defmodule ToweropsWeb.RemoteIpTest do
  use ToweropsWeb.ConnCase, async: true

  alias ToweropsWeb.RemoteIp

  test "extracts the first forwarded IP from conn headers", %{conn: conn} do
    conn =
      conn
      |> put_req_header("x-forwarded-for", "203.0.113.10, 10.0.0.1")
      |> put_req_header("x-real-ip", "198.51.100.1")

    assert RemoteIp.from_conn(conn) == "203.0.113.10"
  end

  test "formats IPv6 addresses in uppercase hex" do
    assert RemoteIp.format({8193, 3512, 0, 0, 0, 0, 0, 1}) == "2001:DB8:0:0:0:0:0:1"
  end

  describe "from_socket/1" do
    test "returns formatted IP from peer_data in assigns" do
      socket = %Phoenix.Socket{
        assigns: %{peer_data: %{address: {192, 168, 1, 42}, port: 12_345}}
      }

      assert RemoteIp.from_socket(socket) == "192.168.1.42"
    end

    test "returns nil when peer_data is missing" do
      socket = %Phoenix.Socket{assigns: %{}}
      assert RemoteIp.from_socket(socket) == nil
    end

    test "returns nil when peer_data has no address tuple" do
      socket = %Phoenix.Socket{assigns: %{peer_data: %{}}}
      assert RemoteIp.from_socket(socket) == nil
    end
  end
end