module Dotstrap

# File lib/dotstrap.rb, line 79
def config_file(shell = shell_name)
  File.join(config_home, "config.#{shell}")
end

# File lib/dotstrap.rb, line 25
def config_home
  return ENV['DOTSTRAP_CONFIG_DIR'] if ENV.has_key?('DOTSTRAP_CONFIG_DIR')

  config_dir = ENV.fetch('XDG_CONFIG_HOME', Dir.home)
  if config_dir == Dir.home
    File.join(config_dir, '.config', 'dotstrap')
  else
    File.join(config_dir, 'dotstrap')
  end
end

# File lib/dotstrap.rb, line 83
def installed_repo_paths
  Dir[File.join(config_home, '**')]
end

# File lib/dotstrap.rb, line 87
def installed_repos
  repos = []
  installed_repo_paths.each do |repo_path|
    # next unless repo_path.include?('-') && File.directory?(repo_path)
    repo = File.basename(repo_path)
    repos << repo.sub(/-/,'/')
  end
  repos
end

# File lib/dotstrap.rb, line 73
def shell_config_home(shell = shell_name)
  h = Pathname.new(shell_profile(shell)).parent
  $LOG.debug { "SHELL_CONFIG_HOME:#{h}" }
  h
end

# File lib/dotstrap.rb, line 36
def shell_name
  # FIXME: bad to rely on SHELL environment variable to determine shell?
  shell =
    case ENV['SHELL']
    when %r{/(ba)?sh} then
      'bash'
    when %r{/zsh} then
      'zsh'
    when %r{/fish} then
      'fish'
    else
      raise RuntimeError, ENV['SHELL']
    end
  $LOG.debug { "SHELL_NAME:#{shell}" }
  shell
end

# File lib/dotstrap.rb, line 53
def shell_profile(shell = shell_name)
  profile =
    case shell
    when 'bash' then
      bash_profile = ''
      ['.bash_profile' '.profile'].each do |file|
        bash_profile = File.join(Dir.home, file)
        break if File.exist?(bash_profile)
      end
      bash_profile
    when 'zsh' then
      File.join(Dir.home, '.zshrc')
    when 'fish' then
      File.join(Dir.home, '.config', 'fish', 'config.fish')
      # File.exist?(file) ? file : fail ShellProfileError, "Fish shell config file not found
    end
  $LOG.debug { "SHELL_PROFILE:#{profile}" }
  profile.strip unless profile.nil?
end