X-Git-Url: https://git.squeep.com/?a=blobdiff_plain;f=lib%2Fpleroma%2Fweb%2Fcontroller_helper.ex;h=7b84b43e43e4e1dc4afffc26ee75f6c0a8e536d3;hb=5d279a22b162e7d8a871db1b9368a888e92ea167;hp=9a4e322c920e24b7a7e655c45177fac53cb5cbc8;hpb=6fab5fe7f892b5a9cf4d605b079e544583f0ce73;p=akkoma

diff --git a/lib/pleroma/web/controller_helper.ex b/lib/pleroma/web/controller_helper.ex
index 9a4e322c9..7b84b43e4 100644
--- a/lib/pleroma/web/controller_helper.ex
+++ b/lib/pleroma/web/controller_helper.ex
@@ -1,14 +1,18 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ControllerHelper do
   use Pleroma.Web, :controller
 
-  # 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
+  alias Pleroma.Pagination
+  alias Pleroma.Web.Utils.Params
+
+  def json_response(conn, status, _) when status in [204, :no_content] do
+    conn
+    |> put_resp_header("content-type", "application/json")
+    |> send_resp(status, "")
+  end
 
   def json_response(conn, status, json) do
     conn
@@ -34,34 +38,14 @@ defmodule Pleroma.Web.ControllerHelper do
 
   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}))
+  def add_link_headers(conn, entries, extra_params \\ %{})
+
+  def add_link_headers(%{assigns: %{skip_link_headers: true}} = conn, _entries, _extra_params),
+    do: conn
 
+  def add_link_headers(conn, entries, extra_params) do
+    case get_pagination_fields(conn, entries, extra_params) do
+      %{"next" => next_url, "prev" => prev_url} ->
         put_resp_header(conn, "link", "<#{next_url}>; rel=\"next\", <#{prev_url}>; rel=\"prev\"")
 
       _ ->
@@ -69,15 +53,46 @@ defmodule Pleroma.Web.ControllerHelper do
     end
   end
 
-  def assign_account_by_id(%{params: %{"id" => id}} = conn, _) do
-    case Pleroma.User.get_cached_by_id(id) do
+  @id_keys Pagination.page_keys() -- ["limit", "order"]
+  defp build_pagination_fields(conn, min_id, max_id, extra_params) do
+    params =
+      conn.params
+      |> Map.drop(Map.keys(conn.path_params) |> Enum.map(&String.to_existing_atom/1))
+      |> Map.merge(extra_params)
+      |> Map.drop(@id_keys)
+
+    %{
+      "next" => current_url(conn, Map.put(params, :max_id, max_id)),
+      "prev" => current_url(conn, Map.put(params, :min_id, min_id)),
+      "id" => current_url(conn)
+    }
+  end
+
+  def get_pagination_fields(conn, entries, extra_params \\ %{}) do
+    case List.last(entries) do
+      %{pagination_id: max_id} when not is_nil(max_id) ->
+        %{pagination_id: min_id} = List.first(entries)
+
+        build_pagination_fields(conn, min_id, max_id, extra_params)
+
+      %{id: max_id} ->
+        %{id: min_id} = List.first(entries)
+
+        build_pagination_fields(conn, min_id, max_id, extra_params)
+
+      _ ->
+        %{}
+    end
+  end
+
+  def assign_account_by_id(conn, _) do
+    case Pleroma.User.get_cached_by_id(conn.params.id) do
       %Pleroma.User{} = account -> assign(conn, :account, account)
       nil -> Pleroma.Web.MastodonAPI.FallbackController.call(conn, {:error, :not_found}) |> halt()
     end
   end
 
-  def try_render(conn, target, params)
-      when is_binary(target) do
+  def try_render(conn, target, params) when is_binary(target) do
     case render(conn, target, params) do
       nil -> render_error(conn, :not_implemented, "Can't display this activity")
       res -> res
@@ -87,4 +102,17 @@ defmodule Pleroma.Web.ControllerHelper do
   def try_render(conn, _, _) do
     render_error(conn, :not_implemented, "Can't display this activity")
   end
+
+  @doc """
+  Returns true if request specifies to include embedded relationships in account objects.
+  May only be used in selected account-related endpoints; has no effect for status- or
+    notification-related endpoints.
+  """
+  # Intended for PleromaFE: https://git.pleroma.social/pleroma/pleroma-fe/-/issues/838
+  def embed_relationships?(params) do
+    # To do once OpenAPI transition mess is over: just `truthy_param?(params[:with_relationships])`
+    params
+    |> Map.get(:with_relationships, params["with_relationships"])
+    |> Params.truthy_param?()
+  end
 end