# Check if we have SSL certificates in config, otherwise copy it there

# First the key file
if [ -f /mail_settings/ssl-cert-snakeoil.key ]; then
	cp /mail_settings/ssl-cert-snakeoil.key /etc/ssl/private/ssl-cert-snakeoil.key
else
	cp /etc/ssl/private/ssl-cert-snakeoil.key /mail_settings/ssl-cert-snakeoil.key
fi

# Then the pem file
if [ -f /mail_settings/ssl-cert-snakeoil.pem ]; then
	cp /mail_settings/ssl-cert-snakeoil.pem /etc/ssl/certs/ssl-cert-snakeoil.pem
else
	cp /etc/ssl/certs/ssl-cert-snakeoil.pem /mail_settings/ssl-cert-snakeoil.pem
fi


# Update hostname if given
if [ -f /mail_settings/myhostname ]; then
	sed -i -e "s/myhostname = localhost/myhostname = $(sed 's:/:\\/:g' /mail_settings/myhostname)/" /etc/postfix/main.cf
	echo $(sed 's:/:\\/:g' /mail_settings/myhostname) > /etc/mailname
fi

# Configure mail delivery to dovecot
cp /mail_settings/aliases /etc/postfix/virtual
cp /mail_settings/domains /etc/postfix/virtual-mailbox-domains

# Parse mailbox settings
mkdir /etc/postfix/tmp
awk < /etc/postfix/virtual '{ print $2 }' > /etc/postfix/tmp/virtual-receivers
sed -r 's,(.+)@(.+),\2/\1/,' /etc/postfix/tmp/virtual-receivers > /etc/postfix/tmp/virtual-receiver-folders
paste /etc/postfix/tmp/virtual-receivers /etc/postfix/tmp/virtual-receiver-folders > /etc/postfix/virtual-mailbox-maps

# Give postfix ownership of its files
chown -R postfix:postfix /etc/postfix

# Map virtual aliases and user/filesystem mappings
postmap /etc/postfix/virtual
postmap /etc/postfix/virtual-mailbox-maps
chown -R postfix:postfix /etc/postfix

# Make user vmail own all mail folders
chown -R vmail:vmail /vmail
chmod u+w /vmail

# Add password file
cp /mail_settings/passwords /etc/dovecot/passwd


# OpenDKIM config
POSTFIX_MAIN_CF=/etc/postfix/main.cf
if [ -z "$OPEN_DKIM" ]; then
	# Add config block if not present already
	if grep -q "# OpenDKIM - dockermail" "$POSTFIX_MAIN_CF"; then
		echo "# OpenDKIM - dockermail" >> "$POSTFIX_MAIN_CF"
		echo "milter_default_action = accept" >> "$POSTFIX_MAIN_CF"
		echo "milter_protocol = 2" >> "$POSTFIX_MAIN_CF"
		echo "smtpd_milters = $OPEN_DKIM_PORT_8891_ADDR" >> "$POSTFIX_MAIN_CF"
		echo "non_smtpd_milters = $OPEN_DKIM_PORT_8891_ADDR" >> "$POSTFIX_MAIN_CF"
		echo "# OpenDKIM - dockermail - end" >> "$POSTFIX_MAIN_CF"
	fi
else
	# Remove OpenDKIM block
	sed '/# OpenDKIM - dockermail/,/# OpenDKIM - dockermail - end/d' "$POSTFIX_MAIN_CF"
fi