Invalidate Remote Config Cache

invalidate-remote-config-cache.swift

var expirationDuration: TimeInterval = 43200 // 12hs of cache by default
​
if UserDefaults.standard.bool(forKey: "CONFIG_STATE") {
    UserDefaults.standard.set(false, forKey: "CONFIG_STATE")
    UserDefaults.standard.synchronize()
            
    expirationDuration = 0
}
​
RemoteConfig.fetch(withExpirationDuration: expirationDuration) { [weak self] status, error in
    RemoteConfig.remoteConfig().activateFetched()
}