introduce User.maybe_direct_follow() and use it where we used to call User.follow()

lib/pleroma/user.ex

@@ -168,6 +168,35 @@ defmodule Pleroma.User do
     end
   end
 
+  def maybe_direct_follow(%User{} = follower, %User{info: info} = followed) do
+    user_info = user_info(followed)
+
+    should_direct_follow =
+      cond do
+        # if the account is locked, don't pre-create the relationship
+        user_info.locked == true ->
+          false
+
+        # if the users are blocking each other, we shouldn't even be here, but check for it anyway
+        User.blocks?(follower, followed) == true or User.blocks?(followed, follower) == true ->
+          false
+
+        # if OStatus, then there is no three-way handshake to follow
+        User.ap_enabled?(followed) != true ->
+          true
+
+        # if there are no other reasons not to, just pre-create the relationship
+        true ->
+          true
+      end
+
+    if should_direct_follow do
+      follow(follower, followed)
+    else
+      follower
+    end
+  end
+
   def follow(%User{} = follower, %User{info: info} = followed) do
     ap_followers = followed.follower_address