class ChefCLI::Policyfile::LocalLockFetcher

def abs_path
  Pathname.new(source_options[:path]).expand_path(storage_config.relative_paths_root)
end

def apply_locked_source_options(options_from_lock)
  # There are no options the lock could provide
end

def content
  IO.read(path)
end

def errors
  error_messages = []
  [:path].each do |key|
    error_messages << "include_policy for #{name} is missing key #{key}" unless source_options[key]
  end
  error_messages
end

def initialize(name, source_options, storage_config)
  @name = name
  @source_options = source_options
  @storage_config = storage_config
end

def lock_data
  FFI_Yajl::Parser.new.parse(content).tap do |data|
    validate_revision_id(data["revision_id"], source_options)
    data["cookbook_locks"].each do |cookbook_name, cookbook_lock|
      cookbook_path = cookbook_lock["source_options"]["path"]
      unless cookbook_path.nil?
        cookbook_lock["source_options"]["path"] = transform_path(cookbook_path)
      end
    end
  end
end

def path
  @path ||= begin
    path = abs_path
    if path.directory?
      path = path.join("#{name}.lock.json")
      unless path.file?
        raise ChefCLI::LocalPolicyfileLockNotFound.new(
          "Expected to find file #{name}.lock.json inside #{source_options[:path]}. If the file name is different than this, provide the file name as part of the path."
        )
      end
    else
      unless path.file?
        raise ChefCLI::LocalPolicyfileLockNotFound.new(
          "The provided path #{source_options[:path]} does not exist."
        )
      end
    end
    path
  end
end

def source_options_for_lock
  source_options
end

def transform_path(path_to_transform)
  cur_path = Pathname.new(storage_config.relative_paths_root)
  include_path = Pathname.new(path).dirname
  include_path.relative_path_from(cur_path).join(path_to_transform).to_s
end

def valid?
  errors.empty?
end