add avatars to post and comment json views

lib/philomena_web/views/api/json/comment_view.ex

@@ -36,11 +36,8 @@ defmodule PhilomenaWeb.Api.Json.CommentView do
       id: comment.id,
       image_id: comment.image_id,
       user_id: if(not comment.anonymous, do: comment.user_id),
-      author:
-        if(comment.anonymous or is_nil(comment.user),
-          do: UserAttributionView.anonymous_name(comment),
-          else: comment.user.name
-        ),
+      author: UserAttributionView.name(comment),
+      avatar: UserAttributionView.avatar_url(comment),
       body: nil,
       created_at: comment.created_at,
       updated_at: comment.updated_at,
@@ -54,11 +51,8 @@ defmodule PhilomenaWeb.Api.Json.CommentView do
       id: comment.id,
       image_id: comment.image_id,
       user_id: if(not comment.anonymous, do: comment.user_id),
-      author:
-        if(comment.anonymous or is_nil(comment.user),
-          do: UserAttributionView.anonymous_name(comment),
-          else: comment.user.name
-        ),
+      author: UserAttributionView.name(comment),
+      avatar: UserAttributionView.avatar_url(comment),
       body: comment.body,
       created_at: comment.created_at,
       updated_at: comment.updated_at,

lib/philomena_web/views/api/json/forum/topic/post_view.ex

@@ -30,11 +30,8 @@ defmodule PhilomenaWeb.Api.Json.Forum.Topic.PostView do
     %{
       id: post.id,
       user_id: if(not post.anonymous, do: post.user_id),
-      author:
-        if(post.anonymous or is_nil(post.user),
-          do: UserAttributionView.anonymous_name(post),
-          else: post.user.name
-        ),
+      author: UserAttributionView.name(post),
+      avatar: UserAttributionView.avatar_url(post),
       body: nil,
       created_at: post.created_at,
       updated_at: post.updated_at,
@@ -47,11 +44,8 @@ defmodule PhilomenaWeb.Api.Json.Forum.Topic.PostView do
     %{
       id: post.id,
       user_id: if(not post.anonymous, do: post.user_id),
-      author:
-        if(post.anonymous or is_nil(post.user),
-          do: UserAttributionView.anonymous_name(post),
-          else: post.user.name
-        ),
+      author: UserAttributionView.name(post),
+      avatar: UserAttributionView.avatar_url(post),
       body: post.body,
       created_at: post.created_at,
       updated_at: post.updated_at,

lib/philomena_web/views/user_attribution_view.ex

@@ -3,11 +3,26 @@ defmodule PhilomenaWeb.UserAttributionView do
   use Bitwise
 
   alias Philomena.Attribution
+  alias PhilomenaWeb.AvatarGeneratorView
 
   def anonymous?(object) do
     Attribution.anonymous?(object)
   end
 
+  def name(object) do
+    case is_nil(object.user) or anonymous?(object) do
+      true -> anonymous_name(object)
+      _false -> object.user.name
+    end
+  end
+
+  def avatar_url(object) do
+    case is_nil(object.user) or anonymous?(object) do
+      true -> anonymous_avatar_url(anonymous_name(object))
+      _false -> user_avatar_url(object)
+    end
+  end
+
   def anonymous_name(object, reveal_anon? \\ false) do
     salt = anonymous_name_salt()
     id = Attribution.object_identifier(object)
@@ -28,7 +43,7 @@ defmodule PhilomenaWeb.UserAttributionView do
     class = Enum.join(["image-constrained", class], " ")
 
     content_tag :div, class: class do
-      PhilomenaWeb.AvatarGeneratorView.generated_avatar(name)
+      AvatarGeneratorView.generated_avatar(name)
     end
   end
 
@@ -40,14 +55,31 @@ defmodule PhilomenaWeb.UserAttributionView do
   def user_avatar(%{user: %{avatar: nil}} = object, class),
     do: anonymous_avatar(object.user.name, class)
 
-  def user_avatar(%{user: %{avatar: avatar}}, class) do
+  def user_avatar(object, class) do
     class = Enum.join(["image-constrained", class], " ")
 
     content_tag :div, class: class do
-      img_tag(avatar_url_root() <> "/" <> avatar)
+      user_avatar_url(object)
     end
   end
 
+  def user_avatar_url(%{user: %{avatar: nil}} = object) do
+    anonymous_avatar_url(object.user.name)
+  end
+
+  def user_avatar_url(%{user: %{avatar: avatar}}) do
+    avatar_url_root() <> "/" <> avatar
+  end
+
+  def anonymous_avatar_url(name) do
+    svg =
+      name
+      |> AvatarGeneratorView.generated_avatar()
+      |> Enum.map_join(&safe_to_string/1)
+
+    "data:image/svg+xml;base64," <> Base.encode64(svg)
+  end
+
   def user_labels(%{user: user}) do
     []
     |> personal_title(user)