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

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

help()
{
  thisfilename=$(basename -- "$0")
  echo "$thisfilename"
  echo "Modify an existing email."
  echo ""
  echo "usage: $thisfilename -e <email> [OPTIONS]"
  echo ""
  echo "  -h              Print this help."
  echo "  -e <email>      Email account to modify."
  echo "  -p <password>   Set new password."
  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."
  echo "  -s <0|1>        1 for enabled, 0 for disabled. Default is in db structure and is normally set to 1."
  echo "  -j <0|1|2>      Filter Junk/Spam message. 0 = no filtering. 1 = filter Junk only. 2 = filter Junk & Spam. Default is 2."
  exit
}

vmail:getoptions "$@"

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

# get mbox id (and thus check if email account already exists)
mbox_id=`mysql --defaults-extra-file=$MYSQL_CONNECTION_INFO_FILE -s -r -N -e "SELECT vm_mboxes.id from vm_mboxes, vm_domains WHERE vm_domains.domain='$domain' AND vm_mboxes.mbox='$mbox' AND vm_domains.id=vm_mboxes.domain_id;"`

if [ -z $mbox_id ] ; then
  echo "ERROR: Email address $email does not exist."
  exit
fi

# set update portion of command to empty string
dbset=""

# check for quota update
if [ -n "$quota" ]; then
  # make quota uppercase in case it is set to NULL
  quota=`echo $quota | tr [:lower:] [:upper:]`
  if [[ "$quota" =~ ^[0-9]+$ ]] || [[ "$quota" == "NULL" ]]; then
    dbset=" quota=$quota"
  else
    echo "ERROR: quota (-q) must numeric or NULL"
    exit 1
  fi
fi

# check for ratelimit update
if [ -n "$ratelimit" ]; then
  # make ratelimit uppercase in case it is set to NULL
  ratelimit=`echo $ratelimit | tr [:lower:] [:upper:]`
  if [[ "$ratelimit" =~ ^[0-9]+$ ]] || [[ "$ratelimit" == "NULL" ]]; then
    dbset=" ratelimit=$ratelimit"
  else
    echo "ERROR: ratelimit (-r) must numeric or NULL"
    exit 1
  fi
fi

# check for password update
if [ ! -z "$password" ]; then
  passwd=`doveadm -o stats_writer_socket_path= pw -s sha512-crypt -p "$password"`
  if [ ! -z "$dbset" ]; then
    dbset="$dbset,"
  fi
  dbset=" $dbset passwd=\"$passwd\""
fi

# check for status update
if [ ! -z "$status" ]; then
  if [ ! -z "$dbset" ]; then
    dbset="$dbset,"
  fi
  dbset="$dbset status=\"$status\""
fi

# check for junk filter update
if [ ! -z "$filter" ]; then
  if [ ! -z "$dbset" ]; then
    dbset="$dbset,"
  fi
  dbset="$dbset filter=\"$filter\""
fi

if [ -n "$dbset" ]; then

  # build query
  dbcmd="mysql --defaults-extra-file=$MYSQL_CONNECTION_INFO_FILE -e 'UPDATE vm_mboxes SET $dbset WHERE id=\"$mbox_id\";'"
  eval $dbcmd

else

  echo "ERROR: No values passed for update."

fi