Include image description in status media cards

Signed-off-by: marcin mikołajczak <git@mkljczk.pl>

changelog.d/card-image-description.add

@@ -0,0 +1 @@
+Include image description in status media cards

lib/pleroma/web/api_spec/schemas/status.ex

@@ -58,6 +58,10 @@ defmodule Pleroma.Web.ApiSpec.Schemas.Status do
             format: :uri,
             description: "Preview thumbnail"
           },
+          image_description: %Schema{
+            type: :string,
+            description: "Alternate text that describes what is in the thumbnail"
+          },
           title: %Schema{type: :string, description: "Title of linked resource"},
           description: %Schema{type: :string, description: "Description of preview"}
         }

lib/pleroma/web/mastodon_api/views/status_view.ex

@@ -589,6 +589,7 @@ def render("card.json", %{rich_media: rich_media, page_url: page_url}) do
       provider_url: page_url_data.scheme <> "://" <> page_url_data.host,
       url: page_url,
       image: image_url,
+      image_description: rich_media["image:alt"] || "",
       title: rich_media["title"] || "",
       description: rich_media["description"] || "",
       pleroma: %{

test/pleroma/web/mastodon_api/controllers/status_controller_test.exs

@@ -1717,6 +1717,7 @@ test "returns rich-media card", %{conn: conn, user: user} do
 
       card_data = %{
         "image" => "http://ia.media-imdb.com/images/rock.jpg",
+        "image_description" => "",
         "provider_name" => "example.com",
         "provider_url" => "https://example.com",
         "title" => "The Rock",
@@ -1770,6 +1771,7 @@ test "replaces missing description with an empty string", %{conn: conn, user: us
                "title" => "Pleroma",
                "description" => "",
                "image" => nil,
+               "image_description" => "",
                "provider_name" => "example.com",
                "provider_url" => "https://example.com",
                "url" => "https://example.com/ogp-missing-data",

test/pleroma/web/mastodon_api/views/status_view_test.exs

@@ -773,6 +773,7 @@ test "a rich media card with all relevant data renders correctly" do
       page_url = "http://example.com"
 
       card = %{
+        "image:alt" => "Example image description",
         url: page_url,
         site_name: "Example site name",
         title: "Example website",
@@ -780,7 +781,7 @@ test "a rich media card with all relevant data renders correctly" do
         description: "Example description"
       }
 
-      %{provider_name: "example.com"} =
+      %{provider_name: "example.com", image_description: "Example image description"} =
         StatusView.render("card.json", %{page_url: page_url, rich_media: card})
     end