module HTTPX
  class Connection::HTTP2
    include Callbacks
    include Loggable

    attr_reader streams: Hash[Request, HTTP2Next::Stream]
    attr_reader pending: Array[Request]

    @options: Options
    @max_concurrent_requests: Integer
    @max_requests: Integer
    @drains: Hash[Request, String]
    @pings: Array[String]
    @buffer: Buffer

    def interests: () -> io_interests?

    def close: () -> void

    def empty?: () -> bool

    def exhausted?: () -> bool

    def <<: (String) -> void

    def can_buffer_more_requests: () -> bool

    def send: (Request) -> void

    def consume: () -> void

    def handle_error: (StandardError ex) -> void

    def ping: () -> void

    alias reset init_connection

    def timeout: () -> Integer

    private

    def initialize: (Buffer, options) -> untyped

    def send_pending: () -> void

    def headline_uri: (Request) -> String

    def set_protocol_headers: (Request) -> _Each[headers_key, String]

    def handle: (Request request, HTTP2Next::Stream stream) -> void

    def init_connection: () -> void

    def handle_stream: (HTTP2Next::Stream stream, Request request) -> void

    def join_headers: (HTTP2Next::Stream stream, Request request) -> void

    def join_trailers: (HTTP2Next::Stream stream, Request request) -> void

    def join_body: (HTTP2Next::Stream stream, Request request) -> void

    def on_stream_headers: (HTTP2Next::Stream stream, Request request, Array[[String, String]] headers) -> void

    def on_stream_trailers: (HTTP2Next::Stream stream, Request request, Array[[String, String]] headers) -> void

    def on_stream_data: (HTTP2Next::Stream stream, Request request, string data) -> void

    def on_stream_close: (HTTP2Next::Stream stream, Request request, (Symbol | StandardError)? error) -> void

    def on_frame: (string bytes) -> void

    def on_settings: (*untyped) -> void

    def on_close: (Integer last_frame, Symbol? error, String? payload) -> void

    def on_frame_sent: (HTTP2Next::frame) -> void
    def on_frame_received: (HTTP2Next::frame) -> void

    def on_promise: (HTTP2Next::Stream) -> void

    def on_origin: (String) -> void

    def on_pong: (string ping) -> void
  end
end