#!/bin/bash
# License: Unspecified
#
# This script rebuilds a list of packages in order
# and reports anything that fails
#
# Due to sudo usage, it is recommended to allow makechrootpkg
# to be run with NOPASSWD in your sudoers file
#
# FIXME
# Currently uses $(pwd)/rebuilds as the directory for rebuilding...
# TODO make this work for community too

m4_include(lib/common.sh)

if (( $# < 1 )); then
	printf 'Usage: %s <chrootdir> <packages to rebuild>\n' "$(basename "${BASH_SOURCE[0]}")"
	printf '  example: %s ~/chroot readline bash foo bar baz\n' "$(basename "${BASH_SOURCE[0]}")"
	exit 1
fi

# Source makepkg.conf; fail if it is not found
if [[ -r '/etc/makepkg.conf' ]]; then
	# shellcheck source=makepkg-x86_64.conf
	source '/etc/makepkg.conf'
else
	die '/etc/makepkg.conf not found!'
fi

# Source user-specific makepkg.conf overrides
if [[ -r "${XDG_CONFIG_HOME:-$HOME/.config}/pacman/makepkg.conf" ]]; then
	# shellcheck source=/dev/null
	source "${XDG_CONFIG_HOME:-$HOME/.config}/pacman/makepkg.conf"
elif [[ -r "$HOME/.makepkg.conf" ]]; then
	# shellcheck source=/dev/null
	source "$HOME/.makepkg.conf"
fi

bump_pkgrel() {
	# Get the current pkgrel from SVN and update the working copy with it
	# This prevents us from incrementing out of control :)
	pbuild='.svn/text-base/PKGBUILD.svn-base'
	oldrel=$(grep 'pkgrel=' $pbuild | cut -d= -f2)

	#remove decimals
	rel=${oldrel%%.*}

	newrel=$((rel + 1))

	sed -i "s/pkgrel=$oldrel/pkgrel=$newrel/" PKGBUILD
}

pkg_from_pkgbuild() {
	# we want the sourcing to be done in a subshell so we don't pollute our current namespace
	export CARCH PKGEXT
	# shellcheck source=PKGBUILD.proto
	(source PKGBUILD; echo "$pkgname-$pkgver-$pkgrel-$CARCH$PKGEXT")
}

chrootdir="$1"; shift
pkgs=("$@")

SVNPATH='svn+ssh://repos.archlinux.org/srv/repos/svn-packages/svn'

msg "Work will be done in %s" "$(pwd)/rebuilds"

REBUILD_ROOT="$(pwd)/rebuilds"
mkdir -p "$REBUILD_ROOT"
cd "$REBUILD_ROOT"

/usr/bin/svn co -N $SVNPATH

FAILED=""
for pkg in "${pkgs[@]}"; do
	cd "$REBUILD_ROOT/svn-packages"

	msg2 "Building '%s'" "$pkg"
	/usr/bin/svn update "$pkg"
	if [[ ! -d "$pkg/trunk" ]]; then
		FAILED="$FAILED $pkg"
		warning "%s does not exist in SVN" "$pkg"
		continue
	fi
	cd "$pkg/trunk/"

	bump_pkgrel

	if ! sudo makechrootpkg -u -d -r "$chrootdir" -- --noconfirm; then
		FAILED="$FAILED $pkg"
		error "%s Failed!" "$pkg"
	else
		pkgfile=$(pkg_from_pkgbuild)
		if [[ -e $pkgfile ]]; then
			msg2 "%s Complete" "$pkg"
		else
			FAILED="$FAILED $pkg"
			error "%s Failed, no package built!" "$pkg"
		fi
	fi
done

cd "$REBUILD_ROOT"
if [[ -n $FAILED ]]; then
	msg 'Packages failed:'
	for pkg in $FAILED; do
		msg2 "%s" "$pkg"
	done
fi

msg 'SVN pkgbumps in svn-packages/ - commit when ready'