class Riffer::Skills::FilesystemBackend

# File lib/riffer/skills/filesystem_backend.rb, line 13
def initialize(*paths)
  @paths = paths.flatten.map { |p| File.expand_path(p) }
  @skills_cache = nil #: Hash[String, String]?
end

# File lib/riffer/skills/filesystem_backend.rb, line 22
def list_skills
  cache = {} #: Hash[String, String]
  @skills_cache = cache
  frontmatters = [] #: Array[Riffer::Skills::Frontmatter]

  @paths.each do |path|
    next unless File.directory?(path)

    Dir.children(path).sort.each do |dirname|
      dir = File.join(path, dirname)
      skill_file = File.join(dir, SKILL_FILENAME)
      next unless File.directory?(dir) && File.file?(skill_file)

      frontmatter = Riffer::Skills::Frontmatter.parse_frontmatter(File.read(skill_file))

      validate_dirname_matches_name!(dirname, frontmatter.name)
      next if cache.key?(frontmatter.name)

      frontmatters << frontmatter
      cache[frontmatter.name] = dir
    end
  end

  frontmatters
end

# File lib/riffer/skills/filesystem_backend.rb, line 52
def read_skill(name)
  list_skills unless @skills_cache
  cache = @skills_cache #: Hash[String, String]
  dir = cache[name]
  raise Riffer::ArgumentError, "Skill not found: '#{name}'" unless dir

  _, body = Riffer::Skills::Frontmatter.parse(File.read(File.join(dir, SKILL_FILENAME)))
  body
end