Phase 4: Support LID identity scheme and fix incoming message parsing

backend/app/Controllers/ChatbotController.php

@@ -0,0 +1,75 @@
+<?php
+
+namespace App\Controllers;
+
+use App\Core\Request;
+use App\Core\Response;
+use App\Models\ChatbotRule;
+
+class ChatbotController extends BaseController
+{
+    /**
+     * Get chatbot rules for the company
+     */
+    public function index(Request $request, Response $response)
+    {
+        $rules = ChatbotRule::findAllByCompany($request->company_id);
+        
+        $response->json([
+            'status' => 'success',
+            'data' => $rules
+        ]);
+    }
+
+    /**
+     * Store or update a chatbot rule
+     */
+    public function store(Request $request, Response $response)
+    {
+        $errors = $this->validate($request, [
+            'trigger_type' => 'required',
+            'is_active' => 'required'
+        ]);
+
+        if (!empty($errors)) {
+            $response->status(400)->json(['status' => 'error', 'errors' => $errors]);
+            return;
+        }
+
+        $body = $request->getBody();
+        
+        // Find existing rule or create one
+        $rules = ChatbotRule::findAllByCompany($request->company_id);
+        $ruleId = null;
+        if (!empty($rules)) {
+            $ruleId = $rules[0]['id'];
+        }
+
+        $saveData = [
+            'company_id' => $request->company_id,
+            'session_id' => !empty($body['session_id']) ? (int)$body['session_id'] : null,
+            'trigger_type' => $body['trigger_type'],
+            'keyword' => $body['keyword'] ?? null,
+            'ai_prompt' => $body['ai_prompt'] ?? null,
+            'is_active' => $body['is_active'] ? 1 : 0
+        ];
+
+        if ($ruleId) {
+            $saveData['id'] = $ruleId;
+        }
+
+        // If gemini_api_key is provided, update it. If not, and we have an existing rule, retain it.
+        // If it's a password placeholder like '••••••••' or similar, don't overwrite the existing one.
+        if (isset($body['gemini_api_key']) && $body['gemini_api_key'] !== '••••••••' && $body['gemini_api_key'] !== '') {
+            $saveData['gemini_api_key'] = $body['gemini_api_key'];
+        }
+
+        $id = ChatbotRule::saveSecure($saveData);
+
+        $response->json([
+            'status' => 'success',
+            'message' => 'Chatbot rule saved successfully',
+            'id' => $id
+        ]);
+    }
+}