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+# Copyright The OpenTelemetry Authors
+# SPDX-License-Identifier: Apache-2.0
+
+defmodule FlagdUiWeb do
+  @moduledoc """
+  The entrypoint for defining your web interface, such
+  as controllers, components, channels, and so on.
+
+  This can be used in your application as:
+
+      use FlagdUiWeb, :controller
+      use FlagdUiWeb, :html
+
+  The definitions below will be executed for every controller,
+  component, etc, so keep them short and clean, focused
+  on imports, uses and aliases.
+
+  Do NOT define functions inside the quoted expressions
+  below. Instead, define additional modules and import
+  those modules here.
+  """
+
+  def static_paths, do: ~w(assets fonts images favicon.ico robots.txt)
+
+  def router do
+    quote do
+      use Phoenix.Router, helpers: false
+
+      # Import common connection and controller functions to use in pipelines
+      import Plug.Conn
+      import Phoenix.Controller
+      import Phoenix.LiveView.Router
+    end
+  end
+
+  def channel do
+    quote do
+      use Phoenix.Channel
+    end
+  end
+
+  def controller do
+    quote do
+      use Phoenix.Controller, formats: [:html, :json]
+
+      use Gettext, backend: FlagdUiWeb.Gettext
+
+      import Plug.Conn
+
+      unquote(verified_routes())
+    end
+  end
+
+  def live_view do
+    quote do
+      use Phoenix.LiveView
+
+      unquote(html_helpers())
+    end
+  end
+
+  def live_component do
+    quote do
+      use Phoenix.LiveComponent
+
+      unquote(html_helpers())
+    end
+  end
+
+  def html do
+    quote do
+      use Phoenix.Component
+
+      # Import convenience functions from controllers
+      import Phoenix.Controller,
+        only: [get_csrf_token: 0, view_module: 1, view_template: 1]
+
+      # Include general helpers for rendering HTML
+      unquote(html_helpers())
+    end
+  end
+
+  defp html_helpers do
+    quote do
+      # Translation
+      use Gettext, backend: FlagdUiWeb.Gettext
+
+      # HTML escaping functionality
+      import Phoenix.HTML
+      # Core UI components
+      import FlagdUiWeb.CoreComponents
+
+      # Common modules used in templates
+      alias Phoenix.LiveView.JS
+      alias FlagdUiWeb.Layouts
+
+      # Routes generation with the ~p sigil
+      unquote(verified_routes())
+    end
+  end
+
+  def verified_routes do
+    quote do
+      use Phoenix.VerifiedRoutes,
+        endpoint: FlagdUiWeb.Endpoint,
+        router: FlagdUiWeb.Router,
+        statics: FlagdUiWeb.static_paths()
+    end
+  end
+
+  @doc """
+  When used, dispatch to the appropriate controller/live_view/etc.
+  """
+  defmacro __using__(which) when is_atom(which) do
+    apply(__MODULE__, which, [])
+  end
+end