/// 会话用例。
public struct SessionUseCase: Sendable {
    private let repository: SessionRepository

    public init(repository: SessionRepository) {
        self.repository = repository
    }

    public func observeIsLoggedIn() -> AsyncThrowingStream<Bool, Error> {
        repository.observeIsLoggedIn()
    }

    public func requestSmsCode(phone: String) async throws {
        try await repository.requestSmsCode(phone: phone)
    }

    public func login(phone: String, code: String) async throws {
        try await repository.login(phone: phone, code: code)
    }

    public func logout() async throws {
        try await repository.logout()
    }
}