X-Git-Url: http://git.squeep.com/?a=blobdiff_plain;f=lib%2Fpleroma%2Fweb%2Fcontroller_helper.ex;h=69946fb81ee6a5571728586e8c8fbde681ccb351;hb=0883a706dc376fdfb7de9df1366803e87c8e7c98;hp=eeac9f503ccf09d75fc216b9ee2c9beab7622b15;hpb=74f7f308f879b26a261db3b5c1d389cea898541c;p=akkoma

diff --git a/lib/pleroma/web/controller_helper.ex b/lib/pleroma/web/controller_helper.ex
index eeac9f503..69946fb81 100644
--- a/lib/pleroma/web/controller_helper.ex
+++ b/lib/pleroma/web/controller_helper.ex
@@ -1,14 +1,22 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 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", "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
+
+  # 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, json) do
     conn
@@ -34,79 +42,85 @@ defmodule Pleroma.Web.ControllerHelper do
 
   defp param_to_integer(_, default), do: default
 
-  def add_link_headers(
-        conn,
-        method,
-        activities,
-        param \\ nil,
-        params \\ %{},
-        func3 \\ nil,
-        func4 \\ nil
-      ) do
-    params =
-      conn.params
-      |> Map.drop(["since_id", "max_id", "min_id"])
-      |> Map.merge(params)
+  def add_link_headers(conn, activities, extra_params \\ %{})
+
+  def add_link_headers(%{assigns: %{skip_link_headers: true}} = conn, _activities, _extra_params),
+    do: conn
 
-    last = List.last(activities)
+  def add_link_headers(conn, activities, extra_params) do
+    case get_pagination_fields(conn, activities, extra_params) do
+      %{"next" => next_url, "prev" => prev_url} ->
+        put_resp_header(conn, "link", "<#{next_url}>; rel=\"next\", <#{prev_url}>; rel=\"prev\"")
 
-    func3 = func3 || (&mastodon_api_url/3)
-    func4 = func4 || (&mastodon_api_url/4)
+      _ ->
+        conn
+    end
+  end
 
-    if last do
-      max_id = last.id
+  @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))
+      |> Map.merge(extra_params)
+      |> Map.drop(@id_keys)
 
-      limit =
-        params
-        |> Map.get("limit", "20")
-        |> String.to_integer()
+    %{
+      "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
 
-      min_id =
-        if length(activities) <= limit do
+  def get_pagination_fields(conn, activities, extra_params \\ %{}) do
+    case List.last(activities) do
+      %{pagination_id: max_id} when not is_nil(max_id) ->
+        %{pagination_id: min_id} =
           activities
           |> List.first()
-          |> Map.get(:id)
-        else
+
+        build_pagination_fields(conn, min_id, max_id, extra_params)
+
+      %{id: max_id} ->
+        %{id: min_id} =
           activities
-          |> Enum.at(limit * -1)
-          |> Map.get(:id)
-        end
-
-      {next_url, prev_url} =
-        if param do
-          {
-            func4.(
-              Pleroma.Web.Endpoint,
-              method,
-              param,
-              Map.merge(params, %{max_id: max_id})
-            ),
-            func4.(
-              Pleroma.Web.Endpoint,
-              method,
-              param,
-              Map.merge(params, %{min_id: min_id})
-            )
-          }
-        else
-          {
-            func3.(
-              Pleroma.Web.Endpoint,
-              method,
-              Map.merge(params, %{max_id: max_id})
-            ),
-            func3.(
-              Pleroma.Web.Endpoint,
-              method,
-              Map.merge(params, %{min_id: min_id})
-            )
-          }
-        end
-
-      conn
-      |> put_resp_header("link", "<#{next_url}>; rel=\"next\", <#{prev_url}>; rel=\"prev\"")
-    else
-      conn
+          |> List.first()
+
+        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
+    case render(conn, target, params) do
+      nil -> render_error(conn, :not_implemented, "Can't display this activity")
+      res -> res
     end
   end
+
+  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"])
+    |> truthy_param?()
+  end
 end