import Foundation public enum MoonshotRegion: String, CaseIterable, Sendable {    case international    case china     private static let balancePath = "v1/users/me/balance"     public var displayName: String {        switch self {        case .international:            "International (api.moonshot.ai)"        case .china:            "China (api.moonshot.cn)"        }    }     public var apiBaseURLString: String {        switch self {        case .international:            "https://api.moonshot.ai"        case .china:            "https://api.moonshot.cn"        }    }     public var balanceURL: URL {        URL(string: self.apiBaseURLString)!.appendingPathComponent(Self.balancePath)    }}