#!/bin/bash

# Update dynamic MOTD file
# {{ ansible_managed }}

set -o errexit

# Title-case generator
tc() { set ${*,,} ; echo ${*^} ; }

TMPFILE=$(mktemp)
TGTFILE=/run/pvc-motd.dynamic

NAME="$( grep '^NAME=' /etc/os-release | awk -F'"' '{ print $2 }' )"
VERSION_ID="$( cat /etc/debian_version )"
VERSION_CODENAME="$( grep '^VERSION_CODENAME=' /etc/os-release | awk -F'=' '{ print $2 }' )"
DEBVER="${NAME} ${VERSION_ID} \"$(tc ${VERSION_CODENAME} )\""
PVCVER="$( /usr/share/pvc/pvcnoded.py --version || echo 'Unknown' )"

echo >> $TMPFILE
echo -e "\033[01;34mParallel Virtual Cluster (PVC) Node\033[0m" >> $TMPFILE
echo -e "> \033[1;34mNode name:\033[0m \033[01;36m$(hostname)\033[0m" >> $TMPFILE
echo -e "> \033[1;34mCluster name:\033[0m \033[01;36m{{ cluster_group }}\033[0m" >> $TMPFILE
echo -e "> \033[1;34mSystem type:\033[0m PVC \033[1;36m{% if is_coordinator %}coordinator{% else %}hypervisor{% endif %}\033[0m node" >> $TMPFILE
echo -e "> \033[1;34mPVC version:\033[0m ${PVCVER}" >> $TMPFILE
echo -e "> \033[1;34mBase system:\033[0m {{ ansible_lsb.description if ansible_lsb else 'Debian GNU/Linux' }}" >> $TMPFILE
echo -e "> \033[1;34mKernel:\033[0m $(/bin/uname -vm)" >> $TMPFILE

# Get machine information
HARDWARE_DETAIL="$( /usr/sbin/dmidecode | grep -A7 'System Information' )"
HARDWARE_VENDOR="$( grep 'Manufacturer:' <<<"${HARDWARE_DETAIL}" | sed 's/Manufacturer: //; s/\s*$//g; s/^\s*//g' )"
if [[ -z ${HARDWARE_VENDOR} ]]; then
    HARDWARE_VENDOR="Unknown"
fi
HARDWARE_MODEL="$( grep 'Product Name:' <<<"${HARDWARE_DETAIL}" | sed 's/Product Name: //; s/\s*$//g; s/^\s*//g' )"
if [[ -z ${HARDWARE_MODEL} ]]; then
    HARDWARE_MODEL="Unknown"
fi
HARDWARE_SERIAL="$( grep 'Serial Number:' <<<"${HARDWARE_DETAIL}" | sed 's/Serial Number: //; s/\s*$//g; s/^\s*//g' )"
if [[ -z ${HARDWARE_SERIAL} ]]; then
    HARDWARE_SERIAL="Unknown"
fi
echo -e -n "> \033[1;34mHardware Vendor:\033[0m ${HARDWARE_VENDOR}" >> $TMPFILE
echo -e -n "  \033[1;34mModel:\033[0m ${HARDWARE_MODEL}" >> $TMPFILE
echo -e -n "  \033[1;34mSerial:\033[0m ${HARDWARE_SERIAL}" >> $TMPFILE
echo >> $TMPFILE

mv $TMPFILE $TGTFILE || rm $TMPFILE
chmod 644 $TGTFILE