Use ynh helpers for error handling

Instead of doing it by hand.

Also we now rely on the fact ynh automatically runs uninstall script if the
install fails. So no more need for manual cleanup.

scripts/backup

@@ -1,9 +1,10 @@
 #!/bin/bash
-set -eu
 
 # Source YunoHost helpers
 source /usr/share/yunohost/helpers
 
+ynh_abort_if_errors
+
 # Get multi-instances specific variables
 app=$YNH_APP_INSTANCE_NAME
 

scripts/install

@@ -1,5 +1,4 @@
 #!/bin/bash
-set -eu
 
 # Source YunoHost helpers
 source /usr/share/yunohost/helpers
@@ -25,29 +24,15 @@ db_user=ihatemoney
 secret_key=`openssl rand -base64 32`
 mails_sender="no-reply@${domain}"
 
+
+ynh_abort_if_errors
+
 ynh_webpath_register $app $domain $path
 
 # Configure database
 ynh_mysql_create_db "$db_name" "$db_user" "$db_pwd"
 ynh_app_setting_set $app mysqlpwd $db_pwd
 
-# Delete db, user dirs and conf if exit with an error
-# inspired from https://github.com/Kloadut/owncloud_ynh/blob/master/scripts/install#L37
-
-function exit_properly
-{
-    set +e
-    ynh_mysql_drop_db $db_name
-    ynh_mysql_drop_user $db_user
-    sudo userdel ihatemoney
-    sudo rm -Rf /opt/yunohost/ihatemoney
-    sudo rm -Rf /etc/ihatemoney
-    sudo rm /etc/nginx/conf.d/$domain.d/ihatemoney.conf
-    sudo rm /etc/supervisor/conf.d/ihatemoney.conf
-    ynh_die "Install script failed, aborted and rolled back the installation"
-}
-trap exit_properly ERR
-
 # Save app settings
 ynh_app_setting_set $app domain $domain
 ynh_app_setting_set $app is_public "$is_public"

scripts/remove

@@ -1,5 +1,4 @@
 #!/bin/bash
-set -u
 
 # Source YunoHost helpers
 source /usr/share/yunohost/helpers

scripts/restore

@@ -1,5 +1,4 @@
 #!/bin/bash
-set -eu
 
 # Source app helpers
 source /usr/share/yunohost/helpers
@@ -26,6 +25,7 @@ fi
 
 source _common.sh
 
+ynh_abort_if_errors
 
 ynh_webpath_register $app $domain $path
 

scripts/upgrade

@@ -1,5 +1,4 @@
 #!/bin/bash
-set -eu
 app=$YNH_APP_INSTANCE_NAME
 
 
@@ -23,17 +22,14 @@ VENV_PY_VERSION=$(echo ${INSTALL_DIR}/venv/bin/python*.*|sed 's/.*python//')
 # Source local utils
 source _common.sh
 
-function exit_properly () {
-    set +e
-    # Revert to the old venv
+ynh_clean_setup () {
     if [ -e /opt/yunohost/ihatemoney/venv-old ]
     then
         sudo mv /opt/yunohost/ihatemoney/venv{-old,}
     fi
-    ynh_die "Upgrade script failed, aborted and rolled back the installation"
 }
-trap exit_properly ERR
 
+ynh_abort_if_errors
 
 
 #----------------------------PRE-UPGRADE MIGRATIONS-----------------------