Expose backup status via Pleroma API

lib/pleroma/web/api_spec/operations/pleroma_backup_operation.ex

@@ -64,7 +64,9 @@ defmodule Pleroma.Web.ApiSpec.PleromaBackupOperation do
         content_type: %Schema{type: :string},
         file_name: %Schema{type: :string},
         file_size: %Schema{type: :integer},
-        processed: %Schema{type: :boolean}
+        processed: %Schema{type: :boolean, description: "whether this backup has succeeded"},
+        state: %Schema{type: :string, description: "the state of the backup", enum: ["pending", "running", "complete", "failed"]},
+        processed_number: %Schema{type: :integer, description: "the number of records processed"}
       },
       example: %{
         "content_type" => "application/zip",
@@ -72,7 +74,9 @@ defmodule Pleroma.Web.ApiSpec.PleromaBackupOperation do
           "https://cofe.fe:4000/media/backups/archive-foobar-20200908T164207-Yr7vuT5Wycv-sN3kSN2iJ0k-9pMo60j9qmvRCdDqIew.zip",
         "file_size" => 4105,
         "inserted_at" => "2020-09-08T16:42:07.000Z",
-        "processed" => true
+        "processed" => true,
+        "state" => "complete",
+        "processed_number": 20
       }
     }
   end

lib/pleroma/web/pleroma_api/views/backup_view.ex

@@ -9,12 +9,22 @@ defmodule Pleroma.Web.PleromaAPI.BackupView do
   alias Pleroma.Web.CommonAPI.Utils
 
   def render("show.json", %{backup: %Backup{} = backup}) do
+    # To deal with records before the migration
+    state =
+    if backup.state == :invalid do
+      if backup.processed, do: :complete, else: :failed
+    else
+      backup.state
+    end
+
     %{
       id: backup.id,
       content_type: backup.content_type,
       url: download_url(backup),
       file_size: backup.file_size,
       processed: backup.processed,
+      state: to_string(state),
+      processed_number: backup.processed_number,
       inserted_at: Utils.to_masto_date(backup.inserted_at)
     }
   end

test/pleroma/web/pleroma_api/views/backup_view_test.exs

@@ -15,4 +15,43 @@ defmodule Pleroma.Web.PleromaAPI.BackupViewTest do
     result = BackupView.render("show.json", backup: backup)
     assert result.id == backup.id
   end
+
+  test "it renders the state and processed_number" do
+    user = insert(:user)
+    backup = Backup.new(user)
+
+    result = BackupView.render("show.json", backup: backup)
+    assert result.state == to_string(backup.state)
+    assert result.processed_number == backup.processed_number
+  end
+
+  test "it renders failed state with legacy records" do
+    backup = %Backup{
+      id: 0,
+      content_type: "application/zip",
+      file_name: "dummy",
+      file_size: 1,
+      state: :invalid,
+      processed: true,
+      processed_number: 1,
+      inserted_at: NaiveDateTime.utc_now()
+    }
+
+    result = BackupView.render("show.json", backup: backup)
+    assert result.state == "complete"
+
+    backup = %Backup{
+      id: 0,
+      content_type: "application/zip",
+      file_name: "dummy",
+      file_size: 1,
+      state: :invalid,
+      processed: false,
+      processed_number: 1,
+      inserted_at: NaiveDateTime.utc_now()
+    }
+
+    result = BackupView.render("show.json", backup: backup)
+    assert result.state == "failed"
+  end
 end