// ==UserScript==
// @name         Spotify链接及版权信息一键获取
// @namespace    http://tampermonkey.net/
// @version      21.3
// @description  在Spotify页面获取链接和版权，在自定义页面粘贴信息
// @author       Simon
// @match        https://open.spotify.com/*
// @match        https://beathamster.trialogger.com/*
// @match        https://beatdance.douyin.com/*
// @grant        GM_setClipboard
// @grant        GM_getValue
// @grant        GM_setValue
// @grant        GM_notification
// @grant        GM_addValueChangeListener
// @grant        GM_removeValueChangeListener
// ==/UserScript==

(function() {
    'use strict';

    const SPOTIFY_LOAD_DELAY = 5000;
    const CUSTOM_PAGE_DELAY = 2000;
    let storageListener = null;

    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', function() {
            setTimeout(initInterface, getDelayTime());
        });
    } else {
        setTimeout(initInterface, getDelayTime());
    }

    function getDelayTime() {
        const currentUrl = window.location.href;
        if (currentUrl.includes('open.spotify.com')) {
            return SPOTIFY_LOAD_DELAY;
        } else if (isTrialLoggerPage(currentUrl) || isDouyinPage(currentUrl)) {
            return CUSTOM_PAGE_DELAY;
        }
        return 2000;
    }

    function initInterface() {
        const currentUrl = window.location.href;
        const isSpotifyPage = currentUrl.includes('open.spotify.com');
        const isCustomPage = isTrialLoggerPage(currentUrl) || isDouyinPage(currentUrl);

        removeLoadingIndicator();

        if (storageListener) {
            GM_removeValueChangeListener(storageListener);
            storageListener = null;
        }

        if (isSpotifyPage) {
            if (isSpotifyReady()) {
                createSpotifyInterface();
                autoFillSpotifyInfo();
                setupStorageListener();
            } else {
                showLoadingIndicator('等待Spotify加载完成...');
                setTimeout(initInterface, 1000);
            }
        } else if (isCustomPage) {
            createCustomPageInterface();
            autoFillCustomInfo();
            setupStorageListener();
        }
    }

    function setupStorageListener() {
        storageListener = GM_addValueChangeListener('spotify_link', function(name, oldValue, newValue, remote) {
            if (remote) {
                updateCustomInfo();
            }
        });

        GM_addValueChangeListener('spotify_copyright', function(name, oldValue, newValue, remote) {
            if (remote) {
                updateCustomInfo();
            }
        });
    }

    function updateCustomInfo() {
        const isCustomPage = isTrialLoggerPage(window.location.href) || isDouyinPage(window.location.href);
        if (isCustomPage) {
            const savedLink = GM_getValue('spotify_link', '');
            const savedCopyright = GM_getValue('spotify_copyright', '');

            const linkInput = document.getElementById('pasteLink');
            const copyrightInput = document.getElementById('pasteCopyright');

            if (linkInput && linkInput.value !== savedLink) {
                linkInput.value = savedLink;
            }
            if (copyrightInput && copyrightInput.value !== savedCopyright) {
                copyrightInput.value = savedCopyright;
            }
        }
    }

    function autoFillSpotifyInfo() {
        const currentUrl = window.location.href;
        const linkInput = document.getElementById('getLink');
        if (linkInput) {
            linkInput.value = currentUrl;
            GM_setValue('spotify_link', currentUrl);
        }

        const copyrightText = extractCopyrightInfo();
        const copyrightInput = document.getElementById('getCopyright');
        if (copyrightInput) {
            copyrightInput.value = copyrightText;
            GM_setValue('spotify_copyright', copyrightText);
        }
    }

    function autoFillCustomInfo() {
        const savedLink = GM_getValue('spotify_link', '');
        const savedCopyright = GM_getValue('spotify_copyright', '');

        const linkInput = document.getElementById('pasteLink');
        const copyrightInput = document.getElementById('pasteCopyright');

        if (linkInput) linkInput.value = savedLink;
        if (copyrightInput) copyrightInput.value = savedCopyright;
    }

    function isSpotifyReady() {
        const copyrightElements = document.querySelectorAll(
            'p.e-91000-text.encore-text-body-small[data-encore-id="text"], ' +
            'p[data-encore-id="type"][dir="auto"], ' +
            '.Type__TypeElement-sc-goli3j-0.gBYjgG'
        );
        return copyrightElements.length > 0 || document.querySelector('footer');
    }

    function showLoadingIndicator(message) {
        removeLoadingIndicator();
        const loader = document.createElement('div');
        loader.id = 'spotify-manager-loader';
        loader.style.position = 'fixed';
        loader.style.top = '20px';
        loader.style.right = '20px';
        loader.style.zIndex = '10000';
        loader.style.padding = '10px 15px';
        loader.style.backgroundColor = '#1DB954';
        loader.style.color = 'white';
        loader.style.borderRadius = '5px';
        loader.style.fontSize = '12px';
        loader.style.boxShadow = '0 2px 10px rgba(0,0,0,0.3)';
        loader.textContent = message;
        document.body.appendChild(loader);
    }

    function removeLoadingIndicator() {
        const existingLoader = document.getElementById('spotify-manager-loader');
        if (existingLoader) existingLoader.remove();
    }

    function isTrialLoggerPage(url) {
        return /^https:\/\/([a-zA-Z0-9-]+\.)?trialogger\.com\/.*/.test(url);
    }

    function isDouyinPage(url) {
        return /^https:\/\/beatdance\.douyin\.com\/.*/.test(url);
    }

    function createSpotifyInterface() {
        const container = createContainer('spotify');
        const title = document.createElement('h4');
        title.textContent = 'Spotify信息获取';
        title.style.margin = '0 0 10px 0';
        title.style.color = '#1DB954';
        container.appendChild(title);

        const linkDiv = createInfoDisplay('链接:', 'getLink', '当前复制的链接', 'spotify');
        container.appendChild(linkDiv);

        const copyrightDiv = createInfoDisplay('版权信息:', 'getCopyright', '当前复制的版权', 'spotify');
        container.appendChild(copyrightDiv);

        const refreshButton = document.createElement('button');
        refreshButton.textContent = '刷新信息（一键获取）';
        refreshButton.style.padding = '8px 12px';
        refreshButton.style.backgroundColor = '#1DB954';
        refreshButton.style.color = 'white';
        refreshButton.style.border = 'none';
        refreshButton.style.borderRadius = '4px';
        refreshButton.style.cursor = 'pointer';
        refreshButton.style.fontSize = '12px';
        refreshButton.style.marginTop = '10px';
        refreshButton.style.width = '100%';
        refreshButton.addEventListener('click', function() {
            autoFillSpotifyInfo();
            showNotification('信息已刷新！');
        });
        container.appendChild(refreshButton);

        document.body.appendChild(container);
        setupSpotifyButtonEvents();
    }

    function createCustomPageInterface() {
        const container = createContainer('custom');
        const title = document.createElement('h4');
        if (window.location.href.includes('trialogger.com')) {
            title.textContent = '信息粘贴';
            title.style.color = '#FF6B35';
        } else if (window.location.href.includes('douyin.com')) {
            title.textContent = '信息粘贴';
            title.style.color = '#FE2C55';
        }
        title.style.margin = '0 0 10px 0';
        container.appendChild(title);

        const linkDiv = createInfoDisplay('链接:', 'pasteLink', '复制链接到剪切板', 'custom');
        container.appendChild(linkDiv);

        const copyrightDiv = createInfoDisplay('版权信息:', 'pasteCopyright', '复制版权到剪切板', 'custom');
        container.appendChild(copyrightDiv);

        const refreshButton = document.createElement('button');
        refreshButton.textContent = '刷新信息';
        refreshButton.style.padding = '8px 12px';
        refreshButton.style.backgroundColor = window.location.href.includes('trialogger.com') ? '#FF6B35' : '#FE2C55';
        refreshButton.style.color = 'white';
        refreshButton.style.border = 'none';
        refreshButton.style.borderRadius = '4px';
        refreshButton.style.cursor = 'pointer';
        refreshButton.style.fontSize = '12px';
        refreshButton.style.marginTop = '10px';
        refreshButton.style.width = '100%';
        refreshButton.addEventListener('click', function() {
            autoFillCustomInfo();
            showNotification('信息已刷新！');
        });
        container.appendChild(refreshButton);

        document.body.appendChild(container);
        setupCustomButtonEvents();
    }

    function createInfoDisplay(labelText, inputId, buttonText, type) {
        const groupDiv = document.createElement('div');
        groupDiv.style.marginBottom = '12px';

        const label = document.createElement('label');
        label.textContent = labelText;
        label.style.display = 'block';
        label.style.marginBottom = '5px';
        label.style.fontWeight = 'bold';
        label.style.fontSize = '12px';
        groupDiv.appendChild(label);

        const inputButtonDiv = document.createElement('div');
        inputButtonDiv.style.display = 'flex';
        inputButtonDiv.style.gap = '5px';

        const input = document.createElement('input');
        input.type = 'text';
        input.id = inputId;
        input.style.flex = '1';
        input.style.padding = '8px';
        input.style.border = '1px solid ' + (type === 'spotify' ? '#1DB954' : '#ccc');
        input.style.borderRadius = '4px';
        input.style.fontSize = '12px';
        input.style.readOnly = true;
        input.style.backgroundColor = '#f5f5f5';
        input.style.cursor = 'default';
        inputButtonDiv.appendChild(input);

        const button = document.createElement('button');
        button.textContent = buttonText;
        button.style.padding = '8px 12px';

        if (type === 'spotify') {
            button.style.backgroundColor = '#1DB954';
        } else {
            button.style.backgroundColor = window.location.href.includes('trialogger.com') ? '#FF6B35' : '#FE2C55';
        }

        button.style.color = 'white';
        button.style.border = 'none';
        button.style.borderRadius = '4px';
        button.style.cursor = 'pointer';
        button.style.fontSize = '12px';
        button.style.whiteSpace = 'nowrap';
        button.dataset.targetId = inputId;
        inputButtonDiv.appendChild(button);

        groupDiv.appendChild(inputButtonDiv);
        return groupDiv;
    }

    function createContainer(type) {
        const container = document.createElement('div');
        container.id = 'spotify-manager-container';
        container.style.position = 'fixed';
        container.style.top = '20px';
        container.style.right = '20px';
        container.style.zIndex = '9999';
        container.style.padding = '15px';
        container.style.backgroundColor = '#f8f9fa';
        container.style.border = '2px solid #ddd';
        container.style.borderRadius = '10px';
        container.style.boxShadow = '0 4px 12px rgba(0,0,0,0.15)';
        container.style.minWidth = '300px';
        container.style.maxWidth = '350px';

        if (type === 'spotify') container.style.borderColor = '#1DB954';
        else container.style.borderColor = window.location.href.includes('trialogger.com') ? '#FF6B35' : '#FE2C55';

        return container;
    }

    function setupSpotifyButtonEvents() {
        const buttons = document.querySelectorAll('#spotify-manager-container button');

        buttons[0].addEventListener('click', function() {
            const targetId = this.dataset.targetId;
            const input = document.getElementById(targetId);
            if (input && input.value) {
                GM_setClipboard(input.value);
                showNotification('链接已复制到剪贴板！');
            }
        });

        buttons[1].addEventListener('click', function() {
            const targetId = this.dataset.targetId;
            const input = document.getElementById(targetId);
            if (input && input.value) {
                GM_setClipboard(input.value);
                showNotification('版权信息已复制到剪贴板！');
            }
        });
    }

    function setupCustomButtonEvents() {
        const buttons = document.querySelectorAll('#spotify-manager-container button');

        // 复制链接按钮
        buttons[0].addEventListener('click', function() {
            const targetId = this.dataset.targetId;
            const input = document.getElementById(targetId);
            if (input && input.value) {
                GM_setClipboard(input.value);
                showNotification('链接已复制到剪贴板，请手动粘贴！');
            }
        });

        // 复制版权信息按钮
        buttons[1].addEventListener('click', function() {
            const targetId = this.dataset.targetId;
            const input = document.getElementById(targetId);
            if (input && input.value) {
                GM_setClipboard(input.value);
                showNotification('版权信息已复制到剪贴板，请手动粘贴！');
            }
        });
    }

    function extractCopyrightInfo() {
        const selectors = [
            'p.e-91000-text.encore-text-body-small[data-encore-id="text"]',
            'p[data-encore-id="type"][dir="auto"]',
            '.Type__TypeElement-sc-goli3j-0.gBYjgG',
            '[data-encore-id="text"]',
            '[data-encore-id="type"]'
        ];

        const copyrightLines = [];

        for (const selector of selectors) {
            try {
                const elements = document.querySelectorAll(selector);
                for (const element of elements) {
                    const text = element.textContent.trim();
                    if (text &&
                        (text.includes('©') || text.includes('℗') || /20\d{2}/.test(text) || /年/.test(text)) &&
                        text.length < 100) {
                        if (!copyrightLines.includes(text)) {
                            copyrightLines.push(text);
                        }
                    }
                }
            } catch (e) {
                continue;
            }
        }

        if (copyrightLines.length > 0) {
            return copyrightLines.slice(0, 3).join('\n');
        }

        return "未找到版权信息";
    }

    function showNotification(message) {
        GM_notification({
            title: '操作成功',
            text: message,
            timeout: 2000,
            silent: true
        });
    }
})();