From bda3f949b8f3e081d395a6938a4db2922331b0c5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Gilberto=20Balsini=20Moura?=
 <joaobalsini@Joaos-MacBook-Pro-2.local>
Date: Sat, 12 Sep 2020 21:37:05 -0300
Subject: [PATCH] Add functions to add admins

---
 lib/real_estate/accounts.ex        | 18 ++++++++++++++++++
 lib/real_estate/accounts/user.ex   | 14 ++++++++++++++
 test/real_estate/accounts_test.exs | 15 ++++++++++++++-
 3 files changed, 46 insertions(+), 1 deletion(-)

diff --git a/lib/real_estate/accounts.ex b/lib/real_estate/accounts.ex
index 6c5e3f8..b7d3a59 100644
--- a/lib/real_estate/accounts.ex
+++ b/lib/real_estate/accounts.ex
@@ -79,6 +79,24 @@ defmodule RealEstate.Accounts do
     |> Repo.insert()
   end
 
+  @doc """
+  Registers an admin.
+
+  ## Examples
+
+      iex> register_admin(%{field: value})
+      {:ok, %User{}}
+
+      iex> register_admin(%{field: bad_value})
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def register_admin(attrs) do
+    %User{}
+    |> User.admin_registration_changeset(attrs)
+    |> Repo.insert()
+  end
+
   @doc """
   Returns an `%Ecto.Changeset{}` for tracking user changes.
 
diff --git a/lib/real_estate/accounts/user.ex b/lib/real_estate/accounts/user.ex
index d53a15a..2a4e286 100644
--- a/lib/real_estate/accounts/user.ex
+++ b/lib/real_estate/accounts/user.ex
@@ -34,6 +34,15 @@ defmodule RealEstate.Accounts.User do
     |> validate_password()
   end
 
+  @doc """
+  A user changeset for registering admins.
+  """
+  def admin_registration_changeset(user, attrs) do
+    user
+    |> registration_changeset(attrs)
+    |> prepare_changes(&set_admin_role/1)
+  end
+
   defp validate_email(changeset) do
     changeset
     |> validate_required([:email])
@@ -61,6 +70,11 @@ defmodule RealEstate.Accounts.User do
     |> delete_change(:password)
   end
 
+  defp set_admin_role(changeset) do
+    changeset
+    |> put_change(:role, :admin)
+  end
+
   @doc """
   A user changeset for changing the email.
 
diff --git a/test/real_estate/accounts_test.exs b/test/real_estate/accounts_test.exs
index 6f683a7..3c37fbc 100644
--- a/test/real_estate/accounts_test.exs
+++ b/test/real_estate/accounts_test.exs
@@ -83,13 +83,26 @@ defmodule RealEstate.AccountsTest do
       assert "has already been taken" in errors_on(changeset).email
     end
 
-    test "registers users with a hashed password" do
+    test "registers users with a hashed password and sets role to :user" do
       email = unique_user_email()
       {:ok, user} = Accounts.register_user(%{email: email, password: valid_user_password()})
       assert user.email == email
       assert is_binary(user.hashed_password)
       assert is_nil(user.confirmed_at)
       assert is_nil(user.password)
+      assert user.role == :user
+    end
+  end
+
+  describe "register_admin/1" do
+    test "registers users with a hashed password and sets role to :admin" do
+      email = unique_user_email()
+      {:ok, user} = Accounts.register_admin(%{email: email, password: valid_user_password()})
+      assert user.email == email
+      assert is_binary(user.hashed_password)
+      assert is_nil(user.confirmed_at)
+      assert is_nil(user.password)
+      assert user.role == :admin
     end
   end