#! /bin/bash

set -eu

function check_clean() {
    if ! git diff-index --quiet HEAD -- ; then
        echo "Git repository is dirty, aborting."
        git status --short --untracked-files=no
        exit 1
    fi
}

function dry_run() {
    rsync -HPrlm \
        --itemize-changes \
        --dry-run \
        --files-from=./tracked-files \
        --exclude-from=./.gitignore \
        "${source}" "${destination}"
}


source=${HOME}
repo_root=$(git rev-parse --show-toplevel)
destination="${1:-$repo_root}"

echo "Importing working dotfiles to $destination"
dry_run

if [ -z "${1+x}" ]; then
    echo "Performing git repository check..."
    check_clean
fi

if [ -z "${2+x}" ]; then
    read -r -p "Are you sure? [y/N] " response
    response=${response,,}
else
    response=$2
fi

if [[ "$response" =~ ^(yes|y)$ ]]; then
    rsync -HPrlm \
        --itemize-changes \
        --files-from=./tracked-files \
        --exclude-from=./.gitignore \
        "${source}" "${destination}"
fi