class SonicPi

# File lib/sonic_pi.rb, line 9
def initialize(port=nil)
  @port = port || find_port
end

# File lib/sonic_pi.rb, line 18
def run(command)
  send_command(RUN_COMMAND, command)
end

# File lib/sonic_pi.rb, line 22
def stop
  send_command(STOP_COMMAND)
end

# File lib/sonic_pi.rb, line 26
def test_connection!
  begin
    socket = UDPSocket.new
    socket.bind(nil, @port)
    abort("ERROR: Sonic Pi is not listening on #{@port} - is it running?")
  rescue
    # everything is good
  end
end

# File lib/sonic_pi.rb, line 38
def client
  @client ||= OSC::Client.new(SERVER, @port)
end

# File lib/sonic_pi.rb, line 47
def find_port
  port = 4557

  begin
    log_path = File.join(Dir.home, ".sonic-pi", "log", "server-output.log")

    File.open(log_path, 'r') do |f|
      port_log_entry =
        f.each_line
        .lazy
        .map { |line| line[PORT_LOG_REGEX, "port"] }
        .find { |match| !!match }

      port = port_log_entry.to_i if port_log_entry
    end
  rescue Errno::ENOENT
    # not to worry if the file doesn't exist
  end

  port
end

# File lib/sonic_pi.rb, line 42
def send_command(call_type, command=nil)
  prepared_command = OSC::Message.new(call_type, GUI_ID, command)
  client.send(prepared_command)
end