<?php

namespace app\models;

use Yii;

/**
 * This is the model class for table "{{%option}}".
 *
 * @property int $id ID
 * @property int $cx_mch_id 平台商户ID
 * @property string $key 键
 * @property string $value 值
 * @property int $group 组，0=系统配置，1=安全配置，2=自定义配置
 * @property int $is_autoload 是否自动加载，0=否，1=是
 * @property string|null $desc 描述
 */
class Option extends \yii\db\ActiveRecord
{
    const GROUP_SYSTEM = 0;             //系统设置
    const GROUP_SECURE = 1;             //安全设置
    const GROUP_SELFDEF = 2;            //自定义配置

    const MAX_AGE = 3600;               //缓存的时间
    
    /**
     * {@inheritdoc}
     */
    public static function tableName()
    {
        return '{{%option}}';
    }

    /**
     * {@inheritdoc}
     */
    public function rules()
    {
        return [
            [['cx_mch_id', 'group', 'is_autoload'], 'integer'],
            [['key', 'value'], 'required'],
            [['value'], 'string'],
            [['key', 'desc'], 'string', 'max' => 2048],
        ];
    }

    /**
     * {@inheritdoc}
     */
    public function attributeLabels()
    {
        return [
            'id' => 'ID',
            'cx_mch_id' => '平台商户ID',
            'key' => '键',
            'value' => '值',
            'group' => '组，0=系统配置，1=安全配置，2=自定义配置',
            'is_autoload' => '是否自动加载，0=否，1=是',
            'desc' => '描述',
        ];
    }
    
        
    public function beforeSave($insert) {
        if(parent::beforeSave($insert)){
            if($this->isNewRecord){
            }
            return true;
        } else {
            return false;
        }
    }    
    
    /**
     * 获得缓存对象
     */
    public static function getCacheObj()
    {        
        $cache = Yii::$app->cache ? Yii::$app->cache : new yii\caching\DummyCache();
        return $cache;
    }   
    
    /**
     * 更新配置缓存
     * @param string $key 缓存键值
     * @param string|array $val 缓存值
     */
    public static function updateOptionCache($key,$value)
    {
        $cache = self::getCacheObj();
        return $cache->set($key, $value,  self::getMaxAge());
    }  
    
    /**
     * 删除缓存
     * @param string $key 缓存键值
     */
    public static function deleteOptionCache($key)
    {
        $cache = self::getCacheObj();
        return $cache->delete($key);        
    }    

    /**
     * 设置缓存key
     * @param string $key 缓存键值
     * @param integer $cx_mch_id 平台商户ID
     * @param integer $group 配置组
     */
    public static function setCacheKey($key, $cx_mch_id = 0, $group = 0)
    {
        return $cx_mch_id . '_' . $group . '_' . $key;
    }    
    
    /**
     * 设置配置
     * @param string $key 缓存键值
     * @param string|array $value 缓存值
     * @param integer $cx_mch_id 平台商户ID
     * @param integer $group 配置组
     * @param integer $is_autoload 是否自动加载
     * return boolean
     */
    public static function setOption($key, $value, $cx_mch_id = 0, $group = 0, $is_autoload = 0)
    {
        if(empty($key))
            return false;
        $model = Option::findOne([
            'cx_mch_id' => $cx_mch_id,
            'group' => $group,
            'key' => $key
        ]);
        if($model == null){
            $model = new Option();
            $model->cx_mch_id = $cx_mch_id;
            $model->group = $group;
            $model->key = $key;            
        }
        $model->value = serialize($value);
        $model->is_autoload = $is_autoload;
        //更新缓存
        if($group == 0 || $group == 1)
            self::updateOptionCache(self::setCacheKey($key, $cx_mch_id , $group), $value);
        return $model->save();
    }   
    
    /**
     * 获取配置
     * @param string $key 缓存键值
     * @param integer $cx_mch_id 平台商户ID
     * @param integer $group 配置组
     * @param integer|string|array $default 不存在时默认值
     */
    public static function getOption($key, $cx_mch_id = 0, $group = 0, $default = null)
    {
        $cache = self::getCacheObj();
        $value = $cache->get(self::setCacheKey($key, $cx_mch_id , $group));
        //开发环境不缓存
        $value = YII_ENV_DEV ? false : $value;
        if($value === false){
            $model = Option::findOne([
                'cx_mch_id' => $cx_mch_id,
                'group' => $group,
                'key' => $key
            ]);    
            if($model == null)
                return $default;
            $val = preg_replace_callback(
                '/s:([0-9]+):\"(.*?)\";/',
                function ($matches) {
                    return "s:" . strlen($matches[2]) . ':"' . $matches[2] . '";';
                },
                $model->value
            );
            $value = unserialize($val);            
            $cache->set(self::setCacheKey($key, $cx_mch_id , $group), $value, self::getMaxAge());
        }
        return $value;
    }    
    
    /**
     * 删除配置
     * @param string $key 缓存键值
     * @param integer $cx_mch_id 平台商户ID
     * @param integer $group 配置组
     */
    public function deleteOption($key, $cx_mch_id = 0, $group = 0)
    {
        $model = Option::findOne([
            'cx_mch_id' => $cx_mch_id,
            'group' => $group,
            'key' => $key
        ]);    
        if($model != null){
            //清除缓存
            if($group == 0 || $group == 1)
                self::deleteOptionCache(self::setCacheKey($key, $cx_mch_id , $group));
            return $model->delete();
        }
        return false;
    }    
    
    
    /**
     * 随机获取缓存时间
     * @param integer $min 最小整数
     * @param integer $max 最大整数
     * return integer
     */
    public static function getMaxAge($min = 1800, $max = 3600)
    {
        return mt_rand($min,$max);
    }   
    
    /**
     * 批量设置
     * @param arrar $list [
     * ['key' => 'keyA', 'value' => 'valueA' , 'cx_mch_id' => 'cx_mch_id', 'group' => 'group', 'is_autoload' => 'is_autoload'],
     * ]
     * return boolean
     */
    public static function setOptionList($list, $cx_mch_id = 0, $group = 0, $is_autoload = 0)
    {
        if(!is_array($list))
            return false;
        foreach ($list as $item){
            self::setOption(
                $item['key'],
                $item['value'],
                (isset($item['cx_mch_id']) ? $item['cx_mch_id'] : $cx_mch_id),
                (isset($item['group']) ? $item['group'] : $group),
                (isset($item['is_autoload']) ? $item['is_autoload'] : $is_autoload)
            );
        }
        return true;
    }    
    
    /**
     * 根据keys获得缓存
     * @param string $keys 缓存键值，多值使用,隔开
     * @param integer $cx_mch_id 平台商户ID
     * @param integer $group 配置组
     * @param integer|string|array $default 不存在时默认值
     * return boolean|array
     */
    public static function getOptionList($keys, $cx_mch_id = 0, $group = 0, $default = null)
    {
        if(is_string($keys))
            $keys = explode (',', $keys);
        if(!is_array($keys))
            return false;
        $list = [];
        foreach ($keys as $key){
            if(empty($key))
                continue;
            $value = self::getOption($key, $cx_mch_id, $group, $default);
            $list[$key] = $value;        
        }
        return $list;
    }       
}