Update icon downloading code

lib/tasks/icons.rake

@@ -18,29 +18,39 @@ def download_material_icon(icon, weight: 400, filled: false, size: 20)
 end
 
 def find_used_icons
-  icons = Set.new
+  icons_by_weight_and_size = {}
 
-  Dir[Rails.root.join('app', 'javascript', '**', '*.*sx')].map do |path|
+  Dir[Rails.root.join('app', 'javascript', '**', '*.*s*')].map do |path|
     File.open(path, 'r') do |file|
-      pattern = %r{\Aimport .* from '@material-symbols/svg-600/outlined/(?<icon>[^-]*)(?<fill>-fill)?.svg';}
+      pattern = %r{\Aimport .* from 'mastodon/../material-icons/(?<weight>[0-9]+)-(?<size>[0-9]+)px/(?<icon>[^-]*)(?<fill>-fill)?.svg';}
       file.each_line do |line|
         match = pattern.match(line)
         next if match.blank?
 
-        icons << match['icon']
+        weight = match['weight'].to_i
+        size = match['size'].to_i
+
+        icons_by_weight_and_size[weight] ||= {}
+        icons_by_weight_and_size[weight][size] ||= Set.new
+
+        icons_by_weight_and_size[weight][size] << match['icon']
       end
     end
   end
 
-  icons
+  icons_by_weight_and_size
 end
 
 namespace :icons do
   desc 'Download used Material Symbols icons'
   task download: :environment do
-    find_used_icons.each do |icon|
-      download_material_icon(icon)
-      download_material_icon(icon, filled: true)
+    find_used_icons.each do |weight, icons_by_size|
+      icons_by_size.each do |size, icons|
+        icons.each do |icon|
+          download_material_icon(icon, weight: weight, size: size)
+          download_material_icon(icon, weight: weight, size: size, filled: true)
+        end
+      end
     end
   end
 end