<?php
namespace Westdc\Visual;

class Record extends Database
{
	
	public $subdataset,$valueFilter,$vars,$uuid,$xaxis,$field;	
	private $sql;
	
	function __construct($uuid,$identifier )
	{
		parent::__construct();
		
		$this->uuid=$uuid;
		$this->subdataset = $identifier;
		$this->init();
	}
	
	public function __invoke()
	{
		return $this->getData();
	}
	
	public function init()
	{
		$visual = new Visual;
		
		$var_data = $visual->getVisualVars($this->uuid);
        $this->vars = $var_data['variable'];
		$this->xaxis=$var_data['xaxis'];
		$json=json_decode($this->vars,true);
		//$subvar=array_filter($json,function($sub) { return $sub['name']==$this->subdataset; });
		$subvar=$json[$this->subdataset];
		$this->field=$subvar['name'];
		if (isset($subvar['sql']) && !empty($subvar['sql']))
			$this->sql=$this->makeSql($subvar['sql']);
		elseif(isset($var_data['data']) && !empty($var_data['data']))
		{
            $condition=null;
			if (isset($subvar['condition']) && !empty($subvar['condition']))
				$condition=$subvar['condition'];
			$this->sql = $this->makeSql($var_data['data'],$condition);
		}
		//echo $this->sql;exit();
	}
	
	public function getSql()
	{
		return $this->sql;
	}
	
	public function getData()
	{
		$rs = $this->db->query($this->sql);
	
		$data = [];
		while($row = $rs->fetch(\PDO::FETCH_ASSOC))
		{
			if ($this->xaxis!='category')
				$row[$this->xaxis] = $this->utcMsTime(strtotime($row[$this->xaxis]));
			//var_dump($row);
			$t=[];
			foreach($row as $k=>$v)
				$t[]=$v;
			$data[] =  $t;
		}
		
		return $data;
	}
	
	public function makeSql($table,$condition=NULL)
	{
        $wheresql = "";
		if ($condition)
		{
			$filter=explode(';',$condition);
			if(!empty($filter))
			{
			    if(is_string($filter))
			        $wheresql = " WHERE $filter ";
			    elseif(is_array($filter))
			    {
			        $wheresql = ' WHERE '.join(" AND ",$filter);
			    }
			}
		}

		$sql = "SELECT {$this->xaxis},{$this->field}
				FROM ($table) as tbl
				$wheresql
				ORDER BY  {$this->xaxis}";
		return $sql;
	}
	
	public function utcMsTime($time=''){
		if(empty($time))
			return (time()+8*3600)*1000;
		else
			return ($time)*1000;
	}
}