#!/usr/bin/env bash
set -euo pipefail

version="v0.10.0"
sha256="0d1633b71e44081c6a3ca57ad5be3df7a9563698827638838939c3c832e87351"
install_dir="${1:-${LORE_INSTALL_DIR:-${HOME}/.local/bin}}"

if [[ "$(uname -s)" != Linux || "$(uname -m)" != x86_64 ]]; then
    echo "error: this installer currently supports Linux x86_64 only" >&2
    exit 1
fi

mkdir -p "$install_dir"
tmp_dir="$(mktemp -d)"
trap 'rm -rf "$tmp_dir"' EXIT

archive="lore-${version}-x86_64-unknown-linux-gnu.tar.gz"
url="https://github.com/EpicGames/lore/releases/download/${version}/${archive}"

curl --fail --location --silent --show-error --output "$tmp_dir/$archive" "$url"
printf '%s  %s\n' "$sha256" "$tmp_dir/$archive" | sha256sum --check --status
tar --extract --gzip --file "$tmp_dir/$archive" --directory "$tmp_dir"

binary="$(find "$tmp_dir" -type f -name lore -print -quit)"
if [[ -z "$binary" ]]; then
    echo "error: Lore archive did not contain a lore binary" >&2
    exit 1
fi

install -m 0755 "$binary" "$install_dir/lore"
"$install_dir/lore" --version