[#923] Support for multiple (external) registrations per user via Registration.

priv/repo/migrations/20190315101315_add_auth_provider_and_auth_provider_uid_to_users.exs

@@ -1,12 +0,0 @@
-defmodule Pleroma.Repo.Migrations.AddAuthProviderAndAuthProviderUidToUsers do
-  use Ecto.Migration
-
-  def change do
-    alter table(:users) do
-      add :auth_provider, :string
-      add :auth_provider_uid, :string
-    end
-
-    create unique_index(:users, [:auth_provider, :auth_provider_uid])
-  end
-end

priv/repo/migrations/20190315101315_create_registrations.exs

@@ -0,0 +1,16 @@
+defmodule Pleroma.Repo.Migrations.CreateRegistrations do
+  use Ecto.Migration
+
+  def change do
+    create table(:registrations) do
+      add :user_id, references(:users, type: :uuid, on_delete: :delete_all)
+      add :provider, :string
+      add :uid, :string
+      add :info, :map, default: %{}
+
+      timestamps()
+    end
+
+    create unique_index(:registrations, [:provider, :uid])
+  end
+end