Federate metadata

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/federation/activity_pub/utils.ex

@@ -88,7 +88,10 @@ defmodule Mobilizon.Federation.ActivityPub.Utils do
           "participationMessage" => %{
             "@id" => "mz:participationMessage",
             "@type" => "sc:Text"
-          }
+          },
+          "PropertyValue" => "sc:PropertyValue",
+          "value" => "sc:value",
+          "propertyID" => "sc:propertyID"
         }
       ]
     }

lib/federation/activity_stream/converter/event.ex

@@ -10,9 +10,11 @@ defmodule Mobilizon.Federation.ActivityStream.Converter.Event do
   alias Mobilizon.Addresses
   alias Mobilizon.Addresses.Address
   alias Mobilizon.Events.Event, as: EventModel
+  alias Mobilizon.Medias.Media
 
   alias Mobilizon.Federation.ActivityStream.{Converter, Convertible}
   alias Mobilizon.Federation.ActivityStream.Converter.Address, as: AddressConverter
+  alias Mobilizon.Federation.ActivityStream.Converter.EventMetadata, as: EventMetadataConverter
   alias Mobilizon.Federation.ActivityStream.Converter.Media, as: MediaConverter
   alias Mobilizon.Web.Endpoint
 
@@ -53,6 +55,7 @@ defmodule Mobilizon.Federation.ActivityStream.Converter.Event do
          {:mentions, mentions} <- {:mentions, fetch_mentions(object["tag"])},
          {:visibility, visibility} <- {:visibility, get_visibility(object)},
          {:options, options} <- {:options, get_options(object)},
+         {:metadata, metadata} <- {:metadata, get_metdata(object)},
          [description: description, picture_id: picture_id, medias: medias] <-
            process_pictures(object, actor_id) do
       %{
@@ -69,6 +72,7 @@ defmodule Mobilizon.Federation.ActivityStream.Converter.Event do
         join_options: Map.get(object, "joinMode", "free"),
         local: is_local(object["id"]),
         options: options,
+        metadata: metadata,
         status: object |> Map.get("ical:status", "CONFIRMED") |> String.downcase(),
         online_address: object |> Map.get("attachment", []) |> get_online_address(),
         phone_address: object["phoneAddress"],
@@ -120,7 +124,7 @@ defmodule Mobilizon.Federation.ActivityStream.Converter.Event do
       "repliesModerationOption" => event.options.comment_moderation,
       "commentsEnabled" => event.options.comment_moderation == :allow_all,
       "anonymousParticipationEnabled" => event.options.anonymous_participation,
-      "attachment" => [],
+      "attachment" => Enum.map(event.metadata, &EventMetadataConverter.metadata_to_as/1),
       "draft" => event.draft,
       "ical:status" => event.status |> to_string |> String.upcase(),
       "id" => event.url,
@@ -132,8 +136,8 @@ defmodule Mobilizon.Federation.ActivityStream.Converter.Event do
     |> maybe_add_inline_media(event)
   end
 
-  @spec attributed_to_or_default(Event.t()) :: Actor.t()
-  defp attributed_to_or_default(event) do
+  @spec attributed_to_or_default(EventModel.t()) :: Actor.t()
+  defp attributed_to_or_default(%EventModel{} = event) do
     if(is_nil(event.attributed_to) or not Ecto.assoc_loaded?(event.attributed_to),
       do: nil,
       else: event.attributed_to
@@ -156,6 +160,14 @@ defmodule Mobilizon.Federation.ActivityStream.Converter.Event do
     }
   end
 
+  defp get_metdata(%{"attachment" => attachments}) do
+    attachments
+    |> Enum.filter(&(&1["type"] == "PropertyValue"))
+    |> Enum.map(&EventMetadataConverter.as_to_metadata/1)
+  end
+
+  defp get_metdata(_), do: []
+
   @spec get_address(map | binary | nil) :: integer | nil
   defp get_address(address_url) when is_binary(address_url) do
     get_address(%{"id" => address_url})
@@ -219,55 +231,56 @@ defmodule Mobilizon.Federation.ActivityStream.Converter.Event do
     end)
   end
 
-  @spec maybe_add_physical_address(map(), Event.t()) :: map()
-  defp maybe_add_physical_address(res, event) do
-    if is_nil(event.physical_address),
-      do: res,
-      else: Map.put(res, "location", AddressConverter.model_to_as(event.physical_address))
+  @spec maybe_add_physical_address(map(), EventModel.t()) :: map()
+  defp maybe_add_physical_address(res, %EventModel{
+         physical_address: %Address{} = physical_address
+       }) do
+    Map.put(res, "location", AddressConverter.model_to_as(physical_address))
   end
 
-  @spec maybe_add_event_picture(map(), Event.t()) :: map()
-  defp maybe_add_event_picture(res, event) do
-    if is_nil(event.picture),
-      do: res,
-      else:
-        Map.update(
-          res,
-          "attachment",
-          [],
-          &(&1 ++
-              [
-                event.picture
-                |> MediaConverter.model_to_as()
-                |> Map.put("name", @banner_picture_name)
-              ])
-        )
+  defp maybe_add_physical_address(res, %EventModel{physical_address: _}), do: res
+
+  @spec maybe_add_event_picture(map(), EventModel.t()) :: map()
+  defp maybe_add_event_picture(res, %EventModel{picture: %Media{} = picture}) do
+    Map.update(
+      res,
+      "attachment",
+      [],
+      &(&1 ++
+          [
+            picture
+            |> MediaConverter.model_to_as()
+            |> Map.put("name", @banner_picture_name)
+          ])
+    )
   end
 
-  @spec maybe_add_online_address(map(), Event.t()) :: map()
-  defp maybe_add_online_address(res, event) do
-    if is_nil(event.online_address),
-      do: res,
-      else:
-        Map.update(
-          res,
-          "attachment",
-          [],
-          &(&1 ++
-              [
-                %{
-                  "type" => "Link",
-                  "href" => event.online_address,
-                  "mediaType" => "text/html",
-                  "name" => @online_address_name
-                }
-              ])
-        )
+  defp maybe_add_event_picture(res, %EventModel{picture: _}), do: res
+
+  @spec maybe_add_online_address(map(), EventModel.t()) :: map()
+  defp maybe_add_online_address(res, %EventModel{online_address: online_address})
+       when is_binary(online_address) do
+    Map.update(
+      res,
+      "attachment",
+      [],
+      &(&1 ++
+          [
+            %{
+              "type" => "Link",
+              "href" => online_address,
+              "mediaType" => "text/html",
+              "name" => @online_address_name
+            }
+          ])
+    )
   end
 
-  @spec maybe_add_inline_media(map(), Event.t()) :: map()
-  defp maybe_add_inline_media(res, event) do
-    medias = Enum.map(event.media, &MediaConverter.model_to_as/1)
+  defp maybe_add_online_address(res, %EventModel{online_address: _}), do: res
+
+  @spec maybe_add_inline_media(map(), EventModel.t()) :: map()
+  defp maybe_add_inline_media(res, %EventModel{media: media}) do
+    medias = Enum.map(media, &MediaConverter.model_to_as/1)
 
     Map.update(
       res,

lib/federation/activity_stream/converter/event_metadata.ex

@@ -0,0 +1,70 @@
+defmodule Mobilizon.Federation.ActivityStream.Converter.EventMetadata do
+  @moduledoc """
+  Module to convert and validate event metadata
+  """
+
+  alias Mobilizon.Events.EventMetadata
+
+  @property_value "PropertyValue"
+
+  def metadata_to_as(%EventMetadata{type: :boolean, value: value, key: key})
+      when value in ["true", "false"] do
+    %{
+      "type" => @property_value,
+      "propertyID" => key,
+      "value" => String.to_existing_atom(value)
+    }
+  end
+
+  def metadata_to_as(%EventMetadata{type: :integer, value: value, key: key}) do
+    %{
+      "type" => @property_value,
+      "propertyID" => key,
+      "value" => String.to_integer(value)
+    }
+  end
+
+  def metadata_to_as(%EventMetadata{type: :float, value: value, key: key}) do
+    {value, _} = Float.parse(value)
+
+    %{
+      "type" => @property_value,
+      "propertyID" => key,
+      "value" => value
+    }
+  end
+
+  def metadata_to_as(%EventMetadata{type: :string, value: value, key: key} = metadata) do
+    additional = if is_nil(metadata.title), do: %{}, else: %{"name" => metadata.title}
+
+    Map.merge(
+      %{
+        "type" => @property_value,
+        "propertyID" => key,
+        "value" => value
+      },
+      additional
+    )
+  end
+
+  def as_to_metadata(%{"type" => @property_value, "propertyID" => key, "value" => value})
+      when is_boolean(value) do
+    %{type: :boolean, key: key, value: to_string(value)}
+  end
+
+  def as_to_metadata(%{"type" => @property_value, "propertyID" => key, "value" => value})
+      when is_float(value) do
+    %{type: :float, key: key, value: to_string(value)}
+  end
+
+  def as_to_metadata(%{"type" => @property_value, "propertyID" => key, "value" => value})
+      when is_integer(value) do
+    %{type: :integer, key: key, value: to_string(value)}
+  end
+
+  def as_to_metadata(%{"type" => @property_value, "propertyID" => key, "value" => value} = args)
+      when is_binary(value) do
+    additional = if Map.has_key?(args, "name"), do: %{title: Map.get(args, "name")}, else: %{}
+    Map.merge(%{type: :string, key: key, value: value}, additional)
+  end
+end

lib/mobilizon/events/event_metadata.ex

@@ -7,7 +7,7 @@ defmodule Mobilizon.Events.EventMetadata do
   import Ecto.Changeset
   import EctoEnum
 
-  defenum(EventMetadataTypeEnum, string: 0, integer: 1, boolean: 2)
+  defenum(EventMetadataTypeEnum, string: 0, integer: 1, boolean: 2, float: 3)
 
   @type t :: %__MODULE__{
           key: String.t(),

test/federation/activity_stream/converter/event_metadata_test.exs

@@ -0,0 +1,101 @@
+defmodule Mobilizon.Federation.ActivityStream.Converter.EventMetadataTest do
+  @moduledoc """
+  Module to test converting from EventMetadata to AS
+  """
+  use Mobilizon.DataCase
+  import Mobilizon.Factory
+  alias Mobilizon.Events.EventMetadata
+  alias Mobilizon.Federation.ActivityStream.Converter.EventMetadata, as: EventMetadataConverter
+
+  @property_value "PropertyValue"
+
+  describe "metadata_to_as/1" do
+    test "convert a simple metadata" do
+      %EventMetadata{} = metadata = build(:event_metadata)
+
+      assert %{"propertyID" => metadata.key, "value" => metadata.value, "type" => @property_value} ==
+               EventMetadataConverter.metadata_to_as(metadata)
+    end
+
+    test "convert a boolean" do
+      %EventMetadata{} = metadata = build(:event_metadata, type: :boolean, value: "false")
+
+      assert %{"propertyID" => metadata.key, "value" => false, "type" => @property_value} ==
+               EventMetadataConverter.metadata_to_as(metadata)
+    end
+
+    test "convert an integer" do
+      %EventMetadata{} = metadata = build(:event_metadata, type: :integer, value: "36")
+
+      assert %{"propertyID" => metadata.key, "value" => 36, "type" => @property_value} ==
+               EventMetadataConverter.metadata_to_as(metadata)
+    end
+
+    test "convert a float" do
+      %EventMetadata{} = metadata = build(:event_metadata, type: :float, value: "36.53")
+
+      assert %{"propertyID" => metadata.key, "value" => 36.53, "type" => @property_value} ==
+               EventMetadataConverter.metadata_to_as(metadata)
+    end
+
+    test "convert custom metadata with title" do
+      %EventMetadata{} = metadata = build(:event_metadata, title: "hello")
+
+      assert %{
+               "propertyID" => metadata.key,
+               "value" => metadata.value,
+               "name" => "hello",
+               "type" => @property_value
+             } ==
+               EventMetadataConverter.metadata_to_as(metadata)
+    end
+  end
+
+  describe "as_to_metadata/1" do
+    test "parse a simple metadata" do
+      assert %{key: "somekey", value: "somevalue", type: :string} ==
+               EventMetadataConverter.as_to_metadata(%{
+                 "propertyID" => "somekey",
+                 "value" => "somevalue",
+                 "type" => @property_value
+               })
+    end
+
+    test "parse a boolean metadata" do
+      assert %{key: "somekey", value: "false", type: :boolean} ==
+               EventMetadataConverter.as_to_metadata(%{
+                 "propertyID" => "somekey",
+                 "value" => false,
+                 "type" => @property_value
+               })
+    end
+
+    test "parse an integer metadata" do
+      assert %{key: "somekey", value: "4", type: :integer} ==
+               EventMetadataConverter.as_to_metadata(%{
+                 "propertyID" => "somekey",
+                 "value" => 4,
+                 "type" => @property_value
+               })
+    end
+
+    test "parse a float metadata" do
+      assert %{key: "somekey", value: "4.36", type: :float} ==
+               EventMetadataConverter.as_to_metadata(%{
+                 "propertyID" => "somekey",
+                 "value" => 4.36,
+                 "type" => @property_value
+               })
+    end
+
+    test "parse a custom metadata with title" do
+      assert %{key: "somekey", value: "somevalue", type: :string, title: "title"} ==
+               EventMetadataConverter.as_to_metadata(%{
+                 "propertyID" => "somekey",
+                 "value" => "somevalue",
+                 "name" => "title",
+                 "type" => @property_value
+               })
+    end
+  end
+end

test/support/factory.ex

@@ -183,6 +183,7 @@ defmodule Mobilizon.Factory do
       visibility: :public,
       tags: build_list(3, :tag),
       mentions: [],
+      metadata: build_list(2, :event_metadata),
       local: true,
       publish_at: DateTime.utc_now(),
       url: Routes.page_url(Endpoint, :event, uuid),
@@ -458,4 +459,12 @@ defmodule Mobilizon.Factory do
       uri: sequence("https://someshare.uri/p/12")
     }
   end
+
+  def event_metadata_factory do
+    %Mobilizon.Events.EventMetadata{
+      key: sequence("mz:custom:something"),
+      value: sequence("a value"),
+      type: :string
+    }
+  end
 end