import Foundation

/// Remote server adapter placeholder implementing `AuthServiceProtocol`.
/// This stub demonstrates how `CelestiaTrace` can switch to a real remote backend server in the future.
final class RemoteAuthServiceStub: AuthServiceProtocol {
    private let baseURL: URL
    private let session: URLSession
    
    init(baseURL: URL = URL(string: "https://api.celestiatrace.com/v1")!, session: URLSession = .shared) {
        self.baseURL = baseURL
        self.session = session
    }
    
    func login(request: LoginRequest, completion: @escaping (AuthResult<UserAccount>) -> Void) {
        // TODO: Replace stub with URLSession POST request to `/auth/login`
        // let endpoint = baseURL.appendingPathComponent("auth/login")
        // var urlReq = URLRequest(url: endpoint)
        // urlReq.httpMethod = "POST"
        // ...
        
        completion(.failure(.networkError("未配置实际远程服务器地址")))
    }
    
    func register(request: RegisterRequest, completion: @escaping (AuthResult<UserAccount>) -> Void) {
        // TODO: Replace stub with URLSession POST request to `/auth/register`
        completion(.failure(.networkError("未配置实际远程服务器地址")))
    }
    
    func updateProfile(request: UpdateProfileRequest, completion: @escaping (AuthResult<UserAccount>) -> Void) {
        // TODO: Replace stub with URLSession PUT request to `/user/profile`
        completion(.failure(.networkError("未配置实际远程服务器地址")))
    }
    
    func changePassword(request: ChangePasswordRequest, completion: @escaping (AuthResult<Bool>) -> Void) {
        // TODO: Replace stub with URLSession POST request to `/user/change-password`
        completion(.failure(.networkError("未配置实际远程服务器地址")))
    }
    
    func logout(completion: @escaping () -> Void) {
        // TODO: Call remote `/auth/logout` endpoint if needed
        completion()
    }
    
    func getCurrentUser() -> UserAccount? {
        return nil
    }
}