#! /usr/bin/env bash
#
# libutf8proc-EastAsianWidth.sh
#
#   Copyright (c) 2020-2024 Akinori Hattori <hattya@gentoo.org>
#
#   SPDX-License-Identifier: MIT
#
#
# usage: libutf8proc-EastAsianWidth.sh [<version>]
# requirements:
#   - curl
#   - gcc
#   - make
#   - ruby
#   - xz-utils
#

set -eo pipefail

TMPDIR="$(mktemp -d)"
trap "rm -rf \"${TMPDIR}\"" EXIT

PN="libutf8proc"
if [[ -n "${1}" ]]; then
	PV="tags/v${1//v}"
else
	PV="latest"
fi
S="${TMPDIR}/${PN}"
T="${TMPDIR}/temp"
D="$(pwd)"

JQ_PV="jq-1.7.1"
if [[ $(uname -m) = "x86_64" ]]; then
	JQ_BIN="jq-linux-amd64"
	JL_ARCH="x64"
	JL_PLAT="linux-x86_64"
else
	JQ_BIN="jq-linux-i386"
	JL_ARCH="x86"
	JL_PLAT="linux-i686"
fi


einfo() {
	echo -e " \e[32;1m*\e[0m ${@}"
}

setup() {
	mkdir -p "${T}"/bin
	export PATH="${T}/bin:${PATH}"

	einfo "install jq"
	curl -sSo "${T}"/bin/jq "https://github.com/jqlang/jq/releases/download/${JQ_PV}/${JQ_BIN}"
	chmod +x  "${T}"/bin/jq

	einfo "install Julia"
	curl -sS "https://api.github.com/repos/JuliaLang/julia/releases/latest" \
		| jq -r --arg arch "${JL_ARCH}" --arg plat "${JL_PLAT}" '"https://julialang-s3.julialang.org/bin/linux/\($arch)/\((.tag_name[1:] | split("."))[:2] | join("."))/julia-\(.tag_name[1:])-\($plat).tar.gz"' \
		| xargs curl -sS \
		| tar -zxC "${T}" --strip-components 1
}

unpack() {
	mkdir -p "${S}"
	curl -sS "https://api.github.com/repos/juliastrings/${PN#lib}/releases/${PV}" \
		| jq -r '.tarball_url' \
		| xargs curl -sSL \
		| tar -zxC "${S}" --strip-components 1
}

prepare() {
	sed -i '/# wide or full/s/#/|| width=="A" #/' data/charwidths.jl
}

compile() {
	make ${PN}.so
	make update
}

pack() {
	local eaw="EastAsianWidth-$(grep "^UNICODE_VERSION=" data/Makefile | cut -d = -f 2)"
	xz    -c ${PN#lib}_data.c >"${D}"/${PN}-${eaw}.xz
	touch -r ${PN#lib}.c       "${D}"/${PN}-${eaw}.xz
}


for func in setup unpack prepare compile pack; do
	echo ">>> ${func}"
	case "${func}" in
	prepare|compile|pack)
		cd "${S}"
		;;
	*)
		cd "${TMPDIR}"
		;;
	esac
	${func}
done
echo
echo "... done!"