require 'digest/sha1' require 'fileutils' require_dependency 'plugin/metadata' require_dependency 'plugin/auth_provider' class Plugin::Instance attr_reader :auth_providers, :assets, :styles attr_accessor :path, :metadata def self.find_all(parent_path) [].tap { |plugins| # also follows symlinks - http://stackoverflow.com/q/357754 Dir["#{parent_path}/**/*/**/plugin.rb"].each do |path| source = File.read(path) metadata = Plugin::Metadata.parse(source) plugins << self.new(metadata, path) end } end def initialize(metadata=nil, path=nil) @metadata = metadata @path = path @assets = [] end def name metadata.name end # will make sure all the assets this plugin needs are registered def generate_automatic_assets! paths = [] automatic_assets.each do |path, contents| unless File.exists? path ensure_directory path File.open(path,"w") do |f| f.write(contents) end end paths << path end delete_extra_automatic_assets(paths) paths end def delete_extra_automatic_assets(good_paths) return unless Dir.exists? auto_generated_path filenames = good_paths.map{|f| File.basename(f)} # nuke old files Dir.foreach(auto_generated_path) do |p| next if [".", ".."].include?(p) next if filenames.include?(p) File.delete(auto_generated_path + "/#{p}") end end def ensure_directory(path) dirname = File.dirname(path) unless File.directory?(dirname) FileUtils.mkdir_p(dirname) end end def auto_generated_path File.dirname(path) << "/auto_generated" end def after_initialize(&block) @after_initialize ||= [] @after_initialize << block end def notify_after_initialize if @after_initialize @after_initialize.each do |callback| callback.call end end end def register_css(style) @styles ||= [] @styles << style end def register_javascript(js) @javascripts ||= [] @javascripts << js end def register_asset(file, opts=nil) full_path = File.dirname(path) << "/assets/" << file assets << [full_path, opts] end def automatic_assets css = "" js = "" css = @styles.join("\n") if @styles js = @javascripts.join("\n") if @javascripts unless auth_providers.blank? auth_providers.each do |auth| overrides = "" overrides = ", titleOverride: '#{auth.title}'" if auth.title overrides << ", messageOverride: '#{auth.message}'" if auth.message overrides << ", frameWidth: '#{auth.frame_width}'" if auth.frame_width overrides << ", frameHeight: '#{auth.frame_height}'" if auth.frame_height js << "Discourse.LoginMethod.register(Discourse.LoginMethod.create({name: '#{auth.name}'#{overrides}}));\n" if auth.glyph css << ".btn-social.#{auth.name}:before{ content: '#{auth.glyph}'; }\n" end if auth.background_color css << ".btn-social.#{auth.name}{ background: #{auth.background_color}; }\n" end end end # Generate an IIFE for the JS js = "(function(){#{js}})();" if js.present? result = [] result << [css, 'css'] if css.present? result << [js, 'js'] if js.present? result.map do |asset, extension| hash = Digest::SHA1.hexdigest asset ["#{auto_generated_path}/plugin_#{hash}.#{extension}", asset] end end # note, we need to be able to parse seperately to activation. # this allows us to present information about a plugin in the UI # prior to activations def activate! self.instance_eval File.read(path), path if auto_assets = generate_automatic_assets! assets.concat auto_assets.map{|a| [a]} end unless assets.blank? register_assets! # TODO possibly amend this to a rails engine Rails.configuration.assets.paths << auto_generated_path Rails.configuration.assets.paths << File.dirname(path) + "/assets" end public_data = File.dirname(path) + "/public" if Dir.exists?(public_data) target = Rails.root.to_s + "/public/plugins/" `mkdir -p #{target}` target << name.gsub(/\s/,"_") # TODO a cleaner way of registering and unregistering `rm -f #{target}` `ln -s #{public_data} #{target}` end end def auth_provider(opts) @auth_providers ||= [] provider = Plugin::AuthProvider.new [:glyph, :background_color, :title, :message, :frame_width, :frame_height, :authenticator].each do |sym| provider.send "#{sym}=", opts.delete(sym) end @auth_providers << provider end # shotgun approach to gem loading, in future we need to hack bundler # to at least determine dependencies do not clash before loading # # Additionally we want to support multiple ruby versions correctly and so on # # This is a very rough initial implementation def gem(name, version, opts = {}) gems_path = File.dirname(path) + "/gems/#{RUBY_VERSION}" spec_path = gems_path + "/specifications" spec_file = spec_path + "/#{name}-#{version}.gemspec" unless File.exists? spec_file command = "gem install #{name} -v #{version} -i #{gems_path} --no-document --ignore-dependencies" if opts[:source] command << " --source #{opts[:source]}" end puts command puts `#{command}` end if File.exists? spec_file spec = Gem::Specification.load spec_file spec.activate unless opts[:require] == false require opts[:require_name] ? opts[:require_name] : name end else puts "You are specifying the gem #{name} in #{path}, however it does not exist!" exit(-1) end end protected def register_assets! assets.each do |asset, opts| if asset =~ /\.js$|\.js\.erb$/ if opts == :admin DiscoursePluginRegistry.admin_javascripts << asset else if opts == :server_side DiscoursePluginRegistry.server_side_javascripts << asset end DiscoursePluginRegistry.javascripts << asset end elsif asset =~ /\.css$|\.scss$/ if opts == :mobile DiscoursePluginRegistry.mobile_stylesheets << asset elsif opts == :desktop DiscoursePluginRegistry.desktop_stylesheets << asset elsif opts == :variables DiscoursePluginRegistry.sass_variables << asset else DiscoursePluginRegistry.stylesheets << asset end elsif asset =~ /\.js\.handlebars$/ DiscoursePluginRegistry.handlebars << asset end end end end