ServerRoute.swift

struct ServerRoute {
    typealias Handler = (_ request: Request, _ count: Int) -> Response?

    enum Method: String {
        case GET, POST
    }

    let method: Method
    let pattern: String
    let handler: Handler

    var uri: String { "\(method.rawValue) \(pattern)" }
}

@available(iOS 12.0, *)
extension StubServer {
    /// Add server route.
    ///
    ///     server.add(Stabs.Billing.bookingPaymentAlreadyActivated)
    ///
    func add(_ route: ServerRoute) {
        addHandler(route.uri, route.handler)
    }
}

enum Stabs {
    enum Billing {}
}

extension Stabs.Billing {
    /// Skip booking payment
    static var bookingPaymentAlreadyActivated: ServerRoute {
        ServerRoute(method: .POST, pattern: "/billing/booking/payment/init") { _, _ in
            Response.badResponse(code: .productAlreadyActivated)
        }
    }
}