<?php
/**
 * ApiException
 * PHP version 5
 *
 * @category Class
 * @package  Swagger\Client
 * @author   Swagger Codegen team
 * @link     https://github.com/swagger-api/swagger-codegen
 */

/**
 * BitMEX API
 *
 * ## REST API for the BitMEX Trading Platform  _If you are building automated tools, please subscribe to the_ _[BitMEX API RSS Feed](https://blog.bitmex.com/api_announcement/feed/) for changes. The feed will be updated_ _regularly and is the most reliable way to get downtime and update announcements._  [View Changelog](/app/apiChangelog)  -  #### Getting Started  Base URI: [https://www.bitmex.com/api/v1](/api/v1)  ##### Fetching Data  All REST endpoints are documented below. You can try out any query right from this interface.  Most table queries accept `count`, `start`, and `reverse` params. Set `reverse=true` to get rows newest-first.  Additional documentation regarding filters, timestamps, and authentication is available in [the main API documentation](/app/restAPI).  _All_ table data is available via the [Websocket](/app/wsAPI). We highly recommend using the socket if you want to have the quickest possible data without being subject to ratelimits.  ##### Return Types  By default, all data is returned as JSON. Send `?_format=csv` to get CSV data or `?_format=xml` to get XML data.  ##### Trade Data Queries  _This is only a small subset of what is available, to get you started._  Fill in the parameters and click the `Try it out!` button to try any of these queries.  - [Pricing Data](#!/Quote/Quote_get)  - [Trade Data](#!/Trade/Trade_get)  - [OrderBook Data](#!/OrderBook/OrderBook_getL2)  - [Settlement Data](#!/Settlement/Settlement_get)  - [Exchange Statistics](#!/Stats/Stats_history)  Every function of the BitMEX.com platform is exposed here and documented. Many more functions are available.  ##### Swagger Specification  [⇩ Download Swagger JSON](swagger.json)  -  ## All API Endpoints  Click to expand a section.
 *
 * OpenAPI spec version: 1.2.0
 * Contact: support@bitmex.com
 * Generated by: https://github.com/swagger-api/swagger-codegen.git
 * Swagger Codegen version: 2.4.42-SNAPSHOT
 */

/**
 * NOTE: This class is auto generated by the swagger code generator program.
 * https://github.com/swagger-api/swagger-codegen
 * Do not edit the class manually.
 */

namespace Swagger\Client;

use \Exception;

/**
 * ApiException Class Doc Comment
 *
 * @category Class
 * @package  Swagger\Client
 * @author   Swagger Codegen team
 * @link     https://github.com/swagger-api/swagger-codegen
 */
class HeaderSelector
{

    /**
     * @param string[] $accept
     * @param string[] $contentTypes
     * @return array
     */
    public function selectHeaders($accept, $contentTypes)
    {
        $headers = [];

        $accept = $this->selectAcceptHeader($accept);
        if ($accept !== null) {
            $headers['Accept'] = $accept;
        }

        $headers['Content-Type'] = $this->selectContentTypeHeader($contentTypes);
        return $headers;
    }

    /**
     * @param string[] $accept
     * @return array
     */
    public function selectHeadersForMultipart($accept)
    {
        $headers = $this->selectHeaders($accept, []);

        unset($headers['Content-Type']);
        return $headers;
    }

    /**
     * Return the header 'Accept' based on an array of Accept provided
     *
     * @param string[] $accept Array of header
     *
     * @return string Accept (e.g. application/json)
     */
    private function selectAcceptHeader($accept)
    {
        if (count($accept) === 0 || (count($accept) === 1 && $accept[0] === '')) {
            return null;
        } elseif (preg_grep("/application\/json/i", $accept)) {
            return 'application/json';
        } else {
            return implode(',', $accept);
        }
    }

    /**
     * Return the content type based on an array of content-type provided
     *
     * @param string[] $contentType Array fo content-type
     *
     * @return string Content-Type (e.g. application/json)
     */
    private function selectContentTypeHeader($contentType)
    {
        if (count($contentType) === 0 || (count($contentType) === 1 && $contentType[0] === '')) {
            return 'application/json';
        } elseif (preg_grep("/application\/json/i", $contentType)) {
            return 'application/json';
        } else {
            return implode(',', $contentType);
        }
    }
}
