#! /bin/bash

# shellcheck source=../scripts/helpers/index.sh
source /usr/local/bin/helpers/index.sh

function _main
{
  [[ ${1:-} == 'help' ]] && { __usage ; exit 0 ; }

  local MAIL_ACCOUNT="${1}"
  shift
  local PASSWD="${*}"

  _manage_accounts_create "${MAIL_ACCOUNT}" "${PASSWD}"

  # Change Detection will be triggered from `postfix-accounts.cf` update,
  # block until event processed (actual account creation handled there):
  _wait_until_account_maildir_exists "${MAIL_ACCOUNT}"
}

function __usage
{
  printf '%s' "${PURPLE}addmailuser${RED}(${YELLOW}8${RED})

${ORANGE}USAGE${RESET}
    ./setup.sh email add <MAIL ACCOUNT> [<PASSWORD>]

${ORANGE}OPTIONS${RESET}
    ${BLUE}Generic Program Information${RESET}
        help       Print the usage information.

${ORANGE}DESCRIPTION${RESET}
    Add a new mail account (email address).

    To avoid a password being logged in the command history of your shell,
    you may omit it, you'll be prompted to input the password instead.

${ORANGE}EXAMPLES${RESET}
    ${LWHITE}./setup.sh email add user@example.com${RESET}
        Create the email account 'user@example.com'.

        You will be prompted to input a password afterwards since no password was supplied.

${ORANGE}EXIT STATUS${RESET}
    Exit status is 0 if command was successful. If wrong arguments are provided
    or arguments contain errors, the script will exit early with exit status 1.

"
}

# TODO: Remove this method or at least it's usage in `addmailuser`. If tests are failing, correct the tests.
#
# This method was added to delay command completion until a change detection event had processed the newly added user,
# confirmed once maildir was created. It was a workaround to accomodate the test suite apparently, but otherwise
# prevents batch adding users (each one would have to go through their own change detection event).
#
# Originally introduced in PR 1980 (afterwards two futher PRs deleted, and then reverted that deletion):
# https://github.com/docker-mailserver/docker-mailserver/pull/1980
# Not much details/discussion in the PR, these are the specific commits:
# - Initial commit: https://github.com/docker-mailserver/docker-mailserver/pull/1980/commits/2ed402a12cedd412abcf577e8079137ea05204fe#diff-92d2047e4a9a7965f6ef2f029dd781e09265b0ce171b5322a76e35b66ab4cbf4R67
# - Follow-up commit: https://github.com/docker-mailserver/docker-mailserver/pull/1980/commits/27542867b20c617b63bbec6fdcba421b65a44fbb#diff-92d2047e4a9a7965f6ef2f029dd781e09265b0ce171b5322a76e35b66ab4cbf4R67
#
# Original reasoning for this method (sounds like a network storage I/O issue):
# Tests fail if the creation of /var/mail/${DOMAIN}/${USER} doesn't happen fast enough after addmailuser executes (check-for-changes.sh race-condition)
# Prevent infinite loop in tests like "checking accounts: user3 should have been added to /tmp/docker-mailserver/postfix-accounts.cf even when that file does not exist"
function _wait_until_account_maildir_exists
{
  local MAIL_ACCOUNT=${1}

  if [[ -f ${CHKSUM_FILE} ]]
  then
    local USER="${MAIL_ACCOUNT%@*}"
    local DOMAIN="${MAIL_ACCOUNT#*@}"

    local MAIL_ACCOUNT_STORAGE_DIR="/var/mail/${DOMAIN}/${USER}"
    while [[ ! -d ${MAIL_ACCOUNT_STORAGE_DIR} ]]
    do
      _log 'info' "Waiting for dovecot to create '${MAIL_ACCOUNT_STORAGE_DIR}'"
      sleep 1
    done
  fi
}

_main "${@}"