<?php

namespace IQParts\Content;

/**
 * Class MimeDetector
 * @package IQParts\Framework\Content
 */
final class MimeDetector
{
    /**
     * @var
     */
    private $mimeTypes;

    /**
     * Factory constructor.
     * @param array $extraMimes
     */
    public function __construct(array $extraMimes = [])
    {
        $this->mimeTypes = array_merge(
            [
                'doc' => 'application/msword',
                'dot' => 'application/msword',
                'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
                'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
                'docm' => 'application/vnd.ms-word.document.macroEnabled.12',
                'dotm' => 'application/vnd.ms-word.template.macroEnabled.12',
                'xls' => 'application/vnd.ms-excel',
                'xlt' => 'application/vnd.ms-excel',
                'xla' => 'application/vnd.ms-excel',
                'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
                'xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template',
                'xlsm' => 'application/vnd.ms-excel.sheet.macroEnabled.12',
                'xltm' => 'application/vnd.ms-excel.template.macroEnabled.12',
                'xlam' => 'application/vnd.ms-excel.addin.macroEnabled.12',
                'xlsb' => 'application/vnd.ms-excel.sheet.binary.macroEnabled.12',
                'ppt' => 'application/vnd.ms-powerpoint',
                'pot' => 'application/vnd.ms-powerpoint',
                'pps' => 'application/vnd.ms-powerpoint',
                'ppa' => 'application/vnd.ms-powerpoint',
                'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
                'potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template',
                'ppsx' => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow',
                'ppam' => 'application/vnd.ms-powerpoint.addin.macroEnabled.12',
                'pptm' => 'application/vnd.ms-powerpoint.presentation.macroEnabled.12',
                'potm' => 'application/vnd.ms-powerpoint.template.macroEnabled.12',
                'ppsm' => 'application/vnd.ms-powerpoint.slideshow.macroEnabled.12',
                'mdb' => 'application/vnd.ms-access',
                'aac' => 'audio/aac',
                'abw' => 'application/x-abiword',
                'arc' => 'application/octet-stream',
                'avi' => 'video/x-msvideo',
                'azw' => 'application/vnd.amazon.ebook',
                'bin' => 'application/octet-stream',
                'bz' => 'application/x-bzip',
                'bz2' => 'application/x-bzip2',
                'csh' => 'application/x-csh',
                'css' => 'text/css',
                'csv' => 'text/csv',
                'eot' => 'application/vnd.ms-fontobject',
                'epub' => 'application/epub+zip',
                'gif' => 'image/gif',
                'htm' => 'text/html',
                'html' => 'text/html',
                'twig' => 'text/html',
                'ico' => 'image/x-icon',
                'ics' => 'text/calendar',
                'jar' => 'application/java-archive',
                'jpeg' => 'image/jpeg',
                'jpg' => 'image/jpg',
                'js' => 'application/javascript',
                'json' => 'application/json',
                'mid' => 'audio/midi',
                'midi' => 'audio/midi',
                'mpeg' => 'video/mpeg',
                'mpkg' => 'application/vnd.apple.installer+xml',
                'odp' => 'application/vnd.oasis.opendocument.presentation',
                'ods' => 'application/vnd.oasis.opendocument.spreadsheet',
                'odt' => 'application/vnd.oasis.opendocument.text',
                'oga' => 'audio/ogg',
                'ogv' => 'video/ogg',
                'ogx' => 'application/ogg',
                'otf' => 'font/otf',
                'png' => 'image/png',
                'pdf' => 'application/pdf',
                'rar' => 'application/x-rar-compressed',
                'rtf' => 'application/rtf',
                'sh' => 'application/x-sh',
                'svg' => 'image/svg+xml',
                'swf' => 'application/x-shockwave-flash',
                'tar' => 'application/x-tar',
                'tif' => 'image/tiff',
                'tiff' => 'image/tiff',
                'ts' => 'application/typescript',
                'txt' => 'text/plain',
                'ttf' => 'font/ttf',
                'vsd' => 'application/vnd.visio',
                'wav' => 'audio/x-wav',
                'weba' => 'audio/webm',
                'webm' => 'video/webm',
                'webp' => 'image/webp',
                'woff' => 'font/woff',
                'woff2' => 'font/woff2',
                'xhtml' => 'application/xhtml+xml',
                'xml' => 'application/xml',
                'xul' => 'application/vnd.mozilla.xul+xml',
                'zip' => 'application/zip',
                '3gp' => 'video/3gpp',
                '3g2' => 'video/3gpp2',
                '7z' => 'application/x-7z-compressed'
            ],
            $extraMimes
        );
    }

    /**
     * @param string $filename
     * @return string
     */
    public function detectFromExtension(string $filename): string
    {
        return $this->mimeTypes[$this->getExtension($filename)] ?? 'text/plain';
    }

    /**
     * @param string $filename
     * @return bool
     */
    public function isText(string $filename): bool
    {
        $mime = $this->detectFromExtension($filename);
        if (fnmatch('text/*', $mime)) {
            return true;
        }

        $text = [
            "application/javascript" => true,
            "application/rtf" => true,
            "application/json" => true,
            "application/x-sh" => true,
            "application/xml" => true
        ];
        return isset($text[$mime]);
    }

    /**
     * @param $filename
     * @return string
     */
    private function getExtension($filename): string
    {
        $file = basename($filename);
        $dotPlace = strrpos($file, '.');
        if ($dotPlace === false) {
            return $file;
        }
        return substr($file, $dotPlace + 1);
    }

}