Merge pull request 'metrics' (#375) from stats into develop

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

diff --git a/lib/pleroma/web/controller_helper.ex b/lib/pleroma/web/controller_helper.ex
index 5d67d75b5fd09bdb5d0cf793e9be5c3abfeccc3d..6acc8f07877a08e40519fc36c49e18a0caa56523 100644 (file)
--- a/lib/pleroma/web/controller_helper.ex
+++ b/lib/pleroma/web/controller_helper.ex
@@ -1,22 +1,18 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2020 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
 
   alias Pleroma.Pagination
+  alias Pleroma.Web.Utils.Params
 
-  # As in Mastodon API, per https://api.rubyonrails.org/classes/ActiveModel/Type/Boolean.html
-  @falsy_param_values [false, 0, "0", "f", "F", "false", "False", "FALSE", "off", "OFF"]
-
-  def explicitly_falsy_param?(value), do: value in @falsy_param_values
-
-  # Note: `nil` and `""` are considered falsy values in Pleroma
-  def falsy_param?(value),
-    do: explicitly_falsy_param?(value) or value in [nil, ""]
-
-  def truthy_param?(value), do: not falsy_param?(value)
+  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
@@ -42,13 +38,13 @@ defmodule Pleroma.Web.ControllerHelper do
 
   defp param_to_integer(_, default), do: default
 
-  def add_link_headers(conn, activities, extra_params \\ %{})
+  def add_link_headers(conn, entries, extra_params \\ %{})
 
-  def add_link_headers(%{assigns: %{skip_link_headers: true}} = conn, _activities, _extra_params),
+  def add_link_headers(%{assigns: %{skip_link_headers: true}} = conn, _entries, _extra_params),
     do: conn
 
-  def add_link_headers(conn, activities, extra_params) do
-    case get_pagination_fields(conn, activities, extra_params) do
+  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\"")
 
@@ -57,35 +53,32 @@ defmodule Pleroma.Web.ControllerHelper do
     end
   end
 
-  def get_pagination_fields(conn, activities, extra_params \\ %{}) do
-    case List.last(activities) 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} ->
-        params =
-          conn.params
-          |> Map.drop(Map.keys(conn.path_params))
-          |> Map.merge(extra_params)
-          |> Map.drop(Pagination.page_keys() -- ["limit", "order"])
-
-        min_id =
-          activities
-          |> List.first()
-          |> Map.get(:id)
-
-        fields = %{
-          "next" => current_url(conn, Map.put(params, :max_id, max_id)),
-          "prev" => current_url(conn, Map.put(params, :min_id, min_id))
-        }
-
-        #  Generating an `id` without already present pagination keys would
-        # need a query-restriction with an `q.id >= ^id` or `q.id <= ^id`
-        # instead of the `q.id > ^min_id` and `q.id < ^max_id`.
-        #  This is because we only have ids present inside of the page, while
-        # `min_id`, `since_id` and `max_id` requires to know one outside of it.
-        if Map.take(conn.params, Pagination.page_keys() -- ["limit", "order"]) != [] do
-          Map.put(fields, "id", current_url(conn, conn.params))
-        else
-          fields
-        end
+        %{id: min_id} = List.first(entries)
+
+        build_pagination_fields(conn, min_id, max_id, extra_params)
 
       _ ->
         %{}
@@ -94,16 +87,18 @@ defmodule Pleroma.Web.ControllerHelper do
 
   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()
+      %Pleroma.User{} = account ->
+        assign(conn, :account, account)
+
+      nil ->
+        Pleroma.Web.MastodonAPI.FallbackController.call(conn, {:error, :not_found})
+        |> halt()
     end
   end
 
+  @spec try_render(Plug.Conn.t(), any, any) :: Plug.Conn.t()
   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
-    end
+    render(conn, target, params)
   end
 
   def try_render(conn, _, _) do
@@ -120,6 +115,6 @@ defmodule Pleroma.Web.ControllerHelper do
     # To do once OpenAPI transition mess is over: just `truthy_param?(params[:with_relationships])`
     params
     |> Map.get(:with_relationships, params["with_relationships"])
-    |> truthy_param?()
+    |> Params.truthy_param?()
   end
 end