show main page by default.

.dockerignore

@@ -1,7 +1,13 @@
 .DS_Store
 
-node_modules/
+node_modules
-.git/
+.git
+.github
 
+Dockerfile
 .gitignore
+.dockerignore
+
 *.md
+
+data.db

.github/workflows/docker-buildx.yml

@@ -0,0 +1,52 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - 'v*'
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  buildx:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to DockerHub
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Extract metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            ${{ secrets.DOCKERHUB_USERNAME || 'username' }}/timeline-calendar
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

Dockerfile

@@ -1,12 +1,30 @@
-FROM node:25-alpine
+FROM node:lts-alpine
 
+# Use a non-root working directory
 WORKDIR /app
 
-COPY package*.json ./
+# Copy package files first to leverage Docker layer caching
-RUN npm install --production
+COPY package.json package-lock.json ./
 
+# Install production dependencies deterministically
+# --omit=dev keeps devDependencies out of the final install
+RUN npm ci --omit=dev --no-audit --no-fund
+
+# Copy the rest of the application
 COPY . .
 
+# Install tiny helper to drop privileges at container start
+# and keep image small (no cache)
+RUN apk add --no-cache su-exec
+
+# Runtime entrypoint ensures the data dir ownership and drops privileges
+COPY scripts/entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+ENV NODE_ENV=production
+ENV DB_PATH=/app/data/data.db
+
 EXPOSE 3000
 
+ENTRYPOINT ["/entrypoint.sh"]
 CMD ["node", "server.js"]

README.md

@@ -26,6 +26,37 @@ npm start
 
 > 如需自定义端口，运行前设定 `PORT=xxxx` 即可。
 
+## 🚀 Docker Buildx 支持
+
+本项目现在支持使用 Docker Buildx 构建多平台镜像，并可推送至 Docker Hub。
+
+### 使用 GitHub Actions 自动构建和推送
+
+1. 在 GitHub 仓库中设置以下 secrets:
+   - `DOCKERHUB_USERNAME` - 你的 Docker Hub 用户名
+   - `DOCKERHUB_TOKEN` - 你的 Docker Hub 访问令牌
+
+2. 推送代码到 main 分支或创建版本标签，GitHub Actions 将自动构建并推送镜像。
+
+### 手动构建和推送
+
+```bash
+# 设置 buildx
+docker buildx create --name mybuilder --use
+docker buildx inspect --bootstrap
+
+# 构建并推送多平台镜像
+docker buildx build --platform linux/amd64,linux/arm64 -t registry.cn-beijing.aliyuncs.com/licsber/timeline:latest --push .
+```
+
+## 🗄️ 数据库持久化
+
+Docker 部署时，用户数据存储在 SQLite 数据库中，默认会持久化到项目根目录的 `data` 文件夹中。
+
+- 数据库文件路径：`./data/data.db`
+
+要备份数据，只需复制整个 `data` 目录。要恢复数据，将备份的 `data` 目录复制回项目根目录即可。
+
 ## 🧭 使用指南
 1. **添加服务器**：页面底部输入想连接的后端地址，点击「添加」，并从下拉框选择它
 2. **注册 / 登录**：按提示填写信息，完成后即可自动加载个人日历
@@ -67,11 +98,12 @@ timeline/
 ## ⚙️ 配置项
 - `PORT`：后端监听端口，默认 `3000`
 - `JWT_SECRET`：JWT 密钥，默认简单字符串，生产环境务必更换
+- `DB_PATH`：SQLite 数据库文件路径，默认 `/app/data/data.db`
 
 ## 💡 小贴士
 - 服务器列表保存在浏览器 LocalStorage，可随时增删
 - 支持多个浏览器/设备同时登录同一账号，数据实时同步
-- 若要重置数据，直接删除根目录下的 `data.db` 即可（注意备份）
+- 若要重置数据，直接删除根目录下的 `data` 目录即可（注意备份）
 
 ## 🧱 技术栈速览
 - **后端**：Node.js、Express 5、SQLite、JWT、bcryptjs

docker-compose.yml

@@ -1,12 +1,16 @@
 services:
   Timeline:
-    build: .
+    build:
+      context: .
+      dockerfile: Dockerfile
+    image: registry.cn-beijing.aliyuncs.com/licsber/timeline:latest
     ports:
       - "3000:3000"
     environment:
+      - NODE_ENV=production
       - PORT=3000
       - JWT_SECRET=${JWT_SECRET:-change-this-secret-key-in-production}
+      - DB_PATH=/app/data/data.db
     volumes:
-      - ./data.db:/app/data.db
+      - ./data:/app/data
-      - ./public:/app/public
     restart: unless-stopped

public/index.html

@@ -8,7 +8,7 @@
 </head>
 <body>
     <!-- 登录/注册模态框 -->
-    <div id="authModal" class="modal">
+    <div id="authModal" class="modal" style="display: none;">
         <div class="modal-content">
             <div class="modal-header">
                 <h2 id="authTitle">登录</h2>
@@ -43,7 +43,7 @@
     </div>
 
     <!-- 主应用容器 -->
-    <div class="container" id="mainContainer" style="display: none;">
+    <div class="container" id="mainContainer">
         <!-- 日历放在顶部 -->
         <div class="calendar" id="calendar"></div>
 

public/js/api.js

@@ -53,14 +53,22 @@ export async function fetchCurrentUser(server, token) {
   return request(server, '/api/auth/me', { token });
 }
 
-export async function fetchCalendar(server, token) {
+export async function fetchCalendar(server, token, year, month) {
-  return request(server, '/api/calendar', { token });
+  const params = new URLSearchParams();
+  if (year !== undefined && month !== undefined) {
+    params.append('year', year);
+    params.append('month', month);
+  }
+  const queryString = params.toString();
+  const path = queryString ? `/api/calendar?${queryString}` : '/api/calendar';
+  return request(server, path, { token });
 }
 
-export async function saveCalendar(server, token, markedDates) {
+
+export async function saveCalendar(server, token, markedDates, deletedDates) {
   return request(server, '/api/calendar', {
     method: 'POST',
     token,
-    body: { markedDates }
+    body: { markedDates, deletedDates }
   });
 }

public/js/auth.js

@@ -62,16 +62,19 @@ export default class AuthManager {
 
     if (this.closeModalBtn) {
       this.closeModalBtn.addEventListener('click', () => {
-        if (!state.token) {
+        // Allow closing modal even without login
-          showToast('请先登录后再关闭', 'error');
-          return;
-        }
         this.hideAuthModal();
       });
     }
 
     if (this.logoutBtn) {
-      this.logoutBtn.addEventListener('click', () => this.logout());
+      this.logoutBtn.addEventListener('click', () => {
+        if (state.user) {
+          this.logout();
+        } else {
+          this.showAuthModal(state.currentServer || window.location.origin);
+        }
+      });
     }
 
     if (this.authPassword) {
@@ -229,9 +232,7 @@ export default class AuthManager {
     if (this.authModal) {
       this.authModal.style.display = 'flex';
     }
-    if (this.mainContainer) {
+    // Don't hide main container anymore
-      this.mainContainer.style.display = 'none';
-    }
 
     const serverValue = prefillServer || state.currentServer || window.location.origin;
     if (this.authServer) {
@@ -266,6 +267,10 @@ export default class AuthManager {
     if (this.userDisplay) {
       this.userDisplay.textContent = state.user ? `用户: ${state.user.username}` : '未登录';
     }
+    // Update logout button text based on login state
+    if (this.logoutBtn) {
+      this.logoutBtn.textContent = state.user ? '退出' : '登录';
+    }
   }
 
   async handleServerSelection(server) {
@@ -275,9 +280,8 @@ export default class AuthManager {
       state.token = '';
       state.user = null;
       this.calendarView.clearData();
-      this.hideMainContainer();
-      this.showAuthModal();
       this.updateUserDisplay();
+      // Keep main container visible
       return;
     }
 
@@ -299,6 +303,8 @@ export default class AuthManager {
       state.user = null;
       this.calendarView.clearData();
       this.updateUserDisplay();
+      // Show main container and auth modal together
+      this.showMainContainer();
       this.showAuthModal(server);
     }
   }
@@ -312,7 +318,7 @@ export default class AuthManager {
     this.calendarView.clearData();
     this.updateUserDisplay();
     showToast('已退出登录', 'success');
-    this.hideMainContainer();
+    // Keep main container visible, just show auth modal
     this.showAuthModal(state.currentServer || window.location.origin);
   }
 
@@ -329,15 +335,18 @@ export default class AuthManager {
     const storedToken = storedServer ? getToken(storedServer) : '';
     const storedUser = storedServer ? getUser(storedServer) : null;
 
+    // Always show main container first
+    this.showMainContainer();
     if (storedServer && storedToken && storedUser) {
       state.token = storedToken;
       state.user = storedUser;
-      this.showMainContainer();
       this.updateUserDisplay();
+      // Try to load data, will show login if it fails
       this.calendarView.loadData();
     } else {
-      this.hideMainContainer();
+      // Render empty calendar
-      this.showAuthModal(storedServer || window.location.origin);
+      this.updateUserDisplay();
+      this.calendarView.renderCalendar();
     }
   }
 }

public/js/calendar.js

@@ -13,6 +13,7 @@ export default class CalendarView {
     this.monthNames = ['一月', '二月', '三月', '四月', '五月', '六月', '七月', '八月', '九月', '十月', '十一月', '十二月'];
     this.onUnauthorized = onUnauthorized;
     this.saveDelay = 500;
+    this.pendingTooltipDate = null; // Track date that needs tooltip after render
   }
 
   init() {
@@ -25,6 +26,8 @@ export default class CalendarView {
       this.prevBtn.addEventListener('click', () => {
         state.currentDate.setMonth(state.currentDate.getMonth() - 1);
         this.renderCalendar();
+        // Load data for the new month
+        this.loadData();
       });
     }
 
@@ -32,6 +35,8 @@ export default class CalendarView {
       this.nextBtn.addEventListener('click', () => {
         state.currentDate.setMonth(state.currentDate.getMonth() + 1);
         this.renderCalendar();
+        // Load data for the new month
+        this.loadData();
       });
     }
 
@@ -39,19 +44,27 @@ export default class CalendarView {
       this.todayBtn.addEventListener('click', () => {
         state.currentDate = new Date();
         this.renderCalendar();
+        // Load data for the current month
+        this.loadData();
       });
     }
   }
 
   async loadData() {
     if (!state.currentServer || !state.token) {
+      // No server or token, just render calendar without loading
+      this.renderCalendar();
       return;
     }
 
     try {
       showToast('正在加载...', 'info');
-      const result = await fetchCalendar(state.currentServer, state.token);
+      // Pass current year and month to only fetch data for the displayed month
-      state.markedDates = result.markedDates || {};
+      const year = state.currentDate.getFullYear();
+      const month = state.currentDate.getMonth() + 1; // getMonth() returns 0-11, need 1-12
+      const result = await fetchCalendar(state.currentServer, state.token, year, month);
+      // Merge with existing data
+      Object.assign(state.markedDates, result.markedDates || {});
       this.renderCalendar();
       showToast('数据加载成功', 'success');
     } catch (error) {
@@ -63,11 +76,14 @@ export default class CalendarView {
         return;
       }
       showToast(error.message || '加载失败', 'error');
+      // Still render the calendar even if loading fails
+      this.renderCalendar();
     }
   }
 
   clearData() {
     state.markedDates = {};
+    state.deletedDates = [];
     this.renderCalendar();
   }
 
@@ -149,7 +165,34 @@ export default class CalendarView {
       dayEl.appendChild(markEl);
     }
 
-    dayEl.addEventListener('click', () => {
+    // Add timestamp tooltip functionality
+    const timestamp = this.getDateTimestamp(date);
+    if (timestamp) {
+      // Store the ISO timestamp
+      dayEl.dataset.modificationTime = timestamp;
+
+      // Add hover events for custom tooltip
+      dayEl.addEventListener('mouseenter', (e) => {
+        const isoTime = e.currentTarget.dataset.modificationTime;
+        // Convert to user's local timezone
+        const localTime = new Date(isoTime).toLocaleString('zh-CN', {
+          year: 'numeric',
+          month: '2-digit',
+          day: '2-digit',
+          hour: '2-digit',
+          minute: '2-digit',
+          second: '2-digit',
+          hour12: false
+        });
+        this.showTooltip(e, `修改时间: ${localTime}`);
+      });
+
+      dayEl.addEventListener('mouseleave', () => {
+        this.hideTooltip();
+      });
+    }
+
+    dayEl.addEventListener('click', (e) => {
       if (!isOtherMonth) {
         this.toggleDateStatus(date);
       }
@@ -158,6 +201,106 @@ export default class CalendarView {
     return dayEl;
   }
 
+  // Tooltip methods
+  showTooltip(event, content) {
+    // Remove any existing tooltips completely
+    const existingTooltips = document.querySelectorAll('.tooltip');
+    existingTooltips.forEach(tip => {
+      if (tip.parentNode) {
+        tip.parentNode.removeChild(tip);
+      }
+    });
+
+    // Create new tooltip element with unique ID
+    const tooltip = document.createElement('div');
+    const uniqueId = 'tooltip-' + Date.now();
+    tooltip.id = uniqueId;
+    tooltip.className = 'tooltip';
+    tooltip.textContent = content;
+    document.body.appendChild(tooltip);
+
+    // Position tooltip relative to the target element
+    const rect = event.currentTarget.getBoundingClientRect();
+    tooltip.style.left = (rect.left + rect.width / 2) + 'px';
+    tooltip.style.top = (rect.top - 10) + 'px';
+    tooltip.style.transform = 'translate(-50%, -100%)';
+
+    // Show tooltip with a slight delay to ensure position is set
+    requestAnimationFrame(() => {
+      tooltip.classList.add('show');
+    });
+  }
+
+  hideTooltip() {
+    const tooltips = document.querySelectorAll('.tooltip');
+    tooltips.forEach(tooltip => {
+      tooltip.classList.remove('show');
+      // Remove tooltip element after transition
+      setTimeout(() => {
+        if (tooltip.parentNode) {
+          tooltip.parentNode.removeChild(tooltip);
+        }
+      }, 200);
+    });
+  }
+
+  refreshTooltip(event, element) {
+    // Check if element has timestamp data
+    const isoTime = element.dataset.modificationTime;
+    if (isoTime) {
+      // Convert to user's local timezone
+      const localTime = new Date(isoTime).toLocaleString('zh-CN', {
+        year: 'numeric',
+        month: '2-digit',
+        day: '2-digit',
+        hour: '2-digit',
+        minute: '2-digit',
+        second: '2-digit',
+        hour12: false
+      });
+      this.showTooltip(event, `修改时间: ${localTime}`);
+    } else {
+      // No timestamp, hide tooltip
+      this.hideTooltip();
+    }
+  }
+
+  showTooltipForDate(dateKey) {
+    // Find the day element for this date
+    const dayElements = this.calendarEl.querySelectorAll('.day:not(.other-month)');
+    for (const dayEl of dayElements) {
+      if (dayEl.dataset.modificationTime) {
+        // Extract date from the element's position
+        const dayNumber = dayEl.querySelector('.day-number')?.textContent;
+        if (dayNumber) {
+          const year = state.currentDate.getFullYear();
+          const month = state.currentDate.getMonth();
+          const testDate = new Date(year, month, parseInt(dayNumber));
+          if (this.formatDate(testDate) === dateKey) {
+            // Found the element, show tooltip
+            const isoTime = dayEl.dataset.modificationTime;
+            const localTime = new Date(isoTime).toLocaleString('zh-CN', {
+              year: 'numeric',
+              month: '2-digit',
+              day: '2-digit',
+              hour: '2-digit',
+              minute: '2-digit',
+              second: '2-digit',
+              hour12: false
+            });
+            // Create a synthetic event for positioning
+            const rect = dayEl.getBoundingClientRect();
+            const syntheticEvent = {
+              currentTarget: dayEl
+            };
+            this.showTooltip(syntheticEvent, `修改时间: ${localTime}`);
+            break;
+          }
+        }
+      }
+    }
+  }
+
   toggleDateStatus(date) {
     if (!state.currentServer || !state.token) {
       showToast('请先选择服务器并登录', 'error');
@@ -165,7 +308,8 @@ export default class CalendarView {
     }
 
     const dateKey = this.formatDate(date);
-    const currentStatus = state.markedDates[dateKey] || 'none';
+    const dateData = state.markedDates[dateKey];
+    const currentStatus = (dateData && dateData.status) || 'none';
     let nextStatus;
 
     switch (currentStatus) {
@@ -183,8 +327,23 @@ export default class CalendarView {
 
     if (nextStatus === 'none') {
       delete state.markedDates[dateKey];
+      // Track this deletion
+      if (!state.deletedDates.includes(dateKey)) {
+        state.deletedDates.push(dateKey);
+      }
+      // Clear pending tooltip for removed marks
+      this.pendingTooltipDate = null;
+      this.hideTooltip();
     } else {
-      state.markedDates[dateKey] = nextStatus;
+      // Store status, timestamp will be updated by server on save
+      state.markedDates[dateKey] = { status: nextStatus };
+      // Remove from deleted dates if it was there
+      const deleteIndex = state.deletedDates.indexOf(dateKey);
+      if (deleteIndex !== -1) {
+        state.deletedDates.splice(deleteIndex, 1);
+      }
+      // Store the date for tooltip after save completes
+      this.pendingTooltipDate = dateKey;
     }
 
     this.renderCalendar();
@@ -206,8 +365,25 @@ export default class CalendarView {
   async persistMarkedDates() {
     state.saveTimeoutId = null;
     try {
-      await saveCalendar(state.currentServer, state.token, state.markedDates);
+      // Convert state format { date: { status, updatedAt } } to API format { date: status }
+      const markedDatesForAPI = {};
+      for (const [date, data] of Object.entries(state.markedDates)) {
+        if (data && typeof data === 'object' && data.status) {
+          markedDatesForAPI[date] = data.status;
+        }
+      }
+
+      await saveCalendar(state.currentServer, state.token, markedDatesForAPI, state.deletedDates);
+      // Clear the deleted dates array after successful save
+      state.deletedDates = [];
       showToast('数据已保存', 'success');
+      // Reload data to get updated timestamps
+      await this.loadData();
+      // Show tooltip for the pending date after data is loaded
+      if (this.pendingTooltipDate) {
+        this.showTooltipForDate(this.pendingTooltipDate);
+        this.pendingTooltipDate = null;
+      }
     } catch (error) {
       if (error instanceof ApiError && (error.status === 401 || error.status === 403)) {
         showToast('认证已过期，请重新登录', 'error');
@@ -230,7 +406,20 @@ export default class CalendarView {
 
   getDateStatus(date) {
     const dateKey = this.formatDate(date);
-    return state.markedDates[dateKey] || 'none';
+    const dateData = state.markedDates[dateKey];
+    if (dateData && typeof dateData === 'object') {
+      return dateData.status || 'none';
+    }
+    return 'none';
+  }
+
+  getDateTimestamp(date) {
+    const dateKey = this.formatDate(date);
+    const dateData = state.markedDates[dateKey];
+    if (dateData && typeof dateData === 'object' && dateData.updatedAt) {
+      return dateData.updatedAt;
+    }
+    return null;
   }
 
   isToday(date) {

public/js/state.js

@@ -1,6 +1,7 @@
 const state = {
   currentDate: new Date(),
-  markedDates: {},
+  markedDates: {}, // Now stores objects with { status, updatedAt }
+  deletedDates: [], // Track dates that have been explicitly deleted
   currentServer: '',
   token: '',
   user: null,

public/style.css

@@ -575,6 +575,37 @@ header h1 {
     color: white;
 }
 
+/* Custom tooltip for modification time */
+.tooltip {
+    position: fixed;
+    background: #333;
+    color: white;
+    padding: 8px 12px;
+    border-radius: 6px;
+    font-size: 12px;
+    z-index: 10001;
+    white-space: nowrap;
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
+    pointer-events: none;
+    opacity: 0;
+    transition: opacity 0.2s ease;
+}
+
+.tooltip.show {
+    opacity: 1;
+}
+
+.tooltip::after {
+    content: '';
+    position: absolute;
+    top: 100%;
+    left: 50%;
+    margin-left: -6px;
+    border-width: 6px;
+    border-style: solid;
+    border-color: #333 transparent transparent transparent;
+}
+
 @media (max-width: 768px) {
     .container {
         padding: 20px;

scripts/entrypoint.sh

@@ -0,0 +1,15 @@
+#!/bin/sh
+set -e
+
+# Ensure the data directory exists and is writable by the 'node' user.
+# This runs as root inside the container during startup, fixes ownership for
+# both named volumes and bind mounts, then drops privileges to the 'node' user.
+
+DATA_DIR=/app/data
+
+mkdir -p "$DATA_DIR"
+chown -R node:node "$DATA_DIR" || true
+chmod 755 "$DATA_DIR" || true
+
+# Exec the requested command as the 'node' user
+exec su-exec node "$@"

server/config.js

@@ -2,7 +2,7 @@ const path = require('path');
 
 const PORT = process.env.PORT || 3000;
 const JWT_SECRET = process.env.JWT_SECRET || 'your-secret-key-change-in-production';
-const DB_PATH = path.join(__dirname, '..', 'data.db');
+const DB_PATH = process.env.DB_PATH || path.join(__dirname, '..', 'data', 'data.db');
 
 module.exports = {
   PORT,

server/database.js

@@ -1,9 +1,32 @@
 const sqlite3 = require('sqlite3').verbose();
 const { DB_PATH } = require('./config');
+const fs = require('fs');
+const path = require('path');
+
+// Ensure the directory exists with proper permissions
+const dbDir = path.dirname(DB_PATH);
+if (!fs.existsSync(dbDir)) {
+  try {
+    fs.mkdirSync(dbDir, { recursive: true });
+    console.log('Created database directory:', dbDir);
+  } catch (err) {
+    console.error('Failed to create database directory:', err.message);
+  }
+}
+
+// Try to create the database file if it doesn't exist
+try {
+  fs.closeSync(fs.openSync(DB_PATH, 'a'));
+  console.log('Database file is accessible:', DB_PATH);
+} catch (err) {
+  console.error('Failed to access database file:', err.message);
+}
 
 const db = new sqlite3.Database(DB_PATH, (err) => {
   if (err) {
     console.error('数据库连接失败:', err.message);
+    console.error('数据库路径:', DB_PATH);
+    console.error('当前工作目录:', process.cwd());
     process.exit(1);
   }
   console.log('已连接到 SQLite 数据库');

server/routes/calendar.js

@@ -5,71 +5,129 @@ const router = express.Router();
 
 router.get('/', (req, res) => {
   const userId = req.user.userId;
+  const { year, month } = req.query;
 
-  db.all(
+  // Build query based on whether year and month are provided
-    'SELECT date, status FROM calendar_marks WHERE user_id = ?',
+  let query = 'SELECT date, status, updated_at FROM calendar_marks WHERE user_id = ?';
-    [userId],
+  const params = [userId];
-    (err, rows) => {
+
+  // If year and month are provided, filter by that month plus adjacent months
+  if (year && month) {
+    const yearNum = parseInt(year, 10);
+    const monthNum = parseInt(month, 10);
+
+    // Validate year and month
+    if (isNaN(yearNum) || isNaN(monthNum) || monthNum < 1 || monthNum > 12) {
+      return res.status(400).json({ success: false, error: '无效的年份或月份' });
+    }
+
+    // Calculate the date range: previous month to next month
+    // This covers all dates that might be visible in the calendar view
+    const prevMonth = monthNum === 1 ? 12 : monthNum - 1;
+    const prevYear = monthNum === 1 ? yearNum - 1 : yearNum;
+    const nextMonth = monthNum === 12 ? 1 : monthNum + 1;
+    const nextYear = monthNum === 12 ? yearNum + 1 : yearNum;
+
+    const startDate = `${prevYear}-${String(prevMonth).padStart(2, '0')}-01`;
+    // Get the last day of next month
+    const lastDayOfNextMonth = new Date(nextYear, nextMonth, 0).getDate();
+    const endDate = `${nextYear}-${String(nextMonth).padStart(2, '0')}-${String(lastDayOfNextMonth).padStart(2, '0')}`;
+
+    query += ' AND date >= ? AND date <= ?';
+    params.push(startDate, endDate);
+  }
+
+  db.all(query, params, (err, rows) => {
     if (err) {
       return res.status(500).json({ success: false, error: '获取数据失败' });
     }
 
     const markedDates = {};
     rows.forEach((row) => {
-        markedDates[row.date] = row.status;
+      markedDates[row.date] = {
+        status: row.status,
+        updatedAt: row.updated_at
+      };
     });
 
     res.json({ success: true, markedDates });
-    }
+  });
-  );
 });
 
 router.post('/', (req, res) => {
   const userId = req.user.userId;
-  const { markedDates } = req.body || {};
+  const { markedDates, deletedDates } = req.body || {};
 
   if (!markedDates || typeof markedDates !== 'object') {
     return res.status(400).json({ success: false, error: '无效的数据格式' });
   }
 
-  const dbOperations = Object.entries(markedDates).map(([date, status]) => {
+  // Helper function to get current timestamp in ISO format (UTC)
-    return new Promise((resolve, reject) => {
+  const getLocalTimestamp = () => {
+    return new Date().toISOString();
+  };
+
+  const dbOperations = [];
+
+  // Update or insert marked dates
+  Object.entries(markedDates).forEach(([date, status]) => {
+    dbOperations.push(
+      new Promise((resolve, reject) => {
+        // First check if this date exists and if status has changed
+        db.get(
+          'SELECT status FROM calendar_marks WHERE user_id = ? AND date = ?',
+          [userId, date],
+          (err, row) => {
+            if (err) {
+              return reject(err);
+            }
+
+            // Only update timestamp if status changed or it's a new entry
+            const statusChanged = !row || row.status !== status;
+
+            if (statusChanged) {
+              // Status changed - update with new timestamp
+              const currentTimestamp = getLocalTimestamp();
               db.run(
                 `INSERT INTO calendar_marks (user_id, date, status, updated_at)
-         VALUES (?, ?, ?, CURRENT_TIMESTAMP)
+                 VALUES (?, ?, ?, ?)
                  ON CONFLICT(user_id, date) DO UPDATE SET
                  status = excluded.status,
-         updated_at = CURRENT_TIMESTAMP`,
+                 updated_at = excluded.updated_at`,
-        [userId, date, status],
+                [userId, date, status, currentTimestamp],
                 (err) => {
                   if (err) reject(err);
                   else resolve();
                 }
               );
-    });
+            } else {
-  });
+              // Status unchanged - keep existing timestamp
-
-  const dates = Object.keys(markedDates);
-  if (dates.length > 0) {
-    const placeholders = dates.map(() => '?').join(',');
-    dbOperations.push(
-      new Promise((resolve, reject) => {
               db.run(
-          `DELETE FROM calendar_marks WHERE user_id = ? AND date NOT IN (${placeholders})`,
+                `INSERT INTO calendar_marks (user_id, date, status, updated_at)
-          [userId, ...dates],
+                 VALUES (?, ?, ?, (SELECT updated_at FROM calendar_marks WHERE user_id = ? AND date = ?))
+                 ON CONFLICT(user_id, date) DO UPDATE SET
+                 status = excluded.status`,
+                [userId, date, status, userId, date],
                 (err) => {
                   if (err) reject(err);
                   else resolve();
                 }
               );
+            }
+          }
+        );
       })
     );
-  } else {
+  });
+
+  // Delete explicitly removed dates
+  if (deletedDates && Array.isArray(deletedDates) && deletedDates.length > 0) {
+    const placeholders = deletedDates.map(() => '?').join(',');
     dbOperations.push(
       new Promise((resolve, reject) => {
         db.run(
-          'DELETE FROM calendar_marks WHERE user_id = ?',
+          `DELETE FROM calendar_marks WHERE user_id = ? AND date IN (${placeholders})`,
-          [userId],
+          [userId, ...deletedDates],
           (err) => {
             if (err) reject(err);
             else resolve();