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+<?php

+

+declare(strict_types=1);

+

+/*

+ * This file is part of dacore bundle for Contao.

+ *

+ * (c) Benjamin Roth

+ *

+ * @license commercial

+ */

+

+namespace vossmedien\DacoreBundle\Generator;

+

+class CodeGenerator

+{

+    /**

+     * Seed presets

+     */

+    public const SEED_NUMERIC = 1;

+    public const SEED_LETTERS_LOWER = 2;

+    public const SEED_LETTERS_UPPER = 4;

+    public const SEED_SYMBOLS = 8;

+

+    public const SEED_READABLE = 5;

+    public const SEED_LETTERS_MIXED = 6;

+    public const SEED_SECURE = 15;

+

+

+    /**

+     * Generate a code

+     *

+     * @param array $arrOptions

+     * @return string

+     */

+    public function generate($arrOptions = [])

+    {

+        $arrOptions = array_merge

+        (

+            array

+            (

+                'length'      => 12, // ToDo: Retrieve default length from global settings

+                'seed_preset' => self::SEED_SECURE,

+                'custom_seed' => null,

+                'prefix'      => '',

+                'suffix'      => '',

+            ),$arrOptions

+        );

+

+

+        if (intval($arrOptions['length']) < 5)

+        {

+            throw new \InvalidArgumentException('The length option has to be at least 5.');

+        }

+

+        // Seed presets

+        $numbers     = [1,2,3,4,5,6,7,8,9];

+        $lowercase   = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];

+        $uppercase   = ['A','B','C','D','E','F','G','H','J','K','L','M','N','P','Q','R','S','T','U','V','W','X','Y','Z'];

+        $symbols     = ['°','!','§','$','%','&','/','(',')','=','?','*','+','~','#','-','_','.',':',';','>','<','|','[',']','{','}','\\'];

+

+        $seed = [];

+        $code = '';

+

+        // Use custom seed

+        if ($arrOptions['custom_seed'] !== null)

+        {

+            if (is_array($arrOptions['custom_seed']))

+            {

+                $seed = $arrOptions['custom_seed'];

+            } elseif (is_string($arrOptions['custom_seed']))

+            {

+                $seed = str_split($arrOptions['custom_seed'],1);

+            } else {

+                throw new \InvalidArgumentException('The custom_seed option needs to be an array or string.');

+            }

+        } else

+        {

+            // Add numbers to seed

+            if ($arrOptions['seed_preset'] & self::SEED_NUMERIC)

+            {

+                $seed = array_merge($seed, $numbers, $numbers); // add numbers twice to increase their occurrence in generated code

+            }

+

+            // Add lowercase letters to seed

+            if ($arrOptions['seed_preset'] & self::SEED_LETTERS_LOWER)

+            {

+                $seed = array_merge($seed, $lowercase);

+            }

+

+            // Add uppercase letters to seed

+            if ($arrOptions['seed_preset'] & self::SEED_LETTERS_UPPER)

+            {

+                $seed = array_merge($seed, $uppercase);

+            }

+

+            // Add symbols to seed

+            if ($arrOptions['seed_preset'] & self::SEED_SYMBOLS)

+            {

+                $seed = array_merge($seed, $symbols);

+            }

+        }

+

+        // Generate random code string

+        for ($i = 0; $i < intval($arrOptions['length']); $i++) {

+            $code .= substr(strval($seed[mt_rand(0, count($seed) - 1)]),0,1);

+        }

+

+        // Add optional prefix

+        if ($arrOptions['prefix'])

+        {

+            $code = $arrOptions['prefix'].$code;

+        }

+

+        // Add optional suffix

+        if ($arrOptions['suffix'])

+        {

+            $code = $arrOptions['suffix'].$code;

+        }

+

+        return $code;

+    }

+

+}