Class: SlackbotFrd::SlackConnection

Inherits:
Object
  • Object
show all
Defined in:
lib/slackbot_frd/lib/slack_connection.rb

Constant Summary collapse

FILE_PATH = 
File.expand_path(__FILE__)
APP_ROOT = 
File.expand_path(File.dirname(File.dirname(FILE_PATH)))
FILE_DIR = 
File.dirname(FILE_PATH)
LOG_FILE = 
"#{APP_ROOT}/bp-slackbot.log"
PID_FILE_NAME = 
"#{APP_ROOT}/bp-slackbot.pid"
PING_INTERVAL_SECONDS = 
5

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(token:, errors_file:, monitor_connection: true) ⇒ SlackConnection

Returns a new instance of SlackConnection.



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 28

def initialize(token:, errors_file:, monitor_connection: true)
  log_and_add_to_error_file("No token passed to #{self.class}") unless token

  @token = token
  @errors_file = errors_file
  @monitor_connection = monitor_connection

  @event_id = 0
  @on_connected_callbacks = []
  @on_disconnected_callbacks = []
  @on_message_callbacks = UserChannelCallbacks.new
  @on_channel_left_callbacks = UserChannelCallbacks.new
  @on_channel_joined_callbacks = UserChannelCallbacks.new

  # These hashes are used to map ids to names efficiently
  @user_id_to_name = {}
  @user_name_to_id = {}
  @channel_id_to_name = {}
  @channel_name_to_id = {}

  @pong_received = true

  SlackbotFrd::Log.debug("Done initializing #{self.class}")
end

Instance Attribute Details

#token ⇒ Object

Returns the value of attribute token.



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 26

def token
  @token
end

Instance Method Details

#channel_id_to_name(channel_id) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 265

def channel_id_to_name(channel_id)
  unless @channel_id_to_name && @channel_id_to_name.key?(channel_id)
    refresh_channel_info
  end
  unless @channel_id_to_name.include?(channel_id)
    SlackbotFrd::Log.warn(
      "#{self.class}: Channel id '#{channel_id}' not found"
    )
  end
  @channel_id_to_name[channel_id]
end

#channel_ids(_force_refresh = false) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 233

def channel_ids(_force_refresh = false)
  @user_id_to_name.keys
end

#channel_name_to_id(channel_name) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 277

def channel_name_to_id(channel_name)
  return channel_name if channel_name == :any
  nc = normalize_channel_name(channel_name)
  unless @channel_name_to_id && @channel_name_to_id.key?(nc)
    refresh_channel_info
  end
  unless @channel_name_to_id.include?(nc)
    SlackbotFrd::Log.warn(
      "#{self.class}: Channel name '#{nc}' not found"
    )
  end
  @channel_name_to_id[nc]
end

#channel_names(_force_refresh = false) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 237

def channel_names(_force_refresh = false)
  @channel_name_to_id.keys
end

#delete_message(channel:, timestamp:) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 157

def delete_message(channel:, timestamp:)
  SlackbotFrd::Log.debug("#{self.class}: Deleting message with timestamp '#{timestamp}' from channel '#{channel}'")

  resp = SlackbotFrd::SlackMethods::ChatDelete.delete(
    token: @token,
    channel: channel_name_to_id(channel),
    timestamp: timestamp
  )

  SlackbotFrd::Log.debug("#{self.class}: Received response:  #{resp}")
end

#event_id ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 90

def event_id
  @event_id += 1
  @event_id
end

#im_channel_for_user(user:) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 198

def im_channel_for_user(user:)
  SlackbotFrd::Log.debug(
    "#{self.class}: Opening or retrieving IM channel for user '#{user}'"
  )

  resp = JSON.parse(SlackbotFrd::SlackMethods::ImOpen.openChannel(
    token: @token,
    user: user_name_to_id(user)
  ))

  SlackbotFrd::Log.debug("#{self.class}: Received response:  #{resp}")
  return resp["channel"]["id"] if resp["channel"]
  resp
end

#invite_user(user:, channel:) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 184

def invite_user(user:, channel:)
  SlackbotFrd::Log.debug(
    "#{self.class}: Inviting user '#{user}' to channel '#{channel}'"
  )

  resp = SlackbotFrd::SlackMethods::ChannelsInvite.invite(
    token: @token,
    user: user_name_to_id(user),
    channel: channel_name_to_id(channel)
  )

  SlackbotFrd::Log.debug("#{self.class}: Received response:  #{resp}")
end

#num_users_in_channel(channel) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 221

def num_users_in_channel(channel)
  users_in_channel(channel).count
end

#on_channel_joined(user: :any, channel: :any, &block) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 123

def on_channel_joined(user: :any, channel: :any, &block)
  wrap_user_or_channel_lookup_on_callback('on_message_channel_joined', user, channel) do
    u = user_name_to_id(user)
    c = channel_name_to_id(channel)
    @on_channel_joined_callbacks.add(user: u, channel: c, callback: block)
  end
end

#on_channel_left(user: :any, channel: :any, &block) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 113

def on_channel_left(user: :any, channel: :any, &block)
  wrap_user_or_channel_lookup_on_callback('on_message_channel_left', user, channel) do
    @on_channel_left_callbacks.add(
      user: user_name_to_id(user),
      channel: channel_name_to_id(channel),
      callback: block
    )
  end
end

#on_close(&block) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 99

def on_close(&block)
  @on_disconnected_callbacks.push(block)
end

#on_connected(&block) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 95

def on_connected(&block)
  @on_connected_callbacks.push(block)
end

#on_message(user: :any, channel: :any, &block) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 103

def on_message(user: :any, channel: :any, &block)
  wrap_user_or_channel_lookup_on_callback('on_message', user, channel) do
    @on_message_callbacks.add(
      user: user_name_to_id(user),
      channel: channel_name_to_id(channel),
      callback: block
    )
  end
end

#post_reaction(name:, channel: nil, timestamp: nil) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 169

def post_reaction(name:, channel: nil, timestamp: nil)
  SlackbotFrd::Log.debug(
    "#{self.class}: Posting reaction '#{name}' to channel '#{channel}' with timestamp '#{timestamp}'"
  )

  resp = SlackbotFrd::SlackMethods::ReactionsAdd.add(
    token: @token,
    name: name,
    channel: channel_name_to_id(channel),
    timestamp: timestamp
  )

  SlackbotFrd::Log.debug("#{self.class}: Received response:  #{resp}")
end

#send_im(user:, message:, username: nil, avatar_emoji: nil, avatar_url: nil) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 131

def send_im(user:, message:, username: nil, avatar_emoji: nil, avatar_url: nil)
  send_message(
    channel: im_channel_for_user(user),
    message: message,
    username: username,
    avatar_emoji: avatar_emoji,
    avatar_url: avatar_url,
    channel_is_id: true
  )
end

#send_message(channel:, message:, username: nil, avatar_emoji: nil, avatar_url: nil, channel_is_id: false) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 142

def send_message(channel:, message:, username: nil, avatar_emoji: nil, avatar_url: nil, channel_is_id: false)
  if username && (avatar_emoji || avatar_url)
    send_message_as_bot(
      channel: channel,
      message: message,
      username: username,
      avatar_emoji: avatar_emoji,
      avatar_url: avatar_url,
      channel_id_id: channel_is_id
    )
  else
    send_message_as_user(channel: channel, message: message, channel_is_id: channel_is_id)
  end
end

#start ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 53

def start
  # Write pid file
  File.write(PID_FILE_NAME, "#{Process.pid}")

  SlackbotFrd::Log.info("#{self.class}: starting event machine")

  EM.run do
    begin
      wss_url = SlackbotFrd::SlackMethods::RtmStart.wss_url(@token)
    rescue SocketError => e
      log_and_add_to_error_file(socket_error_message(e))
    end

    unless wss_url
      log_and_add_to_error_file(
        'No Real Time stream opened by slack.  Check for network connection and correct authentication token'
      )
      return
    end
    @ws = Faye::WebSocket::Client.new(wss_url)

    @on_connected_callbacks.each    { |callback| @ws.on(:open,  &callback) }
    @on_disconnected_callbacks.each { |callback| @ws.on(:close, &callback) }
    @ws.on(:message) { |event| process_message_received(event) }

    # Clean up our pid file
    @ws.on(:close) { |_event| File.delete(PID_FILE_NAME) }

    # This should ensure that we get a pong back at least every
    # PING_INTERVAL_SECONDS, otherwise we die because our
    # connection is probably toast
    EM.add_periodic_timer(PING_INTERVAL_SECONDS) { check_ping }
  end

  SlackbotFrd::Log.info("#{self.class}: event machine loop terminated")
end

#user_id_to_name(user_id) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 241

def user_id_to_name(user_id)
  return user_id if user_id == :any || user_id == :bot
  unless @user_id_to_name && @user_id_to_name.key?(user_id)
    
  end
  unless @user_id_to_name.include?(user_id)
    SlackbotFrd::Log.warn("#{self.class}: User id '#{user_id}' not found")
  end
  @user_id_to_name[user_id]
end

#user_ids(_force_refresh = false) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 225

def user_ids(_force_refresh = false)
  @user_id_to_name.keys
end

#user_name_to_id(user_name) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 252

def user_name_to_id(user_name)
  return user_name if user_name == :any || user_name == :bot
  unless @user_name_to_id && @user_name_to_id.key?(user_name)
    
  end
  unless @user_name_to_id.include?(user_name)
    SlackbotFrd::Log.warn(
      "#{self.class}: User name '#{user_name}' not found"
    )
  end
  @user_name_to_id[user_name]
end

#user_names(_force_refresh = false) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 229

def user_names(_force_refresh = false)
  @user_name_to_id.keys
end

#users_in_channel(channel) ⇒ Object 



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# File 'lib/slackbot_frd/lib/slack_connection.rb', line 213

def users_in_channel(channel)
  a = SlackMethods::ChannelsInfo.members(
    token: @token,
    channel: channel_name_to_id(channel)
  )
  a.map{ |id| user_id_to_name(id) }
end