Add fixes for SPC users.

lib/pleroma/spc_fixes/spc_fixes.ex

+# 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

test/fixtures/zep.json

+{"url":"https://shitposter.club/users/zep","type":"Person","tag":[],"summary":"The Zeptar Show on anonradio.net","publicKey":{"publicKeyPem":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsdkm3pQxYTW7rVVUQBJ0\nc+J7pUI623gohi2fwM05ZenYVysRIw0Mm6GYvDsCO6DHywi97pG4EBABEQNyagLS\njIDTrLR1GU0K4dnPgaZ7fIkXvMN+d2NNe0LoIw0wX23sw+L+D+U5l0AJ+3LqDC9s\nwucLz4uYokcrl8yxGFYHWjpRYqy/WVuk8986Hm1Mov4j8AWWV5VLl1yYcbQthSuw\nDXL5yMqwiLPn+Vhc4Pb216IhwIl+k9/tfdsnyAlCiasvUQ8Cigde0AJC0sqnUQhy\nJ4gSftvyW5ejYYebNWg09Afjq3I8k0gj1fGks0pY9IJr2a2H+eqCA//YI8z1XHvE\nlwIDAQAB\n-----END PUBLIC KEY-----\n\n","owner":"https://shitposter.club/users/zep","id":"https://shitposter.club/users/zep#main-key"},"preferredUsername":"zep","outbox":"https://shitposter.club/users/zep/outbox","name":"DJ Zep","manuallyApprovesFollowers":false,"inbox":"https://shitposter.club/users/zep/inbox","image":{"url":"https://shitposter.club/media/13946026-15ba-40e1-9cad-ba3a7aeb47e1/13946026-15ba-40e1-9cad-ba3a7aeb47e1.jpeg","type":"Image"},"id":"https://shitposter.club/users/zep","icon":{"url":"https://shitposter.club/media/83650c2f-7f31-98f5-acee-69a486c94173/83650c2f-7f31-98f5-acee-69a486c94173.jpeg","type":"Image"},"following":"https://shitposter.club/users/zep/following","followers":"https://shitposter.club/users/zep/followers","endpoints":{"sharedInbox":"https://shitposter.club/inbox"},"@context":["https://www.w3.org/ns/activitystreams","https://shitposter.club/schemas/litepub-0.1.jsonld"]}
\ No newline at end of file

test/spc_fixes_test.exs

+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.SpcFixesTest do
+  use Pleroma.Web.ConnCase
+
+  alias Pleroma.SpcFixes
+  alias Pleroma.Web.CommonAPI
+  alias Pleroma.Web.ActivityPub.ActivityPub
+  alias Pleroma.User
+
+  import Pleroma.Factory
+
+  test "resets the ap_id and follower_address of old spc users" do
+    Tesla.Mock.mock(fn
+      %{url: "https://shitposter.club/users/zep"} ->
+        %Tesla.Env{status: 200, body: File.read!("test/fixtures/zep.json")}
+
+      %{url: nil} ->
+        nil
+    end)
+
+    user =
+      insert(:user, %{
+        local: false,
+        ap_id: "https://shitposter.club/user/4962",
+        follower_address: User.ap_followers(%User{nickname: "zep@shitposter.club"}),
+        info: %{topic: "ignore"},
+        nickname: "zep@shitposter.club"
+      })
+
+    other_user = insert(:user)
+    {:ok, other_user} = User.follow(other_user, user)
+    {:ok, activity} = CommonAPI.post(user, %{"status" => "blabla"})
+
+    assert User.following?(other_user, user)
+    assert [activity] == ActivityPub.fetch_activities(other_user.following)
+
+    SpcFixes.upgrade_users()
+
+    user = Pleroma.Repo.get(User, user.id)
+    other_user = Pleroma.Repo.get(User, other_user.id)
+
+    assert user.ap_id == "https://shitposter.club/users/zep"
+    assert user.follower_address == "https://shitposter.club/users/zep/followers"
+
+    # Activites and following are correctly stitched.
+    assert User.following?(other_user, user)
+    assert [activity] == ActivityPub.fetch_activities(other_user.following) |> IO.inspect()
+  end
+end