#!/usr/bin/env sh
set -eu

REPO="${PANACHE_REPO:-jolars/panache}"
INSTALL_DIR="${PANACHE_INSTALL_DIR:-$HOME/.local/bin}"

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

case "$os" in
Linux)
  case "$arch" in
  x86_64 | amd64) target="x86_64-unknown-linux-gnu" ;;
  aarch64 | arm64) target="aarch64-unknown-linux-gnu" ;;
  *)
    echo "Unsupported Linux architecture: $arch" >&2
    exit 1
    ;;
  esac
  ;;
Darwin)
  case "$arch" in
  x86_64 | amd64) target="x86_64-apple-darwin" ;;
  arm64 | aarch64) target="aarch64-apple-darwin" ;;
  *)
    echo "Unsupported macOS architecture: $arch" >&2
    exit 1
    ;;
  esac
  ;;
*)
  echo "Unsupported operating system: $os" >&2
  exit 1
  ;;
esac

asset="panache-${target}.tar.gz"
url="https://github.com/${REPO}/releases/latest/download/${asset}"

tmpdir="$(mktemp -d)"
trap 'rm -rf "$tmpdir"' EXIT INT TERM

echo "Downloading ${asset}..."
curl --proto '=https' --tlsv1.2 -fLsS "$url" -o "$tmpdir/$asset"

tar -xzf "$tmpdir/$asset" -C "$tmpdir"
mkdir -p "$INSTALL_DIR"
install -m 755 "$tmpdir/panache" "$INSTALL_DIR/panache"

echo "Installed panache to $INSTALL_DIR/panache"
case ":$PATH:" in
*":$INSTALL_DIR:"*) ;;
*)
  echo "Note: $INSTALL_DIR is not on PATH."
  ;;
esac