require_dependency 'distributed_cache' class ColorScheme < ActiveRecord::Base CUSTOM_SCHEMES = { dark: { "primary" => 'dddddd', "secondary" => '222222', "tertiary" => '0f82af', "quaternary" => 'c14924', "header_background" => '111111', "header_primary" => '333333', "highlight" => 'a87137', "danger" => 'e45735', "success" => '1ca551', "love" => 'fa6c8d' } } def self.base_color_scheme_colors base_with_hash = {} base_colors.each do |name, color| base_with_hash[name] = "#{color}" end list = [ { id: 'default', colors: base_with_hash } ] CUSTOM_SCHEMES.each do |k,v| list.push({id: k.to_s, colors: v}) end list end def self.hex_cache @hex_cache ||= DistributedCache.new("scheme_hex_for_name") end attr_accessor :is_base has_many :color_scheme_colors, -> { order('id ASC') }, dependent: :destroy alias_method :colors, :color_scheme_colors before_save do if self.id self.version += 1 end end after_save :publish_discourse_stylesheet after_save :dump_hex_cache after_destroy :dump_hex_cache belongs_to :theme validates_associated :color_scheme_colors BASE_COLORS_FILE = "#{Rails.root}/app/assets/stylesheets/common/foundation/colors.scss" @mutex = Mutex.new def self.base_colors @mutex.synchronize do return @base_colors if @base_colors @base_colors = {} File.readlines(BASE_COLORS_FILE).each do |line| matches = /\$([\w]+):\s*#([0-9a-fA-F]{3}|[0-9a-fA-F]{6})(?:[;]|\s)/.match(line.strip) @base_colors[matches[1]] = matches[2] if matches end end @base_colors end def self.base_color_schemes base_color_scheme_colors.map do |hash| scheme = new(name: I18n.t("color_schemes.#{hash[:id]}"), base_scheme_id: hash[:id]) scheme.colors = hash[:colors].map{|k,v| {name: k.to_s, hex: v.sub("#","")}} scheme.is_base = true scheme end end def self.base return @base_color_scheme if @base_color_scheme @base_color_scheme = new(name: I18n.t('color_schemes.base_theme_name')) @base_color_scheme.colors = base_colors.map { |name, hex| {name: name, hex: hex} } @base_color_scheme.is_base = true @base_color_scheme end # create_from_base will create a new ColorScheme that overrides Discourse's base color scheme with the given colors. def self.create_from_base(params) new_color_scheme = new(name: params[:name]) new_color_scheme.via_wizard = true if params[:via_wizard] new_color_scheme.base_scheme_id = params[:base_scheme_id] colors = CUSTOM_SCHEMES[params[:base_scheme_id].to_sym]&.map do |name, hex| {name: name, hex: hex} end if params[:base_scheme_id] colors ||= base.colors_hashes # Override base values params[:colors].each do |name, hex| c = colors.find {|x| x[:name].to_s == name.to_s} c[:hex] = hex end if params[:colors] new_color_scheme.colors = colors new_color_scheme.save new_color_scheme end def self.lookup_hex_for_name(name) enabled_color_scheme = Theme.where(key: SiteSetting.default_theme_key).first&.color_scheme (enabled_color_scheme || base).colors.find {|c| c.name == name }.try(:hex) || :nil end def self.hex_for_name(name) hex_cache[name] ||= lookup_hex_for_name(name) hex_cache[name] == :nil ? nil : hex_cache[name] end def colors=(arr) @colors_by_name = nil arr.each do |c| self.color_scheme_colors << ColorSchemeColor.new( name: c[:name], hex: c[:hex] ) end end def colors_by_name @colors_by_name ||= self.colors.inject({}) { |sum,c| sum[c.name] = c; sum; } end def clear_colors_cache @colors_by_name = nil end def colors_hashes color_scheme_colors.map do |c| {name: c.name, hex: c.hex} end end def base_colors colors = nil if base_scheme_id && base_scheme_id != "default" colors = CUSTOM_SCHEMES[base_scheme_id.to_sym] end colors || ColorScheme.base_colors end def resolved_colors resolved = ColorScheme.base_colors.dup if base_scheme_id && base_scheme_id != "default" if scheme = CUSTOM_SCHEMES[base_scheme_id.to_sym] scheme.each do |name, value| resolved[name] = value end end end colors.each do |c| resolved[c.name] = c.hex end resolved end def publish_discourse_stylesheet if self.id themes = Theme.where(color_scheme_id: self.id).to_a if themes.present? Stylesheet::Manager.cache.clear themes.each do |theme| theme.notify_scheme_change(_clear_manager_cache = false) end end end end def dump_hex_cache self.class.hex_cache.clear end end # == Schema Information # # Table name: color_schemes # # id :integer not null, primary key # name :string not null # version :integer default(1), not null # created_at :datetime not null # updated_at :datetime not null # via_wizard :boolean default(FALSE), not null # base_scheme_id :string # theme_id :integer #