class Specks

# File lib/specks.rb, line 38
def run_all
  modules = Dir.entries(MODULES_DIR).reject {|e| e == '.' || e == '..'}
  modules.each {|name| run_one(name)}
end

# File lib/specks.rb, line 11
def run_one(mod)

  recipe_path = "#{MODULES_DIR}/#{mod}/recipe.yml"
  if File.exists?(recipe_path)
    recipe = YAML.load_file(recipe_path)

    comment = recipe[:comment] || '#'

    (recipe[:export] || {}).each do |file|
      export mod, file, comment
    end

    (recipe[:symlink] || {}).each do |file, dest|
      export mod, file, comment
      symlink mod, file, dest
    end

    (recipe[:inject] || {}).each do |file, dest|
      inject mod, file, dest, comment
    end

  else
    puts "No recipe.yml for #{mod}, skipping"
  end

end

# File lib/specks.rb, line 45
def bannerise(source, mod, file, action, comment)
  "#{comment} -- [specks:start #{action} #{file}] --\n" +
    "#{source.chomp}\n" +
    "#{comment} -- [specks:end #{action} #{file}] --\n"
end

# File lib/specks.rb, line 51
def export(mod, file, comment)
  FileUtils.mkdir_p("#{EXPORTS_DIR}/#{mod}") unless File.exists?("#{EXPORTS_DIR}/#{mod}")

  puts "Exporting #{file} for #{mod}"
  if File.directory?("#{MODULES_DIR}/#{mod}/#{file}")
    # TODO: no banner?
    FileUtils.cp_r("#{MODULES_DIR}/#{mod}/#{file}",
      "#{EXPORTS_DIR}/#{mod}/#{file}")
  else
    source = File.read("#{MODULES_DIR}/#{mod}/#{file}")
    File.open("#{EXPORTS_DIR}/#{mod}/#{file}", 'w') do |f|
      # TODO: run through erb ?
      # add banner at the beginning and end
      bannered = bannerise(source, mod, file, 'export', comment)
      f.write(bannered)
    end
  end
end

# File lib/specks.rb, line 86
def inject(mod, file, dest, comment)
  dest_path = File.expand_path(dest)
  content = File.read("#{MODULES_DIR}/#{mod}/#{file}")

  bannered = bannerise(content, mod, file, 'inject', comment)

  # TODO: open dest, look for banner
  # TODO: if none, inject with banner
  # TODO: if found, replace within banner

  puts "Inject #{file} for #{mod} in #{dest}"
  File.open(dest_path, 'w') do |f|
    f.write(bannered)
  end
end

# File lib/specks.rb, line 70
def symlink(mod, file, dest)
  dest_path = File.expand_path(dest)
  if File.exists?(dest_path) && ! File.symlink?(dest_path)
    # TODO: iff ! symlink pointing to the same place
    puts "Skipping symlinking to #{dest}, file exists"
  else
    # TODO: check if file pristine, i.e. nothing before/after banner
    puts "Symlink #{file} for #{mod} to #{dest}"

    FileUtils.mkdir_p File.dirname(dest_path)
    FileUtils.rm_rf(dest_path)
    FileUtils.ln_s("#{EXPORTS_DIR}/#{mod}/#{file}",
      dest_path)
  end
end