#!/bin/bash
#
# vmail-stack
# https://git.stack-source.com/msb/vmail-stack
# Copyright (c) 2022 Matthew Saunders Brown <matthewsaundersbrown@gmail.com>
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)

# load include file
source $(dirname $0)/vmail.sh

help()
{
  thisfilename=$(basename -- "$0")
  echo "$thisfilename"
  echo "Add email account to vmail system"
  echo ""
  echo "usage: $thisfilename -e <email> -p <password> [-q <quota>] [-r <ratelimit>] [-s <0|1>] [-j <0|1|2>] [-h]"
  echo ""
  echo "  -h              Print this help."
  echo "  -e <email>      Email address to add."
  echo "  -p <password>   Unencrypted Password for new email address."
  echo "  -q <quota>      Set mailbox quota in GB, otherwise default for this domain is used. NULL means no limit."
  echo "  -r <ratelimit>  Hourly rate limit for sending, multiplied by 10 for the daily limit. If unset domain default is used."
  echo "  -s <0|1|2>      Status. 0 = disabled, 1 = enabled, 2 = enabled with admin privileges. Default is 1."
  echo "  -j <0|1|2>      Filter Junk/Spam messages. 0 = no filtering. 1 = filter Junk only. 2 = filter Junk & Spam. Default is 2."
}

vmail:getoptions "$@"

# check for email
if [[ -z $email ]]; then
  echo "email is required"
  exit 1
fi

# check for password
if [[ -z $password ]]; then
  echo "password is required"
  exit 1
fi

# get domain_id to check if domain already exists
domain_id=`mysql --defaults-extra-file=$MYSQL_CONNECTION_INFO_FILE -s -r -N -e "SELECT id from vm_domains WHERE domain='$domain';"`
if [[ -z $domain_id ]] ; then
  echo "ERROR: Domain $domain does not exist."
  exit 1
fi

# make sure mbox doesn't already exist
mbox_id=`mysql --defaults-extra-file=$MYSQL_CONNECTION_INFO_FILE -s -r -N -e "SELECT id FROM vm_mboxes WHERE mbox='$mbox' AND domain='$domain';"`
if [[  -z $mbox_id ]] ; then
  # mbox does not exist, build SQL
  # first encrypt password
  passwd=`/usr/bin/openssl passwd -6 "$password"`
  passwd="{SHA512-CRYPT}$passwd"
  dbcmd="mysql --defaults-extra-file=$MYSQL_CONNECTION_INFO_FILE -e 'INSERT INTO vm_mboxes SET mbox=\"$mbox\", domain=\"$domain\", passwd=\"$passwd\""
  if [[ -n $status ]] ; then
    dbcmd="$dbcmd, status=\"$status\""
  fi
  if [[ -n $filter ]] ; then
    dbcmd="$dbcmd, filter=\"$filter\""
  fi
  if [[ -z "$quota" ]] ; then
    # get mbox_quota_default from domains table
    quota=`mysql --defaults-extra-file=$MYSQL_CONNECTION_INFO_FILE -s -r -N -e "SELECT mbox_quota_default from vm_domains WHERE domain='$domain';"`
  fi
  if [[ "$quota" == "NULL" ]]; then
    dbcmd="$dbcmd, quota=NULL"
  elif [[ "$quota" =~ ^[0-9]+$ ]]; then
    dbcmd="$dbcmd, quota=\"$quota\""
  else
    echo "ERROR: quota (-q) must numeric or NULL"
    exit 1
  fi
  if [ -z "$ratelimit" ] ; then
    # get mbox_ratelimit_default from domains table
    ratelimit=`mysql --defaults-extra-file=$MYSQL_CONNECTION_INFO_FILE -s -r -N -e "SELECT mbox_ratelimit_default from vm_domains WHERE domain='$domain';"`
  fi
  if [[ "$ratelimit" == "NULL" ]]; then
    dbcmd="$dbcmd, ratelimit=NULL"
  elif [[ "$ratelimit" =~ ^[0-9]+$ ]]; then
    dbcmd="$dbcmd, ratelimit=\"$ratelimit\""
  else
    echo "ERROR: ratelimit (-r) must numeric or NULL"
    exit 1
  fi
  dbcmd="$dbcmd;'"
elif [[ $mbox_id -gt '0' ]] ; then
  echo "ERROR: $email already exists in vmail database."
  exit 1
else
  echo "ERROR: System error querying vmail database."
  exit 1
fi

# add mbox
eval $dbcmd

# create all required vmail dirs
if [ ! -d "/var/vmail/$domain" ] ; then
  install -o vmail -g vmail -m 750 -d /var/vmail/$domain
fi
if [ ! -d "/var/vmail/$domain/$mbox" ] ; then
  install -o vmail -g vmail -m 750 -d /var/vmail/$domain/$mbox
fi
if [ ! -d "/var/vmail/$domain/$mbox/Maildir" ] ; then
  install -o vmail -g vmail -m 750 -d /var/vmail/$domain/$mbox/Maildir
fi
if [ ! -d "/var/vmail/$domain/$mbox/Maildir/cur" ] ; then
  install -o vmail -g vmail -m 750 -d /var/vmail/$domain/$mbox/Maildir/cur
fi