# An example of how to add a new revision control system type to mr.
# git fake bare repositories have a detached workspace. This file adds
# support for them, separate from the normal git support.

# To make mr use this file, add a line like this inside the [DEFAULT]
# section of your ~/.mrconfig
#include = cat /path/to/mrconfig.git-fake-bare

git_fake_bare_test = 
	test -d "$MR_REPO"/refs/heads && test -d "$MR_REPO"/refs/tags &&
	test -d "$MR_REPO"/objects && test -f "$MR_REPO"/config &&
	test "$(GIT_CONFIG="$MR_REPO"/config git-config --get core.bare)" = false

git_fake_bare_update =
	# all this is because of a bug in git-fetch, which requires GIT_DIR set
	local git_dir_override; git_dir_override=.git
	case "$(get_git_repo_type "$MR_REPO")" in
		fake-bare) git_dir_override="$MR_REPO";;
	esac
	args="$@"
	[ -z "$args" ] && args="-t origin master"
	eval GIT_DIR="$git_dir_override" git pull "$args"

git_fake_bare_status = git status "$@" || true

git_fake_bare_commit = error "commit does not work for fake bare git repositories (yet)."

git_fake_bare_diff = error "diff does not work for fake bare git repositories (yet)."

git_fake_bare_log = git log "$@"

git_fake_bare_register = 
	url="$(LANG=C GIT_CONFIG=config git-config --get remote.origin.url)" || true
	if [ -z "$url" ]; then
		error "cannot determine git url"
	fi
	worktree="$(git-config --get core.worktree)" || true
	if [ -z "$worktree" ]; then
		error "git worktree is not set"
	fi
	worktree="${worktree%%/}/"
	if [ ! -d "$worktree" ]; then
		error "git worktree $worktree does not exist"
	fi
	mr -c "$MR_CONFIG" config "`pwd`" \
		lib="GIT_WORK_TREE=$work_tree; export GIT_WORK_TREE"
	echo "Registering git url: $url in $MR_CONFIG (with worktree $worktree)"
	mr -c "$MR_CONFIG" config "`pwd`" \
	checkout=" \
	git clone --no-checkout $url $MR_REPO && \
	cd $MR_REPO && \
	git read-tree HEAD && \
	git checkout-index -a --prefix='$work_tree' || true; \
	git config core.worktree '$worktree' && \
	mv .git/* . && \
	rmdir .git"