module ThemeHelper def render_theme_with_context(context = {}) klass = Class.new do def initialize(hash = {}) if hash.is_a? ApplicationRecord x = [ :primary_color, :primary_text, :danger_color, :danger_text, :success_color, :success_text, :warning_color, :warning_text, :info_color, :info_text, :default_color, :default_text, :panel_color, :panel_text, :link_color, :background_color, :background_text, :background_muted, :input_color, :input_text, :outline_color ] x.each do |v| next if hash[v].nil? self.instance_variable_set "@#{v}", ('#' + ('0000000' + hash[v].to_s(16))[-6, 6]) end elsif hash.is_a? Hash hash.each do |k, v| next unless v.is_a? Integer self.instance_variable_set "@#{k}", ('#' + ('0000000' + hash[k].to_s(16))[-6, 6]) end end end def render style = if Rails.env == 'production' :compressed else :compact end.freeze css = if $__THEME_CSS_CACHE_V1.nil? File.read Rails.root.join 'app/views/user/theme.css.scss.erb' else $__THEME_CSS_CACHE_V1 end erb = ERB.new css sass = Sass::Engine.new erb.result(binding), style: style, cache: false, load_paths: [], syntax: :scss return sass.render.to_s end end return klass.new(context).render end def render_theme theme_attribute_map = { 'primary_color' => 'primary', 'primary_text' => 'primary-text', 'danger_color' => 'danger', 'danger_text' => 'danger-text', 'warning_color' => 'warning', 'warning_text' => 'warning-text', 'info_color' => 'info', 'info_text' => 'info-text', 'success_color' => 'success', 'success_text' => 'success-text', 'panel_color' => 'raised-bg', 'background_color' => 'background', 'background_text' => 'body-text', 'input_color' => 'input-bg', 'input_text' => 'input-text' } theme = get_active_theme if theme body = ":root {\n" theme.attributes.each do |k, v| if theme_attribute_map[k] if k.include? "text" hex = get_hex_color_from_theme_value(v) body += "\t--#{theme_attribute_map[k]}: #{get_decimal_triplet_from_hex(hex)};\n" else body += "\t--#{theme_attribute_map[k]}: ##{get_hex_color_from_theme_value(v)};\n" end end end body += "}" content_tag(:style, body) end end def get_active_theme if current_user&.theme current_user.theme elsif @user&.theme if user_signed_in? @user.theme unless !current_user&.show_foreign_themes? else @user.theme end end end def get_hex_color_from_theme_value(value) ('0000000' + value.to_s(16))[-6, 6] end def get_decimal_triplet_from_hex(value) hexes = value.split(/(.{2})/).reject { |c| c.empty? } hexes.map(&:hex).join(", ") end end