#!/usr/bin/env bash

USAGE="Usage:\n\
        $(basename "$0") <version-number>\n\
	Arguments:\n\
	version-number: Version number to use for the archive.\n\
		There is currently no logic to infer or check this for you, make sure to check the \`releases\` directory to make sure your version is larger than existing versions and does not overwrite them.\n\
	Options:\n\
        	-h: displays help message."

PACKAGE_NAME="freie-fraktur"

# Reads options
while getopts "h" flag
do
        case "$flag" in
                h)
                        echo -e "$USAGE"
                        exit 0
                        ;;
                \?)
                        echo "Invalid option: -$OPTARG" >&2
                        exit 1
                        ;;
                :)
                        echo "Option -$OPTARG requires an argument." >&2
                        exit 1
                        ;;
        esac
done

# shifts pointer to read mandatory version number specification
shift $((OPTIND - 1))
VERSION="${1}"

# checks for correct output file specification
if [ -z "$VERSION" ]
then
        echo "$(basename "$0"): no archive version specified."
        echo -e "$USAGE"
        exit 1
fi

echo "This is ./make_archive.sh working on the \`${PACKAGE_NAME}\` package."
ARCHIVE_NAME="${PACKAGE_NAME}-${VERSION}"
ARCHIVE_DIR="/tmp/${ARCHIVE_NAME}"
SCRIPT_DIR="$(dirname "$0")/"
RELEASE_DIR="${SCRIPT_DIR}../releases/"


echo "Creating temporary archive directory under \`${ARCHIVE_DIR}\`."
mkdir "${ARCHIVE_DIR}"
cp "${SCRIPT_DIR}../README.md" "${ARCHIVE_DIR}"
# `-L` is important here, as the data is recorded in datalad and otherwise only the (relative!) symlinks will be copied.
cp -rL "${SCRIPT_DIR}../doc" "${ARCHIVE_DIR}"
cp -rL "${SCRIPT_DIR}../fonts" "${ARCHIVE_DIR}"
pushd "${ARCHIVE_DIR}" &> /dev/null
        echo "# Font Package Release \`${ARCHIVE_NAME}\`

Note that this is a font package release, and does not include associated scripts or a package-wide license (individual font licences are to be found in the documentation directory).
This message was autogenerated during archive creation.
" | cat - README.md | tee README.md &> /dev/null
popd &> /dev/null
echo "	✔"

echo "Creating release archive \`${ARCHIVE_NAME}.tar.xz\`."
# `-C` is important here, as otherwise the full path would be encoded into the tar archive (i.e. including the `tmp/` prefix)
tar cJf "${RELEASE_DIR}${ARCHIVE_NAME}.tar.xz" -C $(dirname ${ARCHIVE_DIR}) $(basename ${ARCHIVE_DIR})
echo "	✔"

echo "Cleaning up.."
rm -rf "${ARCHIVE_DIR}"
echo "	💛"