install.sh

#!/bin/sh
set -eu

REPOSITORY="${POLYLAYER_CLI_REPOSITORY:-polylayer/polylayer-cli}"
INSTALL_DIR="${POLYLAYER_INSTALL_DIR:-${HOME}/.local/bin}"
LIB_DIR="${POLYLAYER_LIB_DIR:-${HOME}/.local/lib/polylayer-cli}"
VERSION="${POLYLAYER_VERSION:-latest}"
ARCHIVE="polylayer-cli.tar.gz"
CHECKSUMS="SHA256SUMS"

if ! command -v node >/dev/null 2>&1; then
  printf '%s\n' "error: Polylayer CLI requires Node.js 18 or newer" >&2
  exit 1
fi

NODE_MAJOR="$(node -p 'Number(process.versions.node.split(".")[0])')"
if [ "${NODE_MAJOR}" -lt 18 ]; then
  printf '%s\n' "error: Polylayer CLI requires Node.js 18 or newer" >&2
  exit 1
fi

if ! command -v curl >/dev/null 2>&1; then
  printf '%s\n' "error: curl is required" >&2
  exit 1
fi
if ! command -v sha256sum >/dev/null 2>&1 &&
  ! command -v shasum >/dev/null 2>&1; then
  printf '%s\n' "error: sha256sum or shasum is required to verify the release" >&2
  exit 1
fi

case "${VERSION}" in
  latest)
    RELEASE_URL="https://github.com/${REPOSITORY}/releases/latest/download"
    ;;
  v*)
    RELEASE_URL="https://github.com/${REPOSITORY}/releases/download/${VERSION}"
    ;;
  *)
    RELEASE_URL="https://github.com/${REPOSITORY}/releases/download/v${VERSION}"
    ;;
esac

TEMP_DIR="$(mktemp -d)"
trap 'rm -rf "${TEMP_DIR}"' EXIT INT TERM

curl -fsSL "${RELEASE_URL}/${ARCHIVE}" -o "${TEMP_DIR}/${ARCHIVE}"
curl -fsSL "${RELEASE_URL}/${CHECKSUMS}" -o "${TEMP_DIR}/${CHECKSUMS}"
(
  cd "${TEMP_DIR}"
  if command -v sha256sum >/dev/null 2>&1; then
    sha256sum -c "${CHECKSUMS}"
  else
    shasum -a 256 -c "${CHECKSUMS}"
  fi
)

tar -xzf "${TEMP_DIR}/${ARCHIVE}" -C "${TEMP_DIR}"
test -f "${TEMP_DIR}/polylayer.mjs"
test -f "${TEMP_DIR}/openapi.json"

mkdir -p "${INSTALL_DIR}"
mkdir -p "${LIB_DIR}"
if [ -e "${INSTALL_DIR}/polylayer" ] && [ ! -L "${INSTALL_DIR}/polylayer" ]; then
  printf '%s\n' "error: ${INSTALL_DIR}/polylayer exists and is not a symlink; remove it explicitly first" >&2
  exit 1
fi
if [ -e "${INSTALL_DIR}/plyr" ] && [ ! -L "${INSTALL_DIR}/plyr" ]; then
  printf '%s\n' "error: ${INSTALL_DIR}/plyr exists and is not a symlink; remove it explicitly first" >&2
  exit 1
fi

install -m 0755 "${TEMP_DIR}/polylayer.mjs" "${LIB_DIR}/polylayer.mjs"
install -m 0644 "${TEMP_DIR}/openapi.json" "${LIB_DIR}/openapi.json"
ln -sfn "${LIB_DIR}/polylayer.mjs" "${INSTALL_DIR}/polylayer"
ln -sfn "polylayer" "${INSTALL_DIR}/plyr"

printf '%s\n' "Installed polylayer and plyr to ${INSTALL_DIR}"
case ":${PATH}:" in
  *":${INSTALL_DIR}:"*) ;;
  *) printf '%s\n' "Add ${INSTALL_DIR} to PATH to run the CLI." ;;
esac