fix: back to top button, side navigation

api/chat.php

@@ -122,30 +122,44 @@ $systemPrompt .= "4. Do not make up facts or external projects not listed in the
 $systemPrompt .= "5. Format your output using simple markdown (like bolding or bullet points) to make it readable.\n";
 
 // Map chat history
+// Map chat history and prepend system instructions to the first user message
 $contents = [];
-if (isset($inputData['history']) && is_array($inputData['history'])) {
-    foreach ($inputData['history'] as $msg) {
+$firstMsgPrepended = false;
+
+if (isset($inputData['history']) && is_array($inputData['history']) && !empty($inputData['history'])) {
+    foreach ($inputData['history'] as $index => $msg) {
         if (isset($msg['role']) && isset($msg['text'])) {
             $role = ($msg['role'] === 'user') ? 'user' : 'model';
+            $text = $msg['text'];
+            
+            // Prepend system prompt to the first user message in history
+            if (!$firstMsgPrepended && $role === 'user') {
+                $text = "System Context & Instructions:\n" . $systemPrompt . "\n\nUser Message: " . $text;
+                $firstMsgPrepended = true;
+            }
+            
             $contents[] = [
                 'role' => $role,
-                'parts' => [['text' => $msg['text']]]
+                'parts' => [['text' => $text]]
             ];
         }
     }
 }
-// Add the current user message
+
+// Add the current user message (prepend system instructions if history was empty)
+$currentUserText = $userMessage;
+if (!$firstMsgPrepended) {
+    $currentUserText = "System Context & Instructions:\n" . $systemPrompt . "\n\nUser Message: " . $userMessage;
+}
+
 $contents[] = [
     'role' => 'user',
-    'parts' => [['text' => $userMessage]]
+    'parts' => [['text' => $currentUserText]]
 ];
 
-// Setup request body
+// Setup request body without systemInstruction key
 $requestPayload = [
     'contents' => $contents,
-    'systemInstruction' => [
-        'parts' => [['text' => $systemPrompt]]
-    ],
     'generationConfig' => [
         'temperature' => 0.7,
         'maxOutputTokens' => 800
@@ -153,7 +167,7 @@ $requestPayload = [
 ];
 
 // Call Gemini API via cURL
-$url = "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=" . urlencode($apiKey);
+$url = "https://generativelanguage.googleapis.com/v1/models/gemini-3.5-flash:generateContent?key=" . urlencode($apiKey);
 
 $ch = curl_init($url);
 curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
@@ -161,6 +175,7 @@ curl_setopt($ch, CURLOPT_POST, true);
 curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($requestPayload));
 curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/json']);
 curl_setopt($ch, CURLOPT_TIMEOUT, 15);
+curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 
 $response = curl_exec($ch);
 $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);