diff --git a/check_process b/check_process
new file mode 100644
index 0000000..f44a27d
--- /dev/null
+++ b/check_process
@@ -0,0 +1,43 @@
+# See here for more informations
+# https://github.com/YunoHost/package_check#syntax-check_process-file
+
+# Move this file from check_process.default to check_process when you have filled it.
+
+;; Test complet
+	; Manifest
+		domain="domain.tld"	(DOMAIN)
+		path="/"	(PATH)
+		admin="john"	(USER)
+		language="fr"
+		is_public=1	(PUBLIC|public=1|private=0)
+		password="pass"
+		port="666"	(PORT)
+	; Checks
+		pkg_linter=1
+		setup_sub_dir=0
+		setup_root=1
+		setup_nourl=0
+		setup_private=1
+		setup_public=1
+		upgrade=1
+		backup_restore=1
+		multi_instance=1
+		incorrect_path=1
+		port_already_use=0
+		change_url=0
+;;; Levels
+	Level 1=auto
+	Level 2=auto
+	Level 3=auto
+# Level 4: 
+	Level 4=0
+# Level 5: 
+	Level 5=auto
+	Level 6=auto
+	Level 7=auto
+	Level 8=0
+	Level 9=0
+	Level 10=0
+;;; Options
+Email=
+Notification=none
diff --git a/conf/app.src b/conf/app.src
new file mode 100644
index 0000000..5b0660a
--- /dev/null
+++ b/conf/app.src
@@ -0,0 +1,6 @@
+SOURCE_URL=https://github.com/seejohnrun/haste-server/archive/f19c5d10498e214b8323fff9e5eab77cbb7eebff.tar.gz
+SOURCE_SUM=6e67fd09bc7782d23d612c209a2de39212682239018a1bd2618c120f9cc36a47
+SOURCE_SUM_PRG=sha256sum
+SOURCE_FORMAT=tar.gz
+SOURCE_IN_SUBDIR=true
+SOURCE_FILENAME=
diff --git a/conf/config.js b/conf/config.js
index 00e98c5..226bf72 100644
--- a/conf/config.js
+++ b/conf/config.js
@@ -1,7 +1,7 @@
 {
 
   "host": "127.0.0.1",
-  "port": 7777,
+  "port": __PORT__,
 
   "keyLength": 10,
 
@@ -10,14 +10,14 @@
   "staticMaxAge": 86400,
 
   "recompressStaticAssets": true,
-
+    
   "logging": [
     {
-      "level": "info",
+      "level": "verbose",
       "type": "Console",
       "colorize": true
     }
-  ],
+],
 
   "keyGenerator": {
     "type": "phonetic"
@@ -35,7 +35,7 @@
   "storage": {
     "type": "file",
     "file": "YNH_DATA_PATH"
-  },
+},
 
   "documents": {
     "about": "./about.md"
diff --git a/conf/nginx.conf b/conf/nginx.conf
index 8c68c6e..aa601d9 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -1,5 +1,5 @@
 location / {
-    proxy_pass                  http://localhost:7777/;
+    proxy_pass                  http://localhost:__PORT__;
     proxy_set_header            Host $host;
     proxy_buffering off;
     fastcgi_param REMOTE_USER   $remote_user;
diff --git a/conf/haste.service b/conf/systemd.service
similarity index 51%
rename from conf/haste.service
rename to conf/systemd.service
index 136d796..8d92c8b 100644
--- a/conf/haste.service
+++ b/conf/systemd.service
@@ -5,12 +5,13 @@ After=network.target
 
 [Service]
 Type=simple
-User=haste
-Group=haste
-WorkingDirectory=/opt/haste
-ExecStart=/usr/bin/npm start
+User=__APP__
+Group=__APP__
+ExecStartPre=__NODEJS__
+WorkingDirectory=__FINALPATH__
+Environment="PATH=__ENV_PATH__"
+ExecStart=/opt/node_n/n/versions/node/4/bin/npm start
 Restart=always
-Environment=USER=haste HOME=/opt/haste
 
 [Install]
 WantedBy=multi-user.target
diff --git a/manifest.json b/manifest.json
index 188a1ff..306ddff 100644
--- a/manifest.json
+++ b/manifest.json
@@ -7,14 +7,14 @@
         "fr": "Haste is an open-source pastebin software written in node.js"
     },
     "url": "https://github.com/seejohnrun/haste-server",
-    "license": "free",
+    "license": "MIT",
     "maintainer": {
         "name": "mbugeia",
         "email": "maxime.bugeia@gmail.com",
         "url": "https://github.com/YunoHost-Apps/haste_ynh"
     },
     "requirements": {
-        "yunohost": ">> 2.4.0"
+        "yunohost": ">= 2.7.2"
     },
     "multi_instance": false,
     "services": [
diff --git a/scripts/_common.sh b/scripts/_common.sh
index b199e56..3234d4a 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -1,107 +1,160 @@
-#
-# Common variables
-#
+#!/bin/bash
+# INFOS
+# n (Node version management) utilise la variable PATH pour stocker le path de la version de node à utiliser.
+# C'est ainsi qu'il change de version
+# ynh_install_nodejs installe la version de nodejs demandée en argument, avec n
+# ynh_use_nodejs active une version de nodejs dans le script courant
+# 3 variables sont mises à disposition, et 2 sont stockées dans la config de l'app
+# - nodejs_path: Le chemin absolu de cette version de node
+# Utilisé pour des appels directs à node.
+# - nodejs_version: Simplement le numéro de version de nodejs pour cette application
+# - nodejs_use_version: Un alias pour charger une version de node dans le shell courant.
+# Utilisé pour démarrer un service ou un script qui utilise node ou npm
+# Dans ce cas, c'est $PATH qui contient le chemin de la version de node. Il doit être propagé sur les autres shell si nécessaire.
 
-APPNAME="haste"
-app=${YNH_APP_INSTANCE_NAME:-haste}
+n_install_dir="/opt/node_n"
+node_version_path="/opt/node_n/n/versions/node"
+# N_PREFIX est le dossier de n, il doit être chargé dans les variables d'environnement pour n.
+export N_PREFIX="$n_install_dir"
 
-# Haste version
-VERSION="master"
+ynh_use_nodejs () {
+	nodejs_version=$(ynh_app_setting_get $app nodejs_version)
 
-# set globals variables
-DESTDIR="/opt/"${app}
-DATA_PATH="/home/yunohost.app/"$app
+	load_n_path="[[ :$PATH: == *\":$n_install_dir/bin:\"* ]] || PATH=\"$n_install_dir/bin:$PATH\"; N_PREFIX="$n_install_dir""
 
-# Remote URL to fetch Haste tarball
-HASTE_URL="https://github.com/seejohnrun/haste-server/archive/"${VERSION}".zip"
+	nodejs_use_version="$n_install_dir/bin/n -q $nodejs_version"
 
-# Source YunoHost helpers
-source /usr/share/yunohost/helpers
+	# "Load" a version of node
+	eval $load_n_path; $nodejs_use_version
 
-#
-# Common helpers
-#
+	# Get the absolute path of this version of node
+	nodejs_path="$(n bin $nodejs_version)"
 
-check_or_install_npm() {
-  if ! dpkg -s npm | grep "installed" > /dev/null 2>&1 \
-       || ! dpkg -s nodejs-legacy | grep "installed" > /dev/null 2>&1; then
-    sudo apt-get update
-    sudo apt-get install -y npm nodejs-legacy
-  fi
+	# Make an alias for node use
+	ynh_node_exec="eval $load_n_path; n use $nodejs_version"
 }
 
-pre_inst_haste() {
-  # retrieve, extract, copy haste, add user if necessary
-  local TMPDIR=$(mktemp -d)
-  local HASTE_SOURCE=$1
+ynh_install_nodejs () {
+	# Use n, https://github.com/tj/n to manage the nodejs versions
+	nodejs_version="$1"
+	local n_install_script="https://git.io/n-install"
 
-  haste_tarball="/tmp/haste.zip"
-  rm -f "$haste_tarball"
-  if [ "$HASTE_SOURCE" = "backup" ]
-  then
-    # Restore the app and data files
-    sudo cp -a ./www "$DESTDIR"
-    sudo cp -a ./data/. "$DATA_PATH"
-    # Restore directories and permissions
-    sudo chown -R "$app":"$app" "$DESTDIR" "$DATA_PATH"
-  else
-    wget -q -O "$haste_tarball" "$HASTE_URL" \
-      || ynh_die "Unable to download haste"
-    unzip -q "$haste_tarball" -d "$TMPDIR" \
-      || ynh_die "Unable to extract haste"
-    sudo rsync -a "$TMPDIR"/haste-server-master/* "$DESTDIR"
-  fi
-  rm -rf "$haste_tarball" "$TMPDIR"
+	# Create $n_install_dir
+	mkdir -p "$n_install_dir"
 
-  # Add user if not exist
-  id -g "$app" &>/dev/null || sudo addgroup "$app" --system --quiet
-  id -u "$app" &>/dev/null || sudo adduser "$app" \
-      --ingroup "$app" --system --quiet --shell /bin/bash
+	# Load n path in PATH
+	CLEAR_PATH="$n_install_dir/bin:$PATH"
+	# Remove /usr/local/bin in PATH in case of node has already setup.
+	PATH=$(echo $CLEAR_PATH | sed 's@/usr/local/bin:@@')
 
-  # Configure init script
-  sudo cp ../conf/"$app".service /etc/systemd/system/
-  sudo systemctl daemon-reload
-  sudo systemctl enable "$app".service
-  }
+	# Move an existing node binary, to avoid to block n.
+	test -x /usr/bin/node && mv /usr/bin/node /usr/bin/node_n
+	test -x /usr/bin/npm && mv /usr/bin/npm /usr/bin/npm_n
 
-# Download, extract and install Haste to the given directory
-# usage: install_haste DESTDIR
-install_haste() {
-  local DOMAIN=$1
-  local YNH_PATH=$2
-  local IS_PUBLIC=$3
+	# If n is not previously setup, install it
+	n --version > /dev/null 2>&1 || \
+	( echo "Installation of N - Node.js version management" >&2; \
+	curl -sL $n_install_script | N_PREFIX=$N_PREFIX bash -s -- -y - 2>&1 )
 
-  check_or_install_npm
-  pre_inst_haste none
+	# Modify the default N_PREFIX in n script
+	ynh_replace_string "^N_PREFIX=\${N_PREFIX-.*}$" "N_PREFIX=\${N_PREFIX-$N_PREFIX}" "$n_install_dir/bin/n"
 
-	# install haste
-	current_dir=$(pwd)
-	cd "$DESTDIR"
-	sudo npm install
-	cd $current_dir
+	# Restore /usr/local/bin in PATH
+	PATH=$CLEAR_PATH
 
-  sudo mkdir -p $DATA_PATH
-  sudo chown -R "$app":"$app" $DESTDIR $DATA_PATH
+	# And replace the old node binary.
+	test -x /usr/bin/node_n && mv /usr/bin/node_n /usr/bin/node
+	test -x /usr/bin/npm_n && mv /usr/bin/npm_n /usr/bin/npm
 
-  # Configure haste with config.js file
-  sudo cp ../conf/config.js "$DESTDIR"/config.js
-  sudo sed -i "s@YNH_DATA_PATH@$DATA_PATH@g" "$DESTDIR"/config.js
+	# Install the requested version of nodejs
+	n $nodejs_version
 
-  # Modify Nginx configuration file and copy it to Nginx conf directory
-  sed -i "s@PATHTOCHANGE@${YNH_PATH%/}@g" ../conf/nginx.conf
-  sudo cp ../conf/nginx.conf /etc/nginx/conf.d/$domain.d/"$app".conf
+	# Find the last "real" version for this major version of node.
+	real_nodejs_version=$(find $node_version_path/$nodejs_version* -maxdepth 0 | sort --version-sort | tail --lines=1)
+	real_nodejs_version=$(basename $real_nodejs_version)
 
-  # If app is public, add url to SSOWat conf as skipped_uris
-  if [[ $IS_PUBLIC -eq 1 ]]; then
-    # unprotected_uris allows SSO credentials to be passed anyway.
-    ynh_app_setting_set "$app" unprotected_uris "/"
-  fi
+	# Create a symbolic link for this major version. If the file doesn't already exist
+	if [ ! -e "$node_version_path/$nodejs_version" ]
+	then
+		ln --symbolic --force --no-target-directory $node_version_path/$real_nodejs_version $node_version_path/$nodejs_version
+	fi
 
-  # Reload services
-  sudo systemctl reload nginx.service
+	# Store the ID of this app and the version of node requested for it
+	echo "$YNH_APP_ID:$nodejs_version" | tee --append "$n_install_dir/ynh_app_version"
 
-  # install haste cli client
-  sed -i "s@YNH_HASTE_URL@${DOMAIN}${path%/}@g" ../conf/haste.sh
-  sudo cp ../conf/haste.sh /usr/bin/"$app"
-  sudo chmod +x /usr/bin/"$app"
+	# Store nodejs_version into the config of this app
+	ynh_app_setting_set $app nodejs_version $nodejs_version
+
+	# Build the update script and set the cronjob
+	ynh_cron_upgrade_node
+
+	ynh_use_nodejs
+}
+
+ynh_remove_nodejs () {
+	ynh_use_nodejs
+
+	# Remove the line for this app
+	sed --in-place "/$YNH_APP_ID:$nodejs_version/d" "$n_install_dir/ynh_app_version"
+
+	# If none another app uses this version of nodejs, remove it.
+	if ! grep --quiet "$nodejs_version" "$n_install_dir/ynh_app_version"
+	then
+		n rm $nodejs_version
+	fi
+
+	# If none another app uses n, remove n
+	if [ ! -s "$n_install_dir/ynh_app_version" ]
+	then
+		ynh_secure_remove "$n_install_dir"
+		ynh_secure_remove "/usr/local/n"
+		sed --in-place "/N_PREFIX/d" /root/.bashrc
+	fi
+}
+
+ynh_cron_upgrade_node () {
+	# Build the update script
+	cat > "$n_install_dir/node_update.sh" << EOF
+#!/bin/bash
+
+version_path="$node_version_path"
+n_install_dir="$n_install_dir"
+
+# Log the date
+date
+
+# List all real installed version of node
+all_real_version="\$(find \$version_path/* -maxdepth 0 -type d | sed "s@\$version_path/@@g")"
+
+# Keep only the major version number of each line
+all_real_version=\$(echo "\$all_real_version" | sed 's/\..*\$//')
+
+# Remove double entries
+all_real_version=\$(echo "\$all_real_version" | sort --unique)
+
+# Read each major version
+while read version
+do
+	echo "Update of the version \$version"
+	sudo \$n_install_dir/bin/n \$version
+
+	# Find the last "real" version for this major version of node.
+	real_nodejs_version=\$(find \$version_path/\$version* -maxdepth 0 | sort --version-sort | tail --lines=1)
+	real_nodejs_version=\$(basename \$real_nodejs_version)
+
+	# Update the symbolic link for this version
+	sudo ln --symbolic --force --no-target-directory \$version_path/\$real_nodejs_version \$version_path/\$version
+done <<< "\$(echo "\$all_real_version")"
+EOF
+
+	chmod +x "$n_install_dir/node_update.sh"
+
+	# Build the cronjob
+	cat > "/etc/cron.daily/node_update" << EOF
+#!/bin/bash
+
+$n_install_dir/node_update.sh >> $n_install_dir/node_update.log
+EOF
+
+	chmod +x "/etc/cron.daily/node_update"
 }
diff --git a/scripts/backup b/scripts/backup
index e5071aa..ea25bb2 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -1,22 +1,61 @@
 #!/bin/bash
 
-# Exit on command errors and treat unset variables as an error
-set -eu
+#=================================================
+# GENERIC START
+#=================================================
+# IMPORT GENERIC HELPERS
+#=================================================
 
-# Load common variables and functions
-source ./_common.sh
+if [ ! -e _common.sh ]; then
+	# Get the _common.sh file if it's not in the current directory
+	cp ../settings/scripts/_common.sh ./_common.sh
+	chmod a+rx _common.sh
+fi
+source _common.sh
+source /usr/share/yunohost/helpers
 
-domain=$(ynh_app_setting_get "$app" domain)
+#=================================================
+# MANAGE SCRIPT FAILURE
+#=================================================
 
-# Copy the app source and data files
-ynh_backup "$DESTDIR" "www"
-ynh_backup "$DATA_PATH" "data"
+# Exit if an error occurs during the execution of the script
+ynh_abort_if_errors
 
-# Copy the conf files
-mkdir ./conf
-ynh_backup "/etc/nginx/conf.d/${domain}.d/${app}.conf" "conf/nginx.conf"
-ynh_backup "/etc/systemd/system/${app}.service" "conf/systemd.service"
-ynh_backup "/usr/bin/${app}" "conf/haste.sh"
+#=================================================
+# LOAD SETTINGS
+#=================================================
+
+app=$YNH_APP_INSTANCE_NAME
+
+final_path=$(ynh_app_setting_get $app final_path)
+domain=$(ynh_app_setting_get $app domain)
+db_name=$(ynh_app_setting_get $app db_name)
+
+#=================================================
+# STANDARD BACKUP STEPS
+#=================================================
+# BACKUP THE APP MAIN DIR
+#=================================================
+
+ynh_backup "$final_path"
+
+#=================================================
+# BACKUP THE NGINX CONFIGURATION
+#=================================================
+
+ynh_backup "/etc/nginx/conf.d/$domain.d/$app.conf"
+
+#=================================================
+# SPECIFIC BACKUP
+#=================================================
+# BACKUP LOGROTATE
+#=================================================
+
+ynh_backup "/etc/logrotate.d/$app"
+
+#=================================================
+# BACKUP SYSTEMD
+#=================================================
+
+ynh_backup "/etc/systemd/system/$app.service"
 
-# Copy NGINX configuration
-ynh_backup "/etc/nginx/conf.d/${domain}.d/${app}.conf" "nginx.conf"
diff --git a/scripts/install b/scripts/install
index 7c1953b..f1a3baf 100755
--- a/scripts/install
+++ b/scripts/install
@@ -1,33 +1,160 @@
 #!/bin/bash
 
-# Exit on command errors and treat unset variables as an error
-set -eu
+#=================================================
+# GENERIC STARTING
+#=================================================
+# IMPORT GENERIC HELPERS
+#=================================================
 
-# Load common variables and functions
-source ./_common.sh
+source _common.sh
+source /usr/share/yunohost/helpers
+
+#=================================================
+# MANAGE FAILURE OF THE SCRIPT
+#=================================================
+
+ynh_abort_if_errors # Active trap pour arrêter le script si une erreur est détectée.
+
+#=================================================
+# RETRIEVE ARGUMENTS FROM THE MANIFEST
+#=================================================
 
-# Retrieve arguments
 domain=$YNH_APP_ARG_DOMAIN
-path=$YNH_APP_ARG_PATH
+path_url=$YNH_APP_ARG_PATH
 is_public=$YNH_APP_ARG_IS_PUBLIC
 
-# Check domain/path availability
-sudo yunohost app checkurl "${domain}${path}" -a "$app" \
-    || ynh_die "Path not available: ${domain}${path}"
+app=$YNH_APP_INSTANCE_NAME
 
-if ! [ "$path" = "/" ]
+#=================================================
+# CHECK IF THE APP CAN BE INSTALLED WITH THIS ARGS
+#=================================================
+
+final_path=/var/www/$app
+test ! -e "$final_path" || ynh_die "This path already contains a folder"
+
+# Normalize the url path syntax
+path_url=$(ynh_normalize_url_path $path_url)
+
+# Check web path availability
+ynh_webpath_available $domain $path_url
+# Register (book) web path
+ynh_webpath_register $app $domain $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 $app path_url "$path_url"
+
+#=================================================
+# STANDARD MODIFICATIONS
+#=================================================
+# FIND AND OPEN A PORT
+#=================================================
+
+# Find a free port
+port=$(ynh_find_port 7777)
+# Open this port
+yunohost firewall allow --no-upnp TCP $port 2>&1
+ynh_app_setting_set $app port $port
+#=================================================
+# INSTALL NODEJS
+#=================================================
+
+ynh_install_nodejs 4 
+#=================================================
+# CREATE DEDICATED USER
+#=================================================
+
+ynh_system_user_create $app
+
+#=================================================
+# SPECIFIC SETUP
+#=================================================
+# HANDLE LOG FILES AND LOGROTATE
+#=================================================
+
+# Créer le dossier de log
+mkdir -p /var/log/$app
+touch /var/log/$app/$app.log
+chown $app -R /var/log/$app
+
+# Setup logrotate
+ynh_use_logrotate
+
+
+#=================================================
+# DOWNLOAD, CHECK AND UNPACK SOURCE
+#=================================================
+
+final_path=/var/www/$app
+ynh_app_setting_set $app final_path $final_path
+ynh_setup_source $final_path
+
+# Set files ownership during installation
+chown $app: $final_path -R
+chmod 755 $final_path -R
+
+#=================================================
+# Modify Nginx configuration file and copy it to Nginx conf directory
+#=================================================
+
+ynh_add_nginx_config
+
+#=================================================
+# ADD SYSTEMD SERVICE
+#=================================================
+
+ynh_replace_string "__NODE__" "$nodejs_path" "../conf/systemd.service"
+ynh_replace_string "__NODEJS__" "$nodejs_use_version" "../conf/systemd.service"
+ynh_replace_string "__ENV_PATH__" "$PATH" "../conf/systemd.service"
+ynh_add_systemd_config
+
+#=================================================
+# INSTALL HASTEBIN
+#=================================================
+
+ynh_use_nodejs
+script_dir="$PWD"
+pushd "$final_path"
+chown -R $app: $final_path
+npm install
+DATA_PATH="/home/yunohost.app/"$app
+mkdir -p $DATA_PATH
+chown -R "$app":"$app" $final_path $DATA_PATH
+
+#=================================================
+# Configure haste with config.js file
+#=================================================
+
+  ynh_replace_string "YNH_DATA_PATH" "$DATA_PATH" "$final_path/config.js"
+
+#=================================================
+# ENABLE SERVICE IN ADMIN PANEL
+#=================================================
+
+# Ajoute le service au monitoring de Yunohost.
+yunohost service add $app --log "/var/log/$app/$app.log"
+
+#=================================================
+# START HASTEBIN IN BACKGROUND
+#=================================================
+
+systemctl start $app
+
+#=================================================
+# SETUP SSOWAT
+#=================================================
+
+if [ $is_public -eq 1 ];
 then
-    ynh_die "Path must be /"
+  ynh_app_setting_set "$app" unprotected_uris "/"
 fi
 
-# Save app settings
-ynh_app_setting_set "$app" is_public "$is_public"
+#=================================================
+# RELOAD NGINX
+#=================================================
 
-# Install the app
-install_haste $domain $path $is_public
-
-# Start Haste
-sudo systemctl start "$app".service
-
-# Add Haste to YunoHost's monitored services
-sudo yunohost service add "$app" --log /var/log/"$app"/"$app".log
+systemctl reload nginx
diff --git a/scripts/remove b/scripts/remove
index 7bf6d53..90f608e 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -1,33 +1,86 @@
 #!/bin/bash
 
-# Exit on command errors and treat unset variables as an error
-set -eu
+#=================================================
+# GENERIC START
+#=================================================
+# IMPORT GENERIC HELPERS
+#=================================================
 
-# Load common variables and functions
-source ./_common.sh
+source _common.sh
+source /usr/share/yunohost/helpers
 
-# Retrieve app settings
-domain=$(ynh_app_setting_get "$app" domain)
+#=================================================
+# LOAD SETTINGS
+#=================================================
 
-# Stop haste
-sudo systemctl stop "$app".service
+app=$YNH_APP_INSTANCE_NAME
 
-# Remove sources
-sudo rm -rf "/opt/"${app}
+domain=$(ynh_app_setting_get $app domain)
+port=$(ynh_app_setting_get $app port)
+db_name=$(ynh_app_setting_get $app db_name)
+final_path=$(ynh_app_setting_get $app final_path)
 
-# Remove nginx configuration file
-[[ -n $domain ]] && sudo rm -f "/etc/nginx/conf.d/${domain}.d/${app}.conf"
+#=================================================
+# STANDARD REMOVE
+#=================================================
+# STOP AND REMOVE SERVICE
+#=================================================
 
-# Remove haste user and data
-sudo userdel -r "$app"
+# Remove the dedicated systemd config
+ynh_remove_systemd_config
 
-# Remove init script
-sudo systemctl disable "$app".service
-sudo rm -f /etc/systemd/system/"$app".service
-sudo systemctl daemon-reload
+#=================================================
+# REMOVE SERVICE FROM ADMIN PANEL
+#=================================================
 
-# Remove monitor
-sudo yunohost service remove "$app"
+if yunohost service status | grep -q $app
+then
+	echo "Remove $app service"
+	yunohost service remove $app
+fi
 
-# Reload nginx service
-sudo systemctl reload nginx.service
+
+#=================================================
+# REMOVE APP MAIN DIR
+#=================================================
+
+# Remove the app directory securely
+ynh_secure_remove "$final_path"
+
+#=================================================
+# REMOVE NGINX CONFIGURATION
+#=================================================
+
+# Remove the dedicated nginx config
+ynh_remove_nginx_config
+
+
+#=================================================
+# REMOVE LOGROTATE CONFIGURATION
+#=================================================
+
+# Remove the app-specific logrotate config
+ynh_remove_logrotate
+
+#=================================================
+# CLOSE A PORT
+#=================================================
+
+if yunohost firewall list | grep -q "\- $port$"
+then
+	echo "Close port $port"
+	yunohost firewall disallow TCP $port 2>&1
+fi
+
+#=================================================
+# SPECIFIC REMOVE
+#=================================================
+
+#=================================================
+# GENERIC FINALIZATION
+#=================================================
+# REMOVE DEDICATED USER
+#=================================================
+
+# Delete a system user
+ynh_system_user_delete $app
diff --git a/scripts/restore b/scripts/restore
index 633d74b..f316133 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -1,39 +1,124 @@
+
 #!/bin/bash
 
-# Exit on command errors and treat unset variables as an error
-set -eu
+#=================================================
+# GENERIC START
+#=================================================
+# IMPORT GENERIC HELPERS
+#=================================================
 
-# Load common variables and functions
-source ./_common.sh
+if [ ! -e _common.sh ]; then
+	# Get the _common.sh file if it's not in the current directory
+	cp ../settings/scripts/_common.sh ./_common.sh
+	chmod a+rx _common.sh
+fi
+source _common.sh
+source /usr/share/yunohost/helpers
 
-# Retrieve old app settings
-domain=$(ynh_app_setting_get "$app" domain)
-path=$(ynh_app_setting_get "$app" path)
-is_public=$(ynh_app_setting_get "$app" is_public)
+#=================================================
+# MANAGE SCRIPT FAILURE
+#=================================================
 
-# Check domain/path availability
-sudo yunohost app checkurl "${domain}${path}" -a "$app" \
-    || ynh_die "Path not available: ${domain}${path}"
+# Exit if an error occurs during the execution of the script
+ynh_abort_if_errors
 
-# Check destination directory
-[[ -d $DESTDIR ]] && ynh_die \
-"The destination directory '$DESTDIR' already exists.\
- You should safely delete it before restoring this app."
+#=================================================
+# LOAD SETTINGS
+#=================================================
 
- # Check configuration files
- nginx_conf="/etc/nginx/conf.d/${domain}.d/${app}.conf"
- [[ -f $nginx_conf ]] && ynh_die \
- "The NGINX configuration already exists at '${nginx_conf}'.
- You should safely delete it before restoring this app."
+app=$YNH_APP_INSTANCE_NAME
 
-pre_inst_haste backup
+domain=$(ynh_app_setting_get $app domain)
+path_url=$(ynh_app_setting_get $app path)
+final_path=$(ynh_app_setting_get $app final_path)
+db_name=$(ynh_app_setting_get $app db_name)
 
-# Restore NGINX configuration
-sudo cp -a ./nginx.conf "/etc/nginx/conf.d/${domain}.d/${app}.conf"
+#=================================================
+# CHECK IF THE APP CAN BE RESTORED
+#=================================================
 
-# Restart webserver and app
-sudo systemctl reload nginx.service
-sudo systemctl start "$app".service
+ynh_webpath_available $domain $path_url \
+	|| ynh_die "Path not available: ${domain}${path_url}"
+test ! -d $final_path \
+	|| ynh_die "There is already a directory: $final_path "
 
-# Add Haste to YunoHost's monitored services
-sudo yunohost service add "$app" --log /var/log/"$app"/"$app".log
+#=================================================
+# STANDARD RESTORATION STEPS
+#=================================================
+# RESTORE THE NGINX CONFIGURATION
+#=================================================
+
+ynh_restore_file "/etc/nginx/conf.d/$domain.d/$app.conf"
+
+#=================================================
+# RESTORE THE APP MAIN DIR
+#=================================================
+
+ynh_restore_file "$final_path"
+
+
+#=================================================
+# RECREATE THE DEDICATED USER
+#=================================================
+
+# Create the dedicated user (if not existing)
+ynh_system_user_create $app
+
+#=================================================
+# RESTORE USER RIGHTS
+#=================================================
+
+# Restore permissions on app files
+chown -R root: $final_path
+
+
+#=================================================
+# SPECIFIC RESTORATION
+#=================================================
+ynh_install_nodejs 4
+#=================================================
+# INSTALL HASTEBIN
+#=================================================
+
+ynh_use_nodejs
+script_dir="$PWD"
+pushd "$final_path"
+chown -R $app: $final_path
+npm install
+DATA_PATH="/home/yunohost.app/"$app
+mkdir -p $DATA_PATH
+chown -R "$app":"$app" $final_path $DATA_PATH
+
+
+#=================================================
+# ADVERTISE SERVICE IN ADMIN PANEL
+#=================================================
+
+yunohost service add $app --log "/var/log/$app/APP.log"
+
+#=================================================
+# RESTORE SYSTEMD
+#=================================================
+
+ynh_restore_file "/etc/systemd/system/$app.service"
+systemctl enable $app.service
+
+#=================================================
+# START HASTEBIN IN BACKGROUND
+#=================================================
+
+systemctl start $app
+
+#=================================================
+# RESTORE THE LOGROTATE CONFIGURATION
+#=================================================
+
+ynh_restore_file "/etc/logrotate.d/$app"
+
+#=================================================
+# GENERIC FINALIZATION
+#=================================================
+# RELOAD NGINX
+#=================================================
+
+systemctl reload nginx
diff --git a/scripts/upgrade b/scripts/upgrade
index af5a271..ca651c0 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -1,18 +1,162 @@
 #!/bin/bash
 
-# Exit on command errors and treat unset variables as an error
-set -eu
+#=================================================
+# GENERIC START
+#=================================================
+# IMPORT GENERIC HELPERS
+#=================================================
 
-# Load common variables and functions
-source ./_common.sh
+source _common.sh
+source /usr/share/yunohost/helpers
 
-# Retrieve arguments
-domain=$(ynh_app_setting_get "$app" domain)
-path=$(ynh_app_setting_get "$app" path)
-is_public=$(ynh_app_setting_get "$app" is_public)
+#=================================================
+# LOAD SETTINGS
+#=================================================
 
-# Install the app
-install_haste $domain $path $is_public
+app=$YNH_APP_INSTANCE_NAME
 
-# Start Haste
-sudo systemctl restart "$app".service
+domain=$(ynh_app_setting_get $app domain)
+path_url=$(ynh_app_setting_get $app path_url)
+is_public=$(ynh_app_setting_get $app is_public)
+final_path=$(ynh_app_setting_get $app final_path)
+port=$(ynh_app_setting_get $app port)
+
+#=================================================
+# ENSURE DOWNWARD COMPATIBILITY
+#=================================================
+
+# Fix is_public as a boolean value
+if [ "$is_public" = "Yes" ]; then
+	ynh_app_setting_set $app is_public 1
+	is_public=1
+elif [ "$is_public" = "No" ]; then
+	ynh_app_setting_set $app is_public 0
+	is_public=0
+fi
+
+# If db_name doesn't exist, create it
+if [ -z $db_name ]; then
+	db_name=$(ynh_sanitize_dbid $app)
+	ynh_app_setting_set $app db_name $db_name
+fi
+
+# If final_path doesn't exist, create it
+if [ -z $final_path ]; then
+	final_path=/var/www/$app
+	ynh_app_setting_set $app final_path $final_path
+fi
+
+#=================================================
+# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
+#=================================================
+
+# Backup the current version of the app
+ynh_backup_before_upgrade
+ynh_clean_setup () {
+	# restore it if the upgrade fails
+	ynh_restore_upgradebackup
+}
+# Exit if an error occurs during the execution of the script
+ynh_abort_if_errors
+
+#=================================================
+# CHECK THE PATH
+#=================================================
+
+# Normalize the URL path syntax
+path_url=$(ynh_normalize_url_path $path_url)
+
+#=================================================
+# INSTALL NODEJS
+#=================================================
+
+ynh_install_nodejs 4 
+#=================================================
+# STANDARD UPGRADE STEPS
+#=================================================
+# DOWNLOAD, CHECK AND UNPACK SOURCE
+#=================================================
+
+# Download, check integrity, uncompress and patch the source from app.src
+ynh_setup_source "$final_path"
+# Set files ownership during installation
+chown $app: $final_path -R
+chmod 755 $final_path -R
+
+#=================================================
+# NGINX CONFIGURATION
+#=================================================
+
+# Create a dedicated nginx config
+ynh_add_nginx_config
+
+#=================================================
+# CREATE DEDICATED USER
+#=================================================
+
+# Create a system user
+ynh_system_user_create $app
+
+#=================================================
+# ADD SYSTEMD SERVICE
+#=================================================
+
+ynh_replace_string "__NODE__" "$nodejs_path" "../conf/systemd.service"
+ynh_replace_string "__NODEJS__" "$nodejs_use_version" "../conf/systemd.service"
+ynh_replace_string "__ENV_PATH__" "$PATH" "../conf/systemd.service"
+ynh_add_systemd_config
+#=================================================
+# INSTALL HASTEBIN
+#=================================================
+
+ynh_use_nodejs
+script_dir="$PWD"
+pushd "$final_path"
+chown -R $app: $final_path
+npm install
+DATA_PATH="/home/yunohost.app/"$app
+mkdir -p $DATA_PATH
+chown -R "$app":"$app" $final_path $DATA_PATH
+
+
+# Verify the checksum and backup the file if it's different
+ynh_backup_if_checksum_is_different "$final_path/config.js"
+# Recalculate and store the config file checksum into the app settings
+ynh_store_file_checksum "$final_path/config.js"
+
+#=================================================
+# SETUP LOGROTATE
+#=================================================
+
+# Use logrotate to manage app-specific logfile(s)
+ynh_use_logrotate
+
+#=================================================
+# GENERIC FINALIZATION
+#=================================================
+# SECURE FILES AND DIRECTORIES
+#=================================================
+
+# Set right permissions for curl installation
+chown -R root: $final_path
+
+#=================================================
+# SETUP SSOWAT
+#=================================================
+
+if [ $is_public -eq 0 ]
+then	# Remove the public access
+	ynh_app_setting_delete $app skipped_uris
+fi
+# Make app public if necessary
+if [ $is_public -eq 1 ]
+then
+	# unprotected_uris allows SSO credentials to be passed anyway
+	ynh_app_setting_set $app unprotected_uris "/"
+fi
+
+#=================================================
+# RELOAD NGINX
+#=================================================
+
+systemctl reload nginx