class Emoji include ActiveModel::SerializerSupport attr_reader :path attr_accessor :name, :url # whitelist emojis so that new user can post emojis Post::white_listed_image_classes << "emoji" def initialize(path = nil) @path = path end def remove return if path.blank? if File.exists?(path) File.delete(path) rescue nil Emoji.clear_cache end end def self.all Discourse.cache.fetch("all_emojis") { standard | custom } end def self.standard Discourse.cache.fetch("standard_emojis") { load_standard } end def self.aliases Discourse.cache.fetch("aliases_emojis") { load_aliases } end def self.custom Discourse.cache.fetch("custom_emojis") { load_custom } end def self.exists?(name) Emoji[name].present? end def self.[](name) Emoji.custom.detect { |e| e.name == name } end def self.create_from_path(path) extension = File.extname(path) Emoji.new(path).tap do |e| e.name = File.basename(path, ".*") e.url = "#{base_url}/#{e.name}#{extension}" end end def self.create_from_db_item(emoji) name = emoji["aliases"].first filename = "#{name}.png" Emoji.new.tap do |e| e.name = name e.url = "/images/emoji/#{SiteSetting.emoji_set}/#{filename}" end end def self.create_for(file, name) extension = File.extname(file.original_filename) path = "#{Emoji.base_directory}/#{name}#{extension}" # store the emoji FileUtils.mkdir_p(Pathname.new(path).dirname) File.open(path, "wb") { |f| f << file.tempfile.read } # clear the cache Emoji.clear_cache # launch resize job Jobs.enqueue(:resize_emoji, path: path) # return created emoji Emoji[name] end def self.clear_cache Discourse.cache.delete("custom_emojis") Discourse.cache.delete("standard_emojis") Discourse.cache.delete("aliases_emojis") Discourse.cache.delete("all_emojis") end def self.db_file "#{Rails.root}/lib/emoji/db.json" end def self.db @db ||= File.open(db_file, "r:UTF-8") { |f| JSON.parse(f.read) } end def self.load_standard db.map { |emoji| Emoji.create_from_db_item(emoji) } end def self.load_aliases aliases = {} db.select { |emoji| emoji["aliases"].count > 1 } .each { |emoji| aliases[emoji["aliases"][0]] = emoji["aliases"][1..-1] } aliases end def self.load_custom Dir.glob(File.join(Emoji.base_directory, "*.{png,gif}")) .sort .map { |emoji| Emoji.create_from_path(emoji) } end def self.base_directory "public#{base_url}" end def self.base_url db = RailsMultisite::ConnectionManagement.current_db "#{Discourse.base_uri}/uploads/#{db}/_emoji" end end