#!/bin/bash
# Title: postinstall.sh
# Description: Wrapper script to start the postinstall_worker.sh script with logging.
# Last Updated: 2016-10-24
# Most Recent Changes:-Initial release
#######################################################################################

function print_usage
{
echo
echo " Usage: postinstall.sh [-y]"
echo
echo "   This script(${0}), provides logging for its worker script, worker_postinstall.sh"
echo
echo "   Recommended action"
echo "   1) Mount: mount -t nfs nfs-server:/admin /mnt"
echo "   2) Execute parent script: /mnt/deploy/postinstall.sh [-y]"
echo "      -y  => Yes, execute script without prompting."
echo
exit 1
}

#=====================================
# Get Script Arguments
#=====================================
# Reset POSIX variable in case it has been used previously in this shell
OPTIND=1

# By default, do not force run script. Prompt for running or not.
force_run_script="no"

while getopts "hy" opt; do
  case "${opt}" in
    h) # -h (help) argument
      print_usage
      exit 0
    ;;
    y) # -y (yes to running script) argument
      force_run_script="yes"
    ;;
    *) # invalid argument
      print_usage
      exit 0
    ;;
  esac
done

##====================
## Pre-req checks
##====================

## Ensure we are root ##
if [[ $(id --user) -ne 0 ]]; then
  echo ">>Error; this script must be run as root. Exiting..."
  exit 1
fi

##======================
## Set Script Variables
##======================

# Set base path from executed command (relative or full path works)
base_path="$(echo ${0} | sed 's/postinstall.sh//')"

# Set log file and script locations
postinstall_log="/root/postinstall.log"
postinstall_worker="worker_postinstall.sh"

##================
## Setup Logging
##================
echo -e ">>Logging output and errors to: ${postinstall_log}\n"

# Clear log and timestamp the beginning
cat /dev/null > ${postinstall_log}
echo -e "---- Log Started: $(date) ----\n" >> ${postinstall_log}

##=========================
## Execute External Scripts
##=========================
# Start script, pass base path argument
if [[ ${force_run_script} == "no" ]]; then
  ${base_path}${postinstall_worker} -d ${base_path} 2>&1 | tee -a ${postinstall_log}
elif [[ ${force_run_script} == "yes" ]]; then
  ${base_path}${postinstall_worker} -d ${base_path} -y 2>&1 | tee -a ${postinstall_log}
else
  echo -e ">>Error: Unknown value for force_run_script (${force_run_script}). Exiting..."
  exit 1
fi

##==========================
## Close Logs, Show Location
##==========================
# Ending timestamp
echo -e "\n---- Log Completed: $(date) ----" >> ${postinstall_log}

# Reminder of where the log file is at
echo -e "\n>>Logged output and errors were sent to: ${postinstall_log}\n"
echo -e "----> Remember to umount NFS before rebooting <----"