db delay script

diff --git a/bash/db-delay-notify.sh b/bash/db-delay-notify.sh
new file mode 100755 (executable)
index 0000000..39bd50b
--- /dev/null
+++ b/bash/db-delay-notify.sh
@@ -0,0 +1,106 @@
+#!/bin/bash
+set -euo pipefail
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the COMMON DEVELOPMENT AND DISTRIBUTION LICENSE
+#
+# You should have received a copy of the
+# COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Version 1.0
+# along with this program.  If not, see http://www.sun.com/cddl/cddl.html
+#
+# 2023 http://www.bananas-playground.net
+
+# More information and resources can be found here
+# 
+
+# station eva#
+STATIONID=""
+# destination eva# Show only for destination
+# train changes are not accounted for. It only shows train which 
+# start at STATIONID and end at DESTINATIONID
+DESITNATIONID=""
+# can be dep (departure) or arr (arrival)
+BOARDTYPE="dep"
+# show only delays
+# the delay limit is 5min.
+DELAY="false"
+# which type of transport will be shown
+FILTER="11111"
+# print some debug info
+DEBUG="false"
+
+USAGE="Usage: db-delay.sh STATIONID BOARDTYPE[dep|arr] DELAY[true|false] [DESITNATIONID]"
+
+if [[ $# -ge 1 ]] && [[ -n "$1" ]]; then
+       STATIONID=$1;
+else
+       echo "Missing argument STATIONID"
+       echo "${USAGE}"
+       exit 1
+fi
+
+if [[ $# -ge 2 ]] && [[ -n "$2" ]]; then
+       BOARDTYPE=$2;
+else
+       echo "Missing argument BOARDTYPE"
+       echo "${USAGE}"
+       exit 1
+fi
+
+if [[ $# -ge 3 ]] && [[ -n "$3" ]]; then
+       DELAY=$3;
+else
+       echo "Missing argument DELAY"
+       echo "${USAGE}"
+       exit 1
+fi
+
+if [[ $# -ge 4 ]] && [[ -n "$4" ]]; then
+       DESITNATIONID=$4;
+fi
+
+
+# the endpoint
+DBURL="https://reiseauskunft.bahn.de/bin/bhftafel.exe/dn?L=vs_java&start=yes&boardType=${BOARDTYPE}&input=${STATIONID}&productsFilter=${FILTER}&time=actual"
+
+if [[ "$DELAY" == "true" ]] ; then
+       DBURL+="&delayedJourney=on";
+fi
+
+if [[ ! -z "$DESITNATIONID" ]] ; then
+       DBURL+="&dirInput=${DESITNATIONID}";
+fi
+
+# Return value not really clear yet.
+# If nothing is found, just the station text is returned.
+# If there is no delay (if delay=true) an error is returned. Why?
+# A succesful minimal result is 4 lines
+# Nothing is one line
+# No delays two lines with error in the second
+CALLRESULT=`curl -s "${DBURL}"`
+LINES=`wc -l <<< "${CALLRESULT}"`
+
+
+NOTIFYTEXT="Something wrong"
+if [[ "$DELAY" = true ]] && [[ $LINES > 3 ]]; then
+       NOTIFYTEXT="Delays\n${CALLRESULT}"
+elif [[ "$DELAY" = true ]] && [[ $CALLRESULT == *"error"* ]]; then
+       NOTIFYTEXT=`echo "${CALLRESULT}" | head -1`
+       NOTIFYTEXT+="\nNo delays yet"
+else 
+       NOTIFYTEXT=${CALLRESULT}
+fi
+
+if [[ "${DEBUG}" == "true" ]] ; then
+       echo "${DBURL}"
+       echo "${CALLRESULT}"
+       echo "${LINES}"
+       echo -e "${NOTIFYTEXT}"
+fi
+
+
+BOTTOKEN="xxxxxxxxxxxxxxxx"
+CHAT_ID="xxxxxxxxxxx"
+TELURL="https://api.telegram.org/bot$BOTTOKEN/sendMessage"
+
+curl -s -X POST -H 'Content-Type: application/json' -d '{"chat_id": "'${CHAT_ID}'", "text": "'"${NOTIFYTEXT}"'", "disable_notification": false}' ${TELURL} > /dev/null 2>&1