feat: admin panel

I just added is_admin field to user schema, /admin scope,
admin page controller and view.

No extra functions were implemented.

assets/css/admin.css

@@ -0,0 +1,10 @@
+.admin-panel {
+  display: flex;
+  gap: 16px;
+  margin-top: 16px;
+}
+
+.admin-panel ul {
+  padding: 0;
+  margin: 0;
+}

assets/css/app.css

@@ -1,5 +1,6 @@
 @import "./core_components.css";
 @import "./flash.css";
+@import "./admin.css";
 
 :root {
   --bg: #13151a;

lib/comfycamp/accounts/user.ex

@@ -7,6 +7,7 @@ defmodule Comfycamp.Accounts.User do
     field :password, :string, virtual: true, redact: true
     field :hashed_password, :string, redact: true
     field :confirmed_at, :naive_datetime
+    field :is_admin, :boolean, default: false
 
     timestamps(type: :utc_datetime)
   end

lib/comfycamp_web/components/layouts/admin.html.heex

@@ -0,0 +1,30 @@
+<.flash_group flash={@flash} />
+
+<main>
+  <div class="limiter">
+    <h1>Comfycamp - админка</h1>
+    <.link href={~p"/"}>
+      Главная страница
+    </.link>
+    <div class="admin-panel">
+      <ul>
+        <li>
+          <.link href={~p"/admin/posts"}>
+            Посты
+          </.link>
+        </li>
+        <li>
+          <.link href={~p"/admin/users"}>
+            Пользователи
+          </.link>
+        </li>
+        <li>
+          <.link href={~p"/admin/services"}>
+            Сервисы
+          </.link>
+        </li>
+      </ul>
+      <%= @inner_content %>
+    </div>
+  </div>
+</main>

lib/comfycamp_web/components/navbar.ex

@@ -23,6 +23,9 @@ defmodule ComfycampWeb.NavBar do
       <div class="space" />
 
       <%= if @current_user do %>
+        <.link :if={@current_user.is_admin} href={~p"/admin"}>
+          Админка
+        </.link>
         <.link href={~p"/users/settings"}>
           Настройки
         </.link>

lib/comfycamp_web/controllers/admin_page_controller.ex

@@ -0,0 +1,27 @@
+defmodule ComfycampWeb.AdminPageController do
+  use ComfycampWeb, :controller
+
+  def home(conn, _params) do
+    conn
+    |> put_layout(html: :admin)
+    |> render(:home, page_title: "Админка")
+  end
+
+  def posts(conn, _params) do
+    conn
+    |> put_layout(html: :admin)
+    |> render(:home, page_title: "Админка")
+  end
+
+  def users(conn, _params) do
+    conn
+    |> put_layout(html: :admin)
+    |> render(:home, page_title: "Админка")
+  end
+
+  def services(conn, _params) do
+    conn
+    |> put_layout(html: :admin)
+    |> render(:home, page_title: "Админка")
+  end
+end

lib/comfycamp_web/controllers/admin_page_html.ex

@@ -0,0 +1,9 @@
+defmodule ComfycampWeb.AdminPageHTML do
+  use ComfycampWeb, :html
+
+  def home(assigns) do
+    ~H"""
+    Добро пожаловать, админ.
+    """
+  end
+end

lib/comfycamp_web/router.ex

@@ -84,4 +84,13 @@ defmodule ComfycampWeb.Router do
       live "/users/confirm", UserConfirmationInstructionsLive, :new
     end
   end
+
+  scope "/admin", ComfycampWeb do
+    pipe_through [:browser, :require_authenticated_user, :ensure_admin]
+
+    get "/", AdminPageController, :home
+    get "/posts", AdminPageController, :posts
+    get "/users", AdminPageController, :users
+    get "/services", AdminPageController, :services
+  end
 end

lib/comfycamp_web/user_auth.ex

@@ -213,6 +213,17 @@ defmodule ComfycampWeb.UserAuth do
     end
   end
 
+  def ensure_admin(conn, _opts) do
+    if conn.assigns[:current_user].is_admin do
+      conn
+    else
+      conn
+      |> put_flash(:error, "Вы должны быть администратором для просмотра.")
+      |> redirect(to: ~p"/")
+      |> halt()
+    end
+  end
+
   defp put_token_in_session(conn, token) do
     conn
     |> put_session(:user_token, token)

priv/repo/migrations/20240728162610_add_is_admin_field.exs

@@ -0,0 +1,9 @@
+defmodule Comfycamp.Repo.Migrations.AddIsAdminField do
+  use Ecto.Migration
+
+  def change do
+    alter table(:users) do
+      add :is_admin, :boolean, null: false, default: false
+    end
+  end
+end