<?php

namespace app\Providers;

/**
 * Description of WebHeader
 *
 * @author Lucas Awade
 */
class WebHeader
{

    /** @class support headers * */
    private $headers = [
        "Access-Control-Allow-Headers",
        "Access-Control-Allow-Methods",
        "Access-Control-Allow-Origin",
        "Cache-Control",
        "Connection",
        "Content-Description",
        "Content-Disposition",
        "Content-Length",
        "Access-Control-Max-Age",
        "Content-Transfer-Encoding",
        "Content-Type",
        "Expires",
        "Pragma",
        "Location"
    ];

    /** @codes https://http.cat/ * */
    const HTTP_CODE_RESPONSE = [
        100 => 'Continue',
        101 => 'Switching Protocols',
        102 => 'Processing',
        200 => 'OK',
        201 => 'Created',
        202 => 'Accepted',
        204 => 'No Content',
        206 => 'Partial Content',
        207 => 'Multi-Status',
        300 => 'Multiple Choices',
        301 => 'Moves Permanently',
        302 => 'Found',
        303 => 'See Other',
        304 => 'Not Modified',
        305 => 'Use Proxy',
        307 => 'Temporary Redirect',
        308 => 'Permanent Redirect',
        400 => 'Bad Request',
        401 => 'Unauthorized',
        402 => 'Payment Required',
        403 => 'Forbidden',
        404 => 'Not Found',
        405 => 'Method Not Allowed',
        406 => 'Not Acceptable',
        408 => 'Request Timeout',
        409 => 'Conflict',
        410 => 'Gone',
        411 => 'Length Required',
        412 => 'Precondition Failed',
        413 => 'Payload Too Large',
        414 => 'Request-URI Too Long',
        415 => 'Unsupported Media Type',
        416 => 'Request Range Not Satisfiable',
        417 => 'Expectation Failed',
        418 => 'Im a teapot',
        420 => 'Enhance Your Calm',
        421 => 'Misdirected Request',
        422 => 'Unprocessable Entity',
        423 => 'Locked',
        424 => 'Failed Dependency',
        425 => 'Too Early',
        426 => 'Upgrade Required',
        429 => 'Too Many Requests',
        431 => 'Request Header Fields Too Large',
        444 => 'No Response',
        450 => 'Blocked by Windows Parental Controls',
        451 => 'Unavailable For Legal Reasons',
        499 => 'Client Closed Request',
        500 => 'Internal Server Error',
        501 => 'Not Implemented',
        502 => 'Bad Gateway',
        503 => 'Service Unavailable',
        504 => 'Gateway Timeout',
        506 => 'Variant Also Negotiates',
        507 => 'Insufficient Storage',
        508 => 'Loop Detected',
        509 => 'Bandwidth Limit Exceeded',
        510 => 'Not Extended',
        511 => 'Network Authentication Required',
        599 => 'Network Connect Timeout Error'
    ];

    /**
     * This variable set methods to use headers
     * @var $methods
     */
    private $methods = [];

    /**
     * This variable for logs
     * @var $log
     */
    private $log;

    /**
     * This variable for set new configs.
     * @var $config
     */
    private $config;

    ########################################################################
    #####                        CLASS METHODS                         #####
    ########################################################################

    function __construct($config = null)
    {
        $this->config($config);
        $this->blockRequest();
    }

    public function config($config)
    {
        if ($config) {
            foreach ($config as $key => $val) {
                $this->config[strtoupper($key)] = $val;
            }
        }
        return $this->config;
    }

    public function API($contentType)
    {
        $this->methods([
            "Access-Control-Allow-Origin" => ['*'],
            "Content-Type" => $contentType,
            "Access-Control-Allow-Methods" => ['GET', 'POST', 'PUT', 'DELETE'],
            "Access-Control-Max-Age" => 0,
            "Access-Control-Allow-Headers" => ['Origin', 'X-Requested-With', 'Content-Type', 'Accept', 'Authorization']
        ]);
        $this->bootstrap();
    }

    public function response($code)
    {
        if (array_key_exists($code, self::HTTP_CODE_RESPONSE)) {
            header("HTTP/1.0 {$code} " . self::HTTP_CODE_RESPONSE[$code]);
        }
    }

    public function redirect($url = null)
    {
        // $redirect = ($url ? $url : $this->config['REDIRECT']);
        // if (strpos('http://', $redirect) === false && strpos('https://', $redirect) === false) {
        //     $redirect = "http://$redirect";
        // }
        $redirect = $url ? $url : CONF_MIDDLEWARE_REDIRECT;
        $this->methods([
            "Location" => ($redirect)
        ]);
        $this->bootstrap();
    }

    public function fileTransfer($name, $file, $mimetype)
    {
        //logger('logggeeeee')->info(basename($name . "." . explode('/', $mimetype)[1]));
        $this->methods([
            "Content-Description" => 'File Transfer',
            "Content-Transfer-Encoding" => "binary",
            "Content-Type" => $mimetype,
            "Cache-Control" => "must-revalidate",
            "Content-Length" => filesize($file),
            "Content-Disposition" => "attachment; filename=" . basename($name . "." . explode('/', $mimetype)[1]),
            "Expires" => 0,
            "Connection" => 'close',
            "Pragma" => 'public'
        ]);
        $this->bootstrap();
        ob_end_clean();
        ob_start();
        readfile($file);
        ob_flush();
    }

    ########################################################################
    #####                       PRIVATE METHODS                        #####
    ########################################################################

    private function bootstrap($header = null)
    {
        if (!$header && !$this->getMethods()) {
            return null;
        }
        foreach ($header as $key => $val) {
            if (!in_array($key, $this->headers)) {
                array_push($this->headers, $key);
            }
        }

        $this->methods($header);
        $this->headers();
        $this->clean();
    }

    private function blockRequest()
    {
        if ($this->config['BLOCK_REQUEST']) {
            if (is_array($this->config['BLOCK_REQUEST'])) {
                if (in_array($_SERVER['REMOTE_ADDR'], $this->config['BLOCK_REQUEST'])) {
                    $this->log->info("BLOCK REQUEST: " . $_SERVER['REMOTE_ADDR']);
                    $this->response(301);
                    $this->redirect(($this->config['REDIRECT'] ? $this->config['REDIRECT'] : 'index.php'));
                    exit(0);
                }
            } else if ($_SERVER['REMOTE_ADDR'] == $this->config['BLOCK_REQUEST']) {
                $this->log->info("BLOCK REQUEST: " . $_SERVER['REMOTE_ADDR']);
                $this->response(301);
                $this->redirect($this->config['REDIRECT']);
                exit(0);
            }
        }
    }

    private function headers()
    {
        foreach ($this->methods as $key => $header) {
            if (in_array($key, $this->headers)) {
                header("{$key}: {$header}");
            }
        }
    }

    private function methods($header)
    {
        foreach ($header as $key => $val) {
            $method = str_replace(' ', '-', ucwords(str_replace('-', ' ', $key)));
            if (is_array($val)) {
                $this->methods[$method] = implode(',', $val);
            } else {
                $this->methods[$method] = $val;
            }
        }
    }

    private function clean()
    {
        unset($this->methods);
    }

    ########################################################################
    #####                       GETS AND SETTERS                       #####
    ########################################################################

    function getMethods()
    {
        return $this->methods;
    }
}