feat(v4.1.0): 文本类别添加待办事务功能

- 可在文本数据详情中追加待办事务
- 支持事务内容、剩余天数（默认1天）、完成状态
- 历史事务按时间倒序排列，显示创建/更新时间
- 分页显示，每页10条

xian_favor/api.py

@@ -338,6 +338,105 @@ def reopen_item(item_id):
     return jsonify({'success': True, 'data': item})
 
 
+# ============ Todo Events 待办事务API ============
+
+@app.route('/api/items/<int:item_id>/todo-events', methods=['GET'])
+def list_todo_events(item_id):
+    """列出待办事务"""
+    limit = int(request.args.get('limit', 10))
+    offset = int(request.args.get('offset', 0))
+    
+    events = db.list_todo_events(item_id, limit=limit, offset=offset)
+    total = db.count_todo_events(item_id)
+    
+    return jsonify({'success': True, 'data': events, 'total': total})
+
+
+@app.route('/api/items/<int:item_id>/todo-events', methods=['POST'])
+def create_todo_event(item_id):
+    """创建待办事务"""
+    data = request.get_json()
+    
+    if not data or not data.get('content'):
+        return jsonify({'success': False, 'error': '缺少事务内容'}), 400
+    
+    # 检查item是否存在且是text类型
+    item = db.get_item(item_id)
+    if not item:
+        return jsonify({'success': False, 'error': '条目不存在'}), 404
+    
+    if item['type'] != 'text':
+        return jsonify({'success': False, 'error': '只有文本类型可添加待办事务'}), 400
+    
+    remaining_days = data.get('remaining_days', 1)
+    if remaining_days < 0:
+        remaining_days = 1
+    
+    event_id = db.create_todo_event(item_id, data['content'], remaining_days)
+    event = db.get_todo_event(event_id)
+    
+    return jsonify({'success': True, 'data': event}), 201
+
+
+@app.route('/api/todo-events/<int:event_id>', methods=['GET'])
+def get_todo_event(event_id):
+    """获取单个待办事务"""
+    event = db.get_todo_event(event_id)
+    if not event:
+        return jsonify({'success': False, 'error': '事务不存在'}), 404
+    
+    return jsonify({'success': True, 'data': event})
+
+
+@app.route('/api/todo-events/<int:event_id>', methods=['PUT'])
+def update_todo_event(event_id):
+    """更新待办事务"""
+    data = request.get_json()
+    
+    if not data:
+        return jsonify({'success': False, 'error': '无数据'}), 400
+    
+    event = db.get_todo_event(event_id)
+    if not event:
+        return jsonify({'success': False, 'error': '事务不存在'}), 404
+    
+    content = data.get('content')
+    remaining_days = data.get('remaining_days')
+    is_completed = data.get('is_completed')
+    
+    if is_completed is not None:
+        is_completed = bool(is_completed)
+    
+    db.update_todo_event(event_id, content=content, remaining_days=remaining_days, is_completed=is_completed)
+    event = db.get_todo_event(event_id)
+    
+    return jsonify({'success': True, 'data': event})
+
+
+@app.route('/api/todo-events/<int:event_id>', methods=['DELETE'])
+def delete_todo_event(event_id):
+    """删除待办事务"""
+    event = db.get_todo_event(event_id)
+    if not event:
+        return jsonify({'success': False, 'error': '事务不存在'}), 404
+    
+    db.delete_todo_event(event_id)
+    return jsonify({'success': True})
+
+
+@app.route('/api/todo-events/<int:event_id>/complete', methods=['POST'])
+def complete_todo_event(event_id):
+    """完成待办事务"""
+    event = db.get_todo_event(event_id)
+    if not event:
+        return jsonify({'success': False, 'error': '事务不存在'}), 404
+    
+    db.update_todo_event(event_id, is_completed=True)
+    event = db.get_todo_event(event_id)
+    
+    return jsonify({'success': True, 'data': event})
+
+
 @app.route('/api/items/<int:item_id>/convert', methods=['POST'])
 def convert_item(item_id):
     """将收藏转换为待办"""
@@ -1846,6 +1945,44 @@ INDEX_TEMPLATE = '''
     </div>
 </div>
 
+<!-- 待办事务模态框 -->
+<div class="modal fade" id="todoEventModal" tabindex="-1">
+    <div class="modal-dialog">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title"><i class="bi bi-list-check"></i> <span id="todoEventModalTitle">添加待办事务</span></h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
+            </div>
+            <div class="modal-body">
+                <input type="hidden" id="todoEventId">
+                <input type="hidden" id="todoEventItemId">
+                <div class="mb-3">
+                    <label class="form-label">事务内容</label>
+                    <textarea id="todoEventContent" class="form-control" rows="3" placeholder="输入事务内容..."></textarea>
+                </div>
+                <div class="mb-3">
+                    <label class="form-label">剩余天数</label>
+                    <input type="number" id="todoEventDays" class="form-control" value="1" min="0">
+                    <small class="text-muted">0表示已过期</small>
+                </div>
+                <div class="mb-3">
+                    <label class="form-label">完成状态</label>
+                    <select id="todoEventCompleted" class="form-select">
+                        <option value="0">未完成</option>
+                        <option value="1">已完成</option>
+                    </select>
+                </div>
+            </div>
+            <div class="modal-footer">
+                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">取消</button>
+                <button type="button" class="btn btn-primary" onclick="saveTodoEvent()">
+                    <i class="bi bi-check"></i> 保存
+                </button>
+            </div>
+        </div>
+    </div>
+</div>
+
 <!-- 移动到文件夹模态框 -->
 <div class="modal fade" id="moveToFolderModal" tabindex="-1">
     <div class="modal-dialog">
@@ -2709,7 +2846,7 @@ async function deleteItem(id) {
 let currentDetailId = null;
 
 // 显示详情
-async function showDetail(id) {
+async function showDetail(id, todoPage = 1) {
     currentDetailId = id;
     
     // 增加阅读数
@@ -2775,6 +2912,76 @@ async function showDetail(id) {
         }
     }
     
+    // 文本类型显示待办事务
+    if (item.type === 'text') {
+        const todoOffset = (todoPage - 1) * 10;
+        const todoRes = await fetch(`${API_BASE}/items/${id}/todo-events?limit=10&offset=${todoOffset}`);
+        const todoData = await todoRes.json();
+        
+        html += `<hr><div class="mb-3">
+            <div class="d-flex justify-content-between align-items-center">
+                <strong><i class="bi bi-list-check"></i> 待办事务</strong>
+                <button class="btn btn-sm btn-outline-primary" onclick="showAddTodoEventModal(${item.id})">
+                    <i class="bi bi-plus"></i> 添加事务
+                </button>
+            </div>
+        </div>`;
+        
+        if (todoData.success && todoData.data.length > 0) {
+            html += `<div class="border rounded p-2 bg-light" id="todoEventsList">`;
+            todoData.data.forEach(event => {
+                const completedClass = event.is_completed ? 'text-muted' : '';
+                const checkIcon = event.is_completed ? '✅' : '⏳';
+                const remainingText = event.remaining_days > 0 ? `${event.remaining_days}天` : '已过期';
+                const remainingClass = event.remaining_days <= 0 ? 'text-danger' : 'text-info';
+                
+                html += `<div class="d-flex justify-content-between align-items-start py-2 border-bottom todo-event-item ${completedClass}">
+                    <div class="flex-grow-1">
+                        <div class="d-flex align-items-center gap-2">
+                            <span onclick="toggleTodoEventComplete(${event.id}, ${item.id})" style="cursor:pointer;" title="点击切换完成状态">${checkIcon}</span>
+                            <span class="${event.is_completed ? 'text-decoration-line-through' : ''}">${escapeHtml(event.content)}</span>
+                            <small class="${remainingClass}">(${remainingText})</small>
+                        </div>
+                        <div class="text-muted small mt-1">
+                            创建: ${formatShortDate(event.created_at)} | 更新: ${formatShortDate(event.updated_at)}
+                        </div>
+                    </div>
+                    <div class="btn-group btn-group-sm">
+                        <button class="btn btn-outline-secondary btn-sm" onclick="showEditTodoEventModal(${event.id}, ${item.id})" title="编辑">
+                            <i class="bi bi-pencil"></i>
+                        </button>
+                        <button class="btn btn-outline-danger btn-sm" onclick="deleteTodoEvent(${event.id}, ${item.id})" title="删除">
+                            <i class="bi bi-trash"></i>
+                        </button>
+                    </div>
+                </div>`;
+            });
+            html += `</div>`;
+            
+            // 分页
+            const totalTodo = todoData.total;
+            const totalPagesTodo = Math.ceil(totalTodo / 10);
+            if (totalPagesTodo > 1) {
+                html += `<div class="d-flex justify-content-center mt-2">
+                    <nav><ul class="pagination pagination-sm">`;
+                for (let p = 1; p <= Math.min(totalPagesTodo, 5); p++) {
+                    html += `<li class="page-item ${p === todoPage ? 'active' : ''}">
+                        <a class="page-link" href="#" onclick="showDetail(${id}, ${p}); return false;">${p}</a>
+                    </li>`;
+                }
+                if (totalPagesTodo > 5) {
+                    html += `<li class="page-item disabled"><span class="page-link">...</span></li>`;
+                    html += `<li class="page-item"><a class="page-link" href="#" onclick="showDetail(${id}, ${totalPagesTodo}); return false;">${totalPagesTodo}</a></li>`;
+                }
+                html += `</ul></nav>
+                    <small class="text-muted ms-2">共 ${totalTodo} 条事务</small>
+                </div>`;
+            }
+        } else {
+            html += `<div class="text-center text-muted py-3">暂无待办事务</div>`;
+        }
+    }
+    
     if (item.tags.length) {
         html += `<div class="mb-3"><strong>标签:</strong> ${item.tags.map(t => `<span class="badge bg-secondary">${escapeHtml(t)}</span>`).join(' ')}</div>`;
     }
@@ -2816,6 +3023,126 @@ async function showDetail(id) {
     new bootstrap.Modal(document.getElementById('detailModal')).show();
 }
 
+// ============ 待办事务功能 ============
+
+// 显示添加待办事务模态框
+function showAddTodoEventModal(itemId) {
+    document.getElementById('todoEventId').value = '';
+    document.getElementById('todoEventItemId').value = itemId;
+    document.getElementById('todoEventContent').value = '';
+    document.getElementById('todoEventDays').value = 1;
+    document.getElementById('todoEventCompleted').value = 0;
+    document.getElementById('todoEventModalTitle').textContent = '添加待办事务';
+    
+    new bootstrap.Modal(document.getElementById('todoEventModal')).show();
+}
+
+// 显示编辑待办事务模态框
+async function showEditTodoEventModal(eventId, itemId) {
+    const res = await fetch(`${API_BASE}/todo-events/${eventId}`);
+    const data = await res.json();
+    
+    if (!data.success) {
+        alert('获取事务失败');
+        return;
+    }
+    
+    const event = data.data;
+    document.getElementById('todoEventId').value = eventId;
+    document.getElementById('todoEventItemId').value = itemId;
+    document.getElementById('todoEventContent').value = event.content;
+    document.getElementById('todoEventDays').value = event.remaining_days;
+    document.getElementById('todoEventCompleted').value = event.is_completed;
+    document.getElementById('todoEventModalTitle').textContent = '编辑待办事务';
+    
+    new bootstrap.Modal(document.getElementById('todoEventModal')).show();
+}
+
+// 保存待办事务
+async function saveTodoEvent() {
+    const eventId = document.getElementById('todoEventId').value;
+    const itemId = document.getElementById('todoEventItemId').value;
+    const content = document.getElementById('todoEventContent').value.trim();
+    const days = parseInt(document.getElementById('todoEventDays').value) || 1;
+    const completed = document.getElementById('todoEventCompleted').value === '1';
+    
+    if (!content) {
+        alert('请输入事务内容');
+        return;
+    }
+    
+    // 离线检查
+    if (!checkOnlineBeforeAction('保存待办事务')) return;
+    
+    if (eventId) {
+        // 更新
+        const res = await fetch(`${API_BASE}/todo-events/${eventId}`, {
+            method: 'PUT',
+            headers: { 'Content-Type': 'application/json' },
+            body: JSON.stringify({ content, remaining_days: days, is_completed: completed })
+        });
+        const data = await res.json();
+        
+        if (data.success) {
+            bootstrap.Modal.getInstance(document.getElementById('todoEventModal')).hide();
+            showDetail(itemId, 1);  // 刷新详情，回到第一页
+        } else {
+            alert('更新失败: ' + data.error);
+        }
+    } else {
+        // 创建
+        const res = await fetch(`${API_BASE}/items/${itemId}/todo-events`, {
+            method: 'POST',
+            headers: { 'Content-Type': 'application/json' },
+            body: JSON.stringify({ content, remaining_days: days })
+        });
+        const data = await res.json();
+        
+        if (data.success) {
+            bootstrap.Modal.getInstance(document.getElementById('todoEventModal')).hide();
+            showDetail(itemId, 1);  // 刷新详情，回到第一页
+        } else {
+            alert('创建失败: ' + data.error);
+        }
+    }
+}
+
+// 切换待办事务完成状态
+async function toggleTodoEventComplete(eventId, itemId) {
+    // 离线检查
+    if (!checkOnlineBeforeAction('切换完成状态')) return;
+    
+    const res = await fetch(`${API_BASE}/todo-events/${eventId}/complete`, {
+        method: 'POST'
+    });
+    const data = await res.json();
+    
+    if (data.success) {
+        showDetail(itemId, 1);  // 刷新详情
+    } else {
+        alert('操作失败: ' + data.error);
+    }
+}
+
+// 删除待办事务
+async function deleteTodoEvent(eventId, itemId) {
+    // 离线检查
+    if (!checkOnlineBeforeAction('删除待办事务')) return;
+    
+    if (!confirm('确认删除这条待办事务？')) return;
+    
+    const res = await fetch(`${API_BASE}/todo-events/${eventId}`, {
+        method: 'DELETE'
+    });
+    const data = await res.json();
+    
+    if (data.success) {
+        showDetail(itemId, 1);  // 刷新详情
+    } else {
+        alert('删除失败: ' + data.error);
+    }
+}
+
 // 从详情页打开转换
 function showConvertModalFromDetail() {
     bootstrap.Modal.getInstance(document.getElementById('detailModal')).hide();

xian_favor/db.py

@@ -187,6 +187,22 @@ class Database:
             cursor.execute("CREATE INDEX IF NOT EXISTS idx_folders_type ON folders(type)")
             cursor.execute("CREATE INDEX IF NOT EXISTS idx_folders_parent ON folders(parent_id)")
             
+            # 待办事务表（关联到文本类别的items）
+            cursor.execute("""
+                CREATE TABLE IF NOT EXISTS todo_events (
+                    id INTEGER PRIMARY KEY AUTOINCREMENT,
+                    item_id INTEGER NOT NULL,
+                    content TEXT NOT NULL,
+                    remaining_days INTEGER DEFAULT 1,
+                    is_completed INTEGER DEFAULT 0,
+                    created_at TEXT NOT NULL,
+                    updated_at TEXT NOT NULL,
+                    FOREIGN KEY (item_id) REFERENCES items(id) ON DELETE CASCADE
+                )
+            """)
+            cursor.execute("CREATE INDEX IF NOT EXISTS idx_todo_events_item ON todo_events(item_id)")
+            cursor.execute("CREATE INDEX IF NOT EXISTS idx_todo_events_created ON todo_events(created_at)")
+            
             conn.commit()
     
     # ============ Item 操作 ============
@@ -1166,6 +1182,93 @@ class Database:
                 # 删除
                 self.delete_backup(backup['name'])
 
+    # ============ Todo Events 待办事务操作 ============
+    
+    def create_todo_event(self, item_id: int, content: str, remaining_days: int = 1) -> int:
+        """创建待办事务"""
+        self._ensure_init()
+        now = datetime.now().isoformat()
+        
+        with self.get_conn() as conn:
+            cursor = conn.cursor()
+            cursor.execute("""
+                INSERT INTO todo_events (item_id, content, remaining_days, is_completed, created_at, updated_at)
+                VALUES (?, ?, ?, 0, ?, ?)
+            """, (item_id, content, remaining_days, now, now))
+            conn.commit()
+            return cursor.lastrowid
+    
+    def list_todo_events(self, item_id: int, limit: int = 10, offset: int = 0) -> List[Dict[str, Any]]:
+        """列出待办事务（按时间倒序）"""
+        self._ensure_init()
+        
+        with self.get_conn() as conn:
+            cursor = conn.cursor()
+            cursor.execute("""
+                SELECT * FROM todo_events 
+                WHERE item_id = ? 
+                ORDER BY created_at DESC 
+                LIMIT ? OFFSET ?
+            """, (item_id, limit, offset))
+            rows = cursor.fetchall()
+            return [dict(row) for row in rows]
+    
+    def count_todo_events(self, item_id: int) -> int:
+        """计算待办事务总数"""
+        self._ensure_init()
+        
+        with self.get_conn() as conn:
+            cursor = conn.cursor()
+            cursor.execute("SELECT COUNT(*) as count FROM todo_events WHERE item_id = ?", (item_id,))
+            return cursor.fetchone()['count']
+    
+    def get_todo_event(self, event_id: int) -> Optional[Dict[str, Any]]:
+        """获取单个待办事务"""
+        self._ensure_init()
+        
+        with self.get_conn() as conn:
+            cursor = conn.cursor()
+            cursor.execute("SELECT * FROM todo_events WHERE id = ?", (event_id,))
+            row = cursor.fetchone()
+            return dict(row) if row else None
+    
+    def update_todo_event(self, event_id: int, content: str = None, remaining_days: int = None, is_completed: bool = None) -> bool:
+        """更新待办事务"""
+        self._ensure_init()
+        now = datetime.now().isoformat()
+        
+        with self.get_conn() as conn:
+            cursor = conn.cursor()
+            
+            # 获取当前数据
+            cursor.execute("SELECT * FROM todo_events WHERE id = ?", (event_id,))
+            row = cursor.fetchone()
+            if not row:
+                return False
+            
+            # 更新字段
+            new_content = content if content is not None else row['content']
+            new_days = remaining_days if remaining_days is not None else row['remaining_days']
+            new_completed = 1 if is_completed is True else (0 if is_completed is False else row['is_completed'])
+            
+            cursor.execute("""
+                UPDATE todo_events 
+                SET content = ?, remaining_days = ?, is_completed = ?, updated_at = ?
+                WHERE id = ?
+            """, (new_content, new_days, new_completed, now, event_id))
+            conn.commit()
+            return True
+    
+    def delete_todo_event(self, event_id: int) -> bool:
+        """删除待办事务"""
+        self._ensure_init()
+        
+        with self.get_conn() as conn:
+            cursor = conn.cursor()
+            cursor.execute("DELETE FROM todo_events WHERE id = ?", (event_id,))
+            conn.commit()
+            return cursor.rowcount > 0
+
 
 # 全局数据库实例
 db = Database()