This will add the endpoint to the API.

lib/philomena_web/award_json.ex

@@ -0,0 +1,16 @@
+defmodule PhilomenaWeb.AwardsJson do
+
+  def as_json(_conn, award) do
+    %{
+      image_url: badge_url_root() <> "/" <> award.badge.image,
+      title: award.badge.title,
+      id: award.badge_id,
+      label: award.label,
+      awarded_on: award.awarded_on
+    }
+  end
+
+  defp badge_url_root do
+    Application.get_env(:philomena, :badge_url_root)
+  end
+end

lib/philomena_web/controllers/api/json/profile_controller.ex

@@ -0,0 +1,26 @@
+defmodule PhilomenaWeb.Api.Json.ProfileController do
+  use PhilomenaWeb, :controller
+
+  alias PhilomenaWeb.UserJson
+  alias Philomena.Users.User
+  alias Philomena.Repo
+  import Ecto.Query
+
+  def show(conn, %{"id" => id}) do
+    profile =
+      User
+      |> where(id: ^id)
+      |> preload([public_links: :tag, awards: :badge])
+      |> Repo.one()
+
+    cond do
+      is_nil(profile) or profile.deleted_at ->
+        conn
+        |> put_status(:not_found)
+        |> text("")
+
+      true ->
+        json(conn, %{user: UserJson.as_json(conn, profile)})
+    end
+  end
+end

lib/philomena_web/links_json.ex

@@ -0,0 +1,21 @@
+defmodule PhilomenaWeb.LinksJson do
+
+  def as_json(_conn, %{public: false}), do: nil
+
+  def as_json(_conn, link) do
+    %{
+      user_id: link.user_id,
+      created_at: link.created_at,
+      state: link.aasm_state,
+      tag_id: tag_id(link.tag)
+    }
+  end
+
+  defp tag_id(nil) do
+    nil
+  end
+
+  defp tag_id(tag) do
+    tag.id
+  end
+end

lib/philomena_web/router.ex

@@ -118,6 +118,7 @@ defmodule PhilomenaWeb.Router do
     resources "/tags", TagController, only: [:show]
     resources "/comments", CommentController, only: [:show]
     resources "/posts", PostController, only: [:show]
+    resources "/profiles", ProfileController, only: [:show]
 
     resources "/forums", ForumController, only: [:show, :index] do
       resources "/topics", Forum.TopicController, only: [:show, :index] do

lib/philomena_web/user_json.ex

@@ -0,0 +1,31 @@
+defmodule PhilomenaWeb.UserJson do
+
+  alias PhilomenaWeb.LinksJson
+  alias PhilomenaWeb.AwardsJson
+
+  def as_json(conn, user) do
+    %{
+      id: user.id,
+      name: user.name,
+      slug: user.slug,
+      role: role(user),
+      description: user.description,
+      avatar_url: user.avatar,
+      created_at: user.created_at,
+      comments_count: user.comments_posted_count,
+      uploads_count: user.uploads_count,
+      posts_count: user.forum_posts_count,
+      topics_count: user.topic_count,
+      links: Enum.map(user.public_links, &LinksJson.as_json(conn, &1)),
+      awards: Enum.map(user.awards, &AwardsJson.as_json(conn, &1))
+    }
+  end
+
+  defp role(%{hide_default_role: true}) do
+    "user"
+  end
+
+  defp role(user) do
+    user.role
+  end
+end