<?php

namespace AdScale\API;

use AdScale\Helpers\Logger;

defined( 'ABSPATH' ) || exit; // Exit if accessed directly

class API_Request {

    private $options = [];

    /**
     * Initialize the request options.
     *
     * @param array $options An array specifying request options.
     */
    public function init( $options ) {
        $default_options = [
            'method'      => 'GET',
            'timeout'     => 15,
            'redirection' => 10,
            'blocking'    => true,
            'headers'     => [
                'Accept-Charset' => 'charset=utf-8',
                'Content-Type'   => 'application/json',
            ],
            'body'        => null,
            'cookies'     => [],
            'sslverify'   => false, // Equivalent to CURLOPT_SSL_VERIFYPEER => false
        ];

        // Merge provided options with defaults
        $this->options = wp_parse_args( $options, $default_options );
    }

    /**
     * Execute the HTTP request.
     *
     * @return array ['headers_raw', 'body_raw', 'body', 'error', 'http_code', 'last_url']
     */
    public function exec( $url ) {

        $response = wp_remote_request( $url, $this->options );

        $result = [
            'headers_raw' => '',
            'body_raw'    => '',
            'body'        => '',
            'error'       => '',
            'http_code'   => '',
            'last_url'    => $url,
        ];

        if ( is_wp_error( $response ) ) {
            $result['error'] = $response->get_error_message();
            return $result;
        }

        // Retrieve headers
        $result['headers_raw'] = wp_remote_retrieve_headers( $response );

        // Retrieve body
        $result['body_raw'] = wp_remote_retrieve_body( $response );
        $result['body']     = self::may_be_json( $result['body_raw'] );

        // Retrieve HTTP status code
        $result['http_code'] = wp_remote_retrieve_response_code( $response );

        Logger::log( $result, 'response >>', 'api_request' );

        return $result;
    }

    /**
     * Check if the string is a valid JSON and optionally return decoded data.
     *
     * @param string $string
     * @param bool $return_decoded
     *
     * @return mixed
     */
    public static function may_be_json( $string, $return_decoded = true ) {
        $decoded = json_decode( $string, true );
        if ( $return_decoded ) {
            return ( json_last_error() === JSON_ERROR_NONE ) ? $decoded : $string;
        }
        return json_last_error() === JSON_ERROR_NONE;
    }
}