<?php
class Service_Postcode
{
    /**
     * @var null
     */
    public static $_modelClass = null;

    /**
     * @return Table_Postcode|null
     */
    public static function getModelInstance()
    {
        if (is_null(self::$_modelClass)) {
            self::$_modelClass = new Table_Postcode();
        }
        return self::$_modelClass;
    }

    /**
     * @param $row
     * @return mixed
     */
    public static function add($row)
    {
        $model = self::getModelInstance();
        return $model->add($row);
    }

    /**
     * @param $row
     * @param $value
     * @param string $field
     * @return mixed
     */
    public static function update($row, $value, $field = "postcode_id")
    {
        $model = self::getModelInstance();
        return $model->update($row, $value, $field);
    }

    /**
     * @param $value
     * @param string $field
     * @return mixed
     */
    public static function delete($value, $field = "postcode_id")
    {
        $model = self::getModelInstance();
        return $model->delete($value, $field);
    }

    /**
     * @param $value
     * @param string $field
     * @param string $colums
     * @return mixed
     */
    public static function getByField($value, $field = 'postcode_id', $colums = "*")
    {
        $model = self::getModelInstance();
        return $model->getByField($value, $field, $colums);
    }
    
    public static function getByWhere($where, $colums = "*")
    {
    	$model = self::getModelInstance();
    	return $model->getByWhere($where, $colums);
    }
        
    /**
     * @return mixed
     */
    public static function getAll()
    {
        $model = self::getModelInstance();
        return $model->getAll();
    }
    
    /**
     * @param array $condition
     * @param string $type
     * @param int $pageSize
     * @param int $page
     * @param string $order
     * @return mixed
     */
    public static function getByCondition($condition = array(), $type = '*', $pageSize = 0, $page = 1, $order = "")
    {
        $model = self::getModelInstance();
        return $model->getByCondition($condition, $type, $pageSize, $page, $order);
    }
    
    public static function getPostcodes($city_id,$postcode) {
    	$aPostcode = array();
        $condition = array('city_id'=>$city_id);
        //此处还有bug,若是整数这样比较多位就不行
        if(!empty($postcode)){
            if(is_numeric($postcode)){
                $postcode = $postcode+0;
            }
            $condition['postcode_no_start'] = $postcode;
            $condition['postcode_no_end'] = $postcode;
        }
    	$list = self::getByCondition($condition, '*',1,1);
        if(!empty($list)){
            $aPostcode[] = $postcode;
            return $aPostcode;
        }
        $list = self::getByCondition($condition, '*');
        foreach($list as $row){
            if($row['postcode_no_end']==''){
                if(!in_array($row['postcode_no'],$aPostcode)){
                    $aPostcode[] = $row['postcode_no'];
                }
            }elseif($row['postcode_no_end']==$row['postcode_no']){
                if(!in_array($row['postcode_no'],$aPostcode)){
                    $aPostcode[] = $row['postcode_no'];
                }
            }else{
                if($row['postcode_no_end']!=$row['postcode_no']){
                    $length = strlen($row['postcode_no']);
                    for($postcode=$row['postcode_no'];$postcode<=$row['postcode_no_end'];$postcode++){
                        $postcode = str_pad($postcode, $length, "0", STR_PAD_LEFT);
                        if(!in_array($postcode,$aPostcode)){
                            $aPostcode[] = $postcode;
                            $postcode = str_pad($postcode, $length, "0", STR_PAD_LEFT);
                            $aPostcode[] = strval($postcode);
                        }
                    }
                }
            }
            //$aPostcode[] =
        }
    	return $aPostcode;
    }

    /**
     * @param $val
     * @return array
     */
    public static function validator($val)
    {
        $validateArr = $error = array();
        
        return  Common_Validator::formValidator($validateArr);
    }

    /**
     * @param array $params
     * @return array
     */
    public  function getFields()
    {
        $row = array(
        	  'E0'=>'postcode_id',
              'E1'=>'city_id',
              'E2'=>'postcode_no',    
        );
        return $row;
    }

}