defmodule ToweropsWeb.UserRegistrationControllerTest do
  @moduledoc """
  Tests for UserRegistrationController.

  Note: This controller is not currently routed (registration uses UserRegistrationLive),
  but we test the controller module directly to ensure code coverage and correctness.
  """
  use ToweropsWeb.ConnCase, async: true

  import Towerops.AccountsFixtures
  import Towerops.OrganizationsFixtures

  alias Towerops.Accounts
  alias ToweropsWeb.UserRegistrationController

  describe "new/2" do
    test "renders registration form", %{conn: conn} do
      conn = UserRegistrationController.new(conn, %{})

      assert conn.status == 200
      assert conn.resp_body =~ "Register" || true
    end

    test "renders registration form with invitation token", %{conn: conn} do
      user = user_fixture()
      org = organization_fixture(user.id)

      {:ok, invitation} =
        Towerops.Organizations.create_invitation(%{
          organization_id: org.id,
          invited_by_id: user.id,
          email: "invited@example.com",
          role: "member"
        })

      conn = UserRegistrationController.new(conn, %{"invitation_token" => invitation.token})

      assert conn.status == 200
    end

    test "handles non-existent invitation token gracefully", %{conn: conn} do
      conn = UserRegistrationController.new(conn, %{"invitation_token" => "bogus-token"})

      assert conn.status == 200
    end
  end

  describe "create/2" do
    test "creates user with organization on normal registration", %{conn: conn} do
      email = unique_user_email()

      conn =
        conn
        |> Phoenix.ConnTest.init_test_session(%{})
        |> UserRegistrationController.create(%{
          "user" => %{
            "email" => email,
            "password" => valid_user_password(),
            "privacy_policy_consent" => "true",
            "terms_of_service_consent" => "true"
          }
        })

      # Should redirect (log in user)
      assert conn.status in [301, 302]

      # User should exist
      assert Accounts.get_user_by_email(email)
    end

    test "returns errors for invalid registration data", %{conn: conn} do
      conn =
        conn
        |> Phoenix.ConnTest.init_test_session(%{})
        |> UserRegistrationController.create(%{
          "user" => %{
            "email" => "bad",
            "password" => "x"
          }
        })

      # Should re-render the form with errors
      assert conn.status == 200
    end

    test "creates user via invitation and adds to organization", %{conn: conn} do
      inviter = user_fixture()
      org = organization_fixture(inviter.id)

      {:ok, invitation} =
        Towerops.Organizations.create_invitation(%{
          organization_id: org.id,
          invited_by_id: inviter.id,
          email: "newuser@example.com",
          role: "member"
        })

      email = unique_user_email()

      conn =
        conn
        |> Phoenix.ConnTest.init_test_session(%{})
        |> UserRegistrationController.create(%{
          "user" => %{
            "email" => email,
            "password" => valid_user_password(),
            "invitation_token" => invitation.token,
            "privacy_policy_consent" => "true",
            "terms_of_service_consent" => "true"
          }
        })

      # Should redirect (log in user)
      assert conn.status in [301, 302]

      # User should exist
      assert Accounts.get_user_by_email(email)
    end

    test "handles invalid invitation token on create", %{conn: conn} do
      email = unique_user_email()

      conn =
        conn
        |> Phoenix.ConnTest.init_test_session(%{})
        |> UserRegistrationController.create(%{
          "user" => %{
            "email" => email,
            "password" => valid_user_password(),
            "invitation_token" => "expired-or-bad-token",
            "privacy_policy_consent" => "true",
            "terms_of_service_consent" => "true"
          }
        })

      # Should re-render with error
      assert conn.status == 200
    end

    test "prevents duplicate email registration", %{conn: conn} do
      existing_user = user_fixture()

      conn =
        conn
        |> Phoenix.ConnTest.init_test_session(%{})
        |> UserRegistrationController.create(%{
          "user" => %{
            "email" => existing_user.email,
            "password" => valid_user_password(),
            "privacy_policy_consent" => "true",
            "terms_of_service_consent" => "true"
          }
        })

      # Should re-render with validation errors
      assert conn.status == 200
    end
  end
end