rule "DWD Warnungen"
when
    // Time cron "0 */30 * ? * *"  //every 30 Minutes
    Time cron "0 * * ? * *"    //every 1 Minute
then
    var String jsonString = sendHttpGetRequest("https://www.dwd.de/DWD/warnungen/warnapp/json/warnings.json")
    var String newString = transform("JS", "Wetter_DWD_getWarningsJSON.js", jsonString)
    if (newString !="NULL") {
        var String newStart = transform("JSONPATH", "$.start", newString)
        var DateTimeType timestart = DateTimeType.valueOf(newStart)
        DWD_Warnung_start.postUpdate(timestart)
        var String newEnd = transform("JSONPATH", "$.end", newString)
        if (newEnd !==null) {
            // var DateTime timeend = new DateTime(Long::parseLong(newEnd))
            var DateTimeType timeend = DateTimeType.valueOf(newEnd)
            DWD_Warnung_end.postUpdate(timeend)
        }

        DWD_Warnung_level.postUpdate(transform("JSONPATH","$.level",newString))
        DWD_Warnung_description.postUpdate(transform("JSONPATH","$.description",newString))
        DWD_Warnung_headline.postUpdate(transform("JSONPATH","$.headline",newString))
        DWD_Warnung_instruction.postUpdate(transform("JSONPATH","$.instruction",newString))
        DWD_Warnung_event.postUpdate(transform("JSONPATH","$.event",newString))
    }

    if (newString =="NULL") {
        DWD_Warnung_start.postUpdate("NULL")
        DWD_Warnung_end.postUpdate("NULL")
        DWD_Warnung_level.postUpdate(0)
        DWD_Warnung_description.postUpdate("-")
        DWD_Warnung_headline.postUpdate("derzeit keine Warnungen")
        DWD_Warnung_instruction.postUpdate("-")
        DWD_Warnung_event.postUpdate("-")        
    }
end