#!/bin/bash

GIT_SERVER=${GIT_SERVER:-"git.tobyvin.dev"}

SCRIPT="$(basename "$0")"

long='help,init::,force'
short='hi::f'

if ! opts="$(getopt -o $short -l $long -n "$SCRIPT" -- "$@")"; then
	exit 1
fi

eval set -- "$opts"

help() {
	cat <<-EOF
		$(ssh "git@$GIT_SERVER" -- export --help)

		OPTIONS ($SCRIPT)
		    -i, --init [<NAME>] Set $GIT_SERVER as the remote for the local repo and
		                        initialize the bare repository, <NAME>, on the
		                        remote.

		                        If <NAME> is ommited, it will default to
		                        using the basename of the repository.

		                        This will fail if origin is already set, unless '-f'
		                        or '--force' is passed.

		    -f, --force         When setting the remote via the '-i' or '--init'
		                        option, overwrite the existing origin.

		NOTE
		    This was run via the local git-export helper script. The current
		    <GIT_DIR> is used in place of <REPO> argument.

	EOF
}

if ! name="$(git rev-parse --show-toplevel | xargs basename)"; then
	exit 1
fi

init=false
force=false
for arg; do
	case "$arg" in
	-h | --help)
		help
		exit 0
		;;
	-i | --init)
		init=true
		name=${2:-$name}
		;;
	-f | --force)
		force=true
		;;
	esac
done

origin=$(git remote get-url origin)

if ! repo=$(printf '%s' "$origin" | grep -Po "$GIT_SERVER:\K.*") || [ -z "$repo" ]; then
	if ! $init; then
		printf 'Remote origin is not set to %s\n' "$GIT_SERVER" 1>&2
		exit 1
	fi

	if [ -n "$origin" ]; then
		if ! $force; then
			printf "Remote origin is already set. Use '-f' or '--force' to overwrite it\n" 1>&2
			exit 1
		fi

		git remote rm origin
	fi

	git remote add origin git@"$GIT_SERVER":
	ssh "git@$GIT_SERVER" -- init "$name"
	repo="$name"
fi

# shellcheck disable=SC2046
ssh "git@$GIT_SERVER" -- export "$repo" $([ $# -gt 0 ] && printf '"%q" ' "$@")