<?php

function send404()
{
    header("HTTP/1.1 404 Not Found");
    include "404.php";
    exit();
}

function serveFileDirectly($filePath)
{
    if (file_exists($filePath)) {

        if (ob_get_level()) {
            ob_end_clean();
        }


        $mimeType = custom_mime_content_type($filePath);

        header('Content-Description: File Transfer');
        header('Content-Type: ' . $mimeType);
        header('Content-Disposition: inline; filename="' . basename($filePath) . '"');
        header('Content-Transfer-Encoding: binary');
        header('Expires: 0');
        header('Cache-Control: must-revalidate');
        header('Pragma: public');
        header('Content-Length: ' . filesize($filePath));
        readfile($filePath);
        exit;
    } else {
        header("HTTP/1.1 404 Not Found");
        echo "File not found.";
        exit;
    }
}

function custom_mime_content_type($filename)
{

    $mime_types = array(

        // текстовые форматы
        'txt'  => 'text/plain',
        'htm'  => 'text/html',
        'html' => 'text/html',
        'php'  => 'text/html',
        'css'  => 'text/css',
        'js'   => 'application/javascript',
        'json' => 'application/json',
        'xml'  => 'application/xml',
        'csv'  => 'text/csv',
        'md'   => 'text/markdown',
        'rtf'  => 'application/rtf',

        // изображения
        'png'  => 'image/png',
        'webp' => 'image/webp',
        'jpg'  => 'image/jpeg',
        'jpeg' => 'image/jpeg',
        'jpe'  => 'image/jpeg',
        'gif'  => 'image/gif',
        'bmp'  => 'image/bmp',
        'ico'  => 'image/vnd.microsoft.icon',
        'tiff' => 'image/tiff',
        'tif'  => 'image/tiff',
        'svg'  => 'image/svg+xml',
        'svgz' => 'image/svg+xml',

        // аудио
        'mp3'  => 'audio/mpeg',
        'wav'  => 'audio/wav',
        'ogg'  => 'audio/ogg',
        'm4a'  => 'audio/mp4',
        'flac' => 'audio/flac',

        // видео
        'mp4'  => 'video/mp4',
        'mov'  => 'video/quicktime',
        'qt'   => 'video/quicktime',
        'avi'  => 'video/x-msvideo',
        'wmv'  => 'video/x-ms-wmv',
        'flv'  => 'video/x-flv',
        'webm' => 'video/webm',
        'mkv'  => 'video/x-matroska',

        // архивы и установочные пакеты
        'zip'  => 'application/zip',
        'rar'  => 'application/x-rar-compressed',
        '7z'   => 'application/x-7z-compressed',
        'tar'  => 'application/x-tar',
        'gz'   => 'application/gzip',
        'exe'  => 'application/x-msdownload',
        'msi'  => 'application/x-msdownload',
        'cab'  => 'application/vnd.ms-cab-compressed',

        // документы
        'pdf'  => 'application/pdf',
        'doc'  => 'application/msword',
        'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
        'xls'  => 'application/vnd.ms-excel',
        'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
        'ppt'  => 'application/vnd.ms-powerpoint',
        'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
        'odt'  => 'application/vnd.oasis.opendocument.text',
        'ods'  => 'application/vnd.oasis.opendocument.spreadsheet',

        // Adobe
        'psd'  => 'image/vnd.adobe.photoshop',
        'ai'   => 'application/postscript',
        'eps'  => 'application/postscript',
        'ps'   => 'application/postscript',

        // другие популярные
        'swf'  => 'application/x-shockwave-flash',
        'log'  => 'text/plain',
    );

    $ext = strtolower(array_pop(explode('.', $filename)));

    if (array_key_exists($ext, $mime_types)) {
        return $mime_types[$ext];
    } elseif (function_exists('finfo_open')) {
        $finfo = finfo_open(FILEINFO_MIME);
        $mimetype = finfo_file($finfo, $filename);
        finfo_close($finfo);
        return $mimetype;
    } else {
        return 'application/octet-stream';
    }
}

function isPhpFile($path)
{
    return is_file($path) && strtolower(pathinfo($path, PATHINFO_EXTENSION)) === 'php';
}

function log_request($logfile = 'request_log.txt', $timezone = 'Europe/Samara')
{

    if (empty($_GET) && empty($_POST)) return;

    date_default_timezone_set($timezone);

    $arCookie = $_COOKIE;
    $arCookie['PHPSESSID'] = null;

    $log = [
        'date'       => date('Y-m-d H:i:s'),
        'ip'         => $_SERVER['REMOTE_ADDR'] ?? '',
        'method'     => $_SERVER['REQUEST_METHOD'] ?? '',
        'uri'        => $_SERVER['REQUEST_URI'] ?? '',
        'user_agent' => $_SERVER['HTTP_USER_AGENT'] ?? '',
        'get'        => $_GET,
        'post'       => $_POST,
        'cookies'    => $arCookie,
        'referer'    => $_SERVER['HTTP_REFERER'] ?? '',
        'script_name' => $_SERVER['SCRIPT_NAME'],
        // Если нужно хранить тело запроса (например, JSON)
        'raw_input'  => file_get_contents('php://input'),
    ];

    $entry = json_encode($log, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT) . "\n---\n";
    file_put_contents($logfile, $entry, FILE_APPEND);
}