Add upgrade script

scripts/upgrade

@@ -0,0 +1,52 @@
+#!/bin/bash
+
+APP=piratebox
+OWNER=labriqueinternet
+SERVICE="ynh-${APP}"
+REPO="${APP}_ynh"
+
+ARGS='domain path opt_domain opt_name opt_deleting opt_renaming opt_chat'
+
+install_time=$(sudo yunohost app setting "${APP}" install_time)
+install_isotime=$(date -Iseconds --date="@${install_time}")
+
+commits=$(sudo curl -s "https://api.github.com/repos/${OWNER}/${REPO}/commits?since=${install_isotime}" | wc -l)
+commits_upstream=$(sudo curl -s "https://api.github.com/repos/jvaubourg/php-piratebox/commits?since=${install_isotime}" | wc -l)
+
+if [ "${commits}" -le 3 -a "${commits_upstream}" -le 3 ]; then
+  echo "${APP}: Up-to-date"
+  exit 0
+fi
+
+for i in ${ARGS}; do
+  value=$(sudo yunohost app setting "${APP}" "${i}")
+  value=$(php -r "echo rawurlencode('$value');")
+
+  args_url="${args_url}&${i}=${value}"
+done
+
+tmpdir=$(mktemp -dp /tmp/ "${APP}-upgrade-XXXXX")
+tmpdir_uploads=$(mktemp -dp /var/www/ "${APP}-upgrade-XXXXX")
+
+sudo systemctl stop "${SERVICE}"
+
+sudo cp -a "/etc/yunohost/apps/${APP}/settings.yml" "${tmpdir}/"
+sudo mv /var/www/piratebox/public/uploads/ "${tmpdir_uploads}/"
+
+sudo yunohost app remove "${APP}"
+sudo yunohost app install "https://github.com/${OWNER}/${REPO}" --args "${args_url}"
+
+sudo systemctl stop "${SERVICE}"
+
+install_time=$(sudo yunohost app setting "${APP}" install_time)
+
+sudo cp -a "${tmpdir}/settings.yml" "/etc/yunohost/apps/${APP}/"
+sudo mv "${tmpdir_uploads}/uploads/"* /var/www/piratebox/public/uploads/ 2> /dev/null
+
+sudo yunohost app setting "${APP}" install_time -v "${install_time}"
+
+sudo systemctl start "${SERVICE}"
+
+sudo rm -r "${tmpdir}/" "${tmpdir_uploads}/"
+
+exit 0