Refactor media upload

Use Upload Media logic from Pleroma

Backend changes for picture upload

Move AS <-> Model conversion to separate module

Front changes

Downgrade apollo-client: https://github.com/Akryum/vue-apollo/issues/577

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

lib/service/activity_pub/converters/event.ex

@@ -0,0 +1,70 @@
+defmodule Mobilizon.Service.ActivityPub.Converters.Event do
+  @moduledoc """
+  Event converter
+
+  This module allows to convert events from ActivityStream format to our own internal one, and back
+  """
+  alias Mobilizon.Actors
+  alias Mobilizon.Media
+  alias Mobilizon.Media.Picture
+  alias Mobilizon.Actors.Actor
+  alias Mobilizon.Events.Event, as: EventModel
+  alias Mobilizon.Service.ActivityPub.Converter
+
+  @behaviour Converter
+
+  @doc """
+  Converts an AP object data to our internal data structure
+  """
+  @impl Converter
+  @spec as_to_model_data(map()) :: map()
+  def as_to_model_data(object) do
+    with {:ok, %Actor{id: actor_id}} <- Actors.get_actor_by_url(object["actor"]) do
+      picture_id =
+        with true <- Map.has_key?(object, "attachment"),
+             %Picture{id: picture_id} <-
+               Media.get_picture_by_url(
+                 object["attachment"]
+                 |> hd
+                 |> Map.get("url")
+                 |> hd
+                 |> Map.get("href")
+               ) do
+          picture_id
+        else
+          _ -> nil
+        end
+
+      %{
+        "title" => object["name"],
+        "description" => object["content"],
+        "organizer_actor_id" => actor_id,
+        "picture_id" => picture_id,
+        "begins_on" => object["begins_on"],
+        "category" => object["category"],
+        "url" => object["id"],
+        "uuid" => object["uuid"]
+      }
+    end
+  end
+
+  @doc """
+  Convert an event struct to an ActivityStream representation
+  """
+  @impl Converter
+  @spec model_to_as(EventModel.t()) :: map()
+  def model_to_as(%EventModel{} = event) do
+    %{
+      "type" => "Event",
+      "to" => ["https://www.w3.org/ns/activitystreams#Public"],
+      "title" => event.title,
+      "actor" => event.organizer_actor.url,
+      "uuid" => event.uuid,
+      "category" => event.category,
+      "summary" => event.description,
+      "publish_at" => (event.publish_at || event.inserted_at) |> DateTime.to_iso8601(),
+      "updated_at" => event.updated_at |> DateTime.to_iso8601(),
+      "id" => event.url
+    }
+  end
+end