import Foundation

struct StubAuthenticationService: AuthenticationService {
    let simulatedError: LoginError?
    let delay: Duration

    init(simulatedError: LoginError? = nil, delay: Duration = .milliseconds(600)) {
        self.simulatedError = simulatedError
        self.delay = delay
    }

    func signIn(salesCode: String) async throws -> LoginSession {
        try await Task.sleep(for: delay)
        try Task.checkCancellation()
        if let simulatedError {
            throw simulatedError
        }
        // Demo employee until the authentication API supplies the profile.
        return LoginSession(salesCode: salesCode, displayName: "M. Krämer")
    }
}