diff --git a/app/controller/ResourceController.php b/app/controller/ResourceController.php
index 1e8feca..83e0408 100644
--- a/app/controller/ResourceController.php
+++ b/app/controller/ResourceController.php
@@ -142,8 +142,19 @@ class ResourceController
   /**
    * 资源 复制到
    */
-  public function copyTo()
+  public function copyTo(Resource $resource, Request $request)
   {
+    Db::startTrans();
+    try {
+      // 复制资源
+      $res = $resource->copyTo($request->param('ids'), $request->param('to_id'));
+      Db::commit();
+    } catch (\Exception $e) {
+      Db::rollback();
+      return jsonReturn(-5, $e->getMessage());
+    }
+
+    return json($res);
   }
 
   /**
diff --git a/app/model/File.php b/app/model/File.php
index 9fbd1a5..4bd3c32 100644
--- a/app/model/File.php
+++ b/app/model/File.php
@@ -6,21 +6,38 @@ use app\exception\ModelException;
 
 class File extends Model
 {
+
   /**
    * @param $resource 资源对象
-   * @param $files 素材数组
-   * @param $file_input_mode 素材录入方式
-   * 添加资源 素材关联表
+   * @param $accredit_files 授权素材数组
+   * 添加 授权素材
+   */
+  public function addAccreditFile($resource, $accredit_files)
+  {
+    foreach ($accredit_files as $accredit_file) {
+      $accredit_file['type'] = 2;
+      $accredit_file_array[] = $accredit_file;
+    }
+    // 资源素材关联 系统会自动插入
+    $resource->accreditFiles()->saveAll($accredit_file_array);
+  }
+
+  /**
+   * @param $resource 资源对象
+   * @param $files 素材
+   * 添加 素材
    */
   public function addFile($resource, $files, $file_input_mode)
   {
     foreach ($files as $file) {
+      $file['type'] = 1;
       $file['file_input_mode'] = $file_input_mode;
       $file_array[] = $file;
     }
     // 资源素材关联 系统会自动插入
     $resource->files()->saveAll($file_array);
   }
+
   /**
    * @param $files 素材数组
    * 获得一组素材的大小
diff --git a/app/model/Model.php b/app/model/Model.php
index b090112..42a10dd 100644
--- a/app/model/Model.php
+++ b/app/model/Model.php
@@ -18,6 +18,7 @@ class Model extends BaseModel
 {
     // msg
     public $moveMsg;
+    public $copyMsg;
     public $getMsg;
     public $addMsg;
     public $updateMsg;
@@ -50,6 +51,7 @@ class Model extends BaseModel
         $this->listCacheKey = $this->className . '_cache_list';
         $this->detailCacheKey = $this->className . '_cache_detail';
         $this->moveMsg = lang('移动成功');
+        $this->copyMsg = lang('复制成功');
         $this->getMsg = lang('获取成功');
         $this->addMsg = lang('添加成功');
         $this->updateMsg = lang('修改成功');
diff --git a/app/model/Resource.php b/app/model/Resource.php
index d61976d..9c71870 100644
--- a/app/model/Resource.php
+++ b/app/model/Resource.php
@@ -12,22 +12,32 @@ class Resource extends Model
   }
 
   /**
-   * 资源 素材 多对多
+   * 资源 普通素材 一对多
    */
   public function files()
   {
-    return $this->belongsToMany(File::class, ResourceFile::class, 'file_id', 'resource_id');
+    return $this->hasMany(File::class,  'resource_id', 'id')->where('type', 1);
   }
 
   /**
-   * 资源 授权文件 一对多
+   * 资源 授权素材 一对多
    */
   public function accreditFiles()
   {
-    return $this->hasMany(AccreditFile::class, 'resource_id', 'id');
+    return $this->hasMany(File::class,  'resource_id', 'id')->where('type', 2);
   }
 
   /**
+   * 资源 所有素材
+   */
+  public function allFiles()
+  {
+    return $this->hasMany(File::class,  'resource_id', 'id');
+  }
+
+
+
+  /**
    * @param $param 前端提交的参数
    * @return array
    * 添加资源
@@ -37,9 +47,10 @@ class Resource extends Model
     try {
       //插入资源表
       $resource =  self::create($param);
+
       //存在授权文件 插入授权文件表
       if ($param['copyright_type'] == 2 && isset($param['accredit_files'])) {
-        $resource->accreditFiles()->saveAll($param['accredit_files']);
+        (new File())->addAccreditFile($resource, $param['accredit_files']);
       }
       //插入素材表 
       (new File())->addFile($resource, $param['files'], $param['file_input_mode']);
@@ -49,6 +60,7 @@ class Resource extends Model
     } catch (\Exception $e) {
       throw new ModelException($e->getMessage());
     }
+
     return dataReturn($this->sucCode, $this->addMsg, $resource->id);
   }
 
@@ -81,6 +93,7 @@ class Resource extends Model
         //移动到同文件夹 无需操作
         continue;
       }
+
       //1 更新原文件夹 以及所有父文件夹 大小和数量
       (new ResourceDir())->changeDirSizeAndCount($resource, $resource->parent_id, '-');
 
@@ -93,6 +106,62 @@ class Resource extends Model
     }
     return dataReturn($this->sucCode, $this->moveMsg);
   }
+
+
+  /**
+   * @param $ids 需要复制的资源ids
+   * @param $to_id 文件夹id
+   * @return array
+   * 移动操作
+   */
+  public function copyTo($ids, $to_id)
+  {
+    foreach ($ids as $resource_id) {
+      //复制需要 需要复制里面所有的素材
+      $resource = $this::with(['files', 'accredit_files'])->find($resource_id);
+
+      //1.创建一个新资源 
+      $this->copyResource($resource->toArray(), $to_id);
+
+      //2 更新 新的文件夹 以及所有父文件夹 大小和数量
+      (new ResourceDir())->changeDirSizeAndCount($resource, $to_id, '+');
+    }
+    return dataReturn($this->sucCode, $this->copyMsg);
+  }
+
+  /**
+   * @param $resource 资源数组(因为前台创建是数组 保持一致)
+   * @param $to_id 复制到的文件夹id
+   * @return array
+   * 复制一个资源数据
+   */
+  public function copyResource($resource, $to_id)
+  {
+    //资源表字段更新
+    unset($resource['id']);
+    $resource['create_time'] = date('Y-m-d H:i:s');
+    $resource['update_time'] = date('Y-m-d H:i:s');
+    $resource['parent_id'] = $to_id;
+
+    //关联表去掉关联字段
+    if (isset($resource['files'])) {
+      foreach ($resource['files'] as $key => $file) {
+        unset($resource['files'][$key]['id']);
+        unset($resource['files'][$key]['resource_id']); //去掉原来的关联关系
+
+      }
+    }
+
+    if (isset($resource['accredit_files'])) {
+      foreach ($resource['accredit_files'] as $key => $file) {
+        unset($resource['accredit_files'][$key]['id']);
+        unset($resource['accredit_files'][$key]['resource_id']); //去掉原来的关联关系
+      }
+    }
+
+    //重新创建资源
+    return  $this->addResource($resource);
+  }
   /**
    * @param $resource 资源对象
    * @return array
@@ -103,7 +172,9 @@ class Resource extends Model
     $size = 0;
     $count = 0;
     foreach ($resource->files as $file) {
-      $size += $file['size'];
+      if (isset($file['size'])) {
+        $size += $file['size'];
+      }
       $count++;
     }
     return [
diff --git a/app/model/ResourceDir.php b/app/model/ResourceDir.php
index a171f54..cbed422 100644
--- a/app/model/ResourceDir.php
+++ b/app/model/ResourceDir.php
@@ -43,7 +43,7 @@ class ResourceDir extends Model
   }
 
   /**
-   * @param $resource 资源
+   * @param $resource 资源对象
    * @param $resource_dir_id 移入/移出的文件夹id
    * @param $resource_dir_id method + 移入 - 移除
    * @return array
@@ -51,6 +51,11 @@ class ResourceDir extends Model
    */
   public function changeDirSizeAndCount($resource, $resource_dir_id, $method = '+')
   {
+
+    //资源还不属于文件夹
+    if ($resource_dir_id == 0) {
+      return true;
+    }
     $resource_dir = $this::find($resource_dir_id);
     if ($method === '+') {
       $this::whereIn('id', $resource_dir['id_path'])->inc('resource_size', $resource->file_size)
@@ -61,6 +66,7 @@ class ResourceDir extends Model
         ->dec('resource_count', 1)
         ->update();
     }
+    return dataReturn($this->sucCode, $this->addMsg);
   }
 
   /**
diff --git a/route/app.php b/route/app.php
index b471a3c..3d7d5f2 100644
--- a/route/app.php
+++ b/route/app.php
@@ -23,6 +23,7 @@ Route::group('resource', function () {
     Route::get('/share/:id', 'share');
     Route::post('/rename', 'rename');
     Route::post('/move_to', 'moveTo');
+    Route::post('/copy_to', 'copyTo');
 })->prefix('resource/');
 
 Route::group('resourceDir', function () {