<?php

declare(strict_types=1);

namespace OCA\F7Push\Controller;

use OCA\F7Push\Service\PushDispatcher;
use OCP\AppFramework\Http;
use OCP\AppFramework\Http\Attribute\NoAdminRequired;
use OCP\AppFramework\Http\Attribute\NoCSRFRequired;
use OCP\AppFramework\Http\DataResponse;
use OCP\AppFramework\OCSController;
use OCP\IRequest;
use OCP\IUserSession;

class DeviceApiController extends OCSController {
	public function __construct(
		string $appName,
		IRequest $request,
		private IUserSession $userSession,
		private PushDispatcher $pushDispatcher,
	) {
		parent::__construct($appName, $request);
	}

	/**
	 * Register or update FCM device token for the logged-in F7cloud account.
	 *
	 * JSON: { "deviceId", "fcmToken", "platform?", "clientApp?" }
	 */
	#[NoAdminRequired]
	#[NoCSRFRequired]
	public function register(): DataResponse {
		$user = $this->userSession->getUser();
		if ($user === null) {
			return new DataResponse(['error' => 'unauthorized'], Http::STATUS_UNAUTHORIZED);
		}

		$params = $this->request->getParams();
		$deviceId = trim((string)($params['deviceId'] ?? ''));
		$fcmToken = trim((string)($params['fcmToken'] ?? ''));
		if ($deviceId === '' || $fcmToken === '') {
			return new DataResponse(['error' => 'deviceId and fcmToken required'], Http::STATUS_BAD_REQUEST);
		}

		$platform = trim((string)($params['platform'] ?? 'android'));
		$clientApp = trim((string)($params['clientApp'] ?? 'f7cloud-apk'));

		$device = $this->pushDispatcher->registerDevice(
			$user->getUID(),
			$deviceId,
			$fcmToken,
			$platform !== '' ? $platform : 'android',
			$clientApp !== '' ? $clientApp : 'f7cloud-apk',
		);

		return new DataResponse([
			'success' => true,
			'deviceId' => $device->getDeviceId(),
		]);
	}

	#[NoAdminRequired]
	#[NoCSRFRequired]
	public function unregister(string $deviceId): DataResponse {
		$user = $this->userSession->getUser();
		if ($user === null) {
			return new DataResponse(['error' => 'unauthorized'], Http::STATUS_UNAUTHORIZED);
		}

		$this->pushDispatcher->unregisterDevice($user->getUID(), $deviceId);
		return new DataResponse(['success' => true]);
	}

	#[NoAdminRequired]
	#[NoCSRFRequired]
	public function listDevices(): DataResponse {
		$user = $this->userSession->getUser();
		if ($user === null) {
			return new DataResponse(['error' => 'unauthorized'], Http::STATUS_UNAUTHORIZED);
		}

		$devices = $this->pushDispatcher->listDevices($user->getUID());
		$list = array_map(static function ($device) {
			return [
				'deviceId' => $device->getDeviceId(),
				'platform' => $device->getPlatform(),
				'clientApp' => $device->getClientApp(),
				'lastSeen' => $device->getLastSeen(),
			];
		}, $devices);

		return new DataResponse(['devices' => $list]);
	}
}