Added mix commands to manage users and view actors

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

lib/mix/tasks/mobilizon/users/show.ex

@@ -0,0 +1,48 @@
+defmodule Mix.Tasks.Mobilizon.Users.Show do
+  @moduledoc """
+  Task to display an user details
+  """
+  use Mix.Task
+  alias Mobilizon.Users
+  alias Mobilizon.Users.User
+  alias Mobilizon.Actors.Actor
+
+  @shortdoc "Show a Mobilizon user details"
+
+  @impl Mix.Task
+  def run([email]) do
+    Mix.Task.run("app.start")
+
+    with {:ok, %User{} = user} <- Users.get_user_by_email(email),
+         actors <- Users.get_actors_for_user(user) do
+      Mix.shell().info("""
+      Informations for the user #{user.email}:
+        - Activated: #{user.confirmed_at}
+        - Role: #{user.role}
+        #{display_actors(actors)}
+      """)
+    else
+      {:error, :user_not_found} ->
+        Mix.raise("Error: No such user")
+    end
+  end
+
+  def run(_) do
+    Mix.raise("mobilizon.users.show requires an email as argument")
+  end
+
+  defp display_actors([]), do: ""
+
+  defp display_actors(actors) do
+    """
+    Identities (#{length(actors)}):
+    #{actors |> Enum.map(&display_actor/1) |> Enum.join("")}
+    """
+  end
+
+  defp display_actor(%Actor{} = actor) do
+    """
+        - @#{actor.preferred_username} / #{actor.name}
+    """
+  end
+end