<?php

namespace Alexr\Http\Controllers;

use Alexr\Settings\WhatsappTemplate;
use Alexr\Whatsapp\WhatsappManager;
use Evavel\Http\Controllers\Controller;
use Evavel\Http\Request\Request;

/**
 * Controller for managing default WhatsApp templates.
 *
 * Handles listing available languages, loading template definitions
 * from JSON files, and uploading them to Twilio Content API.
 */
class WhatsappDefaultTemplatesController extends Controller
{
	/**
	 * Get available languages for default templates.
	 *
	 * @param Request $request
	 * @return void
	 */
	public function languages(Request $request)
	{
		$tenantId = $request->tenantId();

		try {
			$manager = new WhatsappManager($tenantId);
			$provider = $manager->getProvider();

			if (!$provider || !method_exists($provider, 'getAvailableDefaultLanguages')) {
				wp_send_json_error([
					'error' => __eva('Default templates are not supported by this provider.'),
				]);
				return;
			}

			$languages = $provider->getAvailableDefaultLanguages();

			wp_send_json_success([
				'languages' => array_keys($languages),
			]);

		} catch (\Exception $e) {
			wp_send_json_error([
				'error' => $e->getMessage(),
			]);
		}
	}

	/**
	 * Get the list of default templates for a language.
	 *
	 * @param Request $request
	 * @return void
	 */
	public function list(Request $request)
	{
		$tenantId = $request->tenantId();
		$language = $request->language ?? 'en';

		try {
			$manager = new WhatsappManager($tenantId);
			$provider = $manager->getProvider();

			if (!$provider || !method_exists($provider, 'getDefaultTemplates')) {
				wp_send_json_error([
					'error' => __eva('Default templates are not supported by this provider.'),
				]);
				return;
			}

			$templates = $provider->getDefaultTemplates($language);

			wp_send_json_success([
				'templates' => array_values($templates),
				'language'  => $language,
				'count'     => count($templates),
			]);

		} catch (\Exception $e) {
			wp_send_json_error([
				'error' => $e->getMessage(),
			]);
		}
	}

	/**
	 * Upload a single template to Twilio and request WhatsApp approval.
	 *
	 * @param Request $request
	 * @return void
	 */
	public function upload(Request $request)
	{
		$tenantId = $request->tenantId();
		$template = $request->template;
		$language = $request->language ?? 'en';

		if (empty($template)) {
			wp_send_json_error([
				'error' => __eva('Template data is required.'),
			]);
			return;
		}

		try {
			$manager = new WhatsappManager($tenantId);

			if (!$manager->isConfigured()) {
				wp_send_json_error([
					'error' => __eva('WhatsApp service is not configured.'),
				]);
				return;
			}

			$provider = $manager->getProvider();

			if (!$provider || !method_exists($provider, 'createAndSubmitTemplate')) {
				wp_send_json_error([
					'error' => __eva('Default templates are not supported by this provider.'),
				]);
				return;
			}

			// Ensure language is set in template
			if (is_array($template)) {
				$template['language'] = $language;
			}

			$templateName = $template['template_name'] ?? $template['name'] ?? '';
			if ($templateName) {
				$templateSetting = WhatsappTemplate::where('restaurant_id', $tenantId)->first();
				$existingTemplates = $templateSetting ? ($templateSetting->templates ?? []) : [];

				foreach ($existingTemplates as $existing) {
					if (($existing['name'] ?? '') === $templateName && ($existing['language'] ?? '') === $language) {
						wp_send_json_error([
							'error' => __eva('A template with this name and language already exists.'),
							'existing_sid' => $existing['sid'] ?? null,
						]);
						return;
					}
				}
			}

			$result = $provider->createAndSubmitTemplate($template);

			if ($result['success']) {
				wp_send_json_success([
					'sid'             => $result['data']['sid'] ?? null,
					'friendly_name'   => $result['data']['friendly_name'] ?? null,
					'template_name'   => $result['data']['template_name'] ?? null,
					'approval_status' => $result['data']['approval_status'] ?? null,
					'message'         => $result['message'],
				]);
			} else {
				wp_send_json_error([
					'error'   => $result['message'],
					'details' => $result['data'] ?? null,
				]);
			}

		} catch (\Exception $e) {
			wp_send_json_error([
				'error' => $e->getMessage(),
			]);
		}
	}

	/**
	 * Auto-map uploaded templates to whatsapp messages, reminders and reconfirmations.
	 *
	 * @param Request $request
	 * @return void
	 */
	public function autoMap(Request $request)
	{
		$tenantId = $request->tenantId();
		//ray('AUTOMAP: '. $tenantId);

		try {
			$result = alexr_whatsapp_auto_map_templates($tenantId);

			wp_send_json_success([
				'mapped' => $result,
			]);

		} catch (\Exception $e) {
			wp_send_json_error([
				'error' => $e->getMessage(),
			]);
		}
	}
}