<?php
/**
 * API-call related functions
 *
 * @author Remdev
 * @license MIT License - https://github.com/Remdev/PHP-ccex-api
 */

class CcexAPI
{

    protected $api_url = 'https://c-cex.com/t/';
    protected $api_key = EXCH_CCEX_KEY;
    protected $api_secret; // = EXCH_CCEX_SECRET;	// not used yet

//     public function __construct($api_key = '') {
//         $this->api_key = $api_key;
//     }

    protected function jsonQuery($url) {
        $opts = array('http' =>
            array(
                'method'  => 'GET',
                'timeout' => 10
            )
        );

//        debuglog($url);
        $context  = stream_context_create($opts);
        $feed = @file_get_contents($url, false, $context);
//        debuglog($feed);

        if(!$feed)
        {
			debuglog("c-cex error $url");
        	return null;	//array('error' => 'Invalid parameters');
        }
        else
        {
            $a = json_decode($feed, true);
            if(!$a) debuglog($feed);

            return $a;
        }
    }


    public function getTickerInfo($pair){
        $json = $this->jsonQuery($this->api_url.$pair.'.json');
        return $json['ticker'];
    }


    public function getPairs(){
       $json = $this->jsonQuery($this->api_url.'pairs.json');
       return isset($json['pairs'])? $json['pairs']: array();
    }


    public function getVolumes($hours=24,$pair=false){
        $url = ($pair) ? 'volume' : 'lastvolumes&pair='.$pair.'&';
        return $this->jsonQuery($this->api_url."s.html?a=".$url."&h=".$hours);
    }

    public function getOrders($pair,$self = 0){
        $self = intval( (bool)$self );//return only 0 or 1
        return $this->jsonQuery($this->api_url."r.html?key={$this->api_key}&a=orderlist&self={$self}&pair={$pair}");
    }

    public function getHistory($pair,$fromTime = false,$toTime = false,$self = false){

        if($fromTime === false){
            $fromTime = 0;
        }

        if($toTime === false){
            $toTime = time();
        }

        $fromDate = date('Y-d-m',(int)$fromTime);
        $toDate = date('Y-d-m',(int)$toTime);

        $url = ($self) ? "r.html?key={$this->api_key}&" : "s.html?";
        return $this->jsonQuery($this->api_url.$url."a=tradehistory&d1={$fromDate}&d2={$toDate}&pair={$pair}");
    }

    public function makeOrder($type,$pair,$quantity,$price){
        if(strtolower($type) == 'sell'){
            $type = 's';
        }
        if(strtolower($type) == 'buy'){
            $type = 'b';
        }
        return $this->jsonQuery($this->api_url."r.html?key={$this->api_key}&a=makeorder&pair={$pair}&q={$quantity}&t={$type}&r={$price}");
    }

    public function cancelOrder($order){
        return $this->jsonQuery($this->api_url."r.html?key={$this->api_key}&a=cancelorder&id={$order}");
    }

    public function getBalance(){
        return $this->jsonQuery($this->api_url."r.html?key={$this->api_key}&a=getbalance");
    }

}