aboutsummaryrefslogtreecommitdiff
path: root/dinobot.rb
blob: 690a38442786ce1cde5bdbfc5d51927e092e0922 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
require 'socket'
require 'timeout'

module Dinobot
  class Bot
    attr_accessor :trigger
    attr_reader :server, :port, :nick, :pass, :modules, :channels

    def initialize(server, port, nick, pass=nil, &block)
      @server = server
      @port = port
      @nick = nick
      @pass = pass

      @trigger = '!'

      @socket = nil
      @modules = Hash.new
      @channels = Array.new

      instance_eval(&block) if block_given?
    end

    def connect
      @socket = TCPSocket.new(@server, @port)

      out "PASS #{@pass}" if @pass
      out "NICK #{@nick}"
      out "USER #{@nick} 0 * :#{@nick}"

      @channels.each do |channel|
        join channel
      end
    end

    def connected?
      !(@socket.nil? || @socket.closed?)
    end

    def run
      log :info, "Connecting to #{@server}:#{@port}."
      connect

      while str = @socket.gets
        str.chomp!
        log :in, str.inspect

        Thread.new do
          begin
            Timeout.timeout(30) do
              parse_line(str)
            end
          rescue => e
            log :error, "Error parsing line. (#{e})"
            puts e.backtrace
          end
        end
      end

      log :info, 'Disconnected.'
      @socket.close
    end

    def parse_line(str)
      out str.sub('PING', 'PONG') if str =~ /^PING /

      if str =~ /(\S+) PRIVMSG (\S+) :(.*)/
        user, channel, message = str.scan(/(\S+) PRIVMSG (\S+) :(.*)/).first

        return unless message =~ /^#{Regexp.escape(@trigger)}/
        message.sub!(@trigger, '')

        methods = parse_command(user, channel, message)

        run_methods(methods) if methods.is_a?(Array)
      end
    end

    def parse_command(user, channel, command, prev=nil)
      command, remainder = command.split(' | ', 2)
      mod = command.scan(/\A\S+/).first.downcase.intern

      if prev.nil?
        methods = @modules[mod].call(user, channel, command)
      else
        methods = []

        prev.each do |p|
          if p.first == :say
            m = @modules[mod].call(user, p[1], "#{command} #{p[2]}")

            methods.concat(m) if m.is_a?(Array)
          else
            methods << p
          end
        end
      end

      remainder ? parse_command(user, channel, remainder, methods) : methods
    end

    def run_methods(methods)
      methods.each do |method|
        log :info, "Executing method: #{method.inspect}"

        case method.first
        when :say
          send(*method) if method.length == 3
        when :join, :part
          send(*method) if method.length == 2
        end
      end
    end

    def out(str)
      return unless connected?

      log :out, str.inspect

      @socket.puts str
    end

    def say(channel, message)
      out "PRIVMSG #{channel} :#{message}"
    end

    def join(channel)
      @channels << channel unless @channels.include?(channel)

      out "JOIN #{channel}"
    end

    def part(channel)
      @channels.delete(channel)

      out "PART #{channel}"
    end

    def load_module(mod)
      mod = mod.downcase.intern
      log :info, "Loading module: #{mod}"

      begin
        load "#{mod}.rb"

        m = Dinobot.const_get(Dinobot.constants.find { |x| x.downcase == mod })
        @modules[mod] = m.new(self)

        log :info, "Loaded module: #{mod} (#{m})"
      rescue LoadError, StandardError => e
        log :error, "Failed to load module: #{mod} (#{e})"
      end
    end

    def unload_module(mod)
      mod = mod.downcase.intern
      log :info, "Unloading module: #{mod}"

      unless @modules.has_key?(mod)
        log :error, "Failed to unload module: #{mod} (module not loaded)"
        return
      end

      @modules.delete(mod)

      Dinobot.send(
        :remove_const,
        Dinobot.constants.find { |x| x.downcase == mod }
      )
    end

    def log(type, str)
      case type
      when :in
        puts "\e[32m<<\e[0m #{str}"
      when :out
        puts "\e[36m>>\e[0m #{str}"
      when :error
        puts "\e[31m!!\e[0m #{str}"
      when :info
        puts "\e[33m==\e[0m #{str}"
      end
    end
  end
end