defmodule ToweropsWeb.HealthControllerTest do
  use ToweropsWeb.ConnCase, async: false

  describe "GET /health" do
    test "returns 200 when database is connected", %{conn: conn} do
      conn = get(conn, "/health")
      body = response(conn, 200)
      result = Jason.decode!(body)
      assert result["status"] == "ok"
      assert result["database"] == "connected"
      assert result["version"]
    end

    test "reports redis status as not_configured when redis is not configured", %{conn: conn} do
      previous = Application.get_env(:towerops, :redis)
      Application.put_env(:towerops, :redis, [])

      try do
        conn = get(conn, "/health")
        result = Jason.decode!(response(conn, 200))
        assert result["redis"] == "not_configured"
      after
        if previous do
          Application.put_env(:towerops, :redis, previous)
        else
          Application.delete_env(:towerops, :redis)
        end
      end
    end

    test "reports redis as connected when configured to a real instance", %{conn: conn} do
      previous = Application.get_env(:towerops, :redis)
      Application.put_env(:towerops, :redis, host: "localhost", port: 6379)

      try do
        conn = get(conn, "/health")
        # Either 200 (redis up) or 503 (redis unreachable in CI) — both branches
        # exercise the configured-redis code path. We just assert the response
        # is well-formed JSON with a redis field.
        body = response(conn, conn.status)
        result = Jason.decode!(body)
        assert result["redis"] in ["connected", "disconnected"]
      after
        if previous do
          Application.put_env(:towerops, :redis, previous)
        else
          Application.delete_env(:towerops, :redis)
        end
      end
    end
  end
end