#!/bin/sh
# xpkgdiff [-r] [-R URL] [-a ARCH] [-f|-x [-t]|-S|-c FILE|-p PROP[,...]] PKG - compare PKG between remote to local repositories

usage() {
	echo "Usage: xpkgdiff [-r] [-R URL] [-a ARCH] [-f|-x [-t]|-S|-c FILE|-p PROP[,...]] PKG"
	exit 1
}

cleanup() {
	rm -rf $TMPDIR
	exit 0
}

: ${DIFF:="diff -u --color"}
: ${ARCH:=$XBPS_TARGET_ARCH}

# by default, don't sort
SORT='cat'

while getopts Sc:fhp:rtxa:R: flag; do
	case $flag in
		S) QUERY='--show' ;;
		c) QUERY="--cat=$OPTARG" ;;
		f) QUERY='--files'; SORT='sort' ;;
		p) QUERY="--property $OPTARG" ;;
		r) REVERSE=1 ;;
		t) FULLTREE=1 ;;
		x) QUERY='--deps'; SORT='sort' ;;
		a) ARCH="$OPTARG" ;;
		R) REMOTE_BASEURL="$OPTARG" ;;
		h|?) usage ;;
	esac
done

shift $(($OPTIND - 1))

[ "$#" -eq 0 ] && usage
[ -z "$QUERY" ] && usage

if [ -z "$ARCH" ]; then
	# if arch is not set, just add the value of -R to the list
	REMOTE_REPOS=" --repository=$REMOTE_BASEURL "
else
	[ "$ARCH" != "$XBPS_TARGET_ARCH" ] && export XBPS_TARGET_ARCH="$ARCH"
	: ${REMOTE_BASEURL:="https://repo-default.voidlinux.org/current"}
	case "$ARCH" in
		aarch64*)
			REMOTE_BASEURL=${REMOTE_BASEURL%/}/aarch64;;
		*-musl)
			REMOTE_BASEURL=${REMOTE_BASEURL%/}/musl;;
		*)
			REMOTE_BASEURL=${REMOTE_BASEURL%/};;
	esac

	# if arch is set, add all the standard repos for that arch, and ignore conf repos
	REMOTE_REPOS="
		-i
		--repository=$REMOTE_BASEURL/bootstrap
		--repository=$REMOTE_BASEURL
		--repository=$REMOTE_BASEURL/nonfree
		--repository=$REMOTE_BASEURL/multilib
		--repository=$REMOTE_BASEURL/multilib/nonfree
		--repository=$REMOTE_BASEURL/debug
	"
fi

TMPDIR=$(mktemp --tmpdir -d "xpkgdiff.XXXXX")

trap cleanup EXIT INT TERM

if [ "$QUERY" = '--deps' ] && [ -n "$FULLTREE" ]; then
	QUERY='--fulldeptree --deps'
fi

BRANCH=$(git symbolic-ref -q --short HEAD 2>/dev/null)
if [ -n "$XBPS_HOSTDIR" ]; then
	XBPS_BINPKGS="$XBPS_HOSTDIR/binpkgs"
else
	XBPS_DISTDIR="$(xdistdir 2>/dev/null)" || XBPS_DISTDIR=.
	XBPS_BINPKGS="$XBPS_DISTDIR/hostdir/binpkgs"
fi
REPO="
	--repository=$XBPS_BINPKGS/$BRANCH/bootstrap
	--repository=$XBPS_BINPKGS/$BRANCH
	--repository=$XBPS_BINPKGS/$BRANCH/nonfree
	--repository=$XBPS_BINPKGS/$BRANCH/multilib
	--repository=$XBPS_BINPKGS/$BRANCH/multilib/nonfree
	--repository=$XBPS_BINPKGS/$BRANCH/debug
	--repository=$XBPS_BINPKGS/bootstrap
	--repository=$XBPS_BINPKGS
	--repository=$XBPS_BINPKGS/nonfree
	--repository=$XBPS_BINPKGS/multilib
	--repository=$XBPS_BINPKGS/multilib/nonfree
	--repository=$XBPS_BINPKGS/debug
"

pkg="$1"

if xbps-query -MR $REMOTE_REPOS $pkg >/dev/null; then
	xbps-query -MR $REMOTE_REPOS $QUERY $pkg | $SORT > "$TMPDIR/${pkg}.repo"
else
	echo "Package '$pkg' not found in repositories" > "$TMPDIR/${pkg}.repo"
fi
# ignore-conf-repos here and not in the actual query
# because --fulldeptree will probably fail without
# being able to read from other repos
if xbps-query --ignore-conf-repos $REPO $pkg >/dev/null; then
	xbps-query $REPO $QUERY $pkg | $SORT > "$TMPDIR/${pkg}.local"
else
	echo "Package '$pkg' not found in local repositories" > "$TMPDIR/${pkg}.local"
fi

if [ -z "$REVERSE" ]; then
	FILE1="${pkg}.repo"
	FILE2="${pkg}.local"
else
	FILE1="${pkg}.local"
	FILE2="${pkg}.repo"
fi

$DIFF $TMPDIR/$FILE1 $TMPDIR/$FILE2