How precise do you need it to be? (Precision is a different issue than consistency).
I’ve found the hue motion sensors, $39, attached to the hue bridge are very consistent in a broad range setting, basically just trying to pick up when it shifts from day to dusk. But they’re not precise.
https://www.amazon.com/Philips-464602-Hue-Motion-Sensor/dp/B01KJYSOGI
There are some community members using them connected directly to smart things:
The cao gadgets Kumo wireless tag, ALS Pro model, $36, gives you a lot more precision and can detect multiple different types of light events, and can be integrated cloud to cloud or through the IFTTT service/channel. However, you also have to buy their $49 ethernet bridge (one Bridge for every 40 tags). But if you’re looking for something precise, it’s definitely worth considering