borgserver_ynh/scripts/upgrade

#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source _common.sh
source /usr/share/yunohost/helpers

#=================================================
# LOAD SETTINGS
#=================================================

app=$YNH_APP_INSTANCE_NAME
ssh_user=$(ynh_app_setting_get --app=$app --key=ssh_user)

#=================================================
# CHECK IF AN UPGRADE IS NEEDED
#=================================================
ynh_check_app_version_changed

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
	# restore it if the upgrade fails
	ynh_restore_upgradebackup
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors


#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..."

if [ -f "/etc/apt/sources.list.d/$app-stretch-backports.list" ]; then
    rm -f /etc/apt/sources.list.d/$app-stretch-backports.list
    install_borg_with_pip
fi

if [ -f "/etc/yunohost/hooks.d/backup/17-data_home" ]; then
    ynh_secure_remove /etc/yunohost/hooks.d/backup/17-data_home
fi

if echo "$ssh_user" | grep -v ' '; then
    ynh_app_setting_set --app=$app --key=ssh_user --value="$(grep -Po 'no-user-rc \K.*$' /home/$ssh_user/.ssh/authorized_keys)"
fi