#!/bin/bash

ext=$1
git='/home/felipec/dev/git'

if [ $ext == 'hg' ]; then
	versions=(1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6)
	tests=test-{hg,hg-bidi,hg-hg-git}.t
	ext_dir='/home/felipec/tmp/hg'
else
	versions=(bzr-2.6b1 bzr-2.5.0 bzr-2.4.0 bzr-2.3.0 bzr-2.2.0 bzr-2.1.4 bzr-2.0.6)
	tests=test-bzr.t
	ext_dir='/home/felipec/tmp/bzr'
fi

use_lib() {
	export PYTHONPATH=$1
	export PATH=$1:$PATH
}

# prepare checkouts
for version in "${versions[@]}"
do
	dir=/tmp/$ext/$version &&
	test -d $dir && continue

	echo "preparing $version checkout" &&
	(
		git clone -n -q --shared $ext_dir $dir &&
		cd $dir &&
		git checkout -q $version &&
		test $ext == 'hg' &&
			printf 'version = "%s"\n' $version > mercurial/__version__.py &&
		# make local >& /dev/null
		python setup.py build_py -c -d . build_ext -i build_scripts >& /dev/null
	)
done

check_commit() {
	local ok=1 version dir tmpdir

	rm -f /tmp/error

	for version in "${versions[@]}"
	do
		(
			use_lib /tmp/$ext/$version &&
			dir=$PWD/contrib/remote-helpers &&
			tmpdir=$(mktemp -d) &&
			export TEST_OUTPUT_DIRECTORY=$tmpdir &&
			export TEST_DIRECTORY=$PWD/t &&
			export PATH=$PWD:$PATH &&
			cd t &&
			eval prove -v $dir/$tests > $dir/output || ok=0
			rm -rf $tmpdir
			let ok && echo "$version: ok" || echo "$version: not ok"
			let ok || { cat $dir/output && touch /tmp/error ; }
		) &
	done
	wait
	test -f /tmp/error && return 1 || return 0
}

check_revlist() {
	git rev-list --reverse $1 | while read commit
	do
		git checkout -q $commit &&
		git log -1 --oneline &&
		check_commit || return 1
	done
}

ret=1 &&
cd $git &&

make -C contrib/remote-helpers links &&

shift
if test -z $1
then
	check_commit && ret=0
else
	old=$(sed -e 's/^ref: refs.heads.//' .git/HEAD) &&
	check_revlist $1 && ret=0
	git checkout -q $old
fi

exit $ret