install.sh

#!/bin/sh
# Installer for the initializ CLI.
#   curl -fsSL https://raw.githubusercontent.com/initializ/cli/main/install.sh | sh
# Env overrides:
#   VERSION=vX.Y.Z    install a specific release (default: latest)
#   INSTALL_DIR=path  install destination (default: /usr/local/bin)
set -eu

REPO="initializ/cli"
INSTALL_DIR="${INSTALL_DIR:-/usr/local/bin}"

os=$(uname -s | tr '[:upper:]' '[:lower:]')
case "$os" in
  linux | darwin) ;;
  *)
    echo "unsupported OS: $os — download manually from https://github.com/$REPO/releases" >&2
    exit 1
    ;;
esac

arch=$(uname -m)
case "$arch" in
  x86_64 | amd64) arch=amd64 ;;
  arm64 | aarch64) arch=arm64 ;;
  *)
    echo "unsupported architecture: $arch" >&2
    exit 1
    ;;
esac

version="${VERSION:-}"
if [ -z "$version" ]; then
  version=$(curl -fsSL "https://api.github.com/repos/$REPO/releases/latest" |
    grep '"tag_name"' | head -1 | cut -d '"' -f 4)
fi
if [ -z "$version" ]; then
  echo "could not determine the latest version" >&2
  exit 1
fi

archive="initializ_${os}_${arch}.tar.gz"
base="https://github.com/$REPO/releases/download/$version"

tmp=$(mktemp -d)
trap 'rm -rf "$tmp"' EXIT

echo "Downloading initializ $version ($os/$arch)..." >&2
curl -fsSL "$base/$archive" -o "$tmp/$archive"
curl -fsSL "$base/checksums.txt" -o "$tmp/checksums.txt"

if command -v sha256sum >/dev/null 2>&1; then
  sha_cmd="sha256sum"
else
  sha_cmd="shasum -a 256"
fi
(cd "$tmp" && grep "  $archive\$" checksums.txt | $sha_cmd -c - >/dev/null) || {
  echo "checksum verification failed for $archive" >&2
  exit 1
}

tar -xzf "$tmp/$archive" -C "$tmp"

if [ -w "$INSTALL_DIR" ]; then
  install "$tmp/initializ" "$INSTALL_DIR/initializ"
else
  echo "Installing to $INSTALL_DIR (requires sudo)..." >&2
  sudo install "$tmp/initializ" "$INSTALL_DIR/initializ"
fi

echo "Installed initializ $version to $INSTALL_DIR/initializ" >&2