// ==UserScript==
// @name         职业成长刷课脚本
// @namespace    https://www.zyczedu.com/
// @version      0.1.2
// @description  自动播放视频、学完后点击“我已学完”，并切换到下一个未完成视频。
// @author       脚本喵
// @match        https://www.zyczedu.com/player/study/index*
// @match        https://www.zyczedu.com/js/player/pages/play.html*
// @icon         https://jiaobenmiao.com/img/logo2.jpg
// @grant        none
// @run-at       document-idle
// ==/UserScript==

(function () {
    'use strict';

    const LOOP_MS = 2000;
    const NEXT_DELAY_MS = 4000;
    const SUBMIT_COOLDOWN_MS = 8000;
    const STORAGE_KEY_ENABLED = 'zyczedu-auto-study-enabled';
    const STORAGE_KEY_COLLAPSED = 'zyczedu-auto-study-collapsed';

    const isMainPage = location.pathname.indexOf('/player/study/index') !== -1;
    const isPlayerFrame = location.pathname.indexOf('/js/player/pages/play.html') !== -1;

    function log(message) {
        console.log('[zyczedu-auto-study]', message);
    }

    function isAutomationEnabled() {
        try {
            return localStorage.getItem(STORAGE_KEY_ENABLED) !== '0';
        } catch (error) {
            return true;
        }
    }

    function setAutomationEnabled(enabled) {
        try {
            localStorage.setItem(STORAGE_KEY_ENABLED, enabled ? '1' : '0');
        } catch (error) {
            void error;
        }
    }

    function isPanelCollapsed() {
        try {
            return localStorage.getItem(STORAGE_KEY_COLLAPSED) === '1';
        } catch (error) {
            return false;
        }
    }

    function setPanelCollapsed(collapsed) {
        try {
            localStorage.setItem(STORAGE_KEY_COLLAPSED, collapsed ? '1' : '0');
        } catch (error) {
            void error;
        }
    }

    function isVisible(element) {
        if (!element) {
            return false;
        }
        const style = window.getComputedStyle(element);
        return style.display !== 'none' && style.visibility !== 'hidden' && style.opacity !== '0';
    }

    function parseTimeToSeconds(value) {
        if (!value) {
            return 0;
        }
        const parts = value.trim().split(':').map(Number);
        if (parts.some(Number.isNaN)) {
            return 0;
        }
        if (parts.length === 3) {
            return parts[0] * 3600 + parts[1] * 60 + parts[2];
        }
        if (parts.length === 2) {
            return parts[0] * 60 + parts[1];
        }
        return parts[0] || 0;
    }

    function formatSeconds(value) {
        const totalSeconds = Math.max(0, Math.floor(Number(value) || 0));
        const hours = Math.floor(totalSeconds / 3600);
        const minutes = Math.floor((totalSeconds % 3600) / 60);
        const seconds = totalSeconds % 60;

        return [hours, minutes, seconds]
            .map(function (part) {
                return String(part).padStart(2, '0');
            })
            .join(':');
    }

    function click(element) {
        if (!element) {
            return false;
        }
        element.dispatchEvent(new MouseEvent('click', { bubbles: true, cancelable: true }));
        return true;
    }

    function getVideosFromDocument(doc) {
        if (!doc) {
            return [];
        }
        return Array.from(doc.querySelectorAll('video'));
    }

    function tryPlayVideo(video) {
        if (!video) {
            return;
        }
        if (!video.paused && !video.ended) {
            return;
        }
        const playPromise = video.play();
        if (playPromise && typeof playPromise.catch === 'function') {
            playPromise.catch(function () {
                try {
                    video.muted = true;
                    video.play().catch(function () {});
                } catch (error) {
                    void error;
                }
            });
        }
    }

    function pauseVideo(video) {
        if (!video) {
            return;
        }
        if (!video.paused) {
            video.pause();
        }
    }

    function frameVideoHelper() {
        function tick() {
            const videos = getVideosFromDocument(document);
            if (isAutomationEnabled()) {
                videos.forEach(tryPlayVideo);
                return;
            }
            videos.forEach(pauseVideo);
        }

        tick();
        window.setInterval(tick, LOOP_MS);
    }

    function mainPageHelper() {
        let lastCourseId = '';
        let lastSubmitAt = 0;
        let lastNextAt = 0;
        let endedCourseId = '';
        let lastAction = '等待开始';
        let panelElements = null;

        function text(selector) {
            const element = document.querySelector(selector);
            return element ? element.textContent.trim() : '';
        }

        function value(selector) {
            const element = document.querySelector(selector);
            return element ? String(element.value || '').trim() : '';
        }

        function getFrameDocument() {
            const iframe = document.querySelector('#container');
            if (!iframe) {
                return null;
            }
            try {
                return iframe.contentDocument || (iframe.contentWindow && iframe.contentWindow.document) || null;
            } catch (error) {
                return null;
            }
        }

        function getActiveSection() {
            return document.querySelector('#list_chapter .section.active');
        }

        function getCurrentCourseId() {
            const active = getActiveSection();
            return value('#hiddenCourseId') || (active && active.getAttribute('data-jhx-res')) || '';
        }

        function getCurrentVideo() {
            const frameDoc = getFrameDocument();
            const videos = getVideosFromDocument(frameDoc).concat(getVideosFromDocument(document));
            return videos[0] || null;
        }

        function getPendingSections() {
            return Array.from(document.querySelectorAll('#list_chapter .section')).filter(function (section) {
                return !section.querySelector('.status-done');
            });
        }

        function getCurrentTitle() {
            const title = document.querySelector('.player-wrapper .info .title');
            return title ? title.textContent.trim() : '未识别课程';
        }

        function ensurePlayback() {
            const frameDoc = getFrameDocument();
            const videos = getVideosFromDocument(frameDoc).concat(getVideosFromDocument(document));
            videos.forEach(tryPlayVideo);
        }

        function pausePlayback() {
            const frameDoc = getFrameDocument();
            const videos = getVideosFromDocument(frameDoc).concat(getVideosFromDocument(document));
            videos.forEach(pauseVideo);
        }

        function setLastAction(message) {
            if (lastAction === message) {
                updatePanel();
                return;
            }
            lastAction = message;
            log(message);
            updatePanel();
        }

        function createPanel() {
            if (panelElements) {
                return panelElements;
            }

            const style = document.createElement('style');
            style.textContent = [
                '#zy-auto-study-panel { position: fixed; top: 90px; right: 24px; z-index: 999999; width: 240px; padding: 14px; border-radius: 12px; background: rgba(18, 28, 39, 0.92); color: #f3f7fb; box-shadow: 0 12px 30px rgba(0, 0, 0, 0.22); font: 13px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }',
                '#zy-auto-study-panel.is-collapsed { width: 240px; }',
                '#zy-auto-study-panel .zy-header { display: flex; align-items: center; justify-content: space-between; gap: 10px; }',
                '#zy-auto-study-panel .zy-title { margin: 0 0 10px; font-size: 15px; font-weight: 700; }',
                '#zy-auto-study-panel .zy-collapse { border: 0; border-radius: 8px; padding: 6px 10px; cursor: pointer; color: #f3f7fb; background: rgba(255, 255, 255, 0.12); font-size: 12px; font-weight: 700; }',
                '#zy-auto-study-panel .zy-toggle { width: 100%; border: 0; border-radius: 8px; padding: 9px 12px; cursor: pointer; color: #fff; font-size: 13px; font-weight: 700; background: #1f9d55; }',
                '#zy-auto-study-panel .zy-toggle.is-paused { background: #2563eb; }',
                '#zy-auto-study-panel .zy-grid { margin-top: 12px; display: grid; gap: 8px; }',
                '#zy-auto-study-panel.is-collapsed .zy-grid, #zy-auto-study-panel.is-collapsed .zy-toggle { display: none; }',
                '#zy-auto-study-panel.is-collapsed .zy-title { margin-bottom: 0; }',
                '#zy-auto-study-panel .zy-item { padding: 8px 10px; border-radius: 8px; background: rgba(255, 255, 255, 0.08); }',
                '#zy-auto-study-panel .zy-label { display: block; margin-bottom: 2px; color: #a9b7c6; font-size: 12px; }',
                '#zy-auto-study-panel .zy-value { display: block; color: #f8fbff; word-break: break-word; }'
            ].join('');
            document.head.appendChild(style);

            const panel = document.createElement('div');
            panel.id = 'zy-auto-study-panel';
            panel.innerHTML = [
                '<div class="zy-header"><div class="zy-title">自动学习面板</div><button type="button" class="zy-collapse" id="zy-auto-study-collapse"></button></div>',
                '<button type="button" class="zy-toggle" id="zy-auto-study-toggle"></button>',
                '<div class="zy-grid">',
                '  <div class="zy-item"><span class="zy-label">状态</span><span class="zy-value" id="zy-auto-study-state"></span></div>',
                '  <div class="zy-item"><span class="zy-label">剩余未学完</span><span class="zy-value" id="zy-auto-study-pending-count"></span></div>',
                '  <div class="zy-item"><span class="zy-label">当前课程</span><span class="zy-value" id="zy-auto-study-course"></span></div>',
                '  <div class="zy-item"><span class="zy-label">学习进度</span><span class="zy-value" id="zy-auto-study-progress"></span></div>',
                '  <div class="zy-item"><span class="zy-label">最近动作</span><span class="zy-value" id="zy-auto-study-action"></span></div>',
                '</div>'
            ].join('');
            document.body.appendChild(panel);

            panelElements = {
                panel: panel,
                collapse: panel.querySelector('#zy-auto-study-collapse'),
                toggle: panel.querySelector('#zy-auto-study-toggle'),
                state: panel.querySelector('#zy-auto-study-state'),
                pendingCount: panel.querySelector('#zy-auto-study-pending-count'),
                course: panel.querySelector('#zy-auto-study-course'),
                progress: panel.querySelector('#zy-auto-study-progress'),
                action: panel.querySelector('#zy-auto-study-action')
            };

            panelElements.toggle.addEventListener('click', function () {
                const nextEnabled = !isAutomationEnabled();
                setAutomationEnabled(nextEnabled);
                if (nextEnabled) {
                    setLastAction('已手动开始自动学习');
                    ensurePlayback();
                } else {
                    setLastAction('已手动暂停自动学习');
                    pausePlayback();
                }
                updatePanel();
            });

            panelElements.collapse.addEventListener('click', function () {
                setPanelCollapsed(!isPanelCollapsed());
                updatePanel();
            });

            window.addEventListener('storage', function (event) {
                if (event.key === STORAGE_KEY_ENABLED || event.key === STORAGE_KEY_COLLAPSED) {
                    updatePanel();
                }
            });

            return panelElements;
        }

        function updatePanel() {
            const panel = createPanel();
            const enabled = isAutomationEnabled();
            const collapsed = isPanelCollapsed();
            const pendingCount = getPendingSections().length;
            const video = getCurrentVideo();
            const videoDuration = video && Number.isFinite(video.duration) ? video.duration : 0;
            const videoCurrentTime = video && Number.isFinite(video.currentTime) ? video.currentTime : 0;
            const duration = videoDuration > 0 ? formatSeconds(videoDuration) : (text('#durationStr') || '--');
            const learned = videoDuration > 0 ? formatSeconds(videoCurrentTime) : (text('#learnedStr') || '--');

            panel.panel.classList.toggle('is-collapsed', collapsed);
            panel.collapse.textContent = collapsed ? '展开' : '隐藏';
            panel.toggle.textContent = enabled ? '暂停自动学习' : '开始自动学习';
            panel.toggle.classList.toggle('is-paused', !enabled);
            panel.state.textContent = enabled ? '运行中' : '已暂停';
            panel.pendingCount.textContent = String(pendingCount);
            panel.course.textContent = getCurrentTitle();
            panel.progress.textContent = learned + ' / ' + duration;
            panel.action.textContent = lastAction;
        }

        function handleEndedBinding() {
            const video = getCurrentVideo();
            const courseId = getCurrentCourseId();
            if (!video || !courseId) {
                return;
            }
            if (video.dataset.autoStudyBound === courseId) {
                return;
            }
            video.dataset.autoStudyBound = courseId;
            video.addEventListener('ended', function () {
                endedCourseId = courseId;
                setLastAction('视频播放结束，准备提交完成');
            });
        }

        function handleIntervalModal() {
            const modal = document.querySelector('#show-time-interval');
            const openButton = document.querySelector('#interval-open');
            if (isVisible(modal) && openButton) {
                click(openButton);
                setLastAction('已自动点击继续打开');
                return true;
            }
            return false;
        }

        function closeProgressTipIfNeeded() {
            const modal = document.querySelector('#vue_dialog_sub_my');
            const closeButton = document.querySelector('#d_sub_confirm_my');
            const textNode = document.querySelector('#d_sub_txt_my');
            const message = textNode ? textNode.textContent.trim() : '';
            if (isVisible(modal) && closeButton && message.indexOf('本视频学习还剩约') !== -1) {
                endedCourseId = '';
                lastSubmitAt = Date.now();
                click(closeButton);
                setLastAction('关闭未学完提示，继续等待进度');
                return true;
            }
            return false;
        }

        function isCurrentDone() {
            const active = getActiveSection();
            const submitButton = document.querySelector('#btn_submit');
            const hiddenStatus = value('#hiddenStudyStatus');
            const buttonMarkedDone = Boolean(
                submitButton &&
                submitButton.disabled &&
                submitButton.classList.contains('btn-dark')
            );
            const menuMarkedDone = Boolean(active && active.querySelector('.status-done'));
            return hiddenStatus === '2' || buttonMarkedDone || menuMarkedDone;
        }

        function shouldSubmitCurrent() {
            if (isCurrentDone()) {
                return false;
            }
            const duration = parseTimeToSeconds(text('#durationStr'));
            const learned = parseTimeToSeconds(text('#learnedStr'));
            const courseId = getCurrentCourseId();
            const video = getCurrentVideo();
            const nearDone = duration > 0 && learned >= Math.max(duration - 1, 0);

            if (duration > 0 && learned >= duration) {
                return true;
            }
            if (video && video.ended && nearDone) {
                return true;
            }
            if (courseId && endedCourseId === courseId && nearDone) {
                return true;
            }
            return false;
        }

        function submitCurrent() {
            const button = document.querySelector('#btn_submit');
            if (!button || button.disabled) {
                return false;
            }
            click(button);
            lastSubmitAt = Date.now();
            setLastAction('已点击“我已学完”');
            return true;
        }

        function getFirstPendingSection() {
            const sections = getPendingSections();
            if (!sections.length) {
                return null;
            }
            return sections[0];
        }

        function goToFirstPending() {
            const section = getFirstPendingSection();
            if (!section) {
                setLastAction('全部课程已学完');
                return false;
            }

            const active = getActiveSection();
            if (active === section) {
                return true;
            }

            click(section);
            lastNextAt = Date.now();
            endedCourseId = '';
            setLastAction('已定位到第一个未学完课程');
            return true;
        }

        function ensureFirstPendingSelected() {
            const firstPending = getFirstPendingSection();
            if (!firstPending) {
                updatePanel();
                setLastAction('全部课程已学完');
                return true;
            }

            const active = getActiveSection();
            if (active !== firstPending) {
                goToFirstPending();
                return true;
            }

            return false;
        }

        function resetWhenCourseChanged() {
            const courseId = getCurrentCourseId();
            if (!courseId || courseId === lastCourseId) {
                return;
            }
            lastCourseId = courseId;
            endedCourseId = '';
            setLastAction('当前课程已切换');
        }

        function tick() {
            updatePanel();
            resetWhenCourseChanged();

            if (!isAutomationEnabled()) {
                pausePlayback();
                return;
            }

            if (ensureFirstPendingSelected()) {
                return;
            }

            if (handleIntervalModal()) {
                return;
            }

            closeProgressTipIfNeeded();
            ensurePlayback();
            handleEndedBinding();

            if (isCurrentDone()) {
                if (Date.now() - lastNextAt >= NEXT_DELAY_MS) {
                    goToFirstPending();
                }
                return;
            }

            if (shouldSubmitCurrent() && Date.now() - lastSubmitAt >= SUBMIT_COOLDOWN_MS) {
                submitCurrent();
            }
        }

        createPanel();
        setLastAction(isAutomationEnabled() ? '自动学习已启动' : '自动学习当前已暂停');
        tick();
        window.setInterval(tick, LOOP_MS);
    }

    if (isPlayerFrame) {
        frameVideoHelper();
        return;
    }

    if (isMainPage) {
        mainPageHelper();
    }
})();