import env from "../../env";
import urlB64ToUint8Array from "./base64-uint8";

export const removeNotificationSubscription = (): Promise<boolean>  => {
    if ('serviceWorker' in navigator) {
        return navigator.serviceWorker.ready.then(function (registration) {
            return registration.pushManager.getSubscription()
                .then(function (subscription) {
                    if (subscription) {
                        // Unsubscribe the user
                        return subscription.unsubscribe();
                    } else {
                        return true
                    }
                })
                .then(function (success) {
                    if (success) {
                        return true
                        // Optionally, send a request to your server to remove the subscription from your database
                    }
                    return false
                })
                .catch(function (error) {
                    console.error('Error during unsubscribe:', error);
                    return false
                });
        }).catch(function (error) {
            console.error('Service worker not ready', error)
            return false
        })
    } else {
        console.error('Service workers are not supported.')
        return Promise.resolve(false)
    }
}

export const getNotificationSubscription = () => {
    if ('serviceWorker' in navigator) {
        return navigator.serviceWorker.ready.then(function (registration) {
            return registration.pushManager.subscribe({
                userVisibleOnly: true,
                applicationServerKey: urlB64ToUint8Array(env.VAPID_PUB)
            }).then(function (subscription) {
                return subscription
            }).catch(function (error) {
                return null
            })
        }).catch(function (error) {
            console.error('Service worker not ready', error)
            return null
        })
    } else {
        console.error('Service workers are not supported.')
    }
    return Promise.resolve(null)
}

export default getNotificationSubscription