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vendor/php-flasher/flasher/Http/RequestExtension.php

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+<?php
+
+/*
+ * This file is part of the PHPFlasher package.
+ * (c) Younes KHOUBZA <younes.khoubza@gmail.com>
+ */
+
+namespace Flasher\Prime\Http;
+
+use Flasher\Prime\FlasherInterface;
+
+final class RequestExtension
+{
+    /**
+     * @var FlasherInterface
+     */
+    private $flasher;
+
+    /**
+     * @var array<string, string>
+     */
+    private $mapping;
+
+    /**
+     * @param array<string, string[]> $mapping
+     */
+    public function __construct(FlasherInterface $flasher, array $mapping = array())
+    {
+        $this->flasher = $flasher;
+        $this->mapping = $this->flatMapping($mapping);
+    }
+
+    /**
+     * @return ResponseInterface
+     */
+    public function flash(RequestInterface $request, ResponseInterface $response)
+    {
+        if (!$request->hasSession()) {
+            return $response;
+        }
+
+        foreach ($this->mapping as $alias => $type) {
+            if (false === $request->hasType($alias)) {
+                continue;
+            }
+
+            $messages = (array) $request->getType($alias);
+
+            foreach ($messages as $message) {
+                $this->flasher->addFlash($type, $message);
+            }
+
+            $request->forgetType($alias);
+        }
+
+        return $response;
+    }
+
+    /**
+     * @param array<string, string[]> $mapping
+     *
+     * @return array<string, string>
+     */
+    private function flatMapping(array $mapping)
+    {
+        $flatMapping = array();
+
+        foreach ($mapping as $type => $aliases) {
+            foreach ($aliases as $alias) {
+                $flatMapping[$alias] = $type;
+            }
+        }
+
+        return $flatMapping;
+    }
+}