enum Folder {

    case hidden
    case opened
}

struct File {

    private var content: String
    private var access: Folder
    private var password: String?

    init(content: String, access: Folder, password: String?) {
        self.content = content
        self.access = access
        self.password = password
    }

    private var accessToFolder: Folder {
        let folderType: Folder
        switch access {
        case .hidden:
            folderType = .hidden
        default:
            folderType = .opened
        }
        return folderType
    }

    func showContent() -> String {
        let resultOfProcessing: String
        switch accessToFolder {
        case .opened:
            if self.password == nil {
                resultOfProcessing = self.content
            } else {
                resultOfProcessing = "Can't show. We don't know password"
            }
        case .hidden:
            resultOfProcessing = "No access. Folder is hidden"
        }
        return resultOfProcessing
    }

}

var movie = File(content: "Columbia pictures presents....", access: .opened, password: nil)

print(movie.showContent())