Xdrip: Please add an alert for G6 sensor expiry

[Navid200]

It would be great if there was the possibility of setting an alert for a given number of hours to the expiry time of a G6 sensor.
So, the user would be able to enter the hours to expiry as a parameter.
Even if it was possible to get an alert 12 hours to the expiry of the sensor, it would better than nothing.

[Navid200]

Reading my own description now, a few days later, I can see that the incentive may not be clear.

I get a notification, from xDrip, when the sensor stops.
But, if I get that notifications at 2AM, when I am sleep, it may not be the best time for restarting the sensor.

On the other hand, if I get a warning that the sensor will expire in 12 hours (at 2PM), that will give me a chance to plan my day with that in mind and plan to restart the sensor at the best possible time based on when I plan to eat and when I may have a meeting and when I may want to go to sleep.

[davidmtml]

I agree this would be a great thing. Especially with the newer sensors where you can't easily restart, and can't fallback to xDrip algorithm. I would like it to give a 24-hour heads up.

"Your sensor will stop/expire in 24 hours".

This would give me a full day to figure out the best time to start a new sensor/restart the current one.

[tolot27]

Hence, a notification between 12 h to 24 h ahead of the expiry but during daytime?

[Navid200]

I would be careful about making it too complicated.
If it is manageable to implement it such that the user has the choice of the warning time, that's perfect.
If that's too difficult and it has to be decided ahead for everyone, I would just make it a constant period ahead of the expiry.

I would avoid "but during the day". That would be discriminatory against individuals who work at night, like nurses, or firefighters etc.

[davidmtml]

User-defined would be great, but I think if it's going to be a set amount for everybody, 24 hours would be better than 12 for a few reasons.

1. It just gives you a little bit more time to prepare, but not too much.
2. This way, for most people, the alert would come at a time when you ARE already awake. I work a normal schedule, so obviously I'm not putting in a new sensor at 4am or anything. But I very well might put in a new sensor at 4pm. I would prefer my notification to come 24 hours before, not 12 hours before at 4am. I guess I would put it this way. Take any time that you are awake. Substract 12 hours. There's a good chance you would be sleeping during that time.

[tolot27]

PR #1136 addresses the same feature request but for Libre sensors (#570).