#!/usr/bin/env bash
set -euo pipefail

# === Konfiguration ===
REPO_URL="https://git.0xmax42.io/maxp/systemd-timer/releases/download/latest"
BINARY_NAME="systemd-timer"
INSTALL_PATH="/usr/local/bin"

# === Systemarchitektur erkennen ===
ARCH=$(uname -m)
case "$ARCH" in
  x86_64) ARCH="amd64" ;;
  aarch64 | arm64) ARCH="arm64" ;;
  *) echo "Unsupported architecture: $ARCH" >&2; exit 1 ;;
esac

OS=$(uname -s)
case "$OS" in
  Linux) OS="linux" ;;
  *) echo "Unsupported OS: $OS" >&2; exit 1 ;;
esac

# === Download-URL zusammensetzen ===
BINARY_FILE="${BINARY_NAME}-${OS}-${ARCH}"
DOWNLOAD_URL="${REPO_URL}/${BINARY_FILE}"

echo "📦 Installing ${BINARY_NAME} for ${OS}/${ARCH}..."
echo "🌐 Downloading from: ${DOWNLOAD_URL}"

# === Binary herunterladen ===
TMP_FILE=$(mktemp)
curl -fsSL "${DOWNLOAD_URL}" -o "${TMP_FILE}"
chmod +x "${TMP_FILE}"

# === Optional: SHA256-Check ===
curl -fsSL "${DOWNLOAD_URL}.sha256" -o "${TMP_FILE}.sha256"
echo "$(cat ${TMP_FILE}.sha256)  ${TMP_FILE}" | sha256sum -c -

# === Installation ===
echo "🚀 Installing to ${INSTALL_PATH}/${BINARY_NAME}"
if [ -w "$INSTALL_PATH" ]; then
  install -m 755 "${TMP_FILE}" "${INSTALL_PATH}/${BINARY_NAME}"
else
  sudo install -m 755 "${TMP_FILE}" "${INSTALL_PATH}/${BINARY_NAME}"
fi

echo "✅ Installation complete: $(command -v ${BINARY_NAME})"
"${BINARY_NAME}" --version || true