#!/bin/bash
#
# vmail-stack
# https://git.stack-source.com/msb/vmail-stack
# MIT License Copyright (c) 2021 Matthew Saunders Brown

# load config
source /usr/local/etc/vmail.conf

help()
{
  thisfilename=$(basename -- "$0")
  echo "$thisfilename"
  echo "Delete domain and all associated email accounts from the vmail system."
  echo ""
  echo "usage: $thisfilename domain [OPTIONS]"
  echo ""
  echo "  -h          Print this help."
  exit
}

# check for and set domain
if [ -n "$1" ]; then
  if [ $1 == "-h" ]; then
    help
  elif vmail::validate_domain $1; then
    domain=$1
    shift
  else
    echo "ERROR: Invalid domain name: $1"
    exit 1
  fi
else
  help
fi

# set any options that were passed
while getopts "h" opt; do
  case "${opt}" in
    h )
      help
      exit;;
    \? )
      echo "Invalid option: $OPTARG" 1>&2
      ;;
    : )
      echo "Invalid option: $OPTARG requires an argument" 1>&2
      ;;
  esac
done

# build query
dbcmd="mysql --defaults-extra-file=$MYSQL_CONNECTION_INFO_FILE"
dbcmdopts="-s -r -N -e"

# check if domain exists in vmail database
dbquery="SELECT COUNT(*) FROM vm_domains WHERE domain='$domain';"
rowcount=`$dbcmd $dbcmdopts "$dbquery"`

if [ "$rowcount" -eq '1' ] ; then
  # domain exists, delete from all vmail tables
  # singled delete should be sufficient for vm_* tables due to ON DELETE CASCADE foreign key references
  dbquery="DELETE FROM vm_domains WHERE domain='$domain';"
  echo $dbcmd $dbcmdopts "\"$dbquery\""
  dbquery="DELETE FROM sa_userpref WHERE username LIKE '%@$domain'"
  echo $dbcmd $dbcmdopts "\"$dbquery\""
  dbquery="DELETE FROM vm_greylisting WHERE recipient LIKE '%@$domain'"
  echo $dbcmd $dbcmdopts "\"$dbquery\""
  # this should be sufficient for rc due to ON DELETE CASCADE foreign key references
  dbquery="DELETE FROM rc_users WHERE username LIKE '%@$domain'"
  echo $dbcmd $dbcmdopts "\"$dbquery\""
elif [ "$rowcount" -eq '0' ] ; then
  echo "ERROR: $domain does not exist in vmail database."
  exit 1
else
  echo "ERROR: System error querying vmail database"
  exit 1
fi

if [ -d "$VMAIL_DIR/$domain" ] ; then
  echo "/usr/bin/rm -r $VMAIL_DIR/$domain"
fi