#!/bin/bash
# /usr/local/bin/sys-update
# Formal system maintenance utility with administrative enforcement

LOG_FILE="/var/log/system-update.log"

# Administrative Privileges Check
if [ "$EUID" -ne 0 ]; then
    printf ":: [ERROR] This utility requires administrative privileges. Please execute with 'sudo'.\n" >&2
    exit 1
fi

set -e

log_message() {
    printf "[$(date +'%Y-%m-%d %H:%M:%S')] %s\n" "$1" >> "$LOG_FILE"
}

log_message "START: Commencing system maintenance cycle."
printf ":: Initializing hardware state: Activating discrete GPU...\n"
gpu-toggle on

printf ":: Synchronizing package repositories and performing system upgrade...\n"
xbps-install -Su

printf ":: Commencing filesystem optimization and orphan removal...\n"
xbps-remove -Oo

printf ":: Executing kernel image purge for obsolete versions...\n"
vkpurge rm all

printf ":: Restoring power-efficient state: Deactivating discrete GPU...\n"
gpu-toggle off

log_message "FINISH: Maintenance cycle completed successfully."
printf ":: [SUCCESS] Operation logged to %s\n" "$LOG_FILE"