#!/bin/bash

# This script is used change the users and passwords for manweb
# This script must be run as root or with sudo
if [[ $EUID -ne 0 ]]; then
  echo "This script must be run as root or with sudo" 1>&2
  exit 1
fi

helpMenu() {
  echo 'usage: manweb-passwd [-c /path/to/manweb.conf] <username>'
  echo '   -c: specify the path to the manweb.conf file, otherwise the default'
  echo '       will be used (/etc/manweb/manweb.conf)'
  echo
  echo '   if the username already exists, the password for that user will be changed'
  echo '   if the username does not exist, a new user will be created'
  echo '   if a username exists  and no password is given, the user will be deleted'
}

if [[ "$1" == "" || "$#" == "0" ]]; then
  helpMenu
  exit 1
fi
if [[ "$1" == "--help" || "$1" == "-h" || "$1" == "-?" || "$1" == "help" ]]; then
  helpMenu
  exit 0
fi

manweb_running() {
  echo "manweb is running"
  echo "Please stop all instances of manweb before running this script."
}

echo "Checking if manweb is running..."
systemctl is-active manweb >/dev/null 2>&1
if [[ "$?" == "0" ]]; then
  manweb_running
  exit 1
fi
ps x | grep -E '/.*bin.*/manweb$' > /dev/null 2>&1
if [[ "$?" == "0" ]]; then
  manweb_running
  exit 1
fi

confFile="/etc/manweb/manweb.conf"
if [[ "$#" == "3" && "$1" == "-c" ]]; then
  if [[ ! "$2" == *".conf" || ! -f "$2" ]]; then
    echo "File $2 does not exist or is not a conf file."
    exit 1
  fi
  confFile="$2"
  username="$3"
elif [[ "$#" == "1" ]]; then
  username="$1"
else
  helpMenu
  exit 1
fi

sudo -u manweb /usr/bin/manweb -c "$confFile" -pu "$username"