Extract timeline actions from `MastodonAPIController` into `TimelineController`

[akkoma] / lib / pleroma / web / controller_helper.ex

diff --git a/lib/pleroma/web/controller_helper.ex b/lib/pleroma/web/controller_helper.ex
index 4d6192db03edb5f63eb8bbbc66078c0cb20d5792..e90bf842ee37bf625dea3da85accc85f4a227865 100644 (file)
--- a/lib/pleroma/web/controller_helper.ex
+++ b/lib/pleroma/web/controller_helper.ex
@@ -5,15 +5,67 @@
 defmodule Pleroma.Web.ControllerHelper do
   use Pleroma.Web, :controller
 
-  def oauth_scopes(params, default) do
-    # Note: `scopes` is used by Mastodon — supporting it but sticking to
-    # OAuth's standard `scope` wherever we control it
-    Pleroma.Web.OAuth.parse_scopes(params["scope"] || params["scopes"], default)
-  end
+  # As in MastoAPI, per https://api.rubyonrails.org/classes/ActiveModel/Type/Boolean.html
+  @falsy_param_values [false, 0, "0", "f", "F", "false", "False", "FALSE", "off", "OFF"]
+  def truthy_param?(blank_value) when blank_value in [nil, ""], do: nil
+  def truthy_param?(value), do: value not in @falsy_param_values
 
   def json_response(conn, status, json) do
     conn
     |> put_status(status)
     |> json(json)
   end
+
+  @spec fetch_integer_param(map(), String.t(), integer() | nil) :: integer() | nil
+  def fetch_integer_param(params, name, default \\ nil) do
+    params
+    |> Map.get(name, default)
+    |> param_to_integer(default)
+  end
+
+  defp param_to_integer(val, _) when is_integer(val), do: val
+
+  defp param_to_integer(val, default) when is_binary(val) do
+    case Integer.parse(val) do
+      {res, _} -> res
+      _ -> default
+    end
+  end
+
+  defp param_to_integer(_, default), do: default
+
+  def add_link_headers(conn, activities, extra_params \\ %{}) do
+    case List.last(activities) do
+      %{id: max_id} ->
+        params =
+          conn.params
+          |> Map.drop(Map.keys(conn.path_params))
+          |> Map.drop(["since_id", "max_id", "min_id"])
+          |> Map.merge(extra_params)
+
+        limit =
+          params
+          |> Map.get("limit", "20")
+          |> String.to_integer()
+
+        min_id =
+          if length(activities) <= limit do
+            activities
+            |> List.first()
+            |> Map.get(:id)
+          else
+            activities
+            |> Enum.at(limit * -1)
+            |> Map.get(:id)
+          end
+
+        next_url = current_url(conn, Map.merge(params, %{max_id: max_id}))
+        prev_url = current_url(conn, Map.merge(params, %{min_id: min_id}))
+
+        put_resp_header(conn, "link", "<#{next_url}>; rel=\"next\", <#{prev_url}>; rel=\"prev\"")
+
+      _ ->
+        conn
+    end
+  end
 end