#!/bin/sh
# ClearKey CLI installer
# Usage: curl -sSL https://verifylinkinfra.com/install.sh | bash
#
# Environment variables:
#   CLEARKEY_VERSION  - specific version to install (default: latest)
#   CLEARKEY_DIR      - install directory (default: /usr/local/bin)

set -e

REPO="VerifyLinkInfra-cloud/clearkey"
INSTALL_DIR="${CLEARKEY_DIR:-/usr/local/bin}"
BINARY="clearkey"

# Detect OS
detect_os() {
  case "$(uname -s)" in
    Linux*)   echo "linux" ;;
    Darwin*)  echo "darwin" ;;
    MINGW*|MSYS*|CYGWIN*) echo "windows" ;;
    *)        echo "unsupported" ;;
  esac
}

# Detect architecture
detect_arch() {
  case "$(uname -m)" in
    x86_64|amd64)  echo "amd64" ;;
    aarch64|arm64)  echo "arm64" ;;
    armv7l)         echo "armv7" ;;
    *)              echo "unsupported" ;;
  esac
}

# Get latest version from GitHub releases
get_latest_version() {
  if command -v curl > /dev/null 2>&1; then
    curl -sSL "https://api.github.com/repos/${REPO}/releases/latest" | grep '"tag_name"' | sed -E 's/.*"v?([^"]+)".*/\1/'
  elif command -v wget > /dev/null 2>&1; then
    wget -qO- "https://api.github.com/repos/${REPO}/releases/latest" | grep '"tag_name"' | sed -E 's/.*"v?([^"]+)".*/\1/'
  else
    echo "Error: curl or wget required" >&2
    exit 1
  fi
}

# Download file
download() {
  if command -v curl > /dev/null 2>&1; then
    curl -sSL -o "$2" "$1"
  elif command -v wget > /dev/null 2>&1; then
    wget -qO "$2" "$1"
  fi
}

main() {
  echo "ClearKey CLI Installer"
  echo "====================="
  echo ""

  OS=$(detect_os)
  ARCH=$(detect_arch)

  if [ "$OS" = "unsupported" ] || [ "$ARCH" = "unsupported" ]; then
    echo "Error: unsupported platform $(uname -s)/$(uname -m)"
    echo "Build from source: go install github.com/${REPO}/cmd/clearkey@latest"
    exit 1
  fi

  VERSION="${CLEARKEY_VERSION:-$(get_latest_version)}"
  if [ -z "$VERSION" ]; then
    echo "Error: could not determine latest version."
    echo "Set CLEARKEY_VERSION manually or install via Go:"
    echo "  go install github.com/${REPO}/cmd/clearkey@latest"
    exit 1
  fi

  echo "  Platform:  ${OS}/${ARCH}"
  echo "  Version:   v${VERSION}"
  echo "  Directory: ${INSTALL_DIR}"
  echo ""

  # Build download URL
  EXT=""
  if [ "$OS" = "windows" ]; then
    EXT=".exe"
  fi

  ARCHIVE="clearkey_${VERSION}_${OS}_${ARCH}.tar.gz"
  URL="https://github.com/${REPO}/releases/download/v${VERSION}/${ARCHIVE}"

  echo "Downloading ${ARCHIVE}..."
  TMPDIR=$(mktemp -d)
  download "$URL" "${TMPDIR}/${ARCHIVE}"

  echo "Extracting..."
  tar -xzf "${TMPDIR}/${ARCHIVE}" -C "${TMPDIR}"

  echo "Installing to ${INSTALL_DIR}..."
  if [ -w "$INSTALL_DIR" ]; then
    mv "${TMPDIR}/${BINARY}${EXT}" "${INSTALL_DIR}/${BINARY}${EXT}"
  else
    echo "  (requires sudo)"
    sudo mv "${TMPDIR}/${BINARY}${EXT}" "${INSTALL_DIR}/${BINARY}${EXT}"
  fi

  chmod +x "${INSTALL_DIR}/${BINARY}${EXT}"

  # Cleanup
  rm -rf "$TMPDIR"

  echo ""
  echo "ClearKey CLI v${VERSION} installed successfully!"
  echo ""
  echo "  Run 'clearkey version' to verify."
  echo "  Run 'clearkey --help' to get started."
  echo ""
}

main