diff --git a/data/update.log b/data/update.log
index 756e2ac..33f1354 100755
--- a/data/update.log
+++ b/data/update.log
@@ -116,4 +116,11 @@ CREATE INDEX on_options_key_IDX ON on_options ("key");
 
 20220513
 1. 主题分类排序优化
-2. 修改分类优化
\ No newline at end of file
+2. 修改分类优化
+
+20220525
+1. 修复link_list和get_a_link可以查询私有分类下的公有链接问题
+2. 新增查询指定分类下的链接接口：q_category_link
+
+20220527
+1. 新增订阅于在线更新
\ No newline at end of file
diff --git a/templates/admin/left.php b/templates/admin/left.php
index 1e5ebc8..3386ced 100755
--- a/templates/admin/left.php
+++ b/templates/admin/left.php
@@ -27,6 +27,7 @@
         <li class="layui-nav-item layui-nav-itemed">
           <a class="" href="javascript:;">系统设置</a>
           <dl class="layui-nav-child">
+            <dd><a href="/index.php?c=admin&page=setting/subscribe">订阅 & 更新</a></dd>
             <dd><a href="/index.php?c=admin&page=setting/site">站点设置</a></dd>
             <dd><a href="/index.php?c=admin&page=setting/theme">主题设置</a></dd>
             <dd><a href="/index.php?c=admin&page=setting/transition_page">过渡页面</a></dd>
diff --git a/templates/admin/setting/subscribe.php b/templates/admin/setting/subscribe.php
new file mode 100644
index 0000000..43988d5
--- /dev/null
+++ b/templates/admin/setting/subscribe.php
@@ -0,0 +1,176 @@
+<!-- 站点设置 -->
+<!-- 主题设置 -->
+<?php require_once(dirname(__DIR__).'/header.php'); ?>
+<?php include_once(dirname(__DIR__).'/left.php'); ?>
+<div class="layui-body">
+<!-- 内容主体区域 -->
+<div class="layui-row content-body place-holder" style="padding-bottom: 3em;">
+    <!-- 说明提示框 -->
+    <div class="layui-col-lg12">
+      <div class="setting-msg">
+        <ol>
+            <li>您可以前往：<a href="https://dwz.ovh/69h9q" rel = "nofollow" target = "_blank" title = "购买订阅服务">https://dwz.ovh/69h9q</a> 购买订阅服务，订阅后可以：</li>
+            <li>1. 享受一键更新OneNav</li>
+            <li>2. 可在线更新和下载主题（尚未实现）</li>
+            <li>3. 可享受一对一售后服务</li>
+            <li>4. 可帮助OneNav持续发展，让OneNav变得更加美好</li>
+        </ol>
+      </div>
+    </div>
+    <!-- 说明提示框END -->
+    <!-- 订阅表格 -->
+    <div class="layui-col-lg6">
+    <form class="layui-form layui-form-pane" action="">
+
+        <div class="layui-form-item">
+            <label class="layui-form-label">订单号</label>
+            <div class="layui-input-block">
+                <input type="text" name="order_id" value = "<?php echo $subscribe['order_id']; ?>" required  lay-verify="required" autocomplete="off" placeholder="请输入订单号" class="layui-input">
+            </div>
+        </div>
+
+        <div class="layui-form-item">
+            <label class="layui-form-label">订阅邮箱</label>
+            <div class="layui-input-block">
+                <input type="email" name="email" value = "<?php echo $subscribe['email']; ?>" required lay-verify="required|email" autocomplete="off" placeholder="订阅邮箱" class="layui-input">
+            </div>
+        </div>
+
+        <div class="layui-form-item" style = "display:none;">
+            <label class="layui-form-label">域名</label>
+            <div class="layui-input-block">
+                <input type="text" name="domain" value = "<?php echo $_SERVER['HTTP_HOST']; ?>" autocomplete="off" placeholder="网站域名" class="layui-input">
+            </div>
+        </div>
+
+        <div class="layui-form-item">
+            <label class="layui-form-label">到期时间</label>
+            <div class="layui-input-block">
+            <input type="text" name="end_time" readonly="readonly" value = "<?php echo date("Y-m-d",$subscribe['end_time']); ?>" autocomplete="off" placeholder="订阅到期时间" class="layui-input">
+            </div>
+        </div>
+
+        <div class="layui-form-item">
+            <button class="layui-btn" lay-submit="" lay-filter="set_subscribe">保存设置</button>
+        </div>
+
+    </form>
+    </div>
+    <!-- 订阅表格END -->
+    <hr>
+    <div class="layui-col-lg12">
+        <!-- <h3>更新</h3> -->
+        <form class="layui-form layui-form-pane" action="">
+
+            <div class="layui-form-item">
+                <div class="layui-inline">
+                    <label class="layui-form-label">当前版本</label>
+                    <div class="layui-input-inline">
+                        <input type="text" readonly = "readonly" id = "current_version" name="current_version" value = "<?php echo $current_version; ?>" required  lay-verify="required" autocomplete="off" placeholder="当前版本" class="layui-input">
+                    </div>
+                    <label class="layui-form-label">可用版本</label>
+                    <div class="layui-input-inline">
+                        <input type="text" readonly = "readonly" name="new_version" id = "new_version" value = "" required  lay-verify="required" autocomplete="off" placeholder="可用版本" class="layui-input">
+                    </div>
+                </div>
+            </div>
+            
+
+        </form>
+        <div class="layui-input-inline">
+            <button class="layui-btn" lay-submit="" onclick = "update_main()">立即更新</button>
+        </div>
+        <!-- 更新进度条 -->
+        <div id="progress">
+            <div class="layui-progress layui-progress-big" lay-filter="update_progress" lay-showPercent="true">
+                <div class="layui-progress-bar layui-bg-blue" lay-percent="0%"></div>
+            </div>
+            <div id="msg" style = "margin-top:1em;"></div>
+        </div>
+        <!-- 更新进度条END -->
+    </div>
+</div>
+</div>
+
+
+<?php include_once(dirname(__DIR__).'/footer.php'); ?>
+
+<script>
+    
+    //获取可更新版本
+    function available_version() {
+        var current_version = $("#current_version").val();
+        $.get("http://down.onenav.top/v1/get_version.php",{version:current_version},function(data,status){
+            $("#new_version").val(data);
+        });
+    }
+    available_version();
+    //立即更新按钮
+    function update_main() {
+        var current_version = $("#current_version").val();
+        var new_version = $("#new_version").val();
+        //如果当前版本和最新版本相同，则不能更新
+        if (current_version == new_version) {
+            layer.msg("已经是最新版本，无需更新！",{icon:5});
+        }
+        //否则可以更新
+        else {
+            update_status("1%","准备更新...");
+            //第一步检查更新信息
+            $.get("/index.php?c=api&method=check_subscribe",function(data,status){
+                update_status("10%","正在验证订阅信息...");
+                if( data.code == 200 ) {
+                    update_status("20%","订阅信息验证通过...");
+                    //取得必要的变量
+                    var email = data.data.email;
+                    var domain = data.data.domain;
+                    var key = data.data.key;
+                    var value = data.data.value;
+                    //下载更新程序
+                    $.get("/index.php?c=api&method=up_updater",function(data,status) {
+                        update_status("30%","正在检查更新程序...");
+                        if( data.code == 200 ) {
+                            //继续往下执行
+                            update_status("40%","更新程序准备完成...");
+                            //准备下载升级包
+                            update_status("50%","准备下载升级包...");
+                            $.get("/update.php",{version:new_version,key:key,value:value,type:'main'},function(data,stauts){
+                                update_status("70%","升级包下载完毕，正在校验版本...");
+                                if( data.code == 200 ) {
+                                    //校验新版本
+                                    $.get("/index.php?c=api&method=check_version",{version:new_version},function(data,status){
+                                        if(data.code == 200) {
+                                            update_status("100%","更新完成！");
+                                        }
+                                        else {
+                                            layer.msg(data.msg,{icon:5,time: 0});
+                                        }
+                                    });
+                                }
+                                else{
+                                    layer.msg(data.msg,{icon:5,time: 0});
+                                }
+                            });
+                        }
+                        else {
+                            layer.msg(data.msg,{icon:5,time: 0});
+                        }
+                    });
+                }
+                else{
+                    layer.msg(data.msg,{icon:5,time: 0});
+                }
+            });
+        }
+    }
+    //进度和更新提示函数
+    function update_status(progress,msg) {
+        layui.use('element', function(){
+            var element = layui.element;
+            $("#progress").show();
+            element.progress('update_progress', progress);
+            $("#msg").text(msg);
+        });
+        
+    }
+</script>
\ No newline at end of file
diff --git a/templates/admin/setting/theme.php b/templates/admin/setting/theme.php
index e7f1780..600cb95 100644
--- a/templates/admin/setting/theme.php
+++ b/templates/admin/setting/theme.php
@@ -18,20 +18,23 @@
             ?>
             <!-- 主题列表 -->
             <div class="layui-col-lg3">
-                <fieldset style = "padding:1em;border:0px;height:170px;border:1px dashed #1E9FFF;box-shadow: 2px 2px 3px #888888;color:#666666">
-                    <legend style = "font-size:32px;"><?php echo $key; ?></legend>
-                    <p><h2><?php echo $theme['info']->name ?></h2></p>
-                    <p>版本：<?php echo $theme['info']->version ?></p>
-                    <p>更新时间：<?php echo $theme['info']->update ?></p>
-                    <br />
+                <fieldset style = "padding:1em;border:0px;height:280px;border:1px dashed #1E9FFF;box-shadow: 2px 2px 3px #888888;color:#666666">
+                    <legend style = "font-size:24px;"><?php echo $key; ?> - <?php echo $theme['info']->version ?></legend>
+                    
+                    <!-- 主题图片 -->
+                    <div class = "screenshot"><p><img src="<?php echo $theme['info']->screenshot; ?>" alt=""></p></div>
+                    <!-- 主题图片END -->
+                    
                     <p>
                     <div class="layui-btn-group">
                         <button type="button" class="layui-btn layui-btn-sm" onclick = "set_theme('<?php echo $key; ?>')">使用</button>
                         <button type="button" class="layui-btn layui-btn-sm" onclick = "theme_detail('<?php echo $key; ?>')">详情</button>
                         <button type="button" class="layui-btn layui-btn-sm" onclick = "theme_config('<?php echo $key; ?>')">参数设置</button>
+                        <button type="button" class="layui-btn layui-btn-sm layui-btn-danger" onclick = "delete_theme('<?php echo $key; ?>')">删除</button>
                         <?php if( $current_them == $key ) { ?>
                         <button type="button" class="layui-btn layui-btn-sm layui-btn-danger">当前主题</button>
                         <?php } ?>
+
                     </div>
                     </p>
                 </fieldset>
diff --git a/templates/admin/static/embed.js b/templates/admin/static/embed.js
index 6eee47c..ee4d27d 100755
--- a/templates/admin/static/embed.js
+++ b/templates/admin/static/embed.js
@@ -389,6 +389,33 @@ layui.use(['element','table','layer','form','upload'], function(){
     return false; //阻止表单跳转。如果需要表单跳转，去掉这段即可。
   });
 
+  //保存订阅信息
+  form.on('submit(set_subscribe)', function(data){
+    var order_id = data.field.order_id;
+    $.get('http://down.onenav.top/v1/check_subscribe.php',data.field,function(data,status){
+      
+      if(data.code == 200) {
+        //order_id = data.data.order_id;
+        email = data.data.email;
+        end_time = data.data.end_time;
+        //存储到数据库中
+        $.post("index.php?c=api&method=set_subscribe",{order_id:order_id,email:email,end_time:end_time},function(data,status){
+          if(data.code == 0) {
+            layer.msg(data.data, {icon: 1});
+          }
+          else{
+            layer.msg(data.err_msg, {icon: 5});
+          }
+        });
+      }
+      else{
+        layer.msg(data.msg, {icon: 5});
+      }
+    });
+    console.log(data.field) //当前容器的全部表单字段，名值对形式：{name: value}
+    return false; //阻止表单跳转。如果需要表单跳转，去掉这段即可。
+  });
+
    //保存站点设置
    form.on('submit(set_transition_page)', function(data){
     $.post('/index.php?c=api&method=set_transition_page',data.field,function(data,status){
@@ -808,4 +835,21 @@ function export_link(url, fileName) {
     layer.close(index);
   });
   
+}
+
+//删除主题
+function delete_theme(name) {
+  layer.confirm('确认删除此主题(' + name + ')?', {icon: 3, title:'重要提示'}, function(index){
+    $.post("index.php?c=api&method=delete_theme",{name:name},function(data,status){
+      if( data.code == 200 ) {
+        layer.msg(data.msg,{icon:1});
+        setTimeout(() => {
+          window.location.reload();
+        }, 2000);
+      }
+      else{
+        layer.msg(data.msg,{icon:5});
+      }
+    });
+  });
 }
\ No newline at end of file
diff --git a/templates/admin/static/style.css b/templates/admin/static/style.css
index 89fc126..4462f9e 100755
--- a/templates/admin/static/style.css
+++ b/templates/admin/static/style.css
@@ -106,4 +106,16 @@
 /* 占位用 */
 .place-holder{
     padding-bottom: 3em;
+}
+.screenshot {
+    height:220px;
+}
+.screenshot img{
+    max-width: auto;
+    max-height: 200px;
+}
+
+#progress{
+    display:none;
+    margin-top:1em;
 }
\ No newline at end of file