<?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
        ]);
    }
}