Class: Rubord::Gateway

Inherits:
Object
  • Object
show all
Defined in:
lib/rubord/structs/gateway.rb

Constant Summary collapse

GATEWAY_URL = 
"wss://gateway.discord.gg/?v=10&encoding=json"
OPCODE_DISPATCH = 
0
OPCODE_HEARTBEAT = 
1
OPCODE_IDENTIFY = 
2
OPCODE_HELLO = 
10
OPCODE_HEARTBEAT_ACK = 
11
OPCODE_RECONNECT = 
7
OPCODE_INVALID_SESSION = 
9

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(token, intents) ⇒ Gateway

Returns a new instance of Gateway.



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# File 'lib/rubord/structs/gateway.rb', line 20

def initialize(token, intents)
  @token = token
  @intents = intents
  @seq = nil
  @session_id = nil
  @ws = nil
  @stopping = false
  @connected = false

  @heartbeat_interval = nil
  @last_heartbeat_at = nil
  @latency = 0
  @heartbeat_thread = nil
  @event_handlers = {}

  @mutex = Mutex.new
end

Instance Attribute Details

#latency ⇒ Object (readonly)

Returns the value of attribute latency.



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# File 'lib/rubord/structs/gateway.rb', line 18

def latency
  @latency
end

#seq ⇒ Object (readonly)

Returns the value of attribute seq.



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# File 'lib/rubord/structs/gateway.rb', line 18

def seq
  @seq
end

#session_id ⇒ Object (readonly)

Returns the value of attribute session_id.



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# File 'lib/rubord/structs/gateway.rb', line 18

def session_id
  @session_id
end

Instance Method Details

#cleanup_connection ⇒ Object 



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# File 'lib/rubord/structs/gateway.rb', line 328

def cleanup_connection
  @connected = false

  @heartbeat_thread&.kill rescue nil
  @heartbeat_thread = nil

  begin
    @ws&.close if @ws.respond_to?(:close)
  rescue
  end
  @ws = nil
end

#connect(&block) ⇒ Object 



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# File 'lib/rubord/structs/gateway.rb', line 38

def connect(&block)
  @mutex.synchronize do
    return if @connected && !@stopping

    if @token.nil? || @token.strip.empty?
      raise InvalidTokenError, "Discord token cannot be empty"
    end

    @stopping = false
    @connected = false

    begin
      @ws = WebSocket::Client::Simple.connect(GATEWAY_URL, headers: {
        "User-Agent" => "DiscordBot (https://github.com/kauzxx00/rubord, 1.0.0)",
      })
    rescue => e
      Rubord::Logger.error "[Rubord:Gateway] Failed to connect to Discord Gateway: #{e.message}"
      schedule_reconnect
      return
    end

    gateway_instance = self

    @ws.on(:open) do
      gateway_instance.handle_open
    end

    @ws.on(:message) do |event|
      gateway_instance.handle_message(event, &block)
    end

    @ws.on(:close) do |event|
      gateway_instance.handle_close(event)
    end

    @ws.on(:error) do |e|
      gateway_instance.handle_error(e)
    end
  end

  sleep 1 while !@stopping
end

#connected? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubord/structs/gateway.rb', line 357

def connected?
  @connected && !@stopping
end

#disconnect ⇒ Object 



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# File 'lib/rubord/structs/gateway.rb', line 346

def disconnect
  Rubord::Logger.warn "[Rubord:Gateway] Disconnecting..."

  @mutex.synchronize do
    @stopping = true
    @connected = false

    cleanup_connection
  end
end

#handle_close(event) ⇒ Object 



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# File 'lib/rubord/structs/gateway.rb', line 130

def handle_close(event)
  Rubord::Logger.warn "[Rubord:Gateway] WebSocket connection closed: code=#{event.code}, reason=#{event.reason}"
  cleanup_connection
  schedule_reconnect unless @stopping
end

#handle_dispatch(event_type, data, &block) ⇒ Object 



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# File 'lib/rubord/structs/gateway.rb', line 177

def handle_dispatch(event_type, data, &block)
  if event_type == "READY"
    @session_id = data["session_id"]
    @connected = true
  end

  event_map = {
    "READY" => :ready,
    "RESUMED" => :resumed,
    "MESSAGE_CREATE" => :message_create,
    "MESSAGE_UPDATE" => :message_update,
    "MESSAGE_DELETE" => :message_delete,
    "GUILD_CREATE" => :guild_create,
    "GUILD_DELETE" => :guild_delete,
    "CHANNEL_CREATE" => :channel_create,
    "CHANNEL_DELETE" => :channel_delete,
    "INTERACTION_CREATE" => :interaction_create,
    "MESSAGE_REACTION_ADD" => :reaction_add,
    "MESSAGE_REACTION_REMOVE" => :reaction_remove,
    "TYPING_START" => :typing_start,
    "PRESENCE_UPDATE" => :presence_update,
  }

  event_symbol = event_map[event_type]

  if event_symbol && block_given?
    begin
      block.call(event_symbol, data)
    rescue => e
      Rubord::Logger.warn "[Rubord:Gateway] Error in event handler for #{event_type}: #{e.message}"
      Rubord::Logger.warn e.full_message
    end
  end
end

#handle_error(e) ⇒ Object 



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# File 'lib/rubord/structs/gateway.rb', line 136

def handle_error(e)
  Rubord::Logger.warn "[Rubord:Gateway] WebSocket error: #{e.message}"
  Rubord::Logger.warn e.backtrace.join("\n") if e.backtrace
  cleanup_connection
  schedule_reconnect unless @stopping
end

#handle_heartbeat_ack ⇒ Object 



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# File 'lib/rubord/structs/gateway.rb', line 155

def handle_heartbeat_ack
  if @last_heartbeat_at
    @latency = ((Time.now - @last_heartbeat_at) * 1000).round
  end
end

#handle_hello(data) ⇒ Object 



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# File 'lib/rubord/structs/gateway.rb', line 143

def handle_hello(data)
  @heartbeat_interval = data["heartbeat_interval"].to_f / 1000.0
  @connected = true

  if @session_id && @seq
    resume_connection
  else
    start_heartbeat
    identify
  end
end

#handle_invalid_session(resumable) ⇒ Object 



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# File 'lib/rubord/structs/gateway.rb', line 161

def handle_invalid_session(resumable)
  Rubord::Logger.warn "[Rubord:Gateway] Invalid session (resumable: #{resumable})"

  if resumable && @session_id && @seq
    Rubord::Logger.warn "[Rubord:Gateway] Attempting to resume session"
    sleep rand(1..3)
    identify
  else
    Rubord::Logger.warn "[Rubord:Gateway] Starting new session"
    @session_id = nil
    @seq = nil
    sleep rand(1..5)
    identify
  end
end

#handle_message(event, &block) ⇒ Object 



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# File 'lib/rubord/structs/gateway.rb', line 85

def handle_message(event, &block)
  data = event.data.to_s

  if data.nil? || data.strip.empty?
    Rubord::Logger.warn "[Rubord:Gateway] Received empty payload"
    return
  end

  begin
    payload = JSON.parse(data)
  rescue JSON::ParserError => e
    Rubord::Logger.warn "[Rubord:Gateway] Failed to parse JSON: #{e.message}"
    Rubord::Logger.warn "[Rubord:Gateway] Raw data: #{data.inspect[0..100]}" if data && data.length > 0
    return
  end

  op = payload["op"]
  t = payload["t"]
  d = payload["d"]
  s = payload["s"]

  @mutex.synchronize do
    @seq = s if s && s > 0

    case op
    when OPCODE_HELLO
      handle_hello(d)
    when OPCODE_HEARTBEAT_ACK
      handle_heartbeat_ack
    when OPCODE_RECONNECT
      Rubord::Logger.warn "[Rubord:Gateway] Discord requested reconnect"
      schedule_reconnect
    when OPCODE_INVALID_SESSION
      handle_invalid_session(d)
    when OPCODE_DISPATCH
      handle_dispatch(t, d, &block)
    else
      Rubord::Logger.warn "[Rubord:Gateway] Unhandled opcode: #{op}"
    end
  end
rescue => e
  Rubord::Logger.warn "[Rubord:Gateway] Error processing message: #{e.message}"
  Rubord::Logger.warn e.backtrace.join("\n") if e.backtrace
end

#handle_open ⇒ Object 



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# File 'lib/rubord/structs/gateway.rb', line 81

def handle_open
  @latency = 0
end

#identify ⇒ Object 



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# File 'lib/rubord/structs/gateway.rb', line 212

def identify
  payload = {
    op: OPCODE_IDENTIFY,
    d: {
      token: @token,
      intents: @intents,
      properties: {
        "$os": "linux",
        "$browser": "Rubord",
        "$device": "Rubord",
      },
      compress: false,
      large_threshold: 250,
      shard: [0, 1],
    },
  }

  send_payload(payload)
end

#reconnect ⇒ Object 



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# File 'lib/rubord/structs/gateway.rb', line 341

def reconnect
  Rubord::Logger.warn "[Rubord:Gateway] Manual reconnect requested"
  schedule_reconnect
end

#resume_connection ⇒ Object 



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# File 'lib/rubord/structs/gateway.rb', line 232

def resume_connection
  Rubord::Logger.warn "[Rubord:Gateway] Attempting to resume session #{@session_id} at seq #{@seq}"

  payload = {
    op: 6,
    d: {
      token: @token,
      session_id: @session_id,
      seq: @seq,
    },
  }

  send_payload(payload)
end

#schedule_reconnect ⇒ Object 



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# File 'lib/rubord/structs/gateway.rb', line 301

def schedule_reconnect
  return if @stopping

  Thread.new do
    @mutex.synchronize do
      cleanup_connection

      delay = 1
      max_delay = 30

      while !@stopping
        Rubord::Logger.warn "[Rubord:Gateway] Reconnecting in #{delay}s..."
        sleep delay

        begin
          connect
          break if @connected
        rescue => e
          Rubord::Logger.warn "[Rubord:Gateway] Reconnect failed: #{e.message}"
        end

        delay = [delay * 2, max_delay].min
      end
    end
  end
end

#send_payload(payload) ⇒ Object 



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# File 'lib/rubord/structs/gateway.rb', line 279

def send_payload(payload)
  return if @stopping || !@ws

  begin
    json = payload.to_json
    @ws.send(json)

    if ENV["DEBUG"]
      opcode_name = case payload[:op] || payload["op"]
        when 1 then "HEARTBEAT"
        when 2 then "IDENTIFY"
        when 6 then "RESUME"
        else "OP#{payload[:op] || payload["op"]}"
        end
      Rubord::Logger.warn "[Rubord:Gateway] Sent #{opcode_name}"
    end
  rescue => e
    Rubord::Logger.warn "[Rubord:Gateway] Failed to send payload: #{e.message}"
    schedule_reconnect
  end
end

#start_heartbeat ⇒ Object 



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# File 'lib/rubord/structs/gateway.rb', line 247

def start_heartbeat
  return unless @heartbeat_interval && @heartbeat_interval > 0

  @heartbeat_thread&.kill rescue nil

  @heartbeat_thread = Thread.new do
    while !@stopping && @connected
      begin
        sleep @heartbeat_interval

        break if @stopping || !@connected

        if @last_heartbeat_at && (Time.now - @last_heartbeat_at) > (@heartbeat_interval * 3)
          Rubord::Logger.warn "[Rubord:Gateway] No heartbeat ACK received, reconnecting..."
          schedule_reconnect
          break
        end

        heartbeat_payload = { op: OPCODE_HEARTBEAT, d: @seq }
        @last_heartbeat_at = Time.now
        send_payload(heartbeat_payload)

        Rubord::Logger.warn "[Rubord:Gateway] Sent heartbeat (seq: #{@seq})" if ENV["DEBUG"]
      rescue => e
        Rubord::Logger.warn "[Rubord:Gateway] Heartbeat error: #{e.message}"
        schedule_reconnect
        break
      end
    end
  end
end