Do not use ActiveStorage variants, process original avatar

Variants are currently broken. So we process the original file with the
most common avatar dimensions and stripping metadata, then hash and
upload only that version.

app/models/user.rb

@@ -56,6 +56,7 @@ class User < ApplicationRecord
   validates_length_of :display_name, minimum: 3, maximum: 35, allow_blank: true,
                                      if: -> { defined?(@display_name) }
 
+
   validate :acceptable_avatar
 
   validate :acceptable_pgp_key_format, if: -> { defined?(@pgp_pubkey) && @pgp_pubkey.present? }
@@ -83,6 +84,10 @@ class User < ApplicationRecord
          :timeoutable,
          :rememberable
 
+  #
+  # Methods
+  #
+
   def ldap_before_save
     self.email = Devise::LDAP::Adapter.get_ldap_param(self.cn, "mail").first
     self.ou    = dn.split(',')
@@ -165,23 +170,19 @@ class User < ApplicationRecord
     @display_name ||= ldap_entry[:display_name]
   end
 
-  def avatar_base64(size: :medium)
-    return nil unless avatar.attached?
-    variant = avatar_variant(size: size)
-    data = ActiveStorage::Blob.service.download(variant.key)
-    Base64.strict_encode64(data)
-  end
-
-  def avatar_variant(size: :medium)
-    dimensions = case size
-                 when :large  then [400, 400]
-                 when :medium then [256, 256]
-                 when :small  then [64, 64]
-                 else [256, 256]
-                 end
-    format = avatar.content_type == "image/png" ? :png : :jpeg
-    avatar.variant(resize_to_fill: dimensions, format: format)
-  end
+  # TODO Variant keys are currently broken for some reason
+  # (They use the same key as the main blob, when it should be
+  # "/variants/#{key)"
+  # def avatar_variant(size: :medium)
+  #   dimensions = case size
+  #                when :large  then [400, 400]
+  #                when :medium then [256, 256]
+  #                when :small  then [64, 64]
+  #                else [256, 256]
+  #                end
+  #   format = avatar.content_type == "image/png" ? :png : :jpeg
+  #   avatar.variant(resize_to_fill: dimensions, format: format)
+  # end
 
   def nostr_pubkey
     @nostr_pubkey ||= ldap_entry[:nostr_key]