#!/bin/sh
#
# Iterate over the ports collection, assemble the list of LATEST_LINKs and
# then look for duplicates.  Send a nag-mail to the responsible maintainers.

# Sanitize environment
export __MAKE_CONF=/dev/null
export PORT_DBDIR=/nonexistent
export PKG_DBDIR=/nonexistent
export LOCALBASE=/nonexistent

if [ -z "${PORTSDIR}" ]; then
	PORTSDIR=/usr/ports
fi

if [ "$1" = "-nomail" ]; then
	NOMAIL=1
else
	NOMAIL=0
fi

cd ${PORTSDIR}
CATEGORIES=$(make -V SUBDIR)

for cat in ${CATEGORIES}; do
	cd ${PORTSDIR}/${cat}
	dirs=$(make -V SUBDIR)
	echo "==> ${cat}" 1>&2

	make "PORTSDIR=${PORTSDIR}" "CATEGORY=${cat}" "DIRS=${dirs}" -k -j3 -f - << "EOF"
all:	${DIRS:S/$/.portinfo/}

.for d in ${DIRS}
${d}.portinfo:
	@cd ${PORTSDIR}/${CATEGORY}/${d}; make 'portinfo=$${NO_LATEST_LINK}| $${MAINTAINER} $${.CURDIR:S,${PORTSDIR}/,,} $${LATEST_LINK}' -V portinfo
.endfor
EOF
done | grep '^|' > ${PORTSDIR}/.latest_link

cd ${PORTSDIR}
(awk '{print " " $4 "$"}' < .latest_link) | sort | uniq -d > .latest_dups

grep -f .latest_dups .latest_link | sort -i -k4 > .latest_full

maint=$(awk '{print $2}' < .latest_full | sort -ui | tr '\n' ',')

(echo "Dear port maintainers,"
  echo
  echo "The following list includes ports maintained by you that have duplicate"
  echo "LATEST_LINK values.  They should either be modified to use a unique"
  echo "LATEST_LINK or suppressed using NO_LATEST_LINK, to avoid overwriting"
  echo "each other in the packages/Latest directory.  If your ports conflict with"
  echo "ports maintained by another person, please coordinate your efforts with"
  echo "them."
  echo
  echo
  echo "Thanks,"
  echo "Kris \"Annoying Reminder Guy II\" Kennaway"

  printf "%-20s %-30s %-20s\n"  "LATEST_LINK" "PORTNAME" "MAINTAINER"
  echo "=========================================================================="
  while read dummy i j k; do
    printf "%-20s %-30s %-20s\n" $k $j $i
  done < .latest_full

  num=$(wc -l .latest_full | awk '{print $1}')
  echo
  echo "Total: $num ports") > .latest_mail

if [ "${NOMAIL}" = "0" ]; then
  for i in ${maint}; do
    mail -s "Ports with duplicate LATEST_LINKS" $i < .latest_mail
  done
else
  cat .latest_mail
fi

rm .latest_dups .latest_full .latest_link .latest_mail