updateMessage.sh

#!/bin/bash

MSGIDAPPENDIX="appid"
TOKEN="apptoken"
DELTOKEN="clienttoken"
URL="url to gotify"


TITLE=$1
MESSAGE=$2
PRIO=$3
APPENDIX=$4

MSGIDAPPENDIX=$MSGIDAPPENDIX$APPENDIX


touch $MSGIDAPPENDIX.msg.txt
touch $MSGIDAPPENDIX.id.txt

MSG=$(<$MSGIDAPPENDIX.msg.txt)
ID=$(<$MSGIDAPPENDIX.id.txt)

if [ -z "$ID" ]; then
    # if id is not set, simply create message
    CURLMSG=$(curl -s "$URL/message?token=$TOKEN" -F "title=$TITLE" -F "message=$MESSAGE" -F "priority=$PRIO")
    ID=$(echo $CURLMSG | jq -r '.id')
    MSG=$(echo $CURLMSG | jq -r '.message')
    echo $ID > $MSGIDAPPENDIX.id.txt
    echo $MSG > $MSGIDAPPENDIX.msg.txt
    exit
fi


# Delete the old message
curl -s "$URL/message/$ID" -X DELETE -H "X-Gotify-Key: $DELTOKEN" 

NEWMSG="$MSG
$MESSAGE"

CURLMSG=$(curl -s "$URL/message?token=$TOKEN" -F "title=$TITLE" -F "message=$NEWMSG" -F "priority=$PRIO")
ID=$(echo $CURLMSG | jq -r '.id')
echo $ID > $MSGIDAPPENDIX.id.txt
echo $NEWMSG > $MSGIDAPPENDIX.msg.txt