class NickFallbacksPlugin

# File plugins/nick_fallbacks.rb, line 35
def self.apply!(bot)
  config = config_for(bot)
  return [] if config.empty?

  nicklen = nicklen_for(bot)
  nicks = expanded_nicks(config, nicklen: nicklen)
  return [] if nicks.empty?

  bot.config.nicks = nicks
  preferred = config[:preferred].to_s.strip
  bot.nick = preferred if !preferred.empty? && preferred != bot.nick && nicks.include?(preferred)
  nicks
end

# File plugins/nick_fallbacks.rb, line 17
def self.config_for(bot)
  bot.config.shared[:nick_fallbacks] || {}
end

# File plugins/nick_fallbacks.rb, line 25
def self.expanded_nicks(config, nicklen:)
  NickFallbacks.expand(
    preferred: config[:preferred],
    bases: config[:bases],
    static: config[:static],
    suffix: config[:suffix] || NickFallbacks::DEFAULT_SUFFIX,
    nicklen: nicklen
  )
end

# File plugins/nick_fallbacks.rb, line 21
def self.nicklen_for(bot)
  NickFallbacks.numeric_nicklen(bot.irc.isupport["NICKLEN"])
end

# File plugins/nick_fallbacks.rb, line 49
def self.try_next_configured_nick!(bot, rejected_nick)
  return nil unless bot.respond_to?(:generate_next_nick!)

  next_nick = bot.generate_next_nick!(rejected_nick.to_s)
  bot.nick = next_nick
  next_nick
end

# File plugins/nick_fallbacks.rb, line 61
def on_erroneous_nickname(m)
  self.class.try_next_configured_nick!(bot, m.params[1])
end

# File plugins/nick_fallbacks.rb, line 57
def on_isupport(_m)
  self.class.apply!(bot)
end