improved install script

install

@@ -1,11 +1,25 @@
 #! /usr/bin/env sh
 
-mkdir -p /etc/sitegen
-mkdir -p ~/.sitegen/hooks.d
-cp -r sitegen /etc/
-cp sitegen.sh /usr/local/bin/sitegen
-cp sitegen.completion /etc/bash_completion.d/sitegen
-
-cp generate-ssl-cert.sh /usr/local/bin/generate-ssl-cert
-cp cert-check.sh /usr/local/bin/cert-check
-cp cert-renew-all.sh /usr/local/bin/cert-renew-all
+dir="$(dirname $(readlink -f "${0}"))"
+
+if [ ! -e /etc/sitegen ]
+then
+  cp -r "${dir}/sitegen" /etc/sitegen
+fi &&
+
+cp "${dir}/sitegen.sh" /usr/local/bin/sitegen &&
+cp "${dir}/sitegen.completion" /etc/bash_completion.d/sitegen &&
+
+cp "${dir}/generate-ssl-cert.sh" /usr/local/bin/generate-ssl-cert &&
+cp "${dir}/cert-check.sh" /usr/local/bin/cert-check &&
+cp "${dir}/cert-renew-all.sh" /usr/local/bin/cert-renew-all &&
+
+cp "${dir}/apache/letsencrypt.conf" /etc/apache/conf-available/letsencrypt.conf &&
+a2enmod letsencrypt &&
+service apache2 reload &&
+
+if [ ! -e /etc/cron.d/cert-renew ]
+then
+  echo '12 00  * * 1   root    cert-renew-all /etc/ssl/private $((60 * 60 * 24 * 31))' > /etc/cron.d/cert-renew
+fi &&
+service cron reload