module BotConsole::LogLine

# File lib/bot_console/log_line.rb, line 19
def condense(raw)
  line = raw.to_s.chomp
  return nil if line.empty?
  return nil if handler_noise?(line)

  if (match = line.match(IRC_LINE_RE))
    return format_irc(
      time: extract_time(line),
      dir: match[1],
      nick: nick_from_prefix(match[2]),
      command: match[3],
      target: match[4],
      body: match[5]
    )
  end

  if (match = line.match(DEBUG_LINE_RE))
    return format_debug(extract_time(line), match[1])
  end

  format_plain(line)
end

# File lib/bot_console/log_line.rb, line 50
def extract_time(line)
  line[TIMESTAMP_RE, 1] || line[/\A\[(\d{2}:\d{2}:\d{2})\]/, 1] || "--:--:--"
end

# File lib/bot_console/log_line.rb, line 100
def format_debug(time, message)
  text = strip_irc(message)
  return nil if text.empty?
  return nil if text.start_with?("#<Cinch::")

  "#{time} !! #{truncate(text, MAX_BODY)}"
end

# File lib/bot_console/log_line.rb, line 76
def format_irc(time:, dir:, nick:, command:, target:, body:)
  text = strip_irc(body)
  case command
  when "PRIVMSG", "NOTICE"
    label = target
    summary = text.empty? ? command : truncate(text, MAX_BODY)
    "#{time} #{dir} #{nick} #{label}: #{summary}"
  when "JOIN"
    "#{time} #{dir} #{nick} -> #{target}"
  when "PART"
    part_msg = text.empty? ? "" : " (#{truncate(text, 80)})"
    "#{time} #{dir} #{nick} <- #{target}#{part_msg}"
  when "QUIT"
    quit_msg = text.empty? ? "" : " #{truncate(text, 80)}"
    "#{time} #{dir} #{nick} quit#{quit_msg}"
  when "NICK"
    "#{time} #{dir} #{nick} nick -> #{target}"
  else
    detail = [command, target, text].reject { |part| part.to_s.empty? }.join(" ")
    "#{time} #{dir} #{nick} #{truncate(detail, MAX_BODY)}"
  end
end

# File lib/bot_console/log_line.rb, line 109
def format_plain(line)
  if (match = line.match(TIMESTAMP_RE))
    time = match[1]
    body = line.sub(TIMESTAMP_RE, "").strip
    body = strip_irc(body)
    return nil if body.empty?

    return "#{time} #{truncate(body, MAX_BODY)}" unless body.start_with?("[")
  end

  plain = strip_irc(line)
  return nil if plain.empty?

  truncate(plain, MAX_BODY)
end

# File lib/bot_console/log_line.rb, line 42
def handler_noise?(line)
  line.match?(HANDLER_NOISE_RE) ||
    line.match?(STOPPING_HANDLER_RE) ||
    line.include?("#<Cinch::Handler") ||
    line.include?("#<Cinch::Pattern")
end

# File lib/bot_console/log_line.rb, line 55
def nick_from_prefix(prefix)
  prefix.to_s.sub(/\A:/, "").split("!", 2).first
end

# File lib/bot_console/log_line.rb, line 60
def strip_irc(text)
  text.to_s
      .gsub(/\x02|\x1d|\x1f|\x16/, "")
      .gsub(/\x03(?:\d{1,2}(?:,\d{1,2})?)?/, "")
      .strip
end

# File lib/bot_console/log_line.rb, line 68
def truncate(text, max)
  str = text.to_s
  return str if str.length <= max

  "#{str[0, max - 1]}…"
end