#!/bin/sh
# Nate's Cleaner installer — https://cleaner.nates-software.com
# Downloads version 0.2.0, verifies its SHA-256, installs into
# ~/.local/share/nates-cleaner and adds the `nates-cleaner` command to ~/.local/bin.
set -eu

VERSION="0.2.0"
SHA256="5ebc6093add6a8831803faf54320d3f379daeed396840a1390589f76cc50a5eb"
URL="https://cleaner.nates-software.com/nates-cleaner-$VERSION.tar.gz"
DEST="${NATES_CLEANER_HOME:-$HOME/.local/share/nates-cleaner}"

case "$(uname -s)" in
  Darwin|Linux) ;;
  *) echo "Nate's Cleaner supports macOS and Linux." >&2; exit 1 ;;
esac

sha256() {
  if command -v shasum >/dev/null 2>&1; then shasum -a 256 "$1" | cut -d' ' -f1
  else sha256sum "$1" | cut -d' ' -f1; fi
}

tmp=$(mktemp -d)
trap 'rm -rf "$tmp"' EXIT
echo "Downloading Nate's Cleaner $VERSION…"
curl -fsSL "$URL" -o "$tmp/nates-cleaner.tar.gz"
actual=$(sha256 "$tmp/nates-cleaner.tar.gz")
if [ "$actual" != "$SHA256" ]; then
  echo "Checksum mismatch (expected $SHA256, got $actual). Nothing was installed." >&2
  exit 1
fi

mkdir -p "$DEST"
rm -rf "$DEST/$VERSION.partial"
mkdir "$DEST/$VERSION.partial"
tar -xzf "$tmp/nates-cleaner.tar.gz" -C "$DEST/$VERSION.partial" --strip-components=1
rm -rf "$DEST/$VERSION"
mv "$DEST/$VERSION.partial" "$DEST/$VERSION"
ln -sfn "$DEST/$VERSION" "$DEST/current"
sh "$DEST/current/install.sh"