<?php

namespace App\Lib;

use App\Enums\MediaExtension;
use getID3;
use Illuminate\Support\Str;
use Imagick;
use ImagickException;

class ToolboxHelper
{
    /**
     * Get ID3 Play time string
     *
     * @param string $filepath
     * @return string|null
     */
    public static function getId3Playtime(string $filepath): ?string
    {
        $getID3 = new getID3();

        $results = $getID3->analyze($filepath);

        if (array_key_exists('error', $results)) {
            return null;
        }
        if (array_key_exists('playtime_string', $results)) {
            return \strval($results['playtime_string']);
        }
        return null;
    }

    /**
     * Get ID3 video dimensions
     *
     * @param string $filepath
     * @return array|null Containing 'width' and 'height'
     */
    public static function getId3VideoDimensions(string $filepath): ?array
    {
        $getID3 = new getID3();

        $results = $getID3->analyze($filepath);

        if (array_key_exists('error', $results)) {
            return null;
        }
        if (isset($results['video']['resolution_x']) and isset($results['video']['resolution_y'])) {
            return [
                'width' => \intval($results['video']['resolution_x']),
                'height' => \intval($results['video']['resolution_y'])
            ];
        }
        return null;
    }

    /**
     * resolution in pixels per centimeter
     *
     * @param string $filepath
     * @return array|null Containing 'resolutionX', 'resolutionY', 'width' and 'height'
     */
    public static function getImageDimensions(string $filepath): ?array
    {
        $ext = \pathinfo($filepath, \PATHINFO_EXTENSION);
        try {
            $im = new Imagick($filepath);
            if (
                in_array($ext, [
                    MediaExtension::pdf->value,
                    MediaExtension::ai->value,
                    MediaExtension::psd->value,
                    MediaExtension::gif->value
                ])
            ) {
                $im->setIteratorIndex(0);
            }

            $r = $im->getImageResolution();
            $u = $im->getImageUnits();

            // Force image resolution to pixel per centimeters.
            if ($u == Imagick::RESOLUTION_PIXELSPERINCH) {
                $r['x'] = (int)round($r['x'] / 2.54);
                $r['y'] = (int)round($r['y'] / 2.54);
                $im->setImageUnits(Imagick::RESOLUTION_PIXELSPERCENTIMETER);
                $im->setImageResolution($r['x'], $r['y']);

                // Note that the number type is double again.
                $r = $im->getImageResolution();
            }

            $imageprops = $im->getImageGeometry();
            $im->destroy();
            return [
                'resolutionX' => \intval($r['x']),
                'resolutionY' => \intval($r['y']),
                'width' => \intval($imageprops['width']),
                'height' => \intval($imageprops['height'])
            ];
        } catch (ImagickException $e) {
            report($e);
        } //end try
        return null;
    }

    /**
     * Sanitize File name for uploaded files
     *
     * @param string  $filename The original uploaded client file name.
     * @param boolean $beautify Beautify the filename.
     * @return string The sanitized file name.
     */
    public static function sanitizeFileName(string $filename, bool $beautify = true): string
    {
        // * Sanitize filename
        // phpcs:disable Generic.Files.LineLength.TooLong
        $filename = preg_replace(
            '~
            [<>:"/\\\|?*]|            # file system reserved https://en.wikipedia.org/wiki/Filename#Reserved_characters_and_words
            [\x00-\x1F]|             # control characters http://msdn.microsoft.com/en-us/library/windows/desktop/aa365247%28v=vs.85%29.aspx
            [\x7F\xA0\xAD]|          # non-printing characters DEL, NO-BREAK SPACE, SOFT HYPHEN
            [#\[\]@!$&\'()+,;=]|     # URI reserved https://tools.ietf.org/html/rfc3986#section-2.2
            [{}^\~`]                 # URL unsafe characters https://www.ietf.org/rfc/rfc1738.txt
            ~x',
            '-',
            $filename
        );
        // phpcs:enable
        // * Avoids '.' '..' or '.hiddenFiles' .
        $filename = Str::of($filename)->ltrim('.-');
        // * Optional beautification
        if ($beautify) {
            $filename = static::beautifyFilename($filename);
        }
        // * Maximize filename length to 255 bytes http://serverfault.com/a/9548/44086
        /** @var string */
        $extension = pathinfo($filename, \PATHINFO_EXTENSION);
        /** @var string */
        $filename = pathinfo($filename, \PATHINFO_FILENAME);

        $encoding = mb_detect_encoding($filename);
        $encoding = $encoding ? $encoding : null;
        return \mb_strcut(
            $filename,
            0,
            255 - (!empty($extension) ? strlen($extension) + 1 : 0),
            $encoding
        ) . (!empty($extension) ? ".$extension" : '');
    }

    /**
     * Beautify a filename
     *
     * @param string $filename
     * @return string
     */
    private static function beautifyFilename(string $filename): string
    {
        // Reduce consecutive characters.
        $filename = preg_replace([
            // * "file   name.zip" becomes 'file-name.zip'
            '/ +/',
            // * "file___name.zip" becomes 'file-name.zip'
            '/_+/',
            // * "file---name.zip" becomes 'file-name.zip'
            '/-+/'
        ], '-', $filename);
        $filename = preg_replace([
            // * "file--.--.-.--name.zip" becomes "file.name.zip"
            '/-*\.-*/',
            // * "file...name..zip" becomes "file.name.zip"
            '/\.{2,}/'
        ], '.', $filename);
        // Lowercase for windows/unix interoperability http://support.microsoft.com/kb/100625 .
        $filename = mb_strtolower($filename, mb_detect_encoding($filename));
        // * ".file-name.-" becomes "file-name"
        $filename = trim($filename, '.-');
        return $filename;
    }

    /**
     * Convert file size to human readable string
     *
     * @param mixed   $octet
     * @param integer $precision
     * @return string
     */
    public static function formatBytes(mixed $octet, int $precision = 2): string
    {
        // * Array contenant les differents unités
        $unite = ['octet', 'Kio', 'Mio', 'Gio'];

        $octet = \floatval($octet);

        $Kio = 1024;
        $Mio = 1024 * $Kio;
        $Gio = 1024 * $Mio;

        switch (true) {
                // * octet
            case $octet < $Kio:
                return $octet . $unite[0];
                // * kio
            case $octet < $Mio:
                return $octet . $unite[1];
                // * Mio
            case $octet < $Gio:
                return \round($octet / $Mio, $precision) . $unite[2];
                // * Gio
            default:
                // * Gio
                return \round($octet / $Gio, $precision) . $unite[3];
        }
    }

    /**
     * * Register CSP report URI
     *
     * Put this function inside RouteServiceProvider,
     * and call it in RouteServiceProvider::boot
     *
     * ! Use this in conjonction with kwaadpepper/exception-handler
     *
     * @return void
     */
    public static function cspReportRoute()
    {
        // * CSP REPORT URI, Please add /csp-report to VerifyCsrfToken $except middleware
        \Illuminate\Support\Facades\Route::post('/csp-report', function () {
            $isCspRequest = request()->header('Content-Type') === 'application/csp-report';
            if (!$isCspRequest or !request()->json('csp-report') or !is_array(request()->json('csp-report'))) {
                abort(401);
            }
            // * Flatten if needed
            $cspReport = collect(request()->json('csp-report'))
                ->flatMap(function ($v, $k) {
                    return [$k => is_array($v) ? collect($v)->flatten()->implode(', ') : $v];
                })->all();
            // * Filter array keys
            $cspReport = collect(array_intersect_key($cspReport, [
                'blocked-uri' => '', 'document-uri' => '', 'original-policy' => '',
                'referrer' => '', 'violated-directive' => ''
            ]));
            report(new \Illuminate\Http\Client\HttpClientException(sprintf(
                "CSP REPORT for %s : \n %s",
                $cspReport->get('document-uri'),
                $cspReport->implode("\n")
            )));
        })->middleware('throttle:5,2')
            ->withoutMiddleware(\App\Http\Middleware\VerifyCsrfToken::class)
            ->name('cspReportUri');
    }
}