#!/bin/sh -e

usage() {
    cat <<'EOF'
Usage: git bare-clone [-d bare-repo-dir] [-h] <git-repo-url> [workspace]
EOF
}

BARE_REPO_DIR=".bare"
while getopts ":d:h" opt; do
    case "$opt" in
        d) BARE_REPO_DIR="$OPTARG" ;;
        h) usage; exit 0 ;;
        :) echo "Option -$OPTARG requires an argument." >&2; usage; exit 2 ;;
    esac
done

shift $((OPTIND - 1))

if [ -z "$BARE_REPO_DIR" ]; then
    echo "Bare repository directory is not specified." >&2
    usage
    exit 2
fi

GIT_REPO_URL="$1"
WORKSPACE="$2"

if [ -z "$GIT_REPO_URL" ]; then
    echo "Git repository URL is required." >&2
    usage
    exit 2
fi

if [ -z "$WORKSPACE" ]; then
    WORKSPACE="."
fi

if [ ! -d "$WORKSPACE" ]; then
    mkdir -p $WORKSPACE
fi

git clone --bare ${GIT_REPO_URL} $WORKSPACE/$BARE_REPO_DIR && echo "gitdir: $BARE_REPO_DIR" > $WORKSPACE/.git && git config remote.origin.fetch "+refs/heads/*:refs/remotes/origin/*"