#!/bin/sh
# PIPER installer — downloads the right prebuilt binary from the latest
# GitHub release. No sudo, no package manager, nothing outside this folder.
# Read me first; I'm short on purpose.
set -eu

REPO="antoniociccia/piper"
BASE="https://github.com/${REPO}/releases/latest/download"

os="$(uname -s)"
arch="$(uname -m)"

case "$os" in
  Darwin) os="darwin" ;;
  Linux)  os="linux" ;;
  *)
    echo "unsupported OS: $os — grab a binary from https://github.com/${REPO}/releases" >&2
    exit 1 ;;
esac

case "$arch" in
  x86_64|amd64)  arch="x64" ;;
  arm64|aarch64) arch="arm64" ;;
  *)
    echo "unsupported architecture: $arch — grab a binary from https://github.com/${REPO}/releases" >&2
    exit 1 ;;
esac

asset="piper-${os}-${arch}"
echo "downloading ${asset} (latest release)…"
curl -fL --progress-bar "${BASE}/${asset}" -o piper
chmod +x piper

# macOS: strip Gatekeeper's quarantine flag if present (binary isn't notarised yet).
if [ "$os" = "darwin" ]; then
  xattr -d com.apple.quarantine piper 2>/dev/null || true
fi

echo
echo "done. PIPER is ./piper — try:"
echo
echo "  ./piper"
echo
echo "optionally move it into your PATH:"
echo "  sudo mv piper /usr/local/bin/"