Add proxy route and proxify pics everywhere

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

lib/service/metadata/actor.ex

@@ -1,6 +1,7 @@
 defimpl Mobilizon.Service.Metadata, for: Mobilizon.Actors.Actor do
   alias Phoenix.HTML.Tag
   alias Mobilizon.Actors.Actor
+  alias MobilizonWeb.MediaProxy
 
   def build_tags(%Actor{} = actor) do
     tags = [
@@ -15,7 +16,8 @@ defimpl Mobilizon.Service.Metadata, for: Mobilizon.Actors.Actor do
     if is_nil(actor.avatar) do
       tags
     else
-      tags ++ [Tag.tag(:meta, property: "og:image", content: actor.avatar.url)]
+      tags ++
+        [Tag.tag(:meta, property: "og:image", content: actor.avatar.url |> MediaProxy.url())]
     end
   end
 end

lib/service/metadata/event.ex

@@ -3,6 +3,7 @@ defimpl Mobilizon.Service.Metadata, for: Mobilizon.Events.Event do
   alias Phoenix.HTML.Tag
   alias Mobilizon.Events.Event
   alias MobilizonWeb.JsonLD.ObjectView
+  alias MobilizonWeb.MediaProxy
 
   def build_tags(%Event{} = event) do
     tags = [
@@ -18,7 +19,10 @@ defimpl Mobilizon.Service.Metadata, for: Mobilizon.Events.Event do
       else
         tags ++
           [
-            Tag.tag(:meta, property: "og:image", content: event.picture.file.url)
+            Tag.tag(:meta,
+              property: "og:image",
+              content: event.picture.file.url |> MediaProxy.url()
+            )
           ]
       end