feat: Sends an email if new grades are available

noten.sh

@@ -10,11 +10,11 @@ FU="https://www3.primuss.de/cgi-bin/pg_Notenbekanntgabe/showajax.pl"
 
 USERNAME=phg0107
 PASSWORD=lelelele
+TMPPATH=$(mktemp -d)
+FINALFILE=/some/path/to/result.txt
 
-COOKIES=.cookies
-HEADERS=.headers
-rm $COOKIES
-rm $HEADERS
+COOKIES=$TMPPATH/.cookies
+HEADERS=$TMPPATH/.headers
 
 curl -s -L -c $COOKIES -D $HEADERS "$DEST" > /dev/null
 LOGIN=$(cat $HEADERS | rg -o -e "Location: (.*)" -r '$1' | tail -1 | sed 's/\;.*?/?/')
@@ -30,5 +30,11 @@ SAMLRESP=$(echo ${VALS[1]} | sed 's/=/%3D/g' | sed 's/+/%2B/g')
 SESSION=$(curl -L -s -b $COOKIES -c $COOKIES -d "RelayState=$RELAYSTATE&SAMLResponse=$SAMLRESP" $SHIBBLE | rg -o -e 'name="Session" value="(.*)"' -r '$1' | head -1)
 AJAXDATA=$(curl -s -b $COOKIES -c $COOKIES -d "User=$USERNAME&Session=$SESSION&Language=de&FH=fhin&Portal=1" $NOTEN | rg -o -e 'data: *"(.*)"' -r '$1' | head -1)
 # Finally...
-curl -s -b $COOKIES -c $COOKIES -d $AJAXDATA $FU | awk 'f{ if (/<\/tbody>/){printf "%s", buf; f=0; buf=""} else buf = buf $0 ORS}; /<tbody>/{f=1}' | rg -o -e '<b>(.*)</b>' -r '$1'
-# Pipe output to file and if require perform futher formatting
+cp $FINALFILE $TMPPATH
+curl -s -b $COOKIES -c $COOKIES -d $AJAXDATA $FU | awk 'f{ if (/<\/tbody>/){printf "%s", buf; f=0; buf=""} else buf = buf $0 ORS}; /<tbody>/{f=1}' | rg -o -e '<b>(.*)</b>' -r '$1' | sudo -u http tee $FINALFILE
+# If there is a change in the file, send an email
+D=$(diff $FINALFILE $TMPPATH/noten.html)
+if [ "$D" != "" ]; then
+    cat $FINALFILE | mail -s "NEUE NOTEN" meine@mail.de
+fi
+rm -rf $TMPPATH