doc.querySelector('.last')?.href || null;
                },
                getContentContainer: function() {
                    return '#search-results';
                }
            },
            ecosia: {
                extractResults: function(doc) {
                    const results = [];
                    doc.querySelectorAll('.result').forEach(item => {
                        const name = item.querySelector('.result-title a')?.innerText.trim() || 'No Title';
                        const url = item.querySelector('.result-title a')?.href || '';
                        const desc = item.querySelector('.result-description')?.innerText.trim() || 'No Description';
                        if (isValidURL(url)) results.push({ name, url, description: desc });
                    });
                    return results;
                },
                getNextPageUrl: function(doc) {
                    return doc.querySelector('.pagination-link.next')?.href || null;
                },
                getContentContainer: function() {
                    return '#main';
                }
            },
            startpage: {
                extractResults: function(doc) {
                    const results = [];
                    doc.querySelectorAll('.w-gl__result').forEach(item => {
                        const name = item.querySelector('.w-gl__title')?.innerText.trim() || 'No Title';
                        const url = item.querySelector('.w-gl__title a')?.href || '';
                        const desc = item.querySelector('.w-gl__description')?.innerText.trim() || 'No Description';
                        if (isValidURL(url)) results.push({ name, url, description: desc });
                    });
                    return results;
                },
                getNextPageUrl: function(doc) {
                    return doc.querySelector('.pagination__next')?.href || null;
                },
                getContentContainer: function() {
                    return '#search_results';
                }
            },
            searx: {
                extractResults: function(doc) {
                    const results = [];
                    doc.querySelectorAll('.result').forEach(item => {
                        const name = item.querySelector('.result__title a')?.innerText.trim() || 'No Title';
                        const url = item.querySelector('.result__title a')?.href || '';
                        const desc = item.querySelector('.result__snippet')?.innerText.trim() || 'No Description';
                        if (isValidURL(url)) results.push({ name, url, description: desc });
                    });
                    return results;
                },
                getNextPageUrl: function(doc) {
                    return doc.querySelector('a.next')?.href || null;
                },
                getContentContainer: function() {
                    return '#results';
                }
            },
            dogpile: {
                extractResults: function(doc) {
                    const results = [];
                    doc.querySelectorAll('.results li')?.forEach(item => {
                        const name = item.querySelector('.result-title')?.innerText.trim() || 'No Title';
                        const url = item.querySelector('.result-title a')?.href || '';
                        const desc = item.querySelector('.result-url')?.innerText.trim() || 'No Description';
                        if (isValidURL(url)) results.push({ name, url, description: desc });
                    });
                    return results;
                },
                getNextPageUrl: function(doc) {
                    return doc.querySelector('a.next')?.href || null;
                },
                getContentContainer: function() {
                    return '#results';
                }
            },
            bingimages: {
                extractResults: function(doc) {
                    const results = [];
                    doc.querySelectorAll('.imgpt a.iusc')?.forEach(item => {
                        const url = item.getAttribute('m')?.match(/"murl":"([^"]+)"/)?.[1] || '';
                        const name = item.querySelector('img')?.alt || 'No Title';
                        if (isValidURL(url)) results.push({ name, url, description: 'Image' });
                    });
                    return results;
                },
                getNextPageUrl: function(doc) {
                    return doc.querySelector('a.sb_pagN')?.href || null;
                },
                getContentContainer: function() {
                    return '#b_content';
                }
            },
            // Add more search engine handlers as needed
        };

        function identifySearchEngine() {
            const host = window.location.hostname;
            if (host.includes('google.com')) return 'google';
            if (host.includes('bing.com')) return 'bing';
            if (host.includes('yahoo.com')) return 'yahoo';
            if (host.includes('duckduckgo.com')) return 'duckduckgo';
            if (host.includes('baidu.com')) return 'baidu';
            if (host.includes('yandex.com')) return 'yandex';
            if (host.includes('naver.com')) return 'naver';
            if (host.includes('daum.net')) return 'daum';
            if (host.includes('ask.com')) return 'ask';
            if (host.includes('ecosia.org')) return 'ecosia';
            if (host.includes('startpage.com')) return 'startpage';
            if (host.includes('searx.me')) return 'searx';
            if (host.includes('dogpile.com')) return 'dogpile';
            if (host.includes('bing.com') && window.location.pathname.includes('/images')) return 'bingimages';
            return null;
        }

        async function startCrawling() {
            if (isCrawling) {
                Logger.log('이미 크롤링이 진행 중입니다.', 'warning');
                return;
            }
            if (!Object.values(Config.settings.searchEngines).some(v => v)) {
                Logger.log('사용할 검색 엔진이 하나도 선택되지 않았습니다.', 'error');
                return;
            }
            isCrawling = true;
            Config.saveSettings({ isCrawling });
            Logger.log('크롤링을 시작합니다.', 'info');
            UI.updateLogs();
            currentPage = parseInt(GM_getValue('currentPage', 1), 10);
            totalPages = Config.settings.maxPages;
            currentDepth = parseInt(GM_getValue('currentDepth', 0), 10);
            if (!previousCrawls.some(crawl => crawl.status === '진행 중')) {
                previousCrawls.push({ date: new Date().toLocaleString(), count: 0, status: '진행 중' });
                GM_setValue('previousCrawls', JSON.stringify(previousCrawls));
                UI.updatePreviousCrawlsUI();
            }
            setButtonStates();
            await crawlPage(currentDepth);
            monitorPageNavigation();
        }

        function stopCrawling() {
            if (!isCrawling) {
                Logger.log('크롤링이 진행 중이지 않습니다.', 'warning');
                return;
            }
            isCrawling = false;
            Config.saveSettings({ isCrawling });
            Logger.log('크롤링이 중지되었습니다.', 'warning');
            finalizeCrawl('중지됨');
            UI.updateLogs();
            setButtonStates();
        }

        function setButtonStates() {
            $('#start-crawling').prop('disabled', isCrawling);
            $('#stop-crawling').prop('disabled', !isCrawling);
        }

        async function crawlPage(depth) {
            try {
                while (isCrawling && currentPage <= totalPages && depth <= Config.settings.maxDepth) {
                    Logger.log(`페이지 ${currentPage} 크롤링 시작. (깊이: ${depth})`, 'info');
                    if (Config.settings.respectRobots && !(await Robots.checkRobotsTxt(window.location.href))) {
                        Logger.log(`robots.txt에 의해 크롤링이 금지된 페이지: ${window.location.href}`, 'warning');
                        break;
                    }
                    const searchEngine = identifySearchEngine();
                    if (!searchEngine || !searchEngineHandlers[searchEngine]) {
                        Logger.log(`지원되지 않는 검색 엔진: ${window.location.hostname}`, 'error');
                        break;
                    }
                    const doc = document;
                    const handler = searchEngineHandlers[searchEngine];
                    const results = handler.extractResults(doc);
                    if (!results) { Logger.log('검색 결과를 찾을 수 없습니다.', 'error'); break; }
                    results.forEach(result => {
                        if (!isCrawling) return;
                        const { name, url, description } = result;
                        if (visitedUrls.has(url) || !isValidURL(url) ||
                            (Config.settings.whitelist.length && !Config.settings.whitelist.some(d => url.includes(d))) ||
                            Config.settings.blacklist.some(d => url.includes(d)) ||
                            (Config.settings.includeKeywords.length && !Config.settings.includeKeywords.some(k => url.includes(k) || description.includes(k))) ||
                            (Config.settings.excludeKeywords.some(k => url.includes(k) || description.includes(k))) ||
                            (Config.settings.regexInclude.length && !Config.settings.regexInclude.some(r => new RegExp(r).test(url) || new RegExp(r).test(description))) ||
                            (Config.settings.regexExclude.length && Config.settings.regexExclude.some(r => new RegExp(r).test(url) || new RegExp(r).test(description)))) {
                            return;
                        }
                        requestQueue.push({ url, depth });
                        if (activeRequests >= Config.settings.maxConcurrentRequests) return;
                    });
                    if (previousCrawls.length && previousCrawls[previousCrawls.length -1].status === '진행 중') {
                        previousCrawls[previousCrawls.length -1].count += results.length;
                        GM_setValue('previousCrawls', JSON.stringify(previousCrawls));
                        UI.updatePreviousCrawlsUI();
                    }
                    await processQueue();
                    progress = (currentPage / totalPages) * 100;
                    Config.saveSettings({ progress });
                    UI.updateLogs();
                    if (currentPage < totalPages && isCrawling) {
                        const nextUrl = handler.getNextPageUrl(doc);
                        if (nextUrl) {
                            currentPage++;
                            Config.saveSettings({ currentPage });
                            depth++;
                            Config.saveSettings({ currentDepth: depth });
                            Logger.log(`다음 페이지로 이동: ${currentPage}`, 'info');
                            await Utils.delay(Config.settings.delay + Math.random() * Config.settings.delayRandom);
                            const nextPageContent = await Fetch.fetchPageContent(nextUrl);
                            if (nextPageContent) {
                                updatePageContent(nextPageContent);
                                continue;
                            } else {
                                Logger.log('다음 페이지 내용을 가져올 수 없습니다.', 'error');
                                break;
                            }
                        } else { Logger.log('다음 페이지 링크를 찾을 수 없습니다.', 'error'); break; }
                    } else { break; }
                }
                if (isCrawling && currentPage > totalPages && activeRequests === 0 && requestQueue.length === 0) {
                    Logger.log('크롤링이 완료되었습니다.', 'success');
                    finalizeCrawl('완료됨');
                    isCrawling = false;
                    Config.saveSettings({ isCrawling });
                    setButtonStates();
                    Config.saveSettings({ progress: 100 });
                    UI.updateLogs();
                }
            } catch (error) {
                Logger.log(`크롤링 중 오류 발생: ${error.message}`, 'error');
                finalizeCrawl('오류 발생');
            }
        }

        async function processQueue() {
            while (requestQueue.length && activeRequests < Config.settings.maxConcurrentRequests && isCrawling) {
                const { url, depth } = requestQueue.shift();
                activeRequests++;
                handleRequest(url, depth).finally(() => { activeRequests--; processQueue(); });
            }
        }

        async function handleRequest(url, depth) {
            if (!isCrawling || visitedUrls.has(url)) return;
            try {
                const response = await Fetch.fetchWithRetry(url, Config.settings.retryAttempts, Config.settings.retryDelay);
                const contentType = Fetch.getContentType(response);
                if (!Fetch.isContentTypeAllowed(contentType, Config.settings.contentTypes)) {
                    Logger.log(`허용되지 않은 콘텐츠 유형(${contentType})의 URL: ${url}`, 'warning');
                    return;
                }
                const parser = new DOMParser();
                const doc = parser.parseFromString(response.responseText, 'text/html');
                const text = doc.body ? doc.body.innerText : '';
                if (Config.settings.enableCaptchas && Robots.detectCaptcha(doc)) { await Robots.handleCaptcha(url); return; }
                const wc = text.split(/\s+/).length;
                if (wc < Config.settings.minWordCount || wc > Config.settings.maxWordCount) {
                    Logger.log(`단어 수 조건에 맞지 않는 URL: ${url} (${wc} 단어)`, 'warning');
                    return;
                }
                const quality = Evaluate.evaluateContentQuality(text);
                const lang = doc.documentElement.lang || 'unknown';
                const category = Classifier.classifyKeywords(text);
                const meta = Extractor.extractMetaTags(doc);
                const headings = Extractor.extractHeadings(doc);
                if (category !== '기타' || quality > 100) {
                    const entry = { url, quality, language: lang, wordCount: wc, category };
                    if (Config.settings.dataFields.name) entry.name = Extractor.extractName(doc) || 'No Title';
                    if (Config.settings.dataFields.description) entry.description = Extractor.extractDescription(doc) || 'No Description';
                    if (Config.settings.dataFields.html) entry.html = response.responseText;
                    if (Config.settings.dataFields.metaTags) entry.metaTags = meta;
                    if (Config.settings.dataFields.headings) entry.headings = headings;
                    data.push(entry);
                    GM_setValue('data', JSON.stringify(data));
                    UI.updateDataTable();
                    Logger.log(`데이터 수집 완료: ${url}`, 'success');
                    if (Config.settings.dataVisualization) DataVisualization.renderChart();
                }
                if (depth < Config.settings.maxDepth) {
                    const links = Extractor.extractLinks(doc);
                    links.forEach(link => { if (!visitedUrls.has(link) && isValidURL(link)) requestQueue.push({ url: link, depth: depth + 1 }); });
                }
            } catch (error) {
                Logger.log(`데이터 수집 실패: ${url} - ${error.message}`, 'error');
            }
            visitedUrls.add(url);
            GM_setValue('visitedUrls', JSON.stringify([...visitedUrls]));
        }

        function finalizeCrawl(status) {
            if (previousCrawls.length) {
                previousCrawls[previousCrawls.length -1].status = status;
                GM_setValue('previousCrawls', JSON.stringify(previousCrawls));
                UI.updatePreviousCrawlsUI();
            }
            if (navigationObserver) {
                navigationObserver.disconnect();
                navigationObserver = null;
            }
        }

        function updateCrawlSettings() {
            // Placeholder for any settings update needed during crawling
        }

        function updatePageContent(content) {
            const parser = new DOMParser();
            const doc = parser.parseFromString(content, 'text/html');
            document.documentElement.innerHTML = doc.documentElement.innerHTML;
        }

        function isValidURL(url) {
            try { new URL(url); return true; }
            catch { return false; }
        }

        function monitorPageNavigation() {
            const searchEngine = identifySearchEngine();
            if (!searchEngine || !searchEngineHandlers[searchEngine]) return;
            const containerSelector = searchEngineHandlers[searchEngine].getContentContainer();
            const targetNode = document.querySelector(containerSelector);
            if (!targetNode) {
                Logger.log('페이지 내비게이션 감시 대상 노드를 찾을 수 없습니다.', 'warning');
                return;
            }
            navigationObserver = new MutationObserver((mutations) => {
                for (let mutation of mutations) {
                    if (mutation.type === 'childList') {
                        if (isCrawling) {
                            Logger.log('페이지 내비게이션 감지됨. 크롤링을 중지합니다.', 'warning');
                            Crawling.stopCrawling();
                            break;
                        }
                    }
                }
            });
            navigationObserver.observe(targetNode, { childList: true, subtree: true });
            Logger.log('페이지 내비게이션 감시가 활성화되었습니다.', 'info');
        }

        return {
            startCrawling,
            stopCrawling,
            isCrawling,
            updateCrawlSettings
        };
    })();

    // Fetch Module
    const Fetch = (function() {
        async function fetchWithRetry(url, attempts, delayMs) {
            for (let i = 1; i <= attempts; i++) {
                try {
                    return await GM_xmlhttpRequestPromise(url);
                } catch (e) {
                    Logger.log(`요청 실패 (${i}/${attempts}): ${url} - ${e.message}`, 'warning');
                    if (i < attempts) await Utils.delay(delayMs);
                }
            }
            throw new Error('모든 재시도 시도가 실패했습니다.');
        }

        function GM_xmlhttpRequestPromise(url) {
            return new Promise((resolve, reject) => {
                let reqUrl = Config.settings.proxy ? `${Config.settings.proxy}?url=${encodeURIComponent(url)}` : url;
                GM_xmlhttpRequest({
                    method: "GET",
                    url: reqUrl,
                    headers: { 'User-Agent': getCurrentUserAgent(), 'Accept': '*/*' },
                    timeout: Config.settings.timeout,
                    onload: res => (res.status >= 200 && res.status < 300) ? resolve(res) : reject(new Error(`HTTP ${res.status}`)),
                    onerror: () => reject(new Error('Request failed')),
                    ontimeout: () => reject(new Error('Request timed out'))
                });
            });
        }

        function getCurrentUserAgent() {
            const index = Config.settings.userAgentIndex % Config.settings.userAgents.length;
            return Config.settings.userAgents[index];
        }

        function getContentType(res) {
            return res.responseHeaders.split('\n').find(h => h.toLowerCase().startsWith('content-type'))?.split(':')[1].trim().split(';')[0] || '';
        }

        function isContentTypeAllowed(ct, contentTypes) {
            if (contentTypes.include.length && !contentTypes.include.includes(ct)) return false;
            if (contentTypes.exclude.includes(ct)) return false;
            return true;
        }

        async function fetchPageContent(url) {
            try {
                const response = await fetchWithRetry(url, Config.settings.retryAttempts, Config.settings.retryDelay);
                return response.responseText;
            } catch (error) {
                Logger.log(`페이지 내용 가져오기 실패: ${url} - ${error.message}`, 'error');
                return null;
            }
        }

        return {
            fetchWithRetry,
            getCurrentUserAgent,
            getContentType,
            isContentTypeAllowed,
            fetchPageContent
        };
    })();

    // Robots Module
    const Robots = (function() {
        async function checkRobotsTxt(url) {
            try {
                const parsed = new URL(url);
                const robots = `${parsed.origin}/robots.txt`;
                const res = await Fetch.fetchWithRetry(robots, 2, 2000);
                return new RobotsParser(res.responseText).isAllowed(url, Fetch.getCurrentUserAgent());
            } catch {
                Logger.log('robots.txt 확인 실패, 기본 허용.', 'warning');
                return true;
            }
        }

        function detectCaptcha(doc) {
            return doc.querySelector('iframe[src*="captcha"], form[action*="captcha"]') !== null;
        }

        async function handleCaptcha(url) {
            Logger.log(`CAPTCHA 감지됨: ${url}`, 'warning');
        }

        class RobotsParser {
            constructor(text) { this.rules = []; this.parse(text); }
            parse(text) {
                let agents = [];
                text.split('\n').forEach(line => {
                    const [key, ...val] = line.split(':').map(s => s.trim());
                    if (!key) return;
                    if (key.toLowerCase() === 'user-agent') { agents = [val.join(':').toLowerCase()]; }
                    else if (['disallow','allow'].includes(key.toLowerCase())) this.rules.push({ agents, type: key.toLowerCase(), path: val.join(':') });
                });
            }
            isAllowed(url, ua) {
                const path = new URL(url).pathname;
                let allowed = true;
                this.rules.forEach(rule => {
                    if (rule.agents.includes('*') || rule.agents.includes(ua.toLowerCase())) {
                        if (rule.type === 'disallow' && path.startsWith(rule.path)) allowed = false;
                        if (rule.type === 'allow' && path.startsWith(rule.path)) allowed = true;
                    }
                });
                return allowed;
            }
        }

        return {
            checkRobotsTxt,
            detectCaptcha,
            handleCaptcha
        };
    })();

    // Extractor Module
    const Extractor = (function() {
        function extractMetaTags(doc) {
            const metas = {};
            doc.querySelectorAll('meta[name], meta[property]').forEach(meta => {
                const name = meta.getAttribute('name') || meta.getAttribute('property');
                const content = meta.getAttribute('content');
                if (name && content) metas[name.toLowerCase()] = content;
            });
            return metas;
        }

        function extractHeadings(doc) {
            const hs = [];
            for (let i = 1; i <= 6; i++) doc.querySelectorAll(`h${i}`).forEach(h => hs.push(h.innerText.trim()));
            return hs;
        }

        function extractName(doc) { return doc.querySelector('title')?.innerText || 'No Title'; }
        function extractDescription(doc) { return doc.querySelector('meta[name="description"]')?.getAttribute('content') || 'No Description'; }
        function extractLinks(doc) { return Array.from(doc.querySelectorAll('a[href]')).map(a => a.href).filter(isValidURL); }

        return {
            extractMetaTags,
            extractHeadings,
            extractName,
            extractDescription,
            extractLinks
        };
    })();

    // Classifier Module
    const Classifier = (function() {
        function classifyKeywords(text) {
            const kws = combineKeywords();
            for (const [cat, keywords] of Object.entries(kws)) {
                if (keywords.some(kw => text.includes(kw))) return cat;
            }
            return '기타';
        }

        function combineKeywords() {
            const standard = {
                '교육': ['학교', '교육', '학생', '교수', '강의'],
                '기술': ['기술', '소프트웨어', '하드웨어', '프로그래밍', '개발'],
                '뉴스': ['뉴스', '속보', '기사', '보도'],
                '엔터테인먼트': ['영화', '음악', '연예', '게임', '드라마'],
                '스포츠': ['축구', '야구', '농구', '경기', '토너먼트'],
                '비즈니스': ['비즈니스', '경제', '주식', '투자', '시장'],
                '건강': ['건강', '의료', '헬스', '운동', '영양'],
                '과학': ['과학', '연구', '실험', '발견', '이론'],
                '문학': ['소설', '시', '문학', '작가', '책'],
                '여행': ['여행', '관광', '숙박', '비행기', '여권']
            };
            const custom = Config.settings.customKeywords || {};
            for (const [cat, kws] of Object.entries(custom)) {
                standard[cat] = standard[cat] ? [...new Set([...standard[cat], ...kws])] : kws;
            }
            return standard;
        }

        return {
            classifyKeywords
        };
    })();

    // Evaluate Module
    const Evaluate = (function() {
        function evaluateContentQuality(text) { return text.split(/\s+/).length; }

        return {
            evaluateContentQuality
        };
    })();

    // Scheduler Module
    const Scheduler = (function() {
        let scheduleInterval = null;

        function scheduleCrawling() {
            clearInterval(scheduleInterval);
            const now = new Date();
            const [startHour, startMinute] = Config.settings.schedule.startTime.split(':').map(Number);
            const startTime = new Date(now.getFullYear(), now.getMonth(), now.getDate(), startHour, startMinute, 0);
            if (startTime < now) startTime.setDate(startTime.getDate() + 1);
            const initialDelay = startTime - now;
            setTimeout(() => {
                Crawling.startCrawling();
                scheduleInterval = setInterval(Crawling.startCrawling, Config.settings.schedule.interval);
            }, initialDelay);
            Logger.log(`크롤링 스케줄이 설정되었습니다. 시작 시간: ${startTime.toLocaleString()}, 간격: ${Config.settings.schedule.interval / 60000}분`, 'info');
        }

        return {
            scheduleCrawling
        };
    })();

    // Initialization
    function init() {
        UI.createUI();
        UI.updateUI();
        if (Config.settings.dataVisualization) DataVisualization.renderChart();
        if (Config.settings.schedule.enabled) {
            Scheduler.scheduleCrawling();
        }
        if (Config.settings.isCrawling) {
            Logger.log('크롤링 재개됨.', 'info');
            Crawling.startCrawling();
        } else {
            Logger.log('크롤러 초기화됨.', 'info');
        }
    }

    window.addEventListener('load', init);
})();