class Bundler::Source::Path

def self.from_lock(options)
  new(options.merge("path" => options.delete("remote")))
end

def app_cache_dirname
  name
end

def app_cache_path(custom_path = nil)
  @app_cache_path ||= Bundler.app_cache(custom_path).join(app_cache_dirname)
end

def cache(spec, custom_path = nil)
  app_cache_path = app_cache_path(custom_path)
  return unless Bundler.feature_flag.cache_all?
  return if expand(@original_path).to_s.index(root_path.to_s + "/") == 0
  unless @original_path.exist?
    raise GemNotFound, "Can't cache gem #{version_message(spec)} because #{self} is missing!"
  end
  FileUtils.rm_rf(app_cache_path)
  FileUtils.cp_r("#{@original_path}/.", app_cache_path)
  FileUtils.touch(app_cache_path.join(".bundlecache"))
end

def cached!
  @local_specs = nil
  @allow_cached = true
end

def eql?(other)
  return unless other.class == self.class
  expanded_original_path == other.expanded_original_path &&
    version == other.version
end

def expand(somepath)
  if Bundler.current_ruby.jruby? # TODO: Unify when https://github.com/rubygems/bundler/issues/7598 fixed upstream and all supported jrubies include the fix
    somepath.expand_path(root_path).expand_path
  else
    somepath.expand_path(root_path)
  end
rescue ArgumentError => e
  Bundler.ui.debug(e)
  raise PathError, "There was an error while trying to use the path " \
    "`#{somepath}`.\nThe error message was: #{e.message}."
end

def expanded_original_path
  @expanded_original_path ||= expand(original_path)
end

def expanded_path
  @expanded_path ||= expand(path)
end

def generate_bin(spec, options = {})
  gem_dir = Pathname.new(spec.full_gem_path)
  # Some gem authors put absolute paths in their gemspec
  # and we have to save them from themselves
  spec.files = spec.files.map do |path|
    next path unless /\A#{Pathname::SEPARATOR_PAT}/.match?(path)
    next if File.directory?(path)
    begin
      Pathname.new(path).relative_path_from(gem_dir).to_s
    rescue ArgumentError
      path
    end
  end.compact
  installer = Path::Installer.new(
    spec,
    :env_shebang => false,
    :disable_extensions => options[:disable_extensions],
    :build_args => options[:build_args],
    :bundler_extension_cache_path => extension_cache_path(spec)
  )
  installer.post_install
rescue Gem::InvalidSpecificationException => e
  Bundler.ui.warn "\n#{spec.name} at #{spec.full_gem_path} did not have a valid gemspec.\n" \
                  "This prevents bundler from installing bins or native extensions, but " \
                  "that may not affect its functionality."
  if !spec.extensions.empty? && !spec.email.empty?
    Bundler.ui.warn "If you need to use this package without installing it from a gem " \
                    "repository, please contact #{spec.email} and ask them " \
                    "to modify their .gemspec so it can work with `gem build`."
  end
  Bundler.ui.warn "The validation message from RubyGems was:\n  #{e.message}"
end

def has_app_cache?
  SharedHelpers.in_bundle? && app_cache_path.exist?
end

def hash
  [self.class, expanded_path, version].hash
end

def initialize(options)
  @options = options.dup
  @glob = options["glob"] || DEFAULT_GLOB
  @allow_cached = false
  @allow_remote = false
  @root_path = options["root_path"] || root
  if options["path"]
    @path = Pathname.new(options["path"])
    expanded_path = expand(@path)
    @path = if @path.relative?
      expanded_path.relative_path_from(root_path.expand_path)
    else
      expanded_path
    end
  end
  @name    = options["name"]
  @version = options["version"]
  # Stores the original path. If at any point we move to the
  # cached directory, we still have the original path to copy from.
  @original_path = @path
end

def install(spec, options = {})
  using_message = "Using #{version_message(spec, options[:previous_spec])} from #{self}"
  using_message += " and installing its executables" unless spec.executables.empty?
  print_using_message using_message
  generate_bin(spec, :disable_extensions => true)
  nil # no post-install message
end

def load_gemspec(file)
  return unless spec = Bundler.load_gemspec(file)
  Bundler.rubygems.set_installed_by_version(spec)
  spec
end

def load_spec_files
  index = Index.new
  if File.directory?(expanded_path)
    # We sort depth-first since `<<` will override the earlier-found specs
    Gem::Util.glob_files_in_dir(@glob, expanded_path).sort_by {|p| -p.split(File::SEPARATOR).size }.each do |file|
      next unless spec = load_gemspec(file)
      spec.source = self
      # Validation causes extension_dir to be calculated, which depends
      # on #source, so we validate here instead of load_gemspec
      validate_spec(spec)
      index << spec
    end
    if index.empty? && @name && @version
      index << Gem::Specification.new do |s|
        s.name     = @name
        s.source   = self
        s.version  = Gem::Version.new(@version)
        s.platform = Gem::Platform::RUBY
        s.summary  = "Fake gemspec for #{@name}"
        s.relative_loaded_from = "#{@name}.gemspec"
        s.authors = ["no one"]
        if expanded_path.join("bin").exist?
          executables = expanded_path.join("bin").children
          executables.reject! {|p| File.directory?(p) }
          s.executables = executables.map {|c| c.basename.to_s }
        end
      end
    end
  else
    message = String.new("The path `#{expanded_path}` ")
    message << if File.exist?(expanded_path)
      "is not a directory."
    else
      "does not exist."
    end
    raise PathError, message
  end
  index
end

def local_specs(*)
  @local_specs ||= load_spec_files
end

def lockfile_path
  return relative_path(original_path) if original_path.absolute?
  expand(original_path).relative_path_from(root)
end

def name
  File.basename(expanded_path.to_s)
end

def relative_path(path = self.path)
  if path.to_s.start_with?(root_path.to_s)
    return path.relative_path_from(root_path)
  end
  path
end

def remote!
  @local_specs = nil
  @allow_remote = true
end

def root
  Bundler.root
end

def specs
  if has_app_cache?
    @path = app_cache_path
    @expanded_path = nil # Invalidate
  end
  local_specs
end

def to_lock
  out = String.new("PATH\n")
  out << "  remote: #{lockfile_path}\n"
  out << "  glob: #{@glob}\n" unless @glob == DEFAULT_GLOB
  out << "  specs:\n"
end

def to_s
  "source at `#{@path}`"
end

def validate_spec(spec)
  Bundler.rubygems.validate(spec)
end