Class: Slacky::Bot

Inherits:
Object
  • Object
show all
Defined in:
lib/slacky/bot.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config) ⇒ Bot

Returns a new instance of Bot.



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# File 'lib/slacky/bot.rb', line 10

def initialize(config)
  config.log "#{config.name} is starting up..."
  puts "#{config.name} is starting up..."

  @config = config
  @restarts = []
  @command_handlers = []
  @channel_handlers = []
  @im_handlers = []
  @raw_handlers = []
  @cron_handlers = []

  unless @config.slack_api_token
    @config.log "No Slack API token found.  Use environment variable SLACK_API_TOKEN."
    return
  end

  Slack.configure do |slack_cfg|
    slack_cfg.token = @config.slack_api_token
  end

  @client = Slack::RealTime::Client.new

  auth = web_client.auth_test
  if auth.ok
    @slack_id = auth.user_id
    @config.log "Slackbot is active!"
  else
    @config.log "Slackbot is doomed :-("
    return
  end

  @bookkeeper = Bookkeeper.new @client

  Channel.bot = self
  Message.bot = self

  populate_users
  populate_channels
  stay_alive

end

Instance Attribute Details

#client ⇒ Object (readonly)

Returns the value of attribute client.



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# File 'lib/slacky/bot.rb', line 8

def client
  @client
end

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/slacky/bot.rb', line 8

def config
  @config
end

#slack_id ⇒ Object (readonly)

Returns the value of attribute slack_id.



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# File 'lib/slacky/bot.rb', line 8

def slack_id
  @slack_id
end

Instance Method Details

#at(cron, &block) ⇒ Object 



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# File 'lib/slacky/bot.rb', line 83

def at(cron, &block)
  @cron_handlers << { cron: cron, handler: block }
end

#blowup(user, data, args, &respond) ⇒ Object 



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# File 'lib/slacky/bot.rb', line 240

def blowup(user, data, args, &respond)
  respond.call "Tick... tick... tick... BOOM!   Goodbye."
  EM.next_tick do
    raise "kablammo!"
  end
end

#handle_channel(message) ⇒ Object 



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# File 'lib/slacky/bot.rb', line 87

def handle_channel(message)
  handled = false

  if message.command?
    @command_handlers.each do |h|
      command, handler = h.values_at :command, :handler
      next unless command == message.command
      handler.call message
      handled = true
    end
  end

  return if handled

  @channel_handlers.each do |h|
    match, channels, handler = h.values_at :match, :channels, :handler
    accept = Channel.find channels
    next if accept && ! accept.include?(message.channel)
    next if match && ! match === message
    handler.call message
  end
end

#handle_im(message) ⇒ Object 



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# File 'lib/slacky/bot.rb', line 110

def handle_im(message)
  unless message.user.slack_im_id == message.channel.slack_id
    message.user.slack_im_id = message.channel.slack_id
    message.user.save
  end

  handled = false

  @command_handlers.each do |h|
    command, handler = h.values_at :command, :handler
    next unless command == message.command
    handler.call message
    handled = true
  end

  return if handled

  @im_handlers.each do |h|
    match, handler = h.values_at :match, :handler
    next if match && ! match === message
    handler.call message
  end
end

#known_commands ⇒ Object 



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# File 'lib/slacky/bot.rb', line 61

def known_commands
  @command_handlers.map { |ch| ch[:command] }
end

#name ⇒ Object 



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# File 'lib/slacky/bot.rb', line 57

def name
  @config.down_name
end

#on(type, &block) ⇒ Object 



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# File 'lib/slacky/bot.rb', line 65

def on(type, &block)
  @raw_handlers << { type: type, handler: block }
end

#on_command(command, &block) ⇒ Object 



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# File 'lib/slacky/bot.rb', line 69

def on_command(command, &block)
  @command_handlers << { command: command.downcase, handler: block }
end

#on_im(attrs, &block) ⇒ Object 



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# File 'lib/slacky/bot.rb', line 78

def on_im(attrs, &block)
  attrs ||= {}
  @im_handlers << { match: attrs[:match], handler: block }
end

#on_message(attrs, &block) ⇒ Object 



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# File 'lib/slacky/bot.rb', line 73

def on_message(attrs, &block)
  attrs ||= {}
  @channel_handlers << { match: attrs[:match], channels: attrs[:channels], handler: block }
end

#populate_channels ⇒ Object 



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# File 'lib/slacky/bot.rb', line 211

def populate_channels
  print "Getting channels from Slack..."
  resp = web_client.channels_list
  throw resp unless resp.ok
  resp.channels.map do |channel|
    Channel.channel channel
  end

  resp = web_client.groups_list
  throw resp unless resp.ok
  resp.groups.map do |group|
    Channel.group group
  end
  puts " done!"
end

#populate_users ⇒ Object 



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# File 'lib/slacky/bot.rb', line 192

def populate_users
  print "Getting users from Slack..."
  resp = web_client.users_list presence: 1
  throw resp unless resp.ok
  User.invalidate_all_users
  whitelist = @config.whitelist_users || []
  resp.members.map do |member|
    next unless member.profile.email # no bots
    next if member.deleted # no ghosts
    unless whitelist.include?(member.id) || whitelist.include?(member.name) || whitelist.include?("@#{member.name}")
      next if member.is_ultra_restricted # no single channel guests
      next if member.is_restricted # no multi channel guests either
    end
    user = User.find(member.id) || User.new(slack_id: member.id)
    user.populate(member).validate.save
  end
  puts " done!"
end

#run ⇒ Object 



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# File 'lib/slacky/bot.rb', line 134

def run
  @bookkeeper.keep_the_books

  @client.on :message do |data|
    next unless ( user = User.find data.user )
    next unless user.valid?

    channel = Channel.find data.channel
    channel = Channel.im data.channel, user if data.channel =~ /^D/ && ! channel
    next unless channel

    reject = Channel.find @config.slack_reject_channels
    next if reject && reject.find { |c| c.slack_id == data.channel }

    accept = Channel.find @config.slack_accept_channels
    next if accept && ! accept.find { |c| c.slack_id == data.channel }

    message = Message.new(user, channel, data)
    handle_channel message if [ :group, :channel ].include? channel.type
    handle_im      message if [ :im              ].include? channel.type
  end

  @raw_handlers.each do |h|
    type, handler = h.values_at :type, :handler
    @client.on type do |data|
      handler.call data
    end
  end

  @cron_thread ||= Thread.new do
    EM.run do
      @cron_handlers.each do |h|
        cron, handler = h.values_at :cron, :handler
        EM::Cron.schedule cron do |time|
          begin
            handler.call
          rescue => e
            @config.log "An error ocurred inside the Slackbot (in a scheduled block)", e
          end
        end
      end
    end
  end

  puts "#{@config.name} is listening to: #{@config.slack_accept_channels}"

  @client.start!
rescue => e
  @config.log "An error ocurred inside the Slackbot", e
  @restarts << Time.new
  @restarts.shift while (@restarts.length > 3)
  if @restarts.length == 3 and ( Time.new - @restarts.first < 30 )
    @config.log "Too many errors.  Not restarting anymore."
  else
    run
  end
end

#stay_alive ⇒ Object 



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# File 'lib/slacky/bot.rb', line 227

def stay_alive
  at '* * * * *' do
    @client.ping stamp: Time.now.to_f
  end

  on :pong do |data|
    now = Time.now.to_f
    stamp = data.stamp
    delta = now - stamp
    @config.log "Slow ping pong response: #{delta}s" if delta > 5
  end
end

#web_client ⇒ Object 



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# File 'lib/slacky/bot.rb', line 53

def web_client
  @client.web_client
end