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.settings[:cache_all]
  return if expand(@original_path).to_s.index(Bundler.root.to_s) == 0
  unless @original_path.exist?
    raise GemNotFound, "Can't cache gem #{version_message(spec)} because #{to_s} 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!
  @allow_cached = true
end

def eql?(o)
  o.instance_of?(Path) &&
  expanded_path == expand(o.path) &&
  version == o.version
end

def expand(somepath)
  somepath.expand_path(Bundler.root)
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_path
  @expanded_path ||= expand(path)
end

def generate_bin(spec, disable_extensions = false)
  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 |p|
    next if File.directory?(p)
    begin
      Pathname.new(p).relative_path_from(gem_dir).to_s
    rescue ArgumentError
      p
    end
  end.compact
  SharedHelpers.chdir(gem_dir) do
    installer = Path::Installer.new(spec, :env_shebang => false)
    run_hooks(:pre_install, installer)
    installer.build_extensions unless disable_extensions
    run_hooks(:post_build, installer)
    installer.generate_bin
    run_hooks(:post_install, installer)
  end
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
  @glob = options["glob"] || DEFAULT_GLOB
  @allow_cached = false
  @allow_remote = false
  if options["path"]
    @path = Pathname.new(options["path"])
    @path = expand(@path) unless @path.relative?
  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)
  generate_bin(spec, :disable_extensions)
  ["Using #{version_message(spec)} from #{to_s}", nil]
end

def load_spec_files
  index = Index.new
  if File.directory?(expanded_path)
    # We sort depth-first since `<<` will override the earlier-found specs
    Dir["#{expanded_path}/#{@glob}"].sort_by { |p| -p.split(File::SEPARATOR).size }.each do |file|
      spec = Bundler.load_gemspec(file)
      if spec
        spec.loaded_from = file.to_s
        spec.source = self
        index << spec
      end
    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
  elsif File.exist?(expanded_path)
    raise PathError, "The path `#{expanded_path}` is not a directory."
  else
    raise PathError, "The path `#{expanded_path}` does not exist."
  end
  index
end

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

def name
  File.basename(expanded_path.to_s)
end

def relative_path
  if path.to_s.match(%r{^#{Regexp.escape Bundler.root.to_s}})
    return path.relative_path_from(Bundler.root)
  end
  path
end

def remote!
  @allow_remote = true
end

def run_hooks(type, installer)
  hooks_meth = "#{type}_hooks"
  return unless Gem.respond_to?(hooks_meth)
  Gem.send(hooks_meth).each do |hook|
    result = hook.call(installer)
    if result == false
      location = " at #{$1}" if hook.inspect =~ /@(.*:\d+)/
      message = "#{type} hook#{location} failed for #{installer.spec.full_name}"
      raise InstallHookError, message
    end
  end
end

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

def to_lock
  out = "PATH\n"
  out << "  remote: #{relative_path}\n"
  out << "  glob: #{@glob}\n" unless @glob == DEFAULT_GLOB
  out << "  specs:\n"
end

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