<?php

namespace app\modules\admin\models;

use Yii;

/**
 * This is the model class for table "{{%attachment}}".
 *
 * @property int $a_id ID
 * @property string $file_name 文件名
 * @property string $file_path 路径
 * @property int $file_size 文件大小字节数
 * @property string $file_ext 文件扩展名
 * @property int $is_image 是否图片
 * @property int $is_thumb 是否缩略图
 * @property int $downloads 下载次数
 * @property string $hash 文件路径的md5
 * @property string $md5 文件内容的md5
 * @property int $user_id 前台用户
 * @property int $admin_id 后台用户
 * @property int $upload_time 创建时间
 * @property int $upload_ip 创建IP
 * @property string $folder 文件类型
 * @property int $list_order
 * @property int|null $is_used 使用状态 1：已使用 0：未使用 -1:删除
 * @property int $status 审核状态，-1：审核未通过 0：待审核 1：审核通过
 */
class Attachment extends \app\common\models\EActiveRecord
{
    /**
     * {@inheritdoc}
     */
    public static function tableName()
    {
        return '{{%attachment}}';
    }

    /**
     * {@inheritdoc}
     */
    public function rules()
    {
        return [
            [['file_path', 'hash', 'upload_time'], 'required'],
            [['file_size', 'is_image', 'is_thumb', 'downloads', 'user_id', 'admin_id', 'upload_time', 'upload_ip', 'list_order', 'is_used', 'status'], 'integer'],
            [['file_name'], 'string', 'max' => 200],
            [['file_path'], 'string', 'max' => 500],
            [['file_ext'], 'string', 'max' => 10],
            [['hash', 'md5', 'folder'], 'string', 'max' => 32],
        ];
    }

    /**
     * {@inheritdoc}
     */
    public function attributeLabels()
    {
        return [
            'a_id' => 'A ID',
            'file_name' => 'File Name',
            'file_path' => 'File Path',
            'file_size' => 'File Size',
            'file_ext' => 'File Ext',
            'is_image' => 'Is Image',
            'is_thumb' => 'Is Thumb',
            'downloads' => 'Downloads',
            'hash' => 'Hash',
            'md5' => 'Md5',
            'user_id' => 'User ID',
            'admin_id' => 'Admin ID',
            'upload_time' => 'Upload Time',
            'upload_ip' => 'Upload Ip',
            'folder' => 'Folder',
            'list_order' => 'List Order',
            'is_used' => 'Is Used',
            'status' => 'Status',
        ];
    }

    /**
     * 处理附件和信息关系
     * @param $files string  附件路径
     * @param $table_name 表名
     * @param $field 字段
     * @param $id 信息ID
     */
    public static function relateAttachmentByTable($files,$table_name,$field,$id)
    {
        if(empty($files))return;
        $fileList = explode(",",$files);
        $used = [];
        $newa = [];
        $attachmentIndexList = \app\modules\admin\models\AttachmentIndex::find()->where("table_name='".$table_name."' and field='".$field."' and data_id=$id")->all();
        if(is_array($attachmentIndexList))foreach($attachmentIndexList as $index)
        {
            $used[] = $index->a_id;
        }
        if(is_array($fileList))foreach($fileList as $file_path)
        {
            $attachment = \app\modules\admin\models\Attachment::find()->where("hash='".md5($file_path)."'")->one();
            if($attachment)
            {
                $attachmentIndex = \app\modules\admin\models\AttachmentIndex::find()->where("a_id=".$attachment->a_id." and table_name='".$table_name."' and field='".$field."' and data_id=$id")->one();
                if(empty($attachmentIndex))
                {
                    $indexModel = new \app\modules\admin\models\AttachmentIndex();
                    $indexModel->a_id = $attachment->a_id;
                    $indexModel->table_name = $table_name;
                    $indexModel->field = $field;
                    $indexModel->data_id = $id;
                    $indexModel->save();
                }
                $newa[] = $attachment->a_id;
            }
        }
        if(!empty($newa))
        {
            \app\modules\admin\models\Attachment::updateAll(['is_used' => 1], ['in', 'a_id', $newa]);
        }

        //处理未被使用的附件状态
        if(!empty($used))
        {
            foreach($used as $u)
            {
                if(!in_array($u,$newa))
                {
                    $diff[] = $u;
                }
            }
        }
        if(!empty($diff))
        {
            \app\modules\admin\models\Attachment::updateAll(['is_used' => -1], ['in', 'a_id', $diff]);
            \app\modules\admin\models\AttachmentIndex::deleteAll("a_id in(".join(",",$diff).") and table_name='".$table_name."' and field='".$field."' and data_id=$id");
            //写附件垃圾表
            $attachmentList = Attachment::findAll($diff);
            if(is_array($attachmentList))foreach($attachmentList as $attachment)
            {
                $trash = new AttachmentTrash();
                $trash->a_id = $attachment->a_id;
                $trash->file_path = $attachment->file_path;
                $trash->is_oss = Yii::$app->params['oss']['OPEN_OSS'];
                $trash->create_time = TIMESTAMP;
                $trash->save();
            }
        }

    }

    /**
     * 释放附件和信息关系
     * @param $table_name string  表
     * @param $field string 字段
     * @param $id 信息ID
     */
    public static function releaseAttachmentByTable($id,$table_name,$field)
    {
        $used = [];
        $attachmentIndexList =   \app\modules\admin\models\AttachmentIndex::find()->where("table_name='".$table_name."' and field='".$field."' and data_id=$id")->all();
        if(is_array($attachmentIndexList))foreach($attachmentIndexList as $index)
        {
            $used[] = $index->a_id;
            $index->delete();
        }
        if(!empty($used))
        {
            \app\modules\admin\models\Attachment::updateAll(['is_used' => -1], ['in', 'a_id', $used]);
            //写附件垃圾表
            $attachmentList = Attachment::findAll($used);
            if(is_array($attachmentList))foreach($attachmentList as $attachment)
            {
                $trash = new AttachmentTrash();
                $trash->a_id = $attachment->a_id;
                $trash->file_path = $attachment->file_path;
                $trash->is_oss = Yii::$app->params['oss']['OPEN_OSS'];
                $trash->create_time = TIMESTAMP;
                $trash->save();
            }
        }
    }
}