#!/bin/sh

set -e

exit1() (
	echo >&2 "ERROR: $1"
	exit 1
)

warn() (
	echo >&2 "WARNING: $1"
)

info() (
	echo >&2 "INFO: $1"
)

for user in $@; do
	home=$(getent passwd "$user" | cut -d: -f6)
	if [ -z "$home" ]; then
		warn "Skipping user $user: failed resolving homedir"
	elif [ -e "$home/.forward" ]; then
		warn "Skipping user $user: Email gets forwarded"
	elif [ ! -d "$home/Maildir" ]; then
		warn "Skipping user $user: Missing Maildir"
	elif untouchedinbox "$home" || untouchednewmail "$home"; then
		localrmaccount "$user"
	elif untouchedinbox "$home" || untouchednewmail "$home"; then
		localrmaccount "$user"
	elif find "$home/Maildir/new" -maxdepth 0 -type d -mtime +365 | grep -q .; then
		info "Removing user $user: Maildir INBOX/new untouched for a year"
		localrmaccount "$user"
	elif find "$home/Maildir/cur" -maxdepth 0 -type d -mtime +365 | grep -q .; then
		info "Removing user $user: Maildir INBOX/cur untouched for a year"
		localrmaccount "$user"
	elif find "$home/Maildir/new" -type f -mtime +365 | grep -q .; then
		info "Removing user $user: new mail in INBOX untouched for a year"
		localrmaccount "$user"
	else
		info "Skipping user $user"
	fi
done