<?php

declare(strict_types=1);

namespace OCA\AnalyticsHub\Controller\Admin;

use OCP\IRequest;
use OCP\AppFramework\Http\TemplateResponse;
use OCP\AppFramework\Http\JSONResponse;
use OCP\IConfig;
use OCA\AnalyticsHub\AppInfo\Application;
use OCP\AppFramework\Controller;

/**
 * Admin Settings Controller
 *
 * @NoAdminRequired
 * @NoCSRFRequired
 */
class PageController extends Controller {

    private $appName;
    protected $request;
    private IConfig $config;

    public function __construct(string $appName, IRequest $request, IConfig $config) {
        parent::__construct($appName, $request);
        $this->appName = $appName;
        $this->request = $request;
        $this->config = $config;
    }

    /**
     * Index page - render admin UI
     *
     * @NoAdminRequired
     * @NoCSRFRequired
     */
    public function index(): TemplateResponse {
        // Load saved configuration
        $googleClientId = $this->config->getAppValue(Application::APP_NAME, 'google_client_id', '');
        $googleClientSecret = '•••'; // Masked for display
        $anthropicApiKey = '••••••••'; // Masked for display
        $isConfigured = !empty($googleClientId) && !empty($this->config->getAppValue(Application::APP_NAME, 'anthropic_api_key', ''));

        return new TemplateResponse($this->appName, 'admin', [
            'app_name' => $this->appName,
            'version' => Application::APP_VERSION,
            'is_configured' => $isConfigured,
            'google_client_id' => $googleClientId,
            'google_client_secret_masked' => $googleClientSecret,
            'anthropic_api_key_masked' => $anthropicApiKey,
        ]);
    }

    /**
     * Save configuration
     *
     * @NoAdminRequired
     * @NoCSRFRequired
     */
    public function save(): JSONResponse {
        $params = $this->request->getParams();

        // Validate required fields
        if (!isset($params['google_client_id']) || empty($params['google_client_id'])) {
            return new JSONResponse([
                'success' => false,
                'error' => 'Google Client ID is required'
            ]);
        }

        if (!isset($params['google_client_secret']) || empty($params['google_client_secret'])) {
            return new JSONResponse([
                'success' => false,
                'error' => 'Google Client Secret is required'
            ]);
        }

        if (!isset($params['anthropic_api_key']) || empty($params['anthropic_api_key'])) {
            return new JSONResponse([
                'success' => false,
                'error' => 'Anthropic API Key is required'
            ]);
        }

        try {
            // Save configuration
            $this->config->setAppValue(Application::APP_NAME, 'google_client_id', $params['google_client_id']);
            $this->config->setAppValue(Application::APP_NAME, 'google_client_secret', $params['google_client_secret']);
            $this->config->setAppValue(Application::APP_NAME, 'anthropic_api_key', $params['anthropic_api_key']);

            // Check if now configured
            $isConfigured = !empty($params['google_client_id']) && !empty($params['anthropic_api_key']);

            return new JSONResponse([
                'success' => true,
                'data' => [
                    'is_configured' => $isConfigured,
                    'message' => 'Configuration saved successfully'
                ]
            ]);

        } catch (\Exception $e) {
            return new JSONResponse([
                'success' => false,
                'error' => $e->getMessage()
            ]);
        }
    }

    /**
     * Load configuration
     *
     * @NoAdminRequired
     * @NoCSRFRequired
     */
    public function load(): JSONResponse {
        try {
            // Load configuration
            $googleClientId = $this->config->getAppValue(Application::APP_NAME, 'google_client_id', '');
            $googleClientSecret = ''; // Don't expose secret
            $anthropicApiKey = ''; // Don't expose secret

            $isConfigured = !empty($googleClientId) && !empty($this->config->getAppValue(Application::APP_NAME, 'anthropic_api_key', ''));

            return new JSONResponse([
                'success' => true,
                'data' => [
                    'google_client_id' => $googleClientId,
                    'google_client_secret_masked' => '•••', // Masked
                    'anthropic_api_key_masked' => '••••••••', // Masked
                    'is_configured' => $isConfigured,
                ]
            ]);

        } catch (\Exception $e) {
            return new JSONResponse([
                'success' => false,
                'error' => $e->getMessage()
            ]);
        }
    }
}