module HTTPX
  class Session
    include Loggable
    include Chainable

    EMPTY_HASH: Hash[untyped, untyped]

    @options: Options
    @responses: Hash[Request, response]
    @persistent: bool?

    def wrap: () { (instance) -> void } -> void

    def close: (*untyped) -> void

    def request: (*Request, **untyped) -> (response | Array[response])
               | (*untyped, **untyped) -> (response | Array[response])

    def build_request: (String | verb, generic_uri, ?options) -> Request

    # def self.plugin: (Symbol | Module, ?options) { (Class) -> void } -> singleton(Session)
    #                | (Symbol | Module, ?options) -> singleton(Session)



    def self.default_options: -> Options

    private

    def initialize: (?options) { (instance) -> void } -> untyped
                  | (?options) -> untyped

    def pool: -> Pool
    def on_response: (Request, response) -> void
    def on_promise: (untyped, untyped) -> void
    def fetch_response: (Request request, untyped, untyped) -> response?

    def find_connection: (Request, Array[Connection] connections, Options options) -> Connection

    def set_connection_callbacks: (Connection, Array[Connection], Options) -> void

    def build_altsvc_connection: (Connection, Array[Connection], URI::Generic, String, Hash[String, String], Options) -> Connection?

    def build_requests: (verb | string, uri, options) -> Array[Request]
                      | (Array[[verb | string, uri, options]], options) -> Array[Request]
                      | (Array[[verb | string, uri]], options) -> Array[Request]
                      | (verb | string, _Each[[uri, options]], Options) -> Array[Request]
                      | (verb | string, _Each[uri], options) -> Array[Request]

    def build_connection: (URI::Generic, Options) -> Connection

    def send_requests: (*Request, options) -> Array[response]

    def _send_requests: (Array[Request], Options) -> Array[Connection]

    def receive_requests: (Array[Request], Array[Connection], options) -> Array[response]
  end
end