#!/bin/bash

# KNEL System Initialization
# This initializer performs basic system detection and setup

set -euo pipefail

echo "Performing system initialization..."

# Detect system characteristics
export UBUNTU_CHECK="$(grep -c Ubuntu /etc/os-release 2>/dev/null || echo 0)"
export IS_PHYSICAL_HOST="$(/usr/sbin/dmidecode -t System 2>/dev/null | grep -c Dell || echo 0)"
export SUBODEV_CHECK="$(getent passwd | grep -c subodev || echo 0)"
export LOCALUSER_CHECK="$(getent passwd | grep -c localuser || echo 0)"
export KALI_CHECK="$(grep -c kali /etc/os-release 2>/dev/null || echo 0)"

# Detect virtualization
if command -v virt-what >/dev/null 2>&1; then
    export VIRT_TYPE="$(virt-what 2>/dev/null || echo "")"
    export IS_VIRT_GUEST="$(echo "$VIRT_TYPE" | grep -E -c 'hyperv|kvm' || echo 0)"
    export IS_KVM_GUEST="$(echo "$VIRT_TYPE" | grep -c 'kvm' || echo 0)"
else
    export VIRT_TYPE=""
    export IS_VIRT_GUEST="0"
    export IS_KVM_GUEST="0"
fi

# Detect special host types
export LIBRENMS_CHECK="$(hostname | grep -c tsys-librenms || echo 0)"
export NTP_SERVER_CHECK="$(hostname | grep -E -c 'pfv-netboot|pfvsvrpi' || echo 0)"
export DEV_WORKSTATION_CHECK="$(hostname | grep -E -c 'subopi-dev|CharlesDevServer' || echo 0)"

# Raspberry Pi detection
if command -v vcgencmd >/dev/null 2>&1; then
    export IS_RASPI="1"
else
    export IS_RASPI="0"
fi

# Set current timestamp for logging
export CURRENT_TIMESTAMP="$(date '+%Y-%m-%d %H:%M:%S')"

echo "System initialization complete"
echo "Ubuntu: $UBUNTU_CHECK, Physical: $IS_PHYSICAL_HOST, Virtual: $IS_VIRT_GUEST"