<?php
namespace Westdc\Visual;

class Record extends Database
{
	
	public $subdataset,$valueFilter;
	
	public $timeFiled = "utctime";
	
	private $sql;
	
	function __construct($uuid = NULL,$identifier = "")
	{
		parent::__construct();
		
		if(!empty($identifier))
		{
			$this->subdataset = $identifier;
		}
		
		if(!empty($uuid) && !empty($identifier))
		{
			$this->initVisual($uuid);
		}
	}
	
	public function __invoke()
	{
		return $this->getData();
	}
	
	public function initVisual($uuid)
	{
		$visual = new Visual;
		
		$var_data = $visual->getVisualVars($uuid);

        if(!empty($var_data['visual_valuefilter']))
            $this->valueFilter = (float)$var_data['visual_valuefilter'];

        if($var_data['visual_timefield_model'] == 'single') {
            $this->timeFiled = '"' . $var_data['visual_timefield'] . '"';
        }//single
        elseif($var_data['visual_timefield_model'] == 'multiple'){
            $timefield_temp = "(";
            if(!empty($var_data['visual_timefield_year']))
            {
                $timefield_temp .= $var_data['visual_timefield_year'] . "::character varying||";
            }

            $timefield_temp .= "'-'";

            if(!empty($var_data['visual_timefield_month']))
            {
                $timefield_temp .= "||".$var_data['visual_timefield_month']."::character varying||";
            }else{
                $timefield_temp .= '1';
            }

            $timefield_temp .= "'-";

            if(!empty($var_data['visual_timefield_day']))
            {
                $timefield_temp .= "'||".$var_data['visual_timefield_day'] . '::character varying';
            }else{
                $timefield_temp .= "1'";
            }

            $timefield_temp .= ")";

            $timefield_temp .= "::timestamp without time zone";

            $this->timeFiled = $timefield_temp;
        }//multiple
        elseif($var_data['visual_timefield_model'] == 'custom'){
            $this->timeFiled = $var_data['visual_timefield_model'];
        }//custom

        //时间字段为空的bug
        if(empty($var_data['visual_timefield_model'])){
            $this->timeFiled = "utctime";
        }else{
            if($var_data['visual_timefield_model'] == 'single' && empty($var_data['visual_timefield'])){
                $this->timeFiled = "utctime";
            }elseif($var_data['visual_timefield_model'] == 'multiple' && empty($var_data['visual_timefield_year'])){
                $this->timeFiled = "utctime";
            }elseif($var_data['visual_timefield_model'] == 'custom' && empty($var_data['visual_timefield_custom'])) {
                $this->timeFiled = "utctime";
            }
        }

        if(isset($var_data['data']) && !empty($var_data['data']))
            $this->sql = $this->makeSql($var_data['data'],$this->subdataset);
        else
		    $this->sql = $this->makeSql($var_data['visual_datatable'],$this->subdataset);
		
		//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))
		{
			
			$row['utctime'] = $this->utcMsTime(strtotime($row['utctime']));
			//var_dump($row);
			$data[] =  array(
				$row['utctime'],
				$row['value']
			);
		}
		
		return $data;
	}
	
	public function makeSql($table,$fieldValue)
	{
        $wheresql = "";
        if(!empty($this->valueFilter))
        {
            $wheresql = " WHERE \"$fieldValue\"<>".$this->valueFilter .' ';
        }

		$sql = "SELECT 
					{$this->timeFiled} as utctime , \"$fieldValue\" as value
				FROM $table as tbl
				$wheresql
				ORDER BY  
					extract(YEAR from {$this->timeFiled}) ASC,
					extract(MONTH from {$this->timeFiled}) ASC,
					extract(DAY from {$this->timeFiled}) ASC,
					extract(HOUR from {$this->timeFiled}) ASC,
					extract(MINUTE from {$this->timeFiled}) ASC,
					extract(SECOND from {$this->timeFiled}) ASC
				";
		
		return $sql;
	}
	
	public function utcMsTime($time=''){
		if(empty($time))
			return (time()+8*3600)*1000;
		else
			return ($time)*1000;
	}
}