Implement Gemini audio voice note replies

backend/public/test_audio.php

@@ -0,0 +1,88 @@
+<?php
+// Secure token check to prevent unauthorized execution on production
+if (($_GET['token'] ?? '') !== 'nabeh_test_audio_1298') {
+    http_response_code(403);
+    die('Unauthorized access');
+}
+
+require_once dirname(__DIR__) . '/app/bootstrap.php';
+
+use App\Services\GeminiService;
+use App\Models\ChatbotRule;
+use App\Core\Database;
+
+header('Content-Type: text/plain; charset=utf-8');
+
+echo "=== Starting Chatbot Audio Reply Diagnostics ===\n\n";
+
+// 1. Fetch Chatbot Rules and check for Gemini Key
+$rules = Database::select("SELECT * FROM chatbot_rules WHERE trigger_type = 'gemini_ai' AND is_active = 1 LIMIT 1");
+if (empty($rules)) {
+    echo "❌ [Database] No active chatbot rule found with 'gemini_ai' trigger type.\n";
+    exit(1);
+}
+
+$rule = $rules[0];
+$apiKey = $rule['gemini_api_key'] ?: getenv('GEMINI_API_KEY');
+
+if (empty($apiKey)) {
+    echo "❌ [Config] Gemini API Key is empty. Please set gemini_api_key in the active chatbot rule or GEMINI_API_KEY in the .env file.\n";
+    exit(1);
+}
+
+echo "✅ [Database] Found active Gemini rule for Company ID: {$rule['company_id']}\n";
+echo "ℹ️ [Config] Gemini API Key starts with: " . substr($apiKey, 0, 6) . "...\n";
+
+// 2. Test Gemini API Audio Output (Puck Voice, gemini-flash-lite-latest)
+echo "\n--- Testing Gemini Audio Response ---\n";
+$systemPrompt = "You are a friendly customer service assistant. Speak in a warm, welcoming tone.";
+$testMsg = "مرحبا، هل متجركم مفتوح اليوم؟";
+
+echo "Sending text prompt: '$testMsg'\n";
+$startTime = microtime(true);
+$audioResponse = GeminiService::generateAudioResponse($apiKey, $systemPrompt, $testMsg, 'Puck');
+$elapsedTime = round(microtime(true) - $startTime, 2);
+
+if ($audioResponse && !empty($audioResponse['audio'])) {
+    echo "✅ [Gemini] Successfully generated voice note in {$elapsedTime} seconds!\n";
+    echo "ℹ️ [Gemini] Audio MimeType: " . $audioResponse['mimeType'] . "\n";
+    echo "ℹ️ [Gemini] Audio Size: " . strlen($audioResponse['audio']) . " base64 chars\n";
+    
+    // 3. Test Audio-to-Audio conversion
+    echo "\n--- Testing Audio-to-Audio (Speech-to-Speech) ---\n";
+    $startTime = microtime(true);
+    $audioResponse2 = GeminiService::generateAudioResponseFromAudio($apiKey, $systemPrompt, $audioResponse['audio'], $audioResponse['mimeType'], 'Puck');
+    $elapsedTime2 = round(microtime(true) - $startTime, 2);
+    
+    if ($audioResponse2 && !empty($audioResponse2['audio'])) {
+        echo "✅ [Gemini] Successfully generated Audio-to-Audio response in {$elapsedTime2} seconds!\n";
+        echo "ℹ️ [Gemini] Audio MimeType: " . $audioResponse2['mimeType'] . "\n";
+        echo "ℹ️ [Gemini] Audio Size: " . strlen($audioResponse2['audio']) . " base64 chars\n";
+    } else {
+        echo "❌ [Gemini] Audio-to-Audio generation failed. Check errors below:\n";
+    }
+} else {
+    echo "❌ [Gemini] Audio response generation failed. Please check the logs.\n";
+}
+
+// 4. Check Node.js WhatsApp Gateway Status
+echo "\n--- Checking Node.js Gateway Status ---\n";
+$gatewayUrl = rtrim(getenv('WHATSAPP_GATEWAY_URL') ?: 'http://localhost:3722', '/');
+echo "Gateway URL: {$gatewayUrl}\n";
+
+$ch = curl_init($gatewayUrl . '/health');
+curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+curl_setopt($ch, CURLOPT_TIMEOUT, 5);
+$healthResponse = curl_exec($ch);
+$healthHttpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+$healthError = curl_error($ch);
+curl_close($ch);
+
+if ($healthHttpCode === 200) {
+    echo "✅ [Gateway] Gateway is ONLINE and healthy.\n";
+    echo "ℹ️ [Gateway] Response: {$healthResponse}\n";
+} else {
+    echo "❌ [Gateway] Gateway is OFFLINE or returning error. HTTP Code: {$healthHttpCode}. Error: {$healthError}\n";
+}
+
+echo "\n=== Diagnostics Complete ===\n";