class Swagcov::Dotfile

def docs_config
  @docs_config ||= dotfile.dig("docs", "paths")
end

def ignore_path? path, verb:
  return false unless @ignored_config
  ignore_all_path_actions = @ignored_regex.match?(path)
  ignored_verbs =
    @ignored_config.select { |config| config[path]&.is_a?(::Array) }.map(&:values).flatten.map(&:downcase)
  return ignore_all_path_actions if ignored_verbs.empty?
  ignored_verbs.any?(verb.downcase)
end

def ignored_config
  dotfile_routes = dotfile.dig("routes", "paths", "ignore").to_a
  todo_routes = todo_file ? todo_file.dig("routes", "paths", "ignore").to_a : []
  routes = dotfile_routes + todo_routes
  @ignored_config ||= routes.empty? ? nil : routes
end

def initialize basename: ::Swagcov::DOTFILE, todo_basename: ::Swagcov::TODOFILE, skip_todo: false
  @dotfile = load_yaml(basename, required: true)
  raise ::Swagcov::Errors::BadConfiguration, "Invalid config file (#{::Swagcov::DOTFILE})" unless valid?
  @todo_file = load_yaml(todo_basename) unless skip_todo
  @ignored_regex = path_config_regex(ignored_config)
  @only_regex = path_config_regex(only_config)
end

def load_yaml basename, required: false
  pathname = ::Swagcov.project_root.join(basename)
  raise ::Swagcov::Errors::BadConfiguration, "Missing config file (#{basename})" if !pathname.exist? && required
  return unless pathname.exist?
  ::YAML.load_file(pathname)
rescue ::Psych::SyntaxError
  raise ::Swagcov::Errors::BadConfiguration, "Malformed config file (#{basename})"
end

def only_config
  @only_config ||= dotfile.dig("routes", "paths", "only")
end

def only_path_mismatch? path
  @only_config && !@only_regex.match?(path)
end

def path_config_regex path_config
  return unless path_config
  config =
    path_config.map do |path|
      if path.is_a?(::Hash)
        "^#{path.keys.first}$"
      else
        path.chr == "^" ? path : "^#{path}$"
      end
    end
  /#{config.join('|')}/
end

def valid?
  dotfile && docs_config
end