#!/bin/bash

# KNEL System Configuration Module
# Applies system-wide configuration files

set -euo pipefail

echo "Running system configuration module..."

# Create necessary directories
mkdir -p /root/.ssh

# Deploy system configuration files
if [[ -f ./templates/zshrc ]]; then
    mo ./templates/zshrc > /etc/zshrc
fi

if [[ -f ./templates/aliases ]]; then
    mo ./templates/aliases > /etc/aliases
    newaliases
fi

if [[ -f ./templates/rsyslog.conf ]]; then
    mo ./templates/rsyslog.conf > /etc/rsyslog.conf
fi

# Configure DHCP client
if [[ -f ./templates/dhclient.conf ]]; then
    mo ./templates/dhclient.conf > /etc/dhcp/dhclient.conf
fi

# Configure SNMP
systemctl stop snmpd 2>/dev/null || true
/etc/init.d/snmpd stop 2>/dev/null || true

if [[ -f ./templates/snmp-sudo.conf ]]; then
    mo ./templates/snmp-sudo.conf > /etc/sudoers.d/Debian-snmp
fi

# Adjust SNMP service for log verbosity
sed -i "s|-Lsd|-LS6d|" /lib/systemd/system/snmpd.service

# Configure SNMP based on system type
if [[ $IS_RASPI -eq 1 ]] && [[ -f ./templates/snmpd-rpi.conf ]]; then
    mo ./templates/snmpd-rpi.conf > /etc/snmp/snmpd.conf
elif [[ $IS_PHYSICAL_HOST -eq 1 ]] && [[ -f ./templates/snmpd-physicalhost.conf ]]; then
    mo ./templates/snmpd-physicalhost.conf > /etc/snmp/snmpd.conf
elif [[ $IS_VIRT_GUEST -eq 1 ]] && [[ -f ./templates/snmpd.conf ]]; then
    mo ./templates/snmpd.conf > /etc/snmp/snmpd.conf
fi

# Configure lldpd
if [[ -f ./templates/lldpd ]]; then
    mo ./templates/lldpd > /etc/default/lldpd
    systemctl restart lldpd
fi

# Configure Cockpit
if [[ -f ./templates/disallowed-users ]]; then
    mo ./templates/disallowed-users > /etc/cockpit/disallowed-users
    systemctl restart cockpit
fi

# Configure NTP for non-NTP servers
if [[ $NTP_SERVER_CHECK -eq 0 ]] && [[ -f ./templates/ntp.conf ]]; then
    mo ./templates/ntp.conf > /etc/ntpsec/ntp.conf
    systemctl restart ntpsec.service
fi

# Reload systemd and restart SNMP
systemctl daemon-reload
systemctl restart snmpd 2>/dev/null || true
/etc/init.d/snmpd restart 2>/dev/null || true

echo "System configuration module completed"