<?php

namespace Colorfield\Mastodon;

use GuzzleHttp\Client;
use GuzzleHttp\ClientInterface;
use GuzzleHttp\Psr7\Request;
use Psr\Http\Message\ResponseInterface;

/**
 * MastodonAPI
 *
 * PHP version >= 5.6.0
 *
 * @category Third party
 * @package  Mastodon-API-PHP
 * @author   Christophe Jossart <christophe@colorfield.eu>
 * @license  Apache License 2.0
 * @version  Release: <0.0.1>
 * @link     https://github.com/r-daneelolivaw/mastodon-api-php
 */
class MastodonAPI
{
	/** @var \Colorfield\Mastodon\ConfigurationVO */
	private $config;


	/**
	 * Creates the API object.
	 *
	 * @param array $config
	 */
	public function __construct(ConfigurationVO $config)
	{
		$this->client = new Client();

		try {
		    $this->config = $config;
		}catch (\InvalidArgumentException $exception) {
		    print($exception->getMessage());
		}
	}


	/**
	 * Request to an endpoint.
	 *
	 * @param $endpoint
	 * @param array $json
	 *
	 * @return mixed|null
	 */
	private function getResponse($endpoint, $operation, array $json)
	{
		$result = null;
		$uri = $this->config->getBaseUrl() . '/api/';
		$uri .= ConfigurationVO::API_VERSION . $endpoint;

		$allowedOperations = ['get', 'post'];
		if(!in_array($operation, $allowedOperations)) {
		    echo 'ERROR: only ' . implode(',', $allowedOperations) . 'are allowed';
		    return $result;
		}

		try {
		    $response = $this->client->{$operation}($uri, [
		    'headers' => [
		      'Authorization' => 'Bearer ' . $this->config->getBearer(),
		    ],
		    'json' => $json,
		    ]);
		    // @todo $request->getHeader('content-type')
		    if($response instanceof ResponseInterface
		      && $response->getStatusCode() == '200') {
		        $result = json_decode($response->getBody(), true);
		    }else{
		        echo 'ERROR: Status code ' . $response->getStatusCode();
		    }
		    // @todo check thrown exception
		} catch (\Exception $exception) {
		    echo 'ERROR: ' . $exception->getMessage();
		}
		return $result;
	}


	/**
	 * Get operation.
	 *
	 * @param $endpoint
	 * @param array $params
	 *
	 * @return mixed|null
	 */
	public function get($endpoint, array $params = [])
	{
		return $this->getResponse($endpoint, 'get', $params);
	}


	/**
	 * Post operation.
	 *
	 * @param $endpoint
	 * @param array $params
	 *
	 * @return mixed|null
	 */
	public function post($endpoint, array $params = [])
	{
		return $this->getResponse($endpoint, 'post', $params);
	}


	/**
	 * Delete operation.
	 *
	 * @param $endpoint
	 * @param array $params
	 *
	 * @return mixed|null
	 */
	public function delete($endpoint, array $params = [])
	{
	}


	public function stream($endpoint)
	{
	}
}
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