let feathersRestApp = Feathers(RestProvider(baseURL: URL(string: "https://myserver.com")))

let userService = feathersRestApp.service("users")

service.request(.find(parameters: ["name": "Waldo"]))
.on(value: { response in
  print(response)
})
.start()

public enum Method {

    case find(query: Query?)
    case get(id: String, query: Query?)
    case create(data: [String: Any], query: Query?)
    case update(id: String?, data: [String: Any], query: Query?)
    case patch(id: String?, data: [String: Any], query: Query?)
    case remove(id: String?, query: Query?)

}

feathers.use("users-local", CoreDataService())

class FileService: Service {

  public override func request(_ method: Service.Method) -> SignalProducer<Response, FeathersError> {
        let fileManager = FileManager.default
        switch method {
        case let .create(data, _):
          guard let id = data["id"] else { break }
          let fileData = NSKeyedArchiver.archiveData(withRootObject: data)
          fileManager.createFile(atPath: "\(path)/\(id)", contents: fileData, attributes: nil)
        default: break
        }
    }

}

let query = Query()
  .ne("age", 50)
  .limit(25)
  .skip(5)

let service = feathers.service("users")

service.request(.find(query)).start()

feathersRestApp.authenticate([
  "strategy": "facebook-token",
  "access_token": "ACCESS_TOKEN"
])
.start()

feathersRestApp.logout().start()

public enum RealTimeEvent: String {

   case created
   case updated
   case patched
   case removed

}

let feathersSocket = Feathers(provider: SocketProvider(baseURL: URL(string: "https://myserver.com")!, configuration: []))

let userService = feathersSocket.service(path: "users")
userService.on(.created)
.observeValues { entity in
  print(entity) // Prints the object that was just created
}

userService.off(.created)

public protocol Hook {
    func run(with hookObject: HookObject) -> Promise<HookObject>
}

struct CreateLogHook: Hook {

  func run(with hookObject: HookObject) -> Promise<HookObject> {
    var object = hookObject
    if object.method == .create {
      print("create happened")
    }
    return Promise(value: object)
  }

}

struct FetchAssociatedUserHook: Hook {
  func run(with hookObject: HookObject) -> Promise<HookObject> {
    var object = hookObject
    guard object.app.service.path == "groups" else {
      return Promise(value: hookObject)
    }
    guard case var .get(id, parameters)  = object.method else {
      return Promise(value: hookObject)
    }
    guard let userIdentifier = parameters["user_id"] as? String else {
      return Promise(error: .myCustomError("no associated user found when expected to exist"))
    }
    return object.app.service("users").request(.get(parameters: ["id": userIdentifier])).then { response in
      if case let .jsonObject(object) = response.data {
        parameters["user_id"] = object["id"]
        object.method = .get(id, parameters)
      }
      return Promise(value: object)
    }
  }
}

/// Hook object that gets passed through hook functions
public struct HookObject {

    /// Represents the kind of hook.
    ///
    /// - before: Hook is run before the request is made.
    /// - after: Hook is run after the request is made.
    /// - error: Runs when there's an error.
    public enum Kind {
        case before, after, error
    }

    /// The kind of hook.
    public let type: Kind

    /// Feathers application, used to retrieve other services.
    public let app: Feathers

    /// The service this hook currently runs on.
    public let service: Service

    /// The service method.
    public var method: Service.Method

    /// Error that can be set which will stop the hook processing chain and run a special chain of error hooks.
    public var error: FeathersError?

    /// Result of a successful method call, only in after hooks.
    public var result: Response?

    public init(
        type: Kind,
        app: Feathers,
        service: Service,
        method: Service.Method) {
        self.type = type
        self.app = app
        self.service = service
        self.method = method
    }

}

let beforeHooks = Service.Hooks(all: [LogResultHook()], create: [AppendUserIdHook()]])
let afterHooks = Service.Hooks(find: [SaveInRealmHook()])
let errorHooks = Service.Hooks(all: [LogErrorHook(destination: "log.txt")])

let service = app.service("users")
service.before(beforeHooks)
service.after(afterHooks)
service.error(errorHooks)

let beforeHooks = service.hooks(for: .before)