enum FileStatus {

    case hidden
    case opened
    case password
}

struct File {

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

    init(content: String, access: FileStatus, password: String?) {
        self.content = content
        self.access = access
        self.password = self.access == .opened ? nil : password
    }

    private var accessToFile: FileStatus {
        let fileType: FileStatus
        switch access {
        case .hidden:
            fileType = .hidden
        case .password:
            fileType = .password
        default:
            fileType = .opened
        }
        return fileType
    }

    func showContent(password: String?) -> String {
        let resultOfProcessing: String
        switch accessToFile {
        case .opened:
            resultOfProcessing = self.content
        case .hidden:
            resultOfProcessing = "No access. File is hidden"
        case .password:
            if password == self.password {
                resultOfProcessing = self.content
            } else {
                resultOfProcessing = "Wrong password"
            }
        }
        return resultOfProcessing
    }

}

var movie = File(content: "Columbia pictures presents....", access: .password, password: "543")
print(movie.showContent(password: "123"))

var picture = File(content: "Beautiful flowers", access: .opened, password: "322")
print(picture.showContent(password: nil))