Userverbindung Telegram ist drin

public/telegram/webhook.php

@@ -32,6 +32,66 @@ function telegramWebhookRespond(array $payload, int $statusCode = 200): never
     exit;
 }
 
+function telegramHttpPostJson(string $url, array $payload): bool
+{
+    $jsonPayload = json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+    if ($jsonPayload === false) {
+        return false;
+    }
+
+    if (function_exists('curl_init')) {
+        $ch = curl_init($url);
+        curl_setopt_array($ch, [
+            CURLOPT_POST => true,
+            CURLOPT_RETURNTRANSFER => true,
+            CURLOPT_HTTPHEADER => [
+                'Content-Type: application/json',
+                'Content-Length: ' . strlen($jsonPayload),
+            ],
+            CURLOPT_POSTFIELDS => $jsonPayload,
+            CURLOPT_TIMEOUT => 15,
+        ]);
+
+        $body = curl_exec($ch);
+        curl_close($ch);
+
+        return $body !== false;
+    }
+
+    $context = stream_context_create([
+        'http' => [
+            'method' => 'POST',
+            'header' => implode("\r\n", [
+                'Content-Type: application/json',
+                'Content-Length: ' . strlen($jsonPayload),
+            ]),
+            'content' => $jsonPayload,
+            'timeout' => 15,
+            'ignore_errors' => true,
+        ],
+    ]);
+
+    $body = @file_get_contents($url, false, $context);
+
+    return $body !== false;
+}
+
+function telegramSendBotMessage(array $telegramConfig, string $chatId, string $messageText): void
+{
+    $botToken = trim((string) ($telegramConfig['bot_token'] ?? ''));
+    if ($botToken === '' || $chatId === '' || $messageText === '') {
+        return;
+    }
+
+    telegramHttpPostJson(
+        'https://api.telegram.org/bot' . $botToken . '/sendMessage',
+        [
+            'chat_id' => $chatId,
+            'text' => $messageText,
+        ]
+    );
+}
+
 $expectedSecret = trim((string) ($telegramConfig['webhook_secret'] ?? ''));
 if ($expectedSecret !== '') {
     $providedSecret = (string) ($_SERVER['HTTP_X_TELEGRAM_BOT_API_SECRET_TOKEN'] ?? '');
@@ -102,6 +162,18 @@ $stmtUpdate->execute([
     ':id' => (int) $user['id'],
 ]);
 
+$welcomeName = $telegramUsername !== '' ? '@' . ltrim($telegramUsername, '@') : 'bei Telegram';
+$welcomeMessage = implode("\n", [
+    'Willkommen bei SkyView.',
+    '',
+    'Dein Telegram-Konto wurde erfolgreich mit deinem SkyView-Benutzer verbunden.',
+    'Du kannst jetzt spaeter Hinweise und Inhalte direkt vom Bot erhalten.',
+    '',
+    'Verbunden als: ' . $welcomeName,
+]);
+
+telegramSendBotMessage($telegramConfig, $chatId, $welcomeMessage);
+
 telegramWebhookRespond([
     'ok' => true,
     'status' => 'connected',