#!/bin/bash
# Copyright (C) 2010, 2011 Otavio Salvador <otavio@ossystems.com.br>
# This file is licensed on GPLv3

CROSSBUILD_BLACKLIST="s390-netdevice partitioner"

source=`grep Source debian/control | sed 's,.*: ,,g'`

# Set the architecture to use for the build
pkg_arch=`grep Architecture debian/control | head -n 1 | sed 's,.*: ,,g'`
sys_arch=`dpkg-architecture -qDEB_BUILD_ARCH`
if echo "$pkg_arch" | grep -q "$sys_arch"; then
	pkg_arch="$sys_arch"
else
	pkg_arch=`echo $pkg_arch | cut -f 1 -d\  | sed "s,-any$,-$sys_arch,g"`
	if [ "$pkg_arch" = "any" ] || [ "$pkg_arch" = "all" ] || [ "$pkg_arch" = "linux-$sys_arch" ]; then
		pkg_arch="$sys_arch"
	fi

	if [ "$pkg_arch" != "$sys_arch" ] &&
		echo "$CROSSBUILD_BLACKLIST" | grep -q "$source"; then
		echo "ERROR: '$source' package is unsafe for crossbuilding."
		exit 1
	fi
fi

# Check build-depends
if ! dpkg-checkbuilddeps; then
	exit 1
fi

# Handle translations
l10n_changes="$(mktemp --tmpdir l10n-changes.XXXXXX)"
cleanup () {
	rm -f "$l10n_changes"
}
trap cleanup EXIT HUP INT QUIT TERM

`dirname $0`/l10n/output-l10n-changes -d . 2> /dev/null > "$l10n_changes"
if [ "`cat "$l10n_changes"`" = "Cannot find the PO directory!" ]; then
	> "$l10n_changes"
fi

while read line; do
	if [ "$line" = "[ Updated translations ]" ]; then
		continue
	fi

	log=`echo "$line" | cut -c 3-`

	DEBFULLNAME="Updated translations" dch -t --release-heuristic changelog "$log"
done < "$l10n_changes"

# "release" the version
dch -r ""

# build, check and upload
version="$(dpkg-parsechangelog | awk '/^Version:/ { print $2 }')"
debuild -a$pkg_arch -I
if [ "$?" = "0" ]; then
	if grep -q "E: .* udeb: binary-from-other-architecture .*" "../${source}_${version#*:}_${pkg_arch}.build"; then
		echo "ERROR: this package is unsafe for crossbuilding."
	else
		read -n 1 -s -p "Are you sure you want to commit, upload and push the package [yN]? " reply
		echo
		if [ "$reply" = y ] || [ "$reply" = Y ]; then
			if debsign -a$pkg_arch; then
				git add debian/changelog
				if debcommit --release; then
					if git push origin && git push origin $version; then
						if debrelease -a$pkg_arch; then
							exit 0
						else
							echo "Failed to upload the package."
							exit 1
						fi
					else
						echo "Failed to push changes to origin. Package won't be uploaded. Exiting..."
						exit 1
					fi
				else
					echo "Failed to run debcommit --release, exiting..."
					exit 1
				fi
			else
				echo "Failed to sign the package, exiting..."
				exit 1
			fi
		else
			echo "Nothing has been committed or pushed. Package built fine though."
			exit 0
		fi
	fi
fi

git checkout debian/changelog
exit 1