diff --git a/scripts/install b/scripts/install
index 0026e8e..c8cf916 100644
--- a/scripts/install
+++ b/scripts/install
@@ -33,45 +33,67 @@ script_dir=$PWD
 #=================================================
 # CHECK IF THE APP CAN BE INSTALLED WITH THIS ARGS
 #=================================================
+ynh_script_progression --message="Validating installation parameters..." --time --weight=1
 
-if sudo yunohost domain list | grep -q $domain	# Vérifie la liste des domaines
-then	# Si le domaine existe dans Yunohost
-	if sudo yunohost app map | grep -q $domain	# Vérifie la liste des apps par domaine
-	then 	# Si une app est installée sur ce domaine.
-		WARNING echo "An app is already installed on the domain $domain. Mypads needs a whole domain or subdomain to himself."
-	fi
-fi
+final_path=/var/www/$app
+test ! -e "$final_path" || ynh_die --message="This path already contains a folder"
+
+# Register (book) web path
+ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url
 
 #=================================================
 # STORE SETTINGS FROM MANIFEST
 #=================================================
 
-ynh_app_setting_set $app domain $domain
-ynh_app_setting_set $app is_public $is_public
+ynh_app_setting_set --app=$app --key=domain --value=$domain
+ynh_app_setting_set --app=$app --key=path --value=$path_url
+ynh_app_setting_set --app=$app --key=is_public --value=$is_public
 
 #=================================================
 # STANDARD MODIFICATIONS
 #=================================================
 # FIND AND OPEN A PORT
 #=================================================
+ynh_script_progression --message="Configuring firewall..." --weight=1
 
-port=$(ynh_find_port 4000)	# Cherche un port libre.
-ynh_app_setting_set $app port $port
-
+# Find an available port
+port=$(ynh_find_port --port=4000)
+ynh_app_setting_set --app=$app --key=port --value=$port
 #=================================================
 # INSTALL NODEJS
 #=================================================
+ynh_script_progression --message="Installing dependencies..." --weight=5
 
 ynh_install_app_dependencies $pkg_dependencies
 
 ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version
 
+#=================================================
+# DOWNLOAD, CHECK AND UNPACK SOURCE
+#=================================================
+ynh_script_progression --message="Setting up source files..." --weight=5
+
+ynh_app_setting_set --app=$app --key=final_path --value=$final_path
+# Download, check integrity, uncompress and patch the source from app.src
+ynh_setup_source --dest_dir="$final_path"
+
+#=================================================
+# NGINX CONFIGURATION
+#=================================================
+ynh_script_progression --message="Configuring NGINX web server..." --weight=1
+
+### `ynh_add_nginx_config` will use the file conf/nginx.conf
+
+# Create a dedicated NGINX config
+ynh_add_nginx_config
 
 #=================================================
 # CREATE DEDICATED USER
 #=================================================
+ynh_script_progression --message="Configuring system user..." --time --weight=1
 
-ynh_system_user_create $app /home/$app	# Créer un utilisateur système dédié à l'app
+# Create a system user
+ynh_system_user_create --username=$app
 
 #=================================================
 # SPECIFIC SETUP
@@ -94,21 +116,9 @@ ynh_use_logrotate
 # Copy files to the right place
 #=================================================
 
-final_path=/var/www/$app
-ynh_app_setting_set $app final_path $final_path
-ynh_setup_source $final_path
-
 # Files owned by root, www-data can just read
-chown www-data:www-data $final_path -R
-chmod 755 $final_path -R
-
-#=================================================
-# NGINX CONFIGURATION
-#=================================================
-ynh_script_progression --message="Configuring NGINX web server..." --weight=2
-
-# Create a dedicated NGINX config
-ynh_add_nginx_config
+chown -R www-data: $final_path 
+chmod -R 755 $final_path
 
 #=================================================
 # SETUP SYSTEMD
@@ -134,7 +144,6 @@ popd
 #=================================================
 
 service redis-server start
-yunohost firewall allow Both $port
 
 #=================================================
 # Configure init script