#!/usr/bin/env fish

argparse 'u/users=+' 'r/repos=+' -- $argv
or exit 1;

# setup git user
adduser git -D --shell "/usr/bin/git-shell"

# create users and copy keys in correct location, set permissions
for user in (string split ',' $_flag_u)
	echo "Setting up user: $user"
	if [ "$user" = git ]
		echo "Denied because user git is reserved"
		continue
	end

	set -l HOME "/home/$user"
	# user is not restricted, this is done in ssh config with forceCommand
	# we need to be able to run a fish script to check for permissions
	adduser --home $HOME -D "$user"
	passwd -u "$user"
	mkdir "$HOME/.ssh"
	cp "/var/keys/$user/authorized_keys" "$HOME/.ssh/"
	chown -R $user "$HOME"
	chmod -R 700 "$HOME"
end

for repoConfig in (string split ',' $_flag_r)
	set -l parsedConfig (string split ':' $repoConfig)
	set -l repo $parsedConfig[1]

	# we assume all repos to be in /srv/repos
	set -l repoDir "/srv/repos/$repo.git"
	echo "Setting up repo: $repo"

	# write user as allowed into permission file
	for user in $parsedConfig[2..]
		echo "$repo:$user" >> /srv/repos/permissions
	end

	# setup repo dir
	if not test -d $repoDir
		mkdir -p $repoDir
		git init --bare $repoDir -b trunk
	end
	chown -R git:git "$repoDir"
	chmod -R 700 "$repoDir"
end

echo "Setting up server"
# generate host keys in case
mkdir -p /var/keys/etc/ssh/ && ssh-keygen -A -f /var/keys
# run ssh daemon
/usr/sbin/sshd -D -e