添加docker compose部署脚本

config.example.yaml

@@ -19,7 +19,7 @@ api:
 
 cron:
   enabled: true
-  daily_spec: "0 10 * * *"
+  daily_spec: "20 8-23/4 * * *"
 
 retention:
   days: 0

internal/bootstrap/bootstrap.go

@@ -36,6 +36,20 @@ func Init(webFS embed.FS, configPath string) *gin.Engine {
 	// 2. 初始化日志
 	util.InitLogger(cfg.Log)
 
+	// 以 debug 级别输出配置加载详情和环境变量覆盖情况
+	util.Logger.Debug("Configuration loading details",
+		zap.String("config_file", config.GetRawViper().ConfigFileUsed()),
+	)
+	envOverrides := config.GetEnvOverrides()
+	if len(envOverrides) > 0 {
+		for _, override := range envOverrides {
+			util.Logger.Debug("Environment variable override applied", zap.String("detail", override))
+		}
+	} else {
+		util.Logger.Debug("No environment variable overrides detected")
+	}
+	util.Logger.Debug("Full effective configuration:\n" + config.GetFormattedSettings())
+
 	// 输出配置信息
 	util.Logger.Info("Application configuration loaded")
 	util.Logger.Info("├─ Config file", zap.String("path", config.GetRawViper().ConfigFileUsed()))

internal/config/config.go

@@ -3,6 +3,7 @@ package config
 import (
 	"fmt"
 	"os"
+	"sort"
 	"strings"
 	"sync"
 	"time"
@@ -156,7 +157,7 @@ func Init(configPath string) error {
 	v.SetDefault("log.db_log_level", "info")
 	v.SetDefault("api.mode", "local")
 	v.SetDefault("cron.enabled", true)
-	v.SetDefault("cron.daily_spec", "0 10 * * *")
+	v.SetDefault("cron.daily_spec", "20 8-23/4 * * *")
 	v.SetDefault("retention.days", 0)
 	v.SetDefault("db.type", "sqlite")
 	v.SetDefault("db.dsn", "data/bing_paper.db")
@@ -254,6 +255,38 @@ func GetRawViper() *viper.Viper {
 	return v
 }
 
+// GetAllSettings 返回所有生效配置项
+func GetAllSettings() map[string]interface{} {
+	return v.AllSettings()
+}
+
+// GetFormattedSettings 以 key: value 形式返回所有配置项的字符串
+func GetFormattedSettings() string {
+	keys := v.AllKeys()
+	sort.Strings(keys)
+	var sb strings.Builder
+	for _, k := range keys {
+		sb.WriteString(fmt.Sprintf("%s: %v\n", k, v.Get(k)))
+	}
+	return sb.String()
+}
+
+// GetEnvOverrides 返回环境变量覆盖详情（已排序）
+func GetEnvOverrides() []string {
+	var overrides []string
+	keys := v.AllKeys()
+	sort.Strings(keys)
+	for _, key := range keys {
+		// 根据 viper 的配置生成对应的环境变量名
+		// Prefix: BINGPAPER, KeyReplacer: . -> _
+		envKey := strings.ToUpper(fmt.Sprintf("BINGPAPER_%s", strings.ReplaceAll(key, ".", "_")))
+		if val, ok := os.LookupEnv(envKey); ok {
+			overrides = append(overrides, fmt.Sprintf("%s: %s=%s", key, envKey, val))
+		}
+	}
+	return overrides
+}
+
 func GetTokenTTL() time.Duration {
 	ttl, err := time.ParseDuration(GetConfig().Token.DefaultTTL)
 	if err != nil {

internal/config/config_test.go

@@ -1,6 +1,9 @@
 package config
 
 import (
+	"fmt"
+	"os"
+	"strings"
 	"testing"
 )
 
@@ -19,3 +22,46 @@ func TestDefaultConfig(t *testing.T) {
 		t.Errorf("Expected DB type sqlite, got %s", cfg.DB.Type)
 	}
 }
+
+func TestDebugFunctions(t *testing.T) {
+	// 设置一个环境变量
+	os.Setenv("BINGPAPER_SERVER_PORT", "9999")
+	defer os.Unsetenv("BINGPAPER_SERVER_PORT")
+
+	err := Init("")
+	if err != nil {
+		t.Fatalf("Failed to init config: %v", err)
+	}
+
+	settings := GetAllSettings()
+	serverCfg, ok := settings["server"].(map[string]interface{})
+	if !ok {
+		t.Fatalf("Expected server config map, got %v", settings["server"])
+	}
+
+	// Viper numbers in AllSettings are often int
+	portValue := serverCfg["port"]
+	// 允许不同的数字类型，因为 viper 内部实现可能变化
+	portStr := fmt.Sprintf("%v", portValue)
+	if portStr != "9999" {
+		t.Errorf("Expected port 9999 in settings, got %v (%T)", portValue, portValue)
+	}
+
+	overrides := GetEnvOverrides()
+	found := false
+	for _, o := range overrides {
+		if strings.Contains(o, "server.port") && strings.Contains(o, "9999") {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Errorf("Expected server.port override in %v", overrides)
+	}
+
+	// 验证格式化输出
+	formatted := GetFormattedSettings()
+	if !strings.Contains(formatted, "server.port: 9999") {
+		t.Errorf("Expected formatted settings to contain server.port: 9999, got %s", formatted)
+	}
+}

internal/http/handlers/image.go

@@ -52,7 +52,7 @@ func GetToday(c *gin.Context) {
 		c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
 		return
 	}
-	handleImageResponse(c, img)
+	handleImageResponse(c, img, 7200) // 2小时
 }
 
 // GetTodayMeta 获取今日图片元数据
@@ -68,6 +68,7 @@ func GetTodayMeta(c *gin.Context) {
 		c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
 		return
 	}
+	c.Header("Cache-Control", "public, max-age=7200") // 2小时
 	c.JSON(http.StatusOK, formatMeta(img))
 }
 
@@ -86,7 +87,7 @@ func GetRandom(c *gin.Context) {
 		c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
 		return
 	}
-	handleImageResponse(c, img)
+	handleImageResponse(c, img, 0) // 禁用缓存
 }
 
 // GetRandomMeta 获取随机图片元数据
@@ -102,6 +103,7 @@ func GetRandomMeta(c *gin.Context) {
 		c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
 		return
 	}
+	c.Header("Cache-Control", "no-cache, no-store, must-revalidate")
 	c.JSON(http.StatusOK, formatMeta(img))
 }
 
@@ -122,7 +124,7 @@ func GetByDate(c *gin.Context) {
 		c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
 		return
 	}
-	handleImageResponse(c, img)
+	handleImageResponse(c, img, 604800) // 7天
 }
 
 // GetByDateMeta 获取指定日期图片元数据
@@ -140,6 +142,7 @@ func GetByDateMeta(c *gin.Context) {
 		c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
 		return
 	}
+	c.Header("Cache-Control", "public, max-age=604800") // 7天
 	c.JSON(http.StatusOK, formatMeta(img))
 }
 
@@ -203,7 +206,7 @@ func ListImages(c *gin.Context) {
 	c.JSON(http.StatusOK, result)
 }
 
-func handleImageResponse(c *gin.Context, img *model.Image) {
+func handleImageResponse(c *gin.Context, img *model.Image, maxAge int) {
 	variant := c.DefaultQuery("variant", "UHD")
 	format := c.DefaultQuery("format", "jpg")
 
@@ -228,22 +231,30 @@ func handleImageResponse(c *gin.Context, img *model.Image) {
 	mode := config.GetConfig().API.Mode
 	if mode == "redirect" {
 		if selected.PublicURL != "" {
-			c.Header("Cache-Control", "public, max-age=604800") // 7天
+			if maxAge > 0 {
+				c.Header("Cache-Control", fmt.Sprintf("public, max-age=%d", maxAge))
+			} else {
+				c.Header("Cache-Control", "no-cache, no-store, must-revalidate")
+			}
 			c.Redirect(http.StatusFound, selected.PublicURL)
 		} else if img.URLBase != "" {
 			// 兜底重定向到原始 Bing
 			bingURL := fmt.Sprintf("https://www.bing.com%s_%s.jpg", img.URLBase, selected.Variant)
-			c.Header("Cache-Control", "public, max-age=604800") // 7天
+			if maxAge > 0 {
+				c.Header("Cache-Control", fmt.Sprintf("public, max-age=%d", maxAge))
+			} else {
+				c.Header("Cache-Control", "no-cache, no-store, must-revalidate")
+			}
 			c.Redirect(http.StatusFound, bingURL)
 		} else {
-			serveLocal(c, selected.StorageKey, img.Date)
+			serveLocal(c, selected.StorageKey, img.Date, maxAge)
 		}
 	} else {
-		serveLocal(c, selected.StorageKey, img.Date)
+		serveLocal(c, selected.StorageKey, img.Date, maxAge)
 	}
 }
 
-func serveLocal(c *gin.Context, key string, etag string) {
+func serveLocal(c *gin.Context, key string, etag string, maxAge int) {
 	if etag != "" {
 		c.Header("ETag", fmt.Sprintf("\"%s\"", etag))
 		if c.GetHeader("If-None-Match") == fmt.Sprintf("\"%s\"", etag) {
@@ -263,7 +274,12 @@ func serveLocal(c *gin.Context, key string, etag string) {
 	if contentType != "" {
 		c.Header("Content-Type", contentType)
 	}
-	c.Header("Cache-Control", "public, max-age=604800") // 7天
+
+	if maxAge > 0 {
+		c.Header("Cache-Control", fmt.Sprintf("public, max-age=%d", maxAge))
+	} else {
+		c.Header("Cache-Control", "no-cache, no-store, must-revalidate")
+	}
 	io.Copy(c.Writer, reader)
 }
 

internal/http/handlers/image_test.go

@@ -38,7 +38,7 @@ func TestHandleImageResponseRedirect(t *testing.T) {
 		c, _ := gin.CreateTestContext(w)
 		c.Request, _ = http.NewRequest("GET", "/api/v1/image/today?variant=UHD", nil)
 
-		handleImageResponse(c, img)
+		handleImageResponse(c, img, 0)
 
 		assert.Equal(t, http.StatusFound, w.Code)
 		assert.Contains(t, w.Header().Get("Location"), "bing.com")

internal/http/router.go

@@ -80,7 +80,7 @@ func SetupRouter(webFS embed.FS) *gin.Engine {
 		path := c.Request.URL.Path
 
 		// 如果请求的是 API 或 Swagger，则不处理静态资源 (让其返回 404)
-		if strings.HasPrefix(path, "/api") || strings.HasPrefix(path, "/swagger") {
+		if strings.HasPrefix(path, "/api/v1") || strings.HasPrefix(path, "/swagger") {
 			return
 		}
 

scripts/build.bat

@@ -27,8 +27,8 @@ set PLATFORMS=linux/amd64 linux/arm64 windows/amd64 windows/arm64 darwin/amd64 d
 for %%p in (%PLATFORMS%) do (
     for /f "tokens=1,2 delims=/" %%a in ("%%p") do (
         set OUTPUT_NAME=%APP_NAME%-%%a-%%b
-        set BINARY_NAME=!OUTPUT_NAME!
-        if "%%a"=="windows" set BINARY_NAME=!OUTPUT_NAME!.exe
+        set BINARY_NAME=%APP_NAME%
+        if "%%a"=="windows" set BINARY_NAME=%APP_NAME%.exe
         
         echo 正在编译 %%a/%%b...
         
@@ -47,10 +47,10 @@ for %%p in (%PLATFORMS%) do (
             copy /y config.example.yaml !PACKAGE_DIR!\ >nul
             copy /y README.md !PACKAGE_DIR!\ >nul
             
-            pushd %OUTPUT_DIR%
-            tar -czf !OUTPUT_NAME!.tar.gz !OUTPUT_NAME!
-            rd /s /q !OUTPUT_NAME!
+            pushd !PACKAGE_DIR!
+            tar -czf ..\!OUTPUT_NAME!.tar.gz .
             popd
+            rd /s /q !PACKAGE_DIR!
             
             echo   %%a/%%b 打包完成: !OUTPUT_NAME!.tar.gz
         ) else (

scripts/build.ps1

@@ -38,9 +38,9 @@ foreach ($Platform in $Platforms) {
     $Arch = $parts[1]
     
     $OutputName = "$AppName-$OS-$Arch"
-    $BinaryName = $OutputName
+    $BinaryName = $AppName
     if ($OS -eq "windows") {
-        $BinaryName = "$OutputName.exe"
+        $BinaryName = "$AppName.exe"
     }
     
     Write-Host "正在编译 $OS/$Arch..."
@@ -63,10 +63,10 @@ foreach ($Platform in $Platforms) {
         Copy-Item "README.md" $PackageDir\
         
         $CurrentDir = Get-Location
-        Set-Location $OutputDir
-        tar -czf "${OutputName}.tar.gz" $OutputName
-        Remove-Item -Recurse -Force $OutputName
+        Set-Location $PackageDir
+        tar -czf "../${OutputName}.tar.gz" .
         Set-Location $CurrentDir
+        Remove-Item -Recurse -Force $PackageDir
         
         Write-Host "  $OS/$Arch 打包完成: ${OutputName}.tar.gz"
     } else {

scripts/build.sh

@@ -45,9 +45,9 @@ for PLATFORM in "${PLATFORMS[@]}"; do
     # 设置输出名称
     OUTPUT_NAME="${APP_NAME}-${OS}-${ARCH}"
     if [ "$OS" = "windows" ]; then
-        BINARY_NAME="${OUTPUT_NAME}.exe"
+        BINARY_NAME="${APP_NAME}.exe"
     else
-        BINARY_NAME="${OUTPUT_NAME}"
+        BINARY_NAME="${APP_NAME}"
     fi
     
     echo "正在编译 ${OS}/${ARCH}..."
@@ -71,7 +71,7 @@ for PLATFORM in "${PLATFORMS[@]}"; do
         done
         
         # 压缩为 tar.gz
-        tar -czf "${OUTPUT_DIR}/${OUTPUT_NAME}.tar.gz" -C "${OUTPUT_DIR}" "${OUTPUT_NAME}"
+        tar -czf "${OUTPUT_DIR}/${OUTPUT_NAME}.tar.gz" -C "${PACKAGE_DIR}" .
         
         # 删除临时打包目录
         rm -rf "$PACKAGE_DIR"

scripts/deploy.sh

@@ -0,0 +1,101 @@
+#!/bin/bash
+
+# 定时任务示例 (每30分钟执行一次):
+# */30 * * * * /path/to/project/scripts/deploy.sh >> /path/to/project/scripts/deploy_cron.log 2>&1
+
+# 项目根目录
+# 假设脚本位于 scripts 目录下
+PROJECT_DIR=$(cd $(dirname $0)/.. && pwd)
+cd $PROJECT_DIR
+
+# 日志文件
+LOG_FILE="$PROJECT_DIR/scripts/deploy.log"
+
+log() {
+    echo "$(date '+%Y-%m-%d %H:%M:%S') - $1" | tee -a "$LOG_FILE"
+}
+
+# 确保在项目根目录
+if [ ! -f "docker-compose.yml" ]; then
+    log "错误: 未能在 $PROJECT_DIR 找到 docker-compose.yml，请确保脚本位置正确。"
+    exit 1
+fi
+
+log "开始检查更新..."
+
+# 获取远程代码
+git fetch origin
+
+# 获取当前分支名
+BRANCH=$(git rev-parse --abbrev-ref HEAD)
+
+# 检查本地分支是否有上游分支
+UPSTREAM=$(git rev-parse --abbrev-ref @{u} 2>/dev/null)
+if [ -z "$UPSTREAM" ]; then
+    log "错误: 当前分支 $BRANCH 没有设置上游分支，无法自动对比更新。"
+    exit 1
+fi
+
+# 检查本地是否落后于远程
+LOCAL=$(git rev-parse HEAD)
+REMOTE=$(git rev-parse "$UPSTREAM")
+
+if [ "$LOCAL" = "$REMOTE" ]; then
+    log "代码已是最新 ($LOCAL)，无需更新。"
+    exit 0
+fi
+
+log "检测到远程变更 ($LOCAL -> $REMOTE)，准备开始升级..."
+
+# 检查是否有本地修改
+HAS_CHANGES=$(git status --porcelain)
+
+if [ -n "$HAS_CHANGES" ]; then
+    log "检测到本地修改，正在暂存以保留个性化配置..."
+    git stash
+    STASHED=true
+else
+    STASHED=false
+fi
+
+# 拉取新代码
+log "正在拉取远程代码 ($BRANCH)..."
+if git pull origin "$BRANCH"; then
+    log "代码拉取成功。"
+else
+    log "错误: 代码拉取失败。"
+    if [ "$STASHED" = true ]; then
+        git stash pop
+    fi
+    exit 1
+fi
+
+# 恢复本地修改
+if [ "$STASHED" = true ]; then
+    log "正在恢复本地修改..."
+    if git stash pop; then
+        log "本地修改已成功恢复。"
+    else
+        log "警告: 恢复本地修改时发生冲突，请手动检查 docker-compose.yml 等文件。"
+        # 即使冲突也尝试继续，或者你可以选择在此退出
+    fi
+fi
+
+# 确定 docker-compose 命令
+DOCKER_COMPOSE_BIN="docker-compose"
+if ! command -v $DOCKER_COMPOSE_BIN &> /dev/null; then
+    DOCKER_COMPOSE_BIN="docker compose"
+fi
+
+# 执行 docker-compose 部署
+log "正在执行 $DOCKER_COMPOSE_BIN 部署..."
+if $DOCKER_COMPOSE_BIN up -d --build; then
+    log "服务升级成功！"
+    # 清理无用镜像（可选）
+    docker image prune -f
+else
+    log "错误: $DOCKER_COMPOSE_BIN 部署失败。"
+    exit 1
+fi
+
+log "部署任务完成。"

webapp/src/views/Home.vue

@@ -173,13 +173,18 @@
             <span>加载中...</span>
           </div>
           
-          <button 
+          <div 
             v-else-if="hasMore"
+            ref="loadMoreTrigger"
+            class="inline-block"
+          >
+            <button 
               @click="loadMore"
               class="px-8 py-3 bg-white/10 backdrop-blur-md text-white rounded-lg font-semibold hover:bg-white/20 transition-all border border-white/30"
             >
               加载更多
             </button>
+          </div>
 
           <p v-else class="text-white/40">
             已加载全部图片
@@ -246,8 +251,8 @@ const router = useRouter()
 // 获取今日图片
 const { image: todayImage, loading: todayLoading } = useTodayImage()
 
-// 获取图片列表（使用服务端分页和筛选）
-const { images, loading, hasMore, loadMore, filterByMonth } = useImageList(30)
+// 获取图片列表（使用服务端分页和筛选，每页15张）
+const { images, loading, hasMore, loadMore, filterByMonth } = useImageList(15)
 
 // 筛选相关状态
 const selectedYear = ref('')
@@ -258,6 +263,10 @@ const imageRefs = ref<(HTMLElement | null)[]>([])
 const imageVisibility = ref<boolean[]>([])
 let observer: IntersectionObserver | null = null
 
+// 无限滚动加载
+const loadMoreTrigger = ref<HTMLElement | null>(null)
+let loadMoreObserver: IntersectionObserver | null = null
+
 // 计算可用的年份列表（基于当前日期生成，从2020年到当前年份）
 const availableYears = computed(() => {
   const currentYear = new Date().getFullYear()
@@ -360,16 +369,6 @@ const setupObserver = () => {
   })
 }
 
-// 初始化懒加载状态
-onMounted(() => {
-  // 初始化时设置
-  if (images.value.length > 0) {
-    imageVisibility.value = new Array(images.value.length).fill(false)
-    setTimeout(() => {
-      setupObserver()
-    }, 100)
-  }
-})
 
 // 监听 images 变化，动态更新 imageVisibility
 watch(() => images.value.length, (newLength, oldLength) => {
@@ -399,11 +398,51 @@ watch(() => images.value.length, (newLength, oldLength) => {
   }
 })
 
+// 设置无限滚动 Observer
+const setupLoadMoreObserver = () => {
+  if (loadMoreObserver) {
+    loadMoreObserver.disconnect()
+  }
+  
+  loadMoreObserver = new IntersectionObserver(
+    (entries) => {
+      entries.forEach(entry => {
+        if (entry.isIntersecting && !loading.value && hasMore.value) {
+          loadMore()
+        }
+      })
+    },
+    {
+      root: null,
+      rootMargin: '100px',
+      threshold: 0.1
+    }
+  )
+  
+  if (loadMoreTrigger.value) {
+    loadMoreObserver.observe(loadMoreTrigger.value)
+  }
+}
+
+// 初始化时设置无限滚动
+onMounted(() => {
+  if (images.value.length > 0) {
+    imageVisibility.value = new Array(images.value.length).fill(false)
+    setTimeout(() => {
+      setupObserver()
+      setupLoadMoreObserver()
+    }, 100)
+  }
+})
+
 // 清理
 onUnmounted(() => {
   if (observer) {
     observer.disconnect()
   }
+  if (loadMoreObserver) {
+    loadMoreObserver.disconnect()
+  }
 })
 
 // 格式化日期

webapp/src/views/ImageView.vue

@@ -89,7 +89,7 @@
           <div class="flex items-center gap-4">
             <button 
               @click="previousDay"
-              :disabled="navigating"
+              :disabled="navigating || !hasPreviousDay"
               class="flex items-center gap-2 px-4 py-2 bg-white/10 backdrop-blur-md text-white rounded-lg hover:bg-white/20 transition-all disabled:opacity-50 disabled:cursor-not-allowed"
             >
               <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
@@ -100,7 +100,7 @@
 
             <button 
               @click="nextDay"
-              :disabled="navigating || isToday"
+              :disabled="navigating || !hasNextDay"
               class="flex items-center gap-2 px-4 py-2 bg-white/10 backdrop-blur-md text-white rounded-lg hover:bg-white/20 transition-all disabled:opacity-50 disabled:cursor-not-allowed"
             >
               <span class="hidden sm:inline">后一天</span>
@@ -141,7 +141,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, computed } from 'vue'
+import { ref } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
 import { useImageByDate } from '@/composables/useImages'
 import { bingPaperApi } from '@/lib/api-service'
@@ -153,6 +153,11 @@ const currentDate = ref(route.params.date as string)
 const showInfo = ref(true)
 const navigating = ref(false)
 
+// 前后日期可用性
+const hasPreviousDay = ref(true)
+const hasNextDay = ref(true)
+const checkingDates = ref(false)
+
 // 拖动相关状态
 const infoPanel = ref<HTMLElement | null>(null)
 const infoPanelPos = ref({ x: 0, y: 0 })
@@ -230,9 +235,50 @@ const stopDrag = () => {
 // 使用 composable 获取图片数据（传递 ref，自动响应日期变化）
 const { image, loading, error } = useImageByDate(currentDate)
 
+// 检测指定日期是否有数据
+const checkDateAvailability = async (dateStr: string): Promise<boolean> => {
+  try {
+    await bingPaperApi.getImageMetaByDate(dateStr)
+    return true
+  } catch (e) {
+    return false
+  }
+}
+
+// 检测前后日期可用性
+const checkAdjacentDates = async () => {
+  if (checkingDates.value) return
+  
+  checkingDates.value = true
+  const date = new Date(currentDate.value)
+  
+  // 检测前一天
+  const prevDate = new Date(date)
+  prevDate.setDate(prevDate.getDate() - 1)
+  hasPreviousDay.value = await checkDateAvailability(prevDate.toISOString().split('T')[0])
+  
+  // 检测后一天（不能超过今天）
+  const nextDate = new Date(date)
+  nextDate.setDate(nextDate.getDate() + 1)
+  const today = new Date().toISOString().split('T')[0]
+  if (nextDate.toISOString().split('T')[0] > today) {
+    hasNextDay.value = false
+  } else {
+    hasNextDay.value = await checkDateAvailability(nextDate.toISOString().split('T')[0])
+  }
+  
+  checkingDates.value = false
+}
+
 // 初始化位置
 initPanelPosition()
 
+// 监听日期变化，检测前后日期可用性
+import { watch } from 'vue'
+watch(currentDate, () => {
+  checkAdjacentDates()
+}, { immediate: true })
+
 // 格式化日期
 const formatDate = (dateStr?: string) => {
   if (!dateStr) return ''
@@ -245,12 +291,6 @@ const formatDate = (dateStr?: string) => {
   })
 }
 
-// 判断是否是今天
-const isToday = computed(() => {
-  const today = new Date().toISOString().split('T')[0]
-  return currentDate.value === today
-})
-
 // 获取完整图片 URL
 const getFullImageUrl = () => {
   return bingPaperApi.getImageUrlByDate(currentDate.value, 'UHD', 'jpg')
@@ -265,7 +305,7 @@ const goBack = () => {
 
 // 前一天
 const previousDay = () => {
-  if (navigating.value) return
+  if (navigating.value || !hasPreviousDay.value) return
   
   navigating.value = true
   const date = new Date(currentDate.value)
@@ -282,7 +322,7 @@ const previousDay = () => {
 
 // 后一天
 const nextDay = () => {
-  if (navigating.value || isToday.value) return
+  if (navigating.value || !hasNextDay.value) return
   
   navigating.value = true
   const date = new Date(currentDate.value)
@@ -299,9 +339,9 @@ const nextDay = () => {
 
 // 键盘导航
 const handleKeydown = (e: KeyboardEvent) => {
-  if (e.key === 'ArrowLeft') {
+  if (e.key === 'ArrowLeft' && hasPreviousDay.value) {
     previousDay()
-  } else if (e.key === 'ArrowRight' && !isToday.value) {
+  } else if (e.key === 'ArrowRight' && hasNextDay.value) {
     nextDay()
   } else if (e.key === 'Escape') {
     goBack()