/**
 * WhoReadThis 插件专用脚本 - 独立文件避免冲突
 * 版本: 1.0.6
 */

(function() {
    'use strict';
    
    // 等待DOM加载完成
    function initWhoReadThis() {
        const containers = document.querySelectorAll('.whoreadthis-container');
        
        containers.forEach(container => {
            if (container.dataset.whoReadThisInitialized === 'true') {
                return;
            }
            
            container.dataset.whoReadThisInitialized = 'true';
            
            const header = container.querySelector('.whoreadthis-header');
            const itemsWrapper = container.querySelector('.whoreadthis-items-wrapper');
            const toggleBtn = container.querySelector('.whoreadthis-toggle-btn');
            
            // 设置头像大小
            const avatarSize = container.getAttribute('data-avatar-size');
            if (avatarSize && avatarSize !== '40') {
                const avatars = container.querySelectorAll('.whoreadthis-avatar');
                const avatarImgs = container.querySelectorAll('.whoreadthis-avatar img');
                
                avatars.forEach(avatar => {
                    avatar.style.width = avatarSize + 'px';
                    avatar.style.height = avatarSize + 'px';
                });
                
                avatarImgs.forEach(img => {
                    img.style.width = avatarSize + 'px';
                    img.style.height = avatarSize + 'px';
                });
            }
            
            if (!header || !itemsWrapper || !toggleBtn) {
                return;
            }
            
            // 绑定标题点击事件
            header.addEventListener('click', function(e) {
                if (e.target.closest('.whoreadthis-toggle-btn')) {
                    return;
                }
                toggleWhoReadThis(container);
            });
            
            // 绑定按钮点击事件
            toggleBtn.addEventListener('click', function(e) {
                e.stopPropagation();
                toggleWhoReadThis(container);
            });
            
            // 处理头像链接点击
            const avatarWrappers = container.querySelectorAll('.whoreadthis-avatar-wrapper');
            avatarWrappers.forEach(wrapper => {
                const link = wrapper.getAttribute('href');
                if (link && link !== '#') {
                    wrapper.addEventListener('click', function(e) {
                        e.stopPropagation();
                        window.open(link, '_blank');
                    });
                }
            });
            
            // 锚点跳转支持
            if (window.location.hash === '#whoreadthis' || window.location.hash === '#whoreadthis-' + container.id.split('-')[1]) {
                setTimeout(function() {
                    container.scrollIntoView({ behavior: 'smooth' });
                    expandWhoReadThis(container);
                }, 300);
            }
        });
    }
    
    function toggleWhoReadThis(container) {
        const itemsWrapper = container.querySelector('.whoreadthis-items-wrapper');
        const toggleBtn = container.querySelector('.whoreadthis-toggle-btn');
        
        if (!itemsWrapper || !toggleBtn) {
            return;
        }
        
        if (itemsWrapper.classList.contains('collapsed')) {
            expandWhoReadThis(container);
        } else {
            collapseWhoReadThis(container);
        }
    }
    
    function expandWhoReadThis(container) {
        const itemsWrapper = container.querySelector('.whoreadthis-items-wrapper');
        const toggleBtn = container.querySelector('.whoreadthis-toggle-btn');
        
        if (itemsWrapper && toggleBtn) {
            itemsWrapper.className = 'whoreadthis-items-wrapper expanded';
            toggleBtn.className = 'whoreadthis-toggle-btn expanded';
            toggleBtn.querySelector('.toggle-arrow').textContent = '↑';
        }
    }
    
    function collapseWhoReadThis(container) {
        const itemsWrapper = container.querySelector('.whoreadthis-items-wrapper');
        const toggleBtn = container.querySelector('.whoreadthis-toggle-btn');
        
        if (itemsWrapper && toggleBtn) {
            itemsWrapper.className = 'whoreadthis-items-wrapper collapsed';
            toggleBtn.className = 'whoreadthis-toggle-btn collapsed';
            toggleBtn.querySelector('.toggle-arrow').textContent = '↓';
        }
    }
    
    // 页面加载完成后初始化
    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', function() {
            setTimeout(initWhoReadThis, 100);
        });
    } else {
        setTimeout(initWhoReadThis, 100);
    }
    
    // 暴露公共API
    window.WhoReadThis = {
        init: initWhoReadThis,
        expand: function(containerId) {
            const container = document.getElementById(containerId);
            if (container) {
                expandWhoReadThis(container);
            }
        },
        collapse: function(containerId) {
            const container = document.getElementById(containerId);
            if (container) {
                collapseWhoReadThis(container);
            }
        },
        toggle: function(containerId) {
            const container = document.getElementById(containerId);
            if (container) {
                toggleWhoReadThis(container);
            }
        }
    };
    
})();