#! /opt/bin/dash

courselist=".ECE.202220.list"

if false
then

LDS='ldapsearch -x -h ldap.villanova.edu -b o=villanova.edu -s sub'

while read dept num
do
  cat "$dept-$num/classInstructor.list" "$dept-$num/labInstructor.list"
done < "$courselist" |
 tr ',' '\n' |
 sed -e 's/^  *//' -e 's/  *$//' |
 sort -u > .instructors-names.list

# needs some work
# fix: get uids from /home/httpd/news/perry/ECE/faculty/faculty.list
awk '{ print $NF, $0 }' .instructors-names.list | while read sn rest
do
 $LDS "(sn=$sn)" | egrep '^(uid|cn):'
 echo " $rest"
done > .instructors.list

else

while read dept num
do
  course="$dept-$num"
  authlist=""
  while read uid rest
  do
    x=$(grep "$rest" "$course/classInstructor.list" "$course/labInstructor.list")
    if [ -n "$x" ]; then authlist="$uid\n$authlist"; fi # ZZ \n
  done < .instructors.list
  if [ -n "$authlist" ]; then
    echo -n "$authlist" > "$course/auth.list"
    echo $course $(cat $course/auth.list)
  fi
done < "$courselist"

fi