module Atom

# File lib/atom/helpers.rb, line 58
def self.get_src_file_by_title(title, src_dir)
  file_title = title.downcase.split.join('_')
  result = Dir.glob("#{Atom::PATH}/source/#{src_dir}/?_#{file_title}.*")
  if result.size == 1
    result.first
  elsif result.size == 0
    raise "Title '#{title}' not found"
  else 
    raise "Ambiguous title '#{title}'"
  end
end

# File lib/atom/helpers.rb, line 2
def self.load_config
  const_set(:PATH, Dir.pwd)
  const_set(:CONFIG, YAML.load_file("#{PATH}/config/atom.yml"))
  const_set(:PRE_PLUGINS, CONFIG['plugins']['pre'])
  const_set(:POST_PLUGINS, CONFIG['plugins']['post'])
  const_set(:PLUGINS, PRE_PLUGINS | POST_PLUGINS)
  
  unless CONFIG[:author]
    begin
      CONFIG[:author] = `git config --get user.name`.chomp
    rescue
      CONFIG[:author] = 'unknown'
    end
  end
end

# File lib/atom/helpers.rb, line 70
def self.name(type, title)
  # TODO abastract file extension to accomodate markup choice
  "#{type.split('').first}_#{title.chomp.downcase.split.join('_')}.textile"
end

# File lib/atom/helpers.rb, line 18
def self.read_yaml(content)
  begin
    if content =~ /^(---\s*\n.*?\n?)^(---\s*$\n?)/m
      content = $'
      data = YAML.load($1)
    end
  rescue => e
    $stderr.puts "YAML Exception: #{e.message}"
  end

  data ||= {}
  return [data, content]
end

# File lib/atom/helpers.rb, line 32
def self.sub_topics(file)
  map_data, content = Atom::read_yaml(File.read(file))
  new_file = ''

  content.split("\n").each do |line|
    if line.match(/^=/)
      depth, title = line.match(/^=(\d)? (.*)/)[1..2]
      depth ||= 0
      data, content = Atom::read_yaml(
        File.read(
          Atom::get_src_file_by_title(title, 'topics')
        ).gsub(/^h(\d)(.*)/) { "h#{($1.to_i + depth.to_i).to_s}#{$2}" }
      )
      
      new_file += "<section class=\"#{data['class']}\" author=\"#{data['author']}\">\n"
      new_file += "\n#{content}\n"
      new_file += "</section>"
      new_file += "\n"
    else
      new_file += "#{line}\n"
    end
  end
    
  return new_file
end

# File lib/atom/helpers.rb, line 76
def self.write_file(path, content)
  file = File.open(path, "w")
  file.write(content)
  file.flush
  file.close
end