The local check Next Corona Wave can use for all countys in Germany to see the new cases in 7 days per 100,000 inhabitants. When the value is growing up 50, than start the state restrictions.

NextCoronaWave.ps1

#requires -Version 3.0
<#

    .SYNOPSIS
    This local check helps to know the next Corona Wave is starting.

    .DESCRIPTION
    The local check Next Corona Wave can use for all countys in Germany to see the new cases in 7 days
    per 100,000 inhabitants. When the value is growing up 50, than start the state restrictions.

    .EXAMPLE
    .\NextCoronaWave.ps1
    0 Corona_Warn_App count=;40;50;;  OK -  neue Fälle in den letzten 7 Tage pro 100.000 Einwohner im  
    in.\\nWenn der Schwellwert von 50 überstiegen ist wird es neue Restriktionen geben.
  
    .NOTES
    Author: Deo_Heo
    Last Updated: 13.08.2020
    Version: 0.1
  
    Requires:
    PowerShell

#> 


#OBJECTID choose under the following web page for the appropriate county:
#https://npgeo-corona-npgeo-de.hub.arcgis.com/datasets/917fc37a709542548cc3be077a786c17_0?geometry=-26.087%2C46.269%2C46.994%2C55.886
$objectid = 357
#set the warn value
$warn = 40
#set the crit value(should be left at 50)
$crit = 50
#set it the service name(it must be a word)
$servicename = "Corona_Warn_App"
#choice the language german, default is english
$ger = $true

$choice = 0
$crashed =''

Function GetContent {
    param(
    $objectid
    )
    #get json content
    try{
    $site = Invoke-WebRequest "https://services7.arcgis.com/mOBPykOjAyBO2ZKk/arcgis/rest/services/RKI_Landkreisdaten/FeatureServer/0/query?where=OBJECTID=%27$objectid%27&outFields=OBJECTID,BL,county,cases7_per_100k&returnGeometry=false&f=json" 
    IF ($site.StatusDescription -eq "OK"){
        $objoutput = New-Object -TypeName PSObject -Property @{
            value = $site.Content | ConvertFrom-Json
            status = $true
            }
        }
    ELSE{
        $objoutput = New-Object -TypeName PSObject -Property @{
            value = $site.StatusDescription
            status = $false
            }
        }
    }
    catch{
        $objoutput = New-Object -TypeName PSObject -Property @{
            value = $_
            status = $false
            }

        }
return $objoutput
}


$objoutput = GetContent -objectid $objectid


If ($objoutput.status){
    $lankreis = $objoutput.value.features.attributes.county
    $bundesland = $objoutput.value.features.attributes.BL
    $var = $objoutput.value.features.attributes.cases7_per_100k

    IF ($ger){
        #convert the value cases7_per_100k in the germany format
        $var = „{0:N2}“ –f $var
        }
    ELSE{
        $var =„{0:C2}“ –f 4
        }

    #choice the state
    IF ($var -ge $warn){
        $choice = 1
        }
    IF ($var -ge $crit){
        $choice = 2
        }
    ELSE{
        $choice = 0
        }
    }
ELSE{
    $choice = 3
    $crashed = $objoutput.value
    }



SWITCH ($choice){
    0 {"0 $servicename count=$var;$warn;$crit;;  OK - $var neue Fälle in den letzten 7 Tage pro 100.000 Einwohner im $lankreis in $bundesland.\\nWenn der Schwellwert $crit übersteigt, gibt es neue Restriktionen vom Bundesland $bundesland."}            
    1 {"1 $servicename count=$var;$warn;$crit;;  WARN - $var neue Fälle in den letzten 7 Tage pro 100.000 Einwohner im $lankreis in $bundesland.\\nWenn der Schwellwert $crit übersteigt, gibt es neue Restriktionen vom Bundesland $bundesland."}            
    2 {"2 $servicename count=$var;$warn;$crit;;  CRIT - $var neue Fälle in den letzten 7 Tage pro 100.000 Einwohner im $lankreis in $bundesland.\\nEs wird neue Restriktionen geben."}
    3 {"3 $servicename count=$var;$warn;$crit;;  UNKNOWN - API hat Probleme.\\n$crashed"}      
}