import TodoService from './todo/todo-service.js';
import TodoModal from './todo/todo-modal.js';
import TodoTree from './todo/todo-tree.js';
import TodoList from './todo/todo-list.js';

class TodoComponent extends HTMLElement {
    static {
        // 添加静态初始化标志
        this.isInitializing = false;
    }

    constructor() {
        super();
        this.attachShadow({ mode: 'open' });
        this.todos = [];
        this.selectedProject = null;
        this.selectedSubproject = null;
        this.expandedProjects = new Set();
        this.users = [];
        this.currentUser = null;
        this.editingTodo = null;
        this.isInitialized = false;
        this.showCompleted = true;
    }

    // 初始化组件
    async initialize() {
        if (TodoComponent.isInitializing) {
            return;
        }

        // 先清除所有数据
        this.clearData();
        
        TodoComponent.isInitializing = true;
        
        try {
            // 先获取当前用户信息
            await this.getCurrentUser();
            
            // 然后获取其他数据
            await Promise.all([
                this.fetchTodos(),
                this.fetchUsers()
            ]);
            
            this.isInitialized = true;
            this.render();
        } catch (error) {
            console.error('初始化组件时发生错误:', error);
            this.showError('初始化失败，请刷新页面重试');
        } finally {
            TodoComponent.isInitializing = false;
        }
    }

    async fetchTodos() {
        try {
            this.todos = await TodoService.fetchTodos();
        } catch (error) {
            console.error('获取待办事项时发生错误:', error);
            this.showError('获取待办事项失败，请稍后重试');
        }
    }

    async fetchUsers() {
        try {
            this.users = await TodoService.fetchUsers();
        } catch (error) {
            console.error('获取用户数据时发生错误:', error);
            this.showError('获取用户数据失败，请稍后重试');
        }
    }

    async getCurrentUser() {
        try {
            const response = await fetch('/api/check-auth', {
                credentials: 'include'  // 重要：允许跨域请求携带cookie
            });
            const result = await response.json();
            
            if (result.success) {
                this.currentUser = result.user;
            } else {
                console.log('未找到登录用户信息');
                this.currentUser = null;
            }
        } catch (error) {
            console.error('获取当前用户信息时发生错误:', error);
            this.showError('获取用户信息失败');
            this.currentUser = null;
        }
    }

    showError(message) {
        // 首先移除之前的错误消息
        const existingErrorMessage = this.shadowRoot.querySelector('.error-message');
        if (existingErrorMessage) {
            existingErrorMessage.remove();
        }

        // 创建错误消息元素
        const errorDiv = document.createElement('div');
        errorDiv.className = 'error-message';
        errorDiv.textContent = message;
        
        // 添加自动消失功能
        errorDiv.style.position = 'fixed';
        errorDiv.style.top = '20px';
        errorDiv.style.left = '50%';
        errorDiv.style.transform = 'translateX(-50%)';
        errorDiv.style.zIndex = '1000';
        errorDiv.style.padding = '10px';
        errorDiv.style.backgroundColor = '#f8d7da';
        errorDiv.style.color = '#721c24';
        errorDiv.style.borderRadius = '4px';
        errorDiv.style.boxShadow = '0 2px 5px rgba(0,0,0,0.2)';

        // 将错误消息添加到文档主体，而不是shadowRoot
        document.body.appendChild(errorDiv);

        // 3秒后自动消失
        setTimeout(() => {
            if (errorDiv.parentNode) {
                errorDiv.parentNode.removeChild(errorDiv);
            }
        }, 3000);
    }

    // 显示编辑执行人对话框
    showEditExecutorModal(todo) {
        // 权限检查
        const currentUserLevel = this.currentUser.level || 0;
        if (currentUserLevel <= 2 && todo.adduser !== this.currentUser.username) {
            this.showError('您没有权限编辑他人创建的待办事项');
            return;
        }
        if (currentUserLevel === 3 && todo.adduser === 'admin') {
            this.showError('您没有权限编辑管理员创建的待办事项');
            return;
        }

        this.editingTodo = todo;
        const { modal, style } = TodoModal.createModal('executor');
        
        // 获取当前用户等级
        const currentUserAccessLevel = this.currentUser.access_level || 0;
        
        // 填充用户下拉列表
        const executorSelect = modal.querySelector('#executor');
        
        // 筛选符合条件的用户
        const availableUsers = this.users.filter(user => 
            user && 
            user.access_level > 0 && 
            user.access_level <= currentUserAccessLevel
        );

        // 添加用户选项
        availableUsers.forEach(user => {
            const option = document.createElement('option');
            option.value = user.username;
            option.textContent = `${user.username} (${user.full_name})`;
            if (user.username === todo.exeuser) {
                option.selected = true;
            }
            executorSelect.appendChild(option);
        });

        // 添加保存按钮事件
        const saveButton = modal.querySelector('.save-button');
        saveButton.addEventListener('click', async () => {
            const executor = executorSelect.value;
            if (executor && this.editingTodo) {
                try {
                    await TodoService.updateTodo(this.editingTodo.id, {
                        ...this.editingTodo,
                        exeuser: executor
                    });

                    // 更新本地数据
                    this.editingTodo.exeuser = executor;
                    this.render();
                    modal.remove();
                    style.remove();
                } catch (error) {
                    console.error('更新执行人时发生错误:', error);
                    this.showError('更新执行人失败，请稍后重试');
                }
            }
        });

        document.body.appendChild(modal);
    }

    // 显示编辑计划时间对话框
    showEditScheduleModal(todo) {
        // 权限检查
        const currentUserLevel = this.currentUser.level || 0;
        if (currentUserLevel <= 2 && todo.adduser !== this.currentUser.username) {
            this.showError('您没有权限编辑他人创建的待办事项');
            return;
        }
        if (currentUserLevel === 3 && todo.adduser === 'admin') {
            this.showError('您没有权限编辑管理员创建的待办事项');
            return;
        }

        this.editingTodo = todo;
        const { modal, style } = TodoModal.createModal('schedule');
        
        // 设置日期时间选择器的初始值
        const scheduleInput = modal.querySelector('#schedule');
        const scheduleDate = new Date(todo.sche_time);
        const year = scheduleDate.getFullYear();
        const month = String(scheduleDate.getMonth() + 1).padStart(2, '0');
        const day = String(scheduleDate.getDate()).padStart(2, '0');
        const hours = String(scheduleDate.getHours()).padStart(2, '0');
        const minutes = String(scheduleDate.getMinutes()).padStart(2, '0');
        const seconds = String(scheduleDate.getSeconds()).padStart(2, '0');
        scheduleInput.value = `${year}-${month}-${day} ${hours}:${minutes}:${seconds}`;

        // 添加保存按钮事件
        const saveButton = modal.querySelector('.save-button');
        saveButton.addEventListener('click', async () => {
            const scheduleTime = scheduleInput.value;
            if (scheduleTime && this.editingTodo) {
                try {
                    await TodoService.updateTodo(this.editingTodo.id, {
                        ...this.editingTodo,
                        sche_time: scheduleTime
                    });

                    // 更新本地数据
                    this.editingTodo.sche_time = scheduleTime;
                    this.render();
                    modal.remove();
                    style.remove();
                } catch (error) {
                    console.error('更新计划时间时发生错误:', error);
                    this.showError('更新计划时间失败，请稍后重试');
                }
            }
        });

        document.body.appendChild(modal);
    }

    // 显示新增待办对话框
    showNewTodoModal() {
        const { modal, style } = TodoModal.createModal('new-todo');
        
        // 设置计划时间的默认值为当前本地时间
        const scheduleInput = modal.querySelector('#schedule');
        const now = new Date();
        const year = now.getFullYear();
        const month = String(now.getMonth() + 1).padStart(2, '0');
        const day = String(now.getDate()).padStart(2, '0');
        const hours = String(now.getHours()).padStart(2, '0');
        const minutes = String(now.getMinutes()).padStart(2, '0');
        const seconds = String(now.getSeconds()).padStart(2, '0');
        scheduleInput.value = `${year}-${month}-${day} ${hours}:${minutes}:${seconds}`;

        // 获取当前用户等级
        const currentUserLevel = this.currentUser.access_level || 0;
        
        // 填充用户下拉列表
        const executorSelect = modal.querySelector('#executor');
        
        // 筛选符合条件的用户
        const availableUsers = this.users.filter(user => 
            user && 
            user.access_level > 0 && 
            user.access_level <= currentUserLevel
        );

        // 添加用户选项
        availableUsers.forEach(user => {
            const option = document.createElement('option');
            option.value = user.username;
            option.textContent = `${user.username} (${user.full_name})`;
            executorSelect.appendChild(option);
        });

        // 获取所有项目和子项目
        const projectTree = TodoTree.buildProjectTree(this.todos);
        const projectInput = modal.querySelector('#project');
        const subprojectInput = modal.querySelector('#subproject');
        const projectOptions = modal.querySelector('#project-options');
        const subprojectOptions = modal.querySelector('#subproject-options');

        // 填充项目选项
        Object.keys(projectTree).forEach(project => {
            const option = document.createElement('div');
            option.className = 'select-option';
            option.textContent = project;
            option.addEventListener('click', () => {
                projectInput.value = project;
                projectOptions.style.display = 'none';
                // 更新子项目选项
                updateSubprojectOptions(project);
            });
            projectOptions.appendChild(option);
        });

        // 更新子项目选项的函数
        const updateSubprojectOptions = (selectedProject) => {
            subprojectOptions.innerHTML = '';
            const subprojects = projectTree[selectedProject]?.subprojects || {};
            Object.keys(subprojects).forEach(subproject => {
                const option = document.createElement('div');
                option.className = 'select-option';
                option.textContent = subproject;
                option.addEventListener('click', () => {
                    subprojectInput.value = subproject;
                    subprojectOptions.style.display = 'none';
                });
                subprojectOptions.appendChild(option);
            });
        };

        // 项目输入框事件处理
        projectInput.addEventListener('focus', () => {
            projectOptions.style.display = 'block';
            subprojectOptions.style.display = 'none';
        });

        projectInput.addEventListener('input', () => {
            const value = projectInput.value.toLowerCase();
            const options = projectOptions.querySelectorAll('.select-option');
            options.forEach(option => {
                const text = option.textContent.toLowerCase();
                option.style.display = text.includes(value) ? 'block' : 'none';
            });
            projectOptions.style.display = 'block';
        });

        // 子项目输入框事件处理
        subprojectInput.addEventListener('focus', () => {
            if (projectInput.value) {
                subprojectOptions.style.display = 'block';
                projectOptions.style.display = 'none';
            }
        });

        subprojectInput.addEventListener('input', () => {
            if (projectInput.value) {
                const value = subprojectInput.value.toLowerCase();
                const options = subprojectOptions.querySelectorAll('.select-option');
                options.forEach(option => {
                    const text = option.textContent.toLowerCase();
                    option.style.display = text.includes(value) ? 'block' : 'none';
                });
                subprojectOptions.style.display = 'block';
            }
        });

        // 点击外部关闭下拉列表
        document.addEventListener('click', (e) => {
            if (!e.target.closest('.custom-select')) {
                projectOptions.style.display = 'none';
                subprojectOptions.style.display = 'none';
            }
        });

        // 添加保存按钮事件
        const saveButton = modal.querySelector('.save-button');
        saveButton.addEventListener('click', async () => {
            const project = projectInput.value;
            const subproject = subprojectInput.value;
            const title = modal.querySelector('#title').value;
            const text = modal.querySelector('#text').value;
            const scheduleTime = modal.querySelector('#schedule').value;
            const executor = modal.querySelector('#executor').value;

            if (!project || !subproject || !scheduleTime || !executor || !title) {
                this.showError('请填写必填项');
                return;
            }

            try {
                await TodoService.createTodo({
                    project,
                    subproject,
                    title,
                    text,
                    sche_time: scheduleTime,
                    exeuser: executor,
                    adduser: this.currentUser.username,
                    completed: false,
                    status: 'pending'
                });

                // 重新加载待办列表并渲染
                await this.fetchTodos();
                this.render();
                modal.remove();
                style.remove();
            } catch (error) {
                console.error('创建待办时发生错误:', error);
                this.showError(error.message || '创建待办失败，请稍后重试');
            }
        });

        document.body.appendChild(modal);
    }

    // 过滤待办事项
    filterTodos() {
        if (!this.currentUser) {
            console.log('未获取到当前用户信息，无法进行筛选');
            return [];
        }

        // 首先根据用户等级进行筛选
        const userLevel = this.currentUser.level || 0;
        let filteredTodos = this.todos;
        
        // 等级4可以看到所有待办事项
        if (userLevel !== 4) {
            // 等级3不能看到创建人和执行人都是等级4的待办事项
            if (userLevel === 3) {
                filteredTodos = filteredTodos.filter(todo => {
                    const creator = this.users.find(u => u.username === todo.adduser);
                    const executor = this.users.find(u => u.username === todo.exeuser);
                    
                    // 如果找不到用户信息，默认显示
                    if (!creator || !executor) return true;
                    
                    // 只要创建人或执行人不是等级4，就显示
                    return !(creator.level === 4 && executor.level === 4);
                });
            } else {
                // 等级2或更低只能看到创建人或执行人是自己的待办事项
                filteredTodos = filteredTodos.filter(todo => {
                    return todo.adduser === this.currentUser.username || 
                           todo.exeuser === this.currentUser.username;
                });
            }
        }

        // 然后根据项目/子项目筛选
        if (this.selectedProject) {
            filteredTodos = filteredTodos.filter(todo => {
                const matchesProject = todo.project === this.selectedProject;
                if (!this.selectedSubproject) {
                    return matchesProject;
                }
                return matchesProject && todo.subproject === this.selectedSubproject;
            });
        }

        // 最后根据复选框状态筛选
        if (!this.showCompleted) {
            filteredTodos = filteredTodos.filter(todo => !todo.completed);
        }

        return filteredTodos;
    }

    render() {
        if (!this.isInitialized) {
            return;
        }

        // 清空现有内容
        this.shadowRoot.innerHTML = '';
        
        // 添加样式
        const style = document.createElement('style');
        style.textContent = `
            .container {
                display: flex;
                height: calc(100vh - 120px);
                font-family: Arial, sans-serif;
                margin: 10px;
                overflow: hidden;
            }
            .project-tree {
                width: 250px;
                background: #f8f9fa;
                border-right: 1px solid #e9ecef;
                padding: 15px;
                display: flex;
                flex-direction: column;
                position: relative;
                height: 100%;
                box-sizing: border-box;
            }
            .tree-content {
                flex: 1;
                overflow-y: auto;
                margin-bottom: 100px;
                padding-right: 5px;
            }
            .todo-container {
                flex: 1;
                padding: 20px;
                overflow-y: auto;
                height: 100%;
                box-sizing: border-box;
            }
            .bottom-controls {
                position: absolute;
                bottom: 0;
                left: 0;
                right: 0;
                padding: 15px;
                background: #f8f9fa;
                border-top: 1px solid #e9ecef;
                box-sizing: border-box;
            }
            .tree-content::-webkit-scrollbar,
            .todo-container::-webkit-scrollbar {
                width: 6px;
            }
            .tree-content::-webkit-scrollbar-track,
            .todo-container::-webkit-scrollbar-track {
                background: #f1f1f1;
                border-radius: 3px;
            }
            .tree-content::-webkit-scrollbar-thumb,
            .todo-container::-webkit-scrollbar-thumb {
                background: #888;
                border-radius: 3px;
            }
            .tree-content::-webkit-scrollbar-thumb:hover,
            .todo-container::-webkit-scrollbar-thumb:hover {
                background: #555;
            }
            .show-completed-container {
                margin-bottom: 10px;
                padding: 8px;
                display: flex;
                align-items: center;
                gap: 8px;
                background: #fff;
                border-radius: 4px;
                border: 1px solid #e9ecef;
            }
            .show-completed-container input[type="checkbox"] {
                cursor: pointer;
                width: 16px;
                height: 16px;
            }
            .show-completed-container label {
                cursor: pointer;
                user-select: none;
                color: #495057;
                font-size: 14px;
            }
            .show-completed-container:hover {
                background: #e9ecef;
            }
            .show-all-button {
                width: 100%;
                padding: 8px 16px;
                background-color: #007bff;
                color: white;
                border: none;
                border-radius: 4px;
                cursor: pointer;
                font-size: 14px;
                transition: background-color 0.2s;
            }
            .show-all-button:hover {
                background-color: #0056b3;
            }
            .show-all-button:active {
                background-color: #004085;
            }
            .project-node {
                margin-bottom: 10px;
            }
            .project-header {
                padding: 8px;
                background: #e9ecef;
                border-radius: 4px;
                cursor: pointer;
            }
            .project-header-content {
                display: flex;
                align-items: center;
                gap: 8px;
            }
            .project-header:hover {
                background: #dee2e6;
            }
            .expand-icon {
                font-size: 12px;
                transition: transform 0.2s;
                color: #495057;
            }
            .expand-icon.expanded {
                transform: rotate(90deg);
            }
            .subprojects-container {
                margin-left: 20px;
                margin-top: 5px;
            }
            .subproject-node {
                padding: 6px 8px;
                cursor: pointer;
                border-radius: 4px;
                display: flex;
                justify-content: space-between;
                align-items: center;
            }
            .subproject-node:hover {
                background: #e9ecef;
            }
            .todo-count {
                font-size: 0.9em;
                color: #6c757d;
            }
            .todo-item {
                background: #fff;
                border: 1px solid #e9ecef;
                border-radius: 8px;
                padding: 15px;
                margin-bottom: 15px;
                box-shadow: 0 2px 4px rgba(0,0,0,0.05);
            }
            .todo-header {
                display: flex;
                justify-content: space-between;
                align-items: center;
                margin-bottom: 12px;
                padding-bottom: 8px;
                border-bottom: 1px solid #e9ecef;
            }
            .todo-header h3 {
                margin: 0;
                color: #212529;
                font-size: 1.1em;
            }
            .todo-content {
                color: #495057;
            }
            .todo-info {
                margin-bottom: 8px;
                font-size: 0.9em;
                display: flex;
                align-items: center;
                flex-wrap: wrap;
                gap: 8px;
            }
            .todo-info .label {
                color: #6c757d;
            }
            .todo-info .value {
                color: #212529;
            }
            .todo-description {
                margin-top: 12px;
                padding-top: 12px;
                border-top: 1px solid #e9ecef;
                color: #495057;
                font-size: 0.95em;
            }
            .description-header {
                display: flex;
                justify-content: space-between;
                align-items: center;
                margin-bottom: 8px;
            }
            .description-actions {
                display: flex;
                gap: 4px;
            }
            .description-content {
                white-space: pre-wrap;
                line-height: 1.5;
                max-height: 100px;
                overflow: hidden;
                transition: max-height 0.3s ease-out;
                position: relative;
                text-indent: 0;
            }
            .description-content.expanded {
                max-height: 2000px;
            }
            .description-content:not(.expanded) {
                max-height: 1.5em;
                white-space: nowrap;
                overflow: hidden;
                text-overflow: ellipsis;
                text-indent: 0;
            }
            .description-content::after {
                content: '';
                position: absolute;
                bottom: 0;
                left: 0;
                right: 0;
                height: 40px;
                background: linear-gradient(transparent, white);
                pointer-events: none;
                opacity: 1;
                transition: opacity 0.3s ease-out;
            }
            .description-content.expanded::after {
                opacity: 0;
            }
            .toggle-button {
                background: none;
                border: none;
                cursor: pointer;
                padding: 4px;
                border-radius: 4px;
                transition: all 0.2s;
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .toggle-button:hover {
                background-color: rgba(121, 134, 231, 0.1);
            }
            .toggle-icon {
                transition: transform 0.3s ease;
                width: 16px;
                height: 16px;
                display: inline-block;
            }
            .toggle-button.expanded .toggle-icon {
                transform: rotate(180deg);
            }
            .status {
                display: inline-block;
                padding: 4px 8px;
                border-radius: 4px;
                font-size: 0.9em;
            }
            .status.completed {
                background: #d4edda;
                color: #155724;
            }
            .status.pending {
                background: #fff3cd;
                color: #856404;
            }
            .error-message {
                color: #721c24;
                padding: 10px;
                background: #f8d7da;
                border-radius: 4px;
                margin: 10px;
            }
            .selected {
                background: #cfe2ff !important;
            }
            .executor-link {
                color: #007bff;
                text-decoration: none;
                cursor: pointer;
            }
            .executor-link:hover {
                text-decoration: underline;
            }
            .schedule-link {
                color: #007bff;
                text-decoration: none;
                cursor: pointer;
            }
            .schedule-link:hover {
                text-decoration: underline;
            }
            .add-todo-button {
                margin-bottom: 15px;
                padding: 8px 16px;
                background-color: #7986E7;
                color: white;
                border: none;
                border-radius: 4px;
                cursor: pointer;
                font-size: 14px;
                transition: background-color 0.2s;
                width: 100%;
            }
            .add-todo-button:hover {
                background-color: #6875D6;
            }
            .add-todo-button:active {
                background-color: #5A67D8;
            }
            .todo-actions {
                display: flex;
                align-items: center;
                gap: 8px;
            }
            .edit-button, .delete-button, .complete-button {
                background: none;
                border: none;
                cursor: pointer;
                padding: 4px;
                border-radius: 4px;
                transition: all 0.2s;
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .action-icon {
                width: 16px;
                height: 16px;
                object-fit: contain;
            }
            .edit-button:hover {
                background-color: rgba(121, 134, 231, 0.1);
            }
            .delete-button:hover {
                background-color: rgba(220, 53, 69, 0.1);
            }
            .complete-button:hover {
                background-color: rgba(40, 167, 69, 0.1);
            }
        `;
        this.shadowRoot.appendChild(style);

        // 创建主容器
        const container = document.createElement('div');
        container.className = 'container';

        // 首先根据用户等级过滤待办事项
        const userLevel = this.currentUser.level || 0;
        let filteredTodos = this.todos;
        
        // 等级4可以看到所有待办事项
        if (userLevel !== 4) {
            // 等级3不能看到创建人和执行人都是等级4的待办事项
            if (userLevel === 3) {
                filteredTodos = filteredTodos.filter(todo => {
                    const creator = this.users.find(u => u.username === todo.adduser);
                    const executor = this.users.find(u => u.username === todo.exeuser);
                    
                    // 如果找不到用户信息，默认显示
                    if (!creator || !executor) return true;
                    
                    // 只要创建人或执行人不是等级4，就显示
                    return !(creator.level === 4 && executor.level === 4);
                });
            } else {
                // 等级2或更低只能看到创建人或执行人是自己的待办事项
                filteredTodos = filteredTodos.filter(todo => {
                    return todo.adduser === this.currentUser.username || 
                           todo.exeuser === this.currentUser.username;
                });
            }
        }

        // 构建并渲染项目树（使用过滤后的待办事项）
        const tree = TodoTree.buildProjectTree(filteredTodos);
        const treeContainer = TodoTree.renderProjectTree(tree, {
            expandedProjects: this.expandedProjects,
            selectedProject: this.selectedProject,
            selectedSubproject: this.selectedSubproject,
            showCompleted: this.showCompleted,
            onProjectSelect: (project) => {
                this.selectedProject = project;
                this.selectedSubproject = null;
                this.render();
            },
            onSubprojectSelect: (project, subproject) => {
                this.selectedProject = project;
                this.selectedSubproject = subproject;
                this.render();
            },
            onExpandToggle: (project) => {
                if (this.expandedProjects.has(project)) {
                    this.expandedProjects.delete(project);
                } else {
                    this.expandedProjects.add(project);
                }
                this.render();
            },
            onShowCompletedChange: (show) => {
                this.showCompleted = show;
                this.render();
            },
            onShowAll: () => {
                this.selectedProject = null;
                this.selectedSubproject = null;
                this.render();
            },
            onAddTodo: () => this.showNewTodoModal()
        });

        // 然后根据项目/子项目筛选
        if (this.selectedProject) {
            filteredTodos = filteredTodos.filter(todo => {
                const matchesProject = todo.project === this.selectedProject;
                if (!this.selectedSubproject) {
                    return matchesProject;
                }
                return matchesProject && todo.subproject === this.selectedSubproject;
            });
        }

        // 最后根据复选框状态筛选
        if (!this.showCompleted) {
            filteredTodos = filteredTodos.filter(todo => !todo.completed);
        }

        // 渲染过滤后的待办事项
        const todosContainer = TodoList.renderTodoList(filteredTodos, {
            onEditExecutor: (todo) => this.showEditExecutorModal(todo),
            onEditSchedule: (todo) => this.showEditScheduleModal(todo),
            onEditTitle: (todo) => {
                // 权限检查
                const currentUserLevel = this.currentUser.level || 0;
                if (currentUserLevel <= 2 && todo.adduser !== this.currentUser.username) {
                    this.showError('您没有权限编辑他人创建的待办事项');
                    return;
                }
                if (currentUserLevel === 3 && todo.adduser === 'admin') {
                    this.showError('您没有权限编辑管理员创建的待办事项');
                    return;
                }

                const { modal, style } = TodoModal.createModal('edit-title');
                const titleInput = modal.querySelector('#title');
                titleInput.value = todo.title;

                const saveButton = modal.querySelector('.save-button');
                saveButton.addEventListener('click', async () => {
                    const newTitle = titleInput.value;
                    if (!newTitle) {
                        this.showError('标题不能为空');
                        return;
                    }

                    try {
                        await TodoService.updateTodo(todo.id, {
                            ...todo,
                            title: newTitle
                        });

                        await this.fetchTodos();
                        this.render();
                        modal.remove();
                        style.remove();
                    } catch (error) {
                        console.error('更新标题时发生错误:', error);
                        this.showError('更新标题失败，请稍后重试');
                    }
                });

                document.body.appendChild(modal);
            },
            onEditDescription: (todo) => {
                // 权限检查
                const currentUserLevel = this.currentUser.level || 0;
                if (currentUserLevel <= 2 && todo.adduser !== this.currentUser.username) {
                    this.showError('您没有权限编辑他人创建的待办事项');
                    return;
                }
                if (currentUserLevel === 3 && todo.adduser === 'admin') {
                    this.showError('您没有权限编辑管理员创建的待办事项');
                    return;
                }

                const { modal, style } = TodoModal.createModal('edit-description');
                const textInput = modal.querySelector('#text');
                textInput.value = todo.text || '';

                const saveButton = modal.querySelector('.save-button');
                saveButton.addEventListener('click', async () => {
                    const newText = textInput.value;

                    try {
                        await TodoService.updateTodo(todo.id, {
                            ...todo,
                            text: newText
                        });

                        await this.fetchTodos();
                        this.render();
                        modal.remove();
                        style.remove();
                    } catch (error) {
                        console.error('更新描述时发生错误:', error);
                        this.showError('更新描述失败，请稍后重试');
                    }
                });

                document.body.appendChild(modal);
            },
            onDelete: async (todo) => {
                // 权限检查
                const currentUserLevel = this.currentUser.level || 0;
                if (currentUserLevel <= 2 && todo.adduser !== this.currentUser.username) {
                    this.showError('您没有权限删除他人创建的待办事项');
                    return;
                }
                if (currentUserLevel === 3 && todo.adduser === 'admin') {
                    this.showError('您没有权限删除管理员创建的待办事项');
                    return;
                }

                if (confirm('确定要删除这条待办事项吗？')) {
                    try {
                        await TodoService.deleteTodo(todo.id);
                        await this.fetchTodos();
                        this.render();
                    } catch (error) {
                        console.error('删除待办事项时发生错误:', error);
                        this.showError('删除待办事项失败，请稍后重试');
                    }
                }
            },
            onComplete: async (todo) => {
                const action = todo.completed ? '取消完成' : '标记完成';
                if (confirm(`确定要${action}这条待办事项吗？`)) {
                    try {
                        await TodoService.updateTodo(todo.id, {
                            ...todo,
                            completed: !todo.completed,
                            complete_time: !todo.completed ? new Date().toISOString() : null
                        });

                        await this.fetchTodos();
                        this.render();
                    } catch (error) {
                        console.error(`${action}待办事项时发生错误:`, error);
                        this.showError(`${action}待办事项失败，请稍后重试`);
                    }
                }
            },
            onToggleDescription: (descriptionContent, toggleButton) => {
                const isExpanded = descriptionContent.classList.contains('expanded');
                
                if (isExpanded) {
                    descriptionContent.classList.remove('expanded');
                    toggleButton.classList.remove('expanded');
                } else {
                    descriptionContent.classList.add('expanded');
                    toggleButton.classList.add('expanded');
                }
            }
        });

        container.appendChild(treeContainer);
        container.appendChild(todosContainer);
        this.shadowRoot.appendChild(container);
    }

    connectedCallback() {
        this.initialize();
    }

    // 清除所有数据
    clearData() {
        this.todos = [];
        this.selectedProject = null;
        this.selectedSubproject = null;
        this.expandedProjects = new Set();
        this.users = [];
        this.currentUser = null;
        this.editingTodo = null;
        this.isInitialized = false;
        this.showCompleted = true;
    }
}

customElements.define('todo-component', TodoComponent);