defmodule ToweropsWeb.Plugs.UpdateSessionActivityTest do
  use ToweropsWeb.ConnCase, async: false

  alias Towerops.Accounts.BrowserSession
  alias ToweropsWeb.Plugs.UpdateSessionActivity

  describe "init/1" do
    test "passes through opts unchanged" do
      assert UpdateSessionActivity.init(:some_opts) == :some_opts
    end
  end

  describe "call/2" do
    test "passes through when no user_token in session", %{conn: conn} do
      conn =
        conn
        |> init_test_session(%{})
        |> UpdateSessionActivity.call(%{})

      assert conn.state == :unset
    end

    test "starts background task when user_token present", %{conn: conn} do
      conn =
        conn
        |> init_test_session(%{user_token: "existing-token"})
        |> UpdateSessionActivity.call(%{})

      assert conn.state == :unset
    end

    test "starts background task when user_token and live_socket_id present", %{conn: conn} do
      conn =
        conn
        |> init_test_session(%{
          user_token: "existing-token",
          live_socket_id: "users_sessions:abc"
        })
        |> UpdateSessionActivity.call(%{})

      assert conn.state == :unset
    end
  end

  describe "session_timed_out?/1" do
    test "returns true when session has been inactive for more than 30 minutes" do
      old_time = DateTime.add(DateTime.utc_now(), -31, :minute)
      session = %{last_activity_at: old_time}

      assert UpdateSessionActivity.session_timed_out?(session)
    end

    test "returns false when session was recently active" do
      recent_time = DateTime.add(DateTime.utc_now(), -5, :second)
      session = %{last_activity_at: recent_time}

      refute UpdateSessionActivity.session_timed_out?(session)
    end

    test "uses inserted_at when last_activity_at is nil" do
      old_time = DateTime.add(DateTime.utc_now(), -31, :minute)
      session = %{last_activity_at: nil, inserted_at: old_time}

      assert UpdateSessionActivity.session_timed_out?(session)
    end

    test "returns false for recent inserted_at when last_activity_at is nil" do
      recent_time = DateTime.add(DateTime.utc_now(), -5, :second)
      session = %{last_activity_at: nil, inserted_at: recent_time}

      refute UpdateSessionActivity.session_timed_out?(session)
    end

    test "returns false at exactly 30 minutes of inactivity" do
      borderline_time = DateTime.add(DateTime.utc_now(), -30, :minute)
      session = %{last_activity_at: borderline_time}

      refute UpdateSessionActivity.session_timed_out?(session)
    end

    test "returns true just over 30 minutes of inactivity" do
      old_time = DateTime.add(DateTime.utc_now(), -30, :minute)
      old_time = DateTime.add(old_time, -1, :second)
      session = %{last_activity_at: old_time}

      assert UpdateSessionActivity.session_timed_out?(session)
    end
  end

  describe "handle_session_activity/2" do
    test "returns :ok when no session found for token" do
      assert :ok == UpdateSessionActivity.handle_session_activity("nonexistent-token", nil)
    end

    test "returns :ok when session found and not timed out" do
      user = Towerops.AccountsFixtures.user_fixture()
      {_token, user_token} = Towerops.Accounts.generate_user_session_token_with_record(user)

      %BrowserSession{}
      |> BrowserSession.create_changeset(%{
        user_id: user.id,
        user_token_id: user_token.id,
        ip_address: "127.0.0.1",
        last_activity_at: DateTime.utc_now(),
        expires_at: DateTime.add(DateTime.utc_now(), 7, :day)
      })
      |> Towerops.Repo.insert!()

      assert :ok == UpdateSessionActivity.handle_session_activity(user_token.id, nil)
    end
  end

  describe "revoke_inactive_session/2" do
    test "returns nil when no live_socket_id" do
      user = Towerops.AccountsFixtures.user_fixture()
      token = Towerops.Accounts.generate_user_session_token(user)

      assert nil == UpdateSessionActivity.revoke_inactive_session(token, nil)
    end

    test "broadcasts disconnect when live_socket_id present" do
      user = Towerops.AccountsFixtures.user_fixture()
      token = Towerops.Accounts.generate_user_session_token(user)

      ToweropsWeb.Endpoint.subscribe("users_sessions:test-session")
      assert :ok == UpdateSessionActivity.revoke_inactive_session(token, "users_sessions:test-session")
      assert_receive %Phoenix.Socket.Broadcast{event: "disconnect", topic: "users_sessions:test-session"}
    end
  end
end