✨ Add Request and validation

bot/Request.php

@@ -2,7 +2,54 @@
 
 namespace Shikiryu\Bot;
 
+use JsonException;
+
 class Request
 {
+    public string $nc_signature;
+    public string $nc_random;
+    public string $nc_server;
+    public string $delivery;
+    public string $event;
+    public string $signature;
+    public string $body;
 
+    public function __construct()
+    {
+        $this->nc_signature = $_SERVER['HTTP_X_NEXTCLOUD_TALK_SIGNATURE'] ?? '';
+        $this->nc_random = $_SERVER['HTTP_X_NEXTCLOUD_TALK_RANDOM'] ?? '';
+        $this->nc_server = $_SERVER['HTTP_X_NEXTCLOUD_TALK_BACKEND'] ?? '';
+
+        $this->delivery = $_SERVER['HTTP_X_H1_DELIVERY'] ?? '';
+        $this->event = $_SERVER['HTTP_X_H1_EVENT'] ?? '';
+        $this->signature = $_SERVER['HTTP_X_H1_SIGNATURE'] ?? '';
+        $this->body = file_get_contents('php://input');
+    }
+
+    public function getJSONBody(): array
+    {
+        try {
+            return json_decode($this->body, true, 512, JSON_THROW_ON_ERROR);
+        } catch (JsonException $e) {
+            return [];
+        }
+    }
+
+    public function isMessage(): bool
+    {
+        $data = $this->getJSONBody();
+        return $data['type'] === 'Create' &&
+            $data['object']['name'] === 'message' &&
+            !empty($data['object']['content']);
+    }
+
+    public function getMessage(): string
+    {
+        try {
+            $data = $this->getJSONBody();
+            return json_decode($data['object']['content'], true, 512, JSON_THROW_ON_ERROR)['message'];
+        } catch (JsonException $e) {
+            return '';
+        }
+    }
 }