export function brWebNotificationsService()

in ui-modules/utils/web-notifications/web-notifications.js [28:92]

• 56 lines of code
• 13 McCabe index (conditional complexity)

export function brWebNotificationsService($q) {
    const STORAGE_KEY = `${MODULE_NAME}-enabled`;

    this.supported = 'Notification' in window && 'localStorage' in window ? $q.resolve() : $q.reject();

    this.getPermission = () => {
        return 'Notification' in window ? $q.resolve(Notification.permission) : $q.reject('denied');
    };

    this.requestPermission = () => {
        return this.supported.then(() => {
            return Notification.requestPermission();
        });
    };

    this.isEnabled = () => {
        return this.getPermission().then(permission => {
            let isEnabled = localStorage.getItem(STORAGE_KEY);
            if (isEnabled !== null && isEnabled === '1') {
                // Notification permission has been revoked, we need to set back the persisted value
                if (permission !== 'granted') {
                    return this.setEnable(false).then(() => $q.reject('Notifications are disabled'));
                }
                return $q.resolve();
            }
            return $q.reject('Notifications are disabled');
        })
    };

    this.setEnable = enable => {
        try {
            localStorage.setItem(STORAGE_KEY, enable ? 1 : 0);
            return $q.resolve(enable);
        } catch (ex) {
            return $q.reject(ex);
        }
    };

    this.send = (title, options, showWhenFocused = false) => {
        if (document.hasFocus() && !showWhenFocused) {
            return $q.reject('Window has focus and "showWhenFocused" set to false, notification won\'t be sent');
        }

        return this.supported.then(() => {
            return this.getPermission();
        }).then(permission => {
            if (permission !== 'granted') {
                throw new Error('Permission not granted, cannot send notification');
            }
            return this.isEnabled();
        }).then(() => {
            let n = new Notification(title, options);
            n.onclick = (e)=> {
                e.preventDefault();
                window.focus();
                e.target.close();
                if (e.target.data) {
                    window.location.href = e.target.data;
                }
            }
        });
    };

    return this;
}