#!/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)

	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 "PKGNAME, e.g. by using PKGNAMESUFFIX.  Note that NO_LATEST_LINK is"
  echo "deprecated.  See the portmgr blog post for more information:"
  echo "http://blogs.freebsdish.org/portmgr/2013/10/03/package-name-collisions/"
  echo
  echo
  echo "Thanks,"
  echo "Erwin \"Annoying Reminder Guy III\" Lansing"
  echo
  echo

  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
  # Copy to erwin@
  mail -s "Ports with duplicate LATEST_LINKs" erwin@FreeBSD.org < .latest_mail
else
  cat .latest_mail
fi

rm .latest_dups .latest_full .latest_link .latest_mail