#!/bin/bash

CURDIR=$(dirname "$(readlink -f "$0")")
source "$CURDIR"/shared-functions.so

# MAIL QUEUE ACTIONS
function send_mailqueue {   # send queued mails
  $MSMTP_LIST
  read -p "Send these queued mails? [Y/n]: " YN
  if [[ $YN =~ ^(Y|y|)$ ]]; then
    $MSMTP_RUN
  else
    echo "Not sending emails"
  fi
}
function list_mailqueue {   # list emails in queue only
  $MSMTP_LIST
}

# CHANGE ONLINE STATUS
function switch_conn {
  echo "Current connection status: $var_conn"
  read -p "Switch connection status? [Y/n]: " YN
  if [[ $YN =~ ^(Y|y|)$ ]]; then
    if [ "$var_conn" == "off" ]; then
      var_conn="on"
      echo "Connection status switched to \"on\""
    else
      var_conn="off"
      echo "Connection status switched to \"off\""
    fi
  else
    echo "Connection status not changed."
  fi
}

# OPTION SCREEN
function exec {
  ACTIONS=("send mails in queue" "list mails in queue" "switch connection status [$var_conn]" "quit")
  PS3="Select action: "
  
  select action in "${ACTIONS[@]}"
  do
    echo  # empty line after selection
    case $REPLY in  # $REPLY takes the numbers which is nice
      1) # Show queue; ask for confirmation; if yes, send emails
      send_mailqueue
      break ;;
      2) # Show queue
      list_mailqueue
      break ;;
      3) # Switch online status
      switch_conn
      break ;;
      4|"q") # exit silently, one can also press "q" instead of the number
      exit 0
      break ;;
    esac
  done
}

while :; do             # endless loop
  exec                  # interaction screen
  wtmp; source "$TMP"   # write changes back and load them
  echo                  # empty line
done