#!/usr/bin/env bash
set -e

cd "$(dirname "$BASH_SOURCE")/.."

# Downloads dependencies into vendor/ directory
mkdir -p vendor
cd vendor

clone() {
	vcs=$1
	pkg=$2
	rev=$3
	
	pkg_url=https://$pkg
	target_dir=src/$pkg
	
	echo -n "$pkg @ $rev: "
	
	if [ -d $target_dir ]; then
		echo -n 'rm old, '
		rm -fr $target_dir
	fi
	
	echo -n 'clone, '
	case $vcs in
		git)
			git clone --quiet --no-checkout $pkg_url $target_dir
			( cd $target_dir && git reset --quiet --hard $rev )
			;;
		hg)
			hg clone --quiet --updaterev $rev $pkg_url $target_dir
			;;
	esac
	
	echo -n 'rm VCS, '
	( cd $target_dir && rm -rf .{git,hg} )
	
	echo done
}

clone git github.com/kr/pty 05017fcccf

clone git github.com/gorilla/context 14f550f51a

clone git github.com/gorilla/mux 136d54f81f

clone git github.com/tchap/go-patricia v1.0.1

clone hg code.google.com/p/go.net 84a4013f96e0

clone hg code.google.com/p/gosqlite 74691fb6f837

clone git github.com/docker/libtrust 230dfd18c232

clone git github.com/Sirupsen/logrus v0.7.1

clone git github.com/go-fsnotify/fsnotify v1.0.4

# get Go tip's archive/tar, for xattr support and improved performance
# TODO after Go 1.4 drops, bump our minimum supported version and drop this vendored dep
if [ "$1" = '--go' ]; then
	# Go takes forever and a half to clone, so we only redownload it when explicitly requested via the "--go" flag to this script.
	clone hg code.google.com/p/go 1b17b3426e3c
	mv src/code.google.com/p/go/src/pkg/archive/tar tmp-tar
	rm -rf src/code.google.com/p/go
	mkdir -p src/code.google.com/p/go/src/pkg/archive
	mv tmp-tar src/code.google.com/p/go/src/pkg/archive/tar
fi

# get digest package from distribution
clone git github.com/docker/distribution d957768537c5af40e4f4cd96871f7b2bde9e2923
mv src/github.com/docker/distribution/digest tmp-digest
rm -rf src/github.com/docker/distribution
mkdir -p src/github.com/docker/distribution
mv tmp-digest src/github.com/docker/distribution/digest

clone git github.com/docker/libcontainer 4a72e540feb67091156b907c4700e580a99f5a9d
# see src/github.com/docker/libcontainer/update-vendor.sh which is the "source of truth" for libcontainer deps (just like this file)
rm -rf src/github.com/docker/libcontainer/vendor
eval "$(grep '^clone ' src/github.com/docker/libcontainer/update-vendor.sh | grep -v 'github.com/codegangsta/cli' | grep -v 'github.com/Sirupsen/logrus')"
# we exclude "github.com/codegangsta/cli" here because it's only needed for "nsinit", which Docker doesn't include