Add configuration/settings endpoints (#515)

* Create Setting table/Schema

* Add Setting overlay module

* Add Setting.all()

* Add initial seeder for settings

* Add position

* Finalize setting seeds

* Skip input requirements when assume_yes is true

* Add descriptions

* Refactor Standalone and max_per_page settings

* Refactor code to handle base_url and standalone settings properly

* Create EWalletConfig sub app

* Reorganize EWalletConfig and EWalletDB

* Use EWalletConfig in all other sub apps

* Refactor EWalletConfig to use a GenServer for setting registration

* Update EWalletDB to use EWalletConfig GenServer

* Fix most of the tests in wallet

* Extract Settings loading out of Config

* Update EWalletAPI To use EWalletConfig

* Fix failing eWallet tests

* Finally figured out how to fix all the tests with the Config GenServer…

* Reorganize utils tests

* Add tests for Setting module

* Add config_test

* Add type specs in Config

* Add multi node test

* Add SettingLoader tests

* Remove unused alias

* Cleanup

* Remove multi node test for now

* Fix seeds

* Add setting validation and remove select type

* Fix setting ordering

* Fix minor issues

* Fix Credo issue in insert_all_defaults

* Fix dependencies out of place for emails

* Move back validator functions not needed in EWalletConfig

* Remove unique index on positions

* Update LocalLedger to use EWalletConfig

* Fix race condition

* Move back Validator in ewallet_db

* Update components.md

* Add ConfigurationController

* Add /configuration.update endpoint

* Add result count in responses

* Fix Credo offenses

* Remove custom error

* Handle keyword list properly for config_pid param

* Update Swagger with Configuration endpoints

* Fix and update open api spec (also convert to json)

apps/admin_api/lib/admin_api/v1/controllers/configuration_controller.ex

@@ -0,0 +1,24 @@
+defmodule AdminAPI.V1.ConfigurationController do
+  use AdminAPI, :controller
+  import AdminAPI.V1.ErrorHandler
+
+  alias EWallet.Web.{Orchestrator, V1.SettingOverlay}
+  alias EWalletConfig.{Config, Repo}
+
+  def get(conn, attrs) do
+    settings =
+      Config.query_settings()
+      |> Orchestrator.query(SettingOverlay, attrs, Repo)
+
+    render(conn, :settings, %{settings: settings})
+  end
+
+  def update(conn, attrs) do
+    with {:ok, settings} <- Config.update(attrs) do
+      render(conn, :settings_with_errors, %{settings: settings})
+    else
+      {:error, code} ->
+        handle_error(conn, code)
+    end
+  end
+end

apps/admin_api/lib/admin_api/v1/router.ex

@@ -139,6 +139,9 @@ defmodule AdminAPI.V1.Router do
 
     post("/settings.all", SettingsController, :get_settings)
 
+    post("/configuration.get", ConfigurationController, :get)
+    post("/configuration.update", ConfigurationController, :update)
+
     # Self endpoints (operations on the currently authenticated user)
     post("/me.get", SelfController, :get)
     post("/me.get_accounts", SelfController, :get_accounts)

apps/admin_api/lib/admin_api/v1/views/configuration_view.ex

@@ -0,0 +1,16 @@
+defmodule AdminAPI.V1.ConfigurationView do
+  use AdminAPI, :view
+  alias EWallet.Web.V1.{ConfigSettingSerializer, ResponseSerializer}
+
+  def render("settings.json", %{settings: settings}) do
+    settings
+    |> ConfigSettingSerializer.serialize()
+    |> ResponseSerializer.serialize(success: true)
+  end
+
+  def render("settings_with_errors.json", %{settings: settings}) do
+    settings
+    |> ConfigSettingSerializer.serialize_with_errors()
+    |> ResponseSerializer.serialize(success: true)
+  end
+end