class FileNameHistory

# File lib/filename_history.rb, line 7
def initialize(name, history = [])
  @history = history.empty? ? [name] : history
  @current = name
end

# File lib/filename_history.rb, line 18
def self.new_from_history(history)
  FileNameHistory.new(history.last,
                      history)
end

# File lib/filename_history.rb, line 56
def changed?
  @history.last != @current
end

# File lib/filename_history.rb, line 74
def current_color
  @current_color || @current
end

# File lib/filename_history.rb, line 70
def last_color
  @last_color || last_name
end

# File lib/filename_history.rb, line 31
def last_name
  @history.last
end

# File lib/filename_history.rb, line 78
def log(where = $stdout)
  return unless changed?
  where.puts(current_color)
  where.puts("-> #{last_color}")
end

# File lib/filename_history.rb, line 27
def original
  @history.first
end

# File lib/filename_history.rb, line 52
def plan_reapplication(name)
  @current = name
end

# File lib/filename_history.rb, line 35
def plan_rename(regexp, replacement)
  new_name = @current.gsub(regexp, replacement)
  if new_name != current
    @current_color = @current.gsub(regexp, '\0'.colorize(:color => :green))
    @last_color = @current.gsub(regexp, replacement.colorize(:color => :cyan))
    @history << new_name
  end
end

# File lib/filename_history.rb, line 44
def plan_rollback
  @history << original
end

# File lib/filename_history.rb, line 23
def present?
  File.exist?(@current)
end

# File lib/filename_history.rb, line 65
def print_history(where = $stdout)
  where.puts(@current)
  where.print "-> #{@history.join("\n-> ")}\n\n"
end

# File lib/filename_history.rb, line 60
def rename
  File.rename("#{@current}", "#{@history.last}")
  @current = @history.last
end

# File lib/filename_history.rb, line 12
def to_hash
  {
    @history.last => @history
  }
end

# File lib/filename_history.rb, line 48
def was_named?(name)
  @history.include? name
end