#!/bin/sh

set -eu

#DEBUG=1

[ "$USER" = "aptuser" ] || SUDO="sudo -u aptuser"
export REPREPRO_BASE_DIR="/srv/apt/repo"
REPREPRO="flock $REPREPRO_BASE_DIR/db/.lock /usr/bin/reprepro -b $REPREPRO_BASE_DIR --morguedir $REPREPRO_BASE_DIR/morgue --verbose"
DISTS="all"

if [ "${DEBUG:-}" ]; then
	SUDO="echo"
fi

while getopts "d:" opt ; do
	case $opt in
		d) DISTS="$OPTARG" ;;
		*) exit 5 ;;
	esac
done
# shift away args
shift $(($OPTIND - 1))

PKG="$1"
[ "$DISTS" = "all" ] && DISTS="sid jessie wheezy squeeze wily trusty precise"

NEWVERSION=$($REPREPRO -A source list sid-pgdg-testing "$PKG" | awk '{ print $3 }')
if [ -z "$NEWVERSION" ]; then
	echo "ERROR: $PKG does not seem to be a source package"
	exit 1
fi
INITIAL=$(echo $PKG | egrep -o '^(lib)?.')
test -d /srv/apt/repo/pool/main/$INITIAL/$PKG/
BINARIES=$(ls /srv/apt/repo/pool/main/$INITIAL/$PKG/*deb | sed -e 's!.*/!!' -e 's/_.*//' | sort -u)
OTHERBINARIES=$(echo "$BINARIES" | while read b; do if [ "$b" != "$PKG" ]; then echo "$b"; fi; done)

OLDVERSION=$($REPREPRO -A source list sid-pgdg "$PKG" | awk '{ print $3 }')
echo "Old status:"
OLDLS=$($REPREPRO ls $PKG; for p in $OTHERBINARIES; do $REPREPRO ls $p; done)
echo "$OLDLS"
OLDLSPROD=$(echo "$OLDLS" | grep -v pgdg-testing | column -t)
echo

for DIST in $DISTS ; do
	${SUDO:-} $REPREPRO copysrc $DIST-pgdg $DIST-pgdg-testing $PKG
done

echo
echo "New status:"
NEWLS=$($REPREPRO ls $PKG; for p in $OTHERBINARIES; do $REPREPRO ls $p; done)
echo "$NEWLS"
NEWLSPROD=$(echo "$NEWLS" | grep -v pgdg-testing | column -t)
echo

if [ -z "${DEBUG:-}" ] && [ "$OLDLSPROD" = "$NEWLSPROD" ]; then
	echo "No change in the repository, not sending mail"
	exit
fi

NEWSHORTVERSION=$(echo "$NEWVERSION" | sed -e 's/.*://')
FROM="apt.postgresql.org repository <myon@debian.org>"
TO="PostgreSQL in Debian <pgsql-pkg-debian@postgresql.org>"

if [ "$OLDVERSION" ]; then
	SOMEDEB=$(ls /srv/apt/repo/pool/main/$INITIAL/$PKG/*$NEWSHORTVERSION*deb | head -1)
	CHANGES=$(apt-listchanges -f text --which=changelogs --since=$OLDVERSION $SOMEDEB)
	CHANGESTEXT="Old version $OLDVERSION:

$OLDLSPROD

Changelog:

$CHANGES"
else
	CHANGESTEXT="This is the first version of this package in the repository."
fi

echo "Sending mail to $TO ..."

TEXT="From: $FROM
To: $TO
Subject: $PKG updated to version $NEWVERSION

The package $PKG was updated on apt.postgresql.org:

New version $NEWVERSION:

$NEWLSPROD

$CHANGESTEXT

The public mirrors serving apt.postgresql.org are synced hourly,
the updated packages will be available there shortly.
"
echo "$TEXT"
[ -z "${DEBUG:-}" ] && echo "$TEXT" | /usr/sbin/sendmail -t

exit 0