import PackageDescription

let package = Package(
dependencies: [
    .package(url: "https://github.com/inaka/EventSource.git", .branch("master"))
])

/// RetryTime: This can be changed remotly if the server sends an event `retry:`
var retryTime: Int { get }

/// URL where EventSource will listen for events.
var url: URL { get }

/// The last event id received from server. This id is neccesary to keep track of the last event-id received to avoid
/// receiving duplicate events after a reconnection.
var lastEventId: String? { get }

/// Current state of EventSource
var readyState: EventSourceState { get }

/// Method used to connect to server. It can receive an optional lastEventId indicating the Last-Event-ID
///
/// - Parameter lastEventId: optional value that is going to be added on the request header to server.
func connect(lastEventId: String?)

/// Method used to disconnect from server.
func disconnect()

/// Returns the list of event names that we are currently listening for.
///
/// - Returns: List of event names.
func events() -> [String]

/// Callback called when EventSource has successfully connected to the server.
///
/// - Parameter onOpenCallback: callback
func onOpen(_ onOpenCallback: @escaping (() -> Void))

/// Callback called once EventSource has disconnected from server. This can happen for multiple reasons.
/// The server could have requested the disconnection or maybe a network layer error, wrong URL or any other
/// error. The callback receives as parameters the status code of the disconnection, if we should reconnect or not
/// following event source rules and finally the network layer error if any. All this information is more than
/// enought for you to take a decition if you should reconnect or not.
/// - Parameter onOpenCallback: callback
func onComplete(_ onComplete: @escaping ((Int?, Bool?, NSError?) -> Void))

/// This callback is called everytime an event with name "message" or no name is received.
func onMessage(_ onMessageCallback: @escaping ((_ id: String?, _ event: String?, _ data: String?) -> Void))

/// Add an event handler for an specific event name.
///
/// - Parameters:
///   - event: name of the event to receive
///   - handler: this handler will be called everytime an event is received with this event-name
func addEventListener(_ event: String,
                      handler: @escaping ((_ id: String?, _ event: String?, _ data: String?) -> Void))

/// Remove an event handler for the event-name
///
/// - Parameter event: name of the listener to be remove from event source.
func removeEventListener(_ event: String)