# This adds a special type of git repository, where the .git directory
# is stored on a file server, to avoid wasting space with it on the client.
# One example use is storing a music collection in git, where you can spare
# the extra space needed for .git on your file server, but not on your
# laptop. This fills basically the same niche as unison.
# 
# To make mr use this file, add a line like this inside the [DEFAULT]
# section of your ~/.mrconfig
#include = cat /usr/share/mr/gitless
#
# And an example repo using it would look something like:
#[lib/sound]
#checkout = gitless_checkout turtle /media/turtle/home/joey/lib sound
# 
# In this example, the file server's hostname is "turtle", 
# and it's mounted on /media/turtle. The file server contains a sound.git
# repository in the specified directory under that mount point.
# When mr checks out that repository, it will create a sound.hostname
# directory on the server, containing just the .git directory, and symlink
# the client's .git directory to it. After checkout, normal git and mr
# commands can be used, as long as the file server is available.

lib =
	gitless_checkout() {
		server="$1"
		remotebase="$2"
		dir="$3"
		hostname="$(hostname)"
		if [ "$hostname" = "$server" ]; then
			git clone "$dir.git" "$dir" 
			cd "$dir"
		else
			if [ ! -d "$remotebase/$dir.$hostname" ]; then
				git clone --shared --no-checkout "$remotebase/$dir.git" "$remotebase/$dir.$hostname"
			fi
			mkdir -p "$dir"
			cd "$dir"
			ln -sf "$remotebase/$dir.$hostname/.git"
			git reset --hard
		fi
		
		# disable auto gc, because it breaks repo hard links,
		# and is not smart to run over a networked filesystem
		git config gc.auto 0
	}