@objc private func buyPremium() {
        ProgressHUD.show()
        let identifier = iapManager.products[0].productIdentifier
        iapManager.purchases(productWith: identifier)
    }
    
    func checkPremium() {
        if !(self.currentUser?.isCurrent() ?? false)  {
            premiumButton.isHidden = true
            premiumIndicator.isHidden = !(self.isPremium ?? false)
        } else {
            if (self.isPremium ?? false) {
                premiumIndicator.isHidden = false
                premiumButton.isHidden = true
            } else {
                premiumIndicator.isHidden = true
                premiumButton.isHidden = false
            }
        }
    }
}