BangleApps/apps/activityreminder/boot.js

function run() {
    if (isNotWorn()) return;
    let now = new Date();
    let h = now.getHours();

    if (isDuringAlertHours(h)) {
        let health = Bangle.getHealthStatus("day");
        if (health.steps - activityreminder_data.stepsOnDate >= activityreminder_settings.minSteps // more steps made than needed
            || health.steps < activityreminder_data.stepsOnDate) { // new day or reboot of the watch
            activityreminder_data.stepsOnDate = health.steps;
            activityreminder_data.stepsDate = now;
            activityreminder.saveData(activityreminder_data);
            /* todo in a futur release 
            Add settimer to trigger like 30 secs after going in this part cause the person have been walking 
            (pass some argument to run() to handle long walks and not triggering so often)
            */
        }
        
        if(activityreminder.mustAlert(activityreminder_data, activityreminder_settings)){
            load('activityreminder.app.js');
        }
    }

}

function isNotWorn() {
    // todo in a futur release check temperature and mouvement in a futur release 
    return Bangle.isCharging();
}

function isDuringAlertHours(h) {
    if(activityreminder_settings.startHour < activityreminder_settings.endHour){ // not passing through midnight
        return (h >= activityreminder_settings.startHour && h < activityreminder_settings.endHour)
    } else{ // passing through midnight
        reutn (h >= activityreminder_settings.startHour || h < activityreminder_settings.endHour)
    }
}

Bangle.on('midnight', function() {
    /*
    Usefull trick to have the app working smothly for people using it at night 
    */
    let now = new Date();
    let h = now.getHours();
    if (activityreminder_settings.enabled && isDuringAlertHours(h)){
        // updating only the steps and keeping the original stepsDate on purpose 
        activityreminder_data.stepsOnDate = 0;
        activityreminder.saveData(activityreminder_data);
    }
});

const activityreminder = require("activityreminder");
const activityreminder_settings = activityreminder.loadSettings();
if (activityreminder_settings.enabled) {
    const activityreminder_data = activityreminder.loadData();
    if(activityreminder_data.firstLoad){
        activityreminder_data.firstLoad = false;
        activityreminder.saveData(activityreminder_data);
    }
    setInterval(run, 60000);
    /* todo in a futur release 
    increase setInterval time to something that is still sensible (5 mins ?)
    when we added a settimer
    */
}