去除定时夜间模式;无法在线看时给出错误提示;(同步更新)预览图链接为空时不切换到该预览图;

src/components/DashBoard.vue

@@ -98,13 +98,7 @@
     <div>
       夜间模式<hr>
       <span style="display: inline-block">夜间模式跟随系统</span>
-      <el-switch v-model="darkConfig.followSystem"></el-switch><br>
-      <span style="display: inline-block">自定义起始时间(精确到分)</span>
-      <el-switch v-model="darkConfig.customTime"></el-switch><br>
-      <el-form :disabled="!darkConfig.customTime">
-        <el-time-picker v-model="darkConfig.startTime" /> ~
-        <el-time-picker v-model="darkConfig.endTime"/>
-      </el-form>
+      <el-switch v-model="darkConfig.followSystem"></el-switch>
     </div>
     <div>
       在线预览<hr>
@@ -293,63 +287,20 @@ function adjustForStyle(){
   let darkConfigStr = localStorage.getItem("darkConfig")
   if(darkConfigStr !== null) {
     darkConfig.value = JSON.parse(darkConfigStr)
-    if (darkConfig.value.followSystem)
-      if (isSystemDark()) {
-        dark()
-        isDark.value = true
-      }
-      else {
-        light()
-        isDark.value = false
-      }
-
-    if (darkConfig.value.customTime)
-      if (isDarkTime(darkConfig.value)) {
-        dark()
-        isDark.value = true
-      }
-      else {
-        light()
-        isDark.value = false
-      }
-
-    if(isDark.value)
+    if (darkConfig.value.followSystem && isSystemDark())
       dark()
     else
       light()
   }else {
     light()
-    darkConfig.value = {'followSystem': false, 'customTime': false}
+    darkConfig.value = {'followSystem': false}
   }
 }
 function isSystemDark(){
   return window.matchMedia('(prefers-color-scheme: dark)').matches
 }
-function isDarkTime(darkConfig){
-  let date = new Date()
-  let startTime = darkConfig.startTime
-  let endTime = darkConfig.endTime
-  if(startTime.hour > endTime.hour){    //隔夜   22:00 ~ 8:00
-    if(date.getHours() > endTime.getHours() && date.getHours() < startTime.getHours()){ // 大于结束时间且小于起始时间  16:00
-      return false
-    }else if(date.getHours() === endTime.getHours()){   //22:00 ~ 8:30   8:26
-      return date.getMinutes() <= endTime.getMinutes();
-    }else if(date.getHours() === startTime.getHours()){   //22:30 ~ 8:00    22:46
-      return date.getMinutes() > startTime.getMinutes();
-    }else
-      return true
-  }else{        //不隔夜   00:00 ~ 6:00      22:00 ~ 23:00
-    if(date.getHours() > endTime.getHours() || date.getHours() < startTime.getHours()){
-      return false
-    }else if(date.getHours() === startTime.getHours()){   // 01:30 ~ 06:00   01:32
-      return date.getMinutes() >= startTime.getMinutes();
-    }else if(date.getHours() === endTime.getHours()){     // 01:30 ~ 06:30   06:35
-      return date.getMinutes() <= endTime.getMinutes();
-    }else
-      return true
-  }
-}
 function dark(){
+  isDark.value = true
   let html = document.querySelector("html")
   if(!html.classList.contains("dark"))
     html.classList.add('dark')
@@ -357,6 +308,7 @@ function dark(){
   document.querySelector(".app").style.setProperty("background-color", null)
 }
 function light(){
+  isDark.value = false
   let html = document.querySelector("html")
   if(html.classList.contains("dark"))
     html.classList.remove('dark')
@@ -365,13 +317,6 @@ function light(){
   document.querySelector(".app").style.setProperty("background-color", "#c6e2ff")
 }
 function saveConfig(){
-  if(darkConfig.value.customTime) {
-    if(darkConfig.value.startTime === undefined || darkConfig.value.endTime === undefined){
-      ElMessage("请正确选择起始时间")
-      return
-    }
-  }
-
   if(lengthPerPage.value < 0 || lengthPerPage.value > 30) {
     ElMessage("分页页数设置错误，范围1~30")
     lengthPerPage.value = 30