<?php

namespace jiaoyin;

/*
    binance合约接口
*/

class BinanceFutures
{
    static private string $host   = 'https://fapi.binance.com';
    private string        $apikey = '';
    private string        $secret = '';

    public function __construct($apikey = '', $secret = '', $host = '')
    {
        $this->apikey = $apikey;
        $this->secret = $secret;
        if (!empty($host)) {
            self::$host = $host;
        }
    }

    static private function createUrl($path): string
    {
        return self::$host . $path;
    }

    static private function createHeader($apikey): array
    {
        return ["X-MBX-APIKEY:" . $apikey];
    }

    static private function createSign($secret, $param)
    {
        $len = count($param);
        if ($len == 0) {
            output('param 为空，签名失败');
            return $param;
        }
        $paramStr = http_build_query($param);
        return hash_hmac('sha256', $paramStr, $secret);
    }

    public function requestAccount($method, $path, $param)
    {
        if (empty($this->apikey) || empty($this->secret)) {
            output('api 或 secret 为空');
            return ['code' => -1, 'msg' => 'apikey or secret is empty'];
        }
        $url                = $this->createUrl($path);
        $param['timestamp'] = getMicrotime();
        $param['signature'] = $this->createSign($this->secret, $param);
        $header             = $this->createHeader($this->apikey);
        if (!in_array(strtoupper($method), ['GET', 'POST', 'DELETE'])) {
            output('请求方法错误', $method, $path, $param);
            return 0;
        }
        $data = json_encode([]);
        if (strtoupper($method) == 'POST') {
            $data = Curl::httpPost($url, $param, $header);
        }
        if (strtoupper($method) == 'GET') {
            $data = Curl::httpGet($url, $param, $header);
        }
        if (strtoupper($method) == 'DELETE') {
            $data = Curl::httpDelete($url, $param, $header);
        }
        return json_decode($data, true);
    }

    static public function requestMarket($method, $path, $param)
    {
        $url = self::createUrl($path);
        if (!in_array(strtoupper($method), ['GET', 'POST', 'DELETE'])) {
            output('请求方法错误', $method, $path, $param);
            return 0;
        }
        $data = json_encode([]);
        if (strtoupper($method) == 'POST') {
            $data = Curl::httpPost($url, $param);
        }
        if (strtoupper($method) == 'GET') {
            $data = Curl::httpGet($url, $param);
        }
        if (strtoupper($method) == 'DELETE') {
            $data = Curl::httpDelete($url, $param);
        }
        return json_decode($data, true);
    }

    public function cancelOrderById($param)
    {
        $path   = '/fapi/v1/order';
        $method = 'DELETE';
        return $this->requestAccount($method, $path, $param);
    }

    //查询所有挂单
    public function openOrders($param)
    {
        $path   = '/fapi/v1/openOrders';
        $method = 'GET';
        return $this->requestAccount($method, $path, $param);
    }
    //取消所有订单
    public function cancelAllOpenOrders($param)
    {
        $path   = '/fapi/v1/allOpenOrders';
        $method = 'DELETE';
        return $this->requestAccount($method, $path, $param);
    }

    //下单
    public function order($param)
    {
        $path   = '/fapi/v1/order';
        $method = 'POST';
        return $this->requestAccount($method, $path, $param);
    }

    //获取或者延长listenKey
    public function listenKey($param = [])
    {
        $path   = '/fapi/v1/listenKey';
        $method = 'POST';
        return $this->requestAccount($method, $path, $param);
    }

    //获取仓位
    public function account($param = [])
    {
        $path   = '/fapi/v2/account';
        $method = 'GET';
        return $this->requestAccount($method, $path, $param);
    }

    //查询历史订单
    public function allOrders($param)
    {
        $path   = '/fapi/v1/allOrders';
        $method = 'GET';
        return $this->requestAccount($method, $path, $param);
    }

    //查询历史成交子订单
    public function userTrades($param)
    {
        $path   = '/fapi/v1/userTrades';
        $method = 'GET';
        return $this->requestAccount($method, $path, $param);
    }

    //查询持仓模式
    public function positionSideDual($param = [])
    {
        $path   = '/fapi/v1/positionSide/dual';
        $method = 'GET';
        return $this->requestAccount($method, $path, $param);
    }

    //设置持仓模式
    public function setPositionSideDual($param)
    {
        $path   = '/fapi/v1/positionSide/dual';
        $method = 'POST';
        return $this->requestAccount($method, $path, $param);
    }

    //查询资产
    public function balance($param = [])
    {
        $path   = '/fapi/v2/balance';
        $method = 'GET';
        return $this->requestAccount($method, $path, $param);
    }

    //查询杠杆层级
    public function leverageBracket($param = [])
    {
        $path   = '/fapi/v1/leverageBracket';
        $method = 'GET';
        return $this->requestAccount($method, $path, $param);
    }

    //查询用户持仓风险，杠杆倍数
    public function positionRisk($param = [])
    {
        $path   = '/fapi/v2/positionRisk';
        $method = 'GET';
        return $this->requestAccount($method, $path, $param);
    }

    //设置杠杆
    public function leverage($param)
    {
        $path   = '/fapi/v1/leverage';
        $method = 'POST';
        return $this->requestAccount($method, $path, $param);
    }
    //查询资金流水
    public function income($param)
    {
        $path   = '/fapi/v1/income';
        $method = 'GET';
        return $this->requestAccount($method, $path, $param);
    }
    //rateLimit
    public function rateLimit($param)
    {
        $path   = '/fapi/v1/rateLimit/order';
        $method = 'GET';
        return self::requestAccount($method, $path, $param);
    }

    /*
     * ==================================
     * 以下公共接口，无限apikey
     * ==================================
     */
    //24小时成交数据
    static public function ticker24hr($param = [])
    {
        $path   = '/fapi/v1/ticker/24hr';
        $method = 'GET';
        return self::requestMarket($method, $path, $param);
    }

    //获取交易对和交易规则
    static public function exchangeInfo($param = [])
    {
        $path   = '/fapi/v1/exchangeInfo';
        $method = 'GET';
        return self::requestMarket($method, $path, $param);
    }
    //获取k线数据
    static public function klines($param)
    {
        $path   = '/fapi/v1/klines';
        $method = 'GET';
        return self::requestMarket($method, $path, $param);
    }
    //获取历史持仓
    static public function openInterestHist($param)
    {
        $path   = '/futures/data/openInterestHist';
        $method = 'GET';
        return self::requestMarket($method, $path, $param);
    }
}