Add fixes for SPC users.

lib/pleroma/spc_fixes/spc_fixes.ex

@@ -0,0 +1,64 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+alias Pleroma.Repo
+alias Pleroma.User
+# alias Pleroma.Web.ActivityPub.Transmogrifier
+import Ecto.Query
+
+defmodule Pleroma.SpcFixes do
+  def upgrade_users do
+    query =
+      from(u in User,
+        where: fragment("? like ?", u.ap_id, "https://shitposter.club/user/%")
+      )
+
+    {:ok, file} = File.read("lib/pleroma/spc_fixes/users_conversion.txt")
+
+    mapping =
+      file
+      |> String.trim()
+      |> String.split("\n")
+      |> Enum.map(fn line ->
+        line
+        |> String.split("\t")
+      end)
+      |> Enum.reduce(%{}, fn [_id, old_ap_id, new_ap_id], acc ->
+        Map.put(acc, old_ap_id, String.trim(new_ap_id))
+      end)
+
+    # First, refetch all the old users.
+    _old_users =
+      query
+      |> Repo.all()
+      |> Enum.each(fn user ->
+        with ap_id when is_binary(ap_id) <- mapping[user.ap_id] do
+          # This fetches and updates the user.
+          User.get_or_fetch_by_ap_id(ap_id)
+        end
+      end)
+
+    # Now, fix follow relationships.
+    query =
+      from(u in User,
+        where: fragment("? like ?", u.ap_id, "https://shitposter.club/users/%")
+      )
+
+    query
+    |> Repo.all()
+    |> Enum.each(fn user ->
+      old_follower_address = User.ap_followers(user)
+
+      query =
+        from(u in User,
+          where: ^old_follower_address in u.following,
+          update: [
+            push: [following: ^user.follower_address]
+          ]
+        )
+
+      Repo.update_all(query, [])
+    end)
+  end
+end