diff --git a/conf/nginx.conf b/conf/nginx.conf
index 94cf9b3..bcd94f2 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -1,6 +1,6 @@
 location __PATH__ {
     include uwsgi_params;
-    uwsgi_pass unix:///run/uwsgi/app/pgadmin/socket;
+    uwsgi_pass unix:///var/run/__NAME__/app.socket;
 
     uwsgi_read_timeout 180;
     uwsgi_send_timeout 180;
diff --git a/conf/pgadmin.ini b/conf/uwsgi.ini
similarity index 100%
rename from conf/pgadmin.ini
rename to conf/uwsgi.ini
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 50dd5de..4d8c8d0 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -6,6 +6,7 @@ app=$YNH_APP_INSTANCE_NAME
 final_path=/opt/yunohost/$app
 pgadmin_user="pgadmin"
 python_version="3.5"
+dependances="python3-pip build-essential python3-dev python3-venv postgresql uwsgi uwsgi-plugin-python3 expect libpq-dev"
 
 [[ -e "../settings/manifest.json" ]] || [[ -e "../manifest.json" ]] && \
     APP_VERSION=$(ynh_app_upstream_version)
@@ -16,15 +17,6 @@ app_sub_version=$(echo $APP_VERSION | cut -d'-' -f2)
 # DEFINE ALL COMMON FONCTIONS
 #=================================================
 
-install_dependance() {
-    ynh_install_app_dependencies python3-pip build-essential python3-dev python3-venv postgresql uwsgi uwsgi-plugin-python3 expect libpq-dev
-}
-
-psql_create_admin() {
-        ynh_psql_execute_as_root \
-        "CREATE USER ${1} WITH PASSWORD '${2}';"
-}
-
 setup_dir() {
     # Create empty dir for pgadmin
     mkdir -p /var/lib/pgadmin
@@ -35,7 +27,7 @@ setup_dir() {
 install_source() {
     if [ -n "$(uname -m | grep arm)" ]
     then
-        ynh_setup_source $final_path/ "armv7_stretch"
+        ynh_setup_source --dest_dir $final_path/ --source_id "armv7_stretch"
     else
 # 		Install virtualenv if it don't exist
         test -e $final_path/bin/python3 || python3 -m venv $final_path
@@ -60,15 +52,6 @@ set_permission() {
 
 config_pgadmin() {
     cp ../conf/config_local.py $final_path/lib/python$python_version/site-packages/pgadmin4/config_local.py
-    ynh_replace_string __USER__ $pgadmin_user $final_path/lib/python$python_version/site-packages/pgadmin4/config_local.py
-    ynh_replace_string __DOMAIN__ $domain $final_path/lib/python$python_version/site-packages/pgadmin4/config_local.py
+    ynh_replace_string --match_string __USER__ --replace_string $pgadmin_user --target_file $final_path/lib/python$python_version/site-packages/pgadmin4/config_local.py
+    ynh_replace_string --match_string __DOMAIN__ --replace_string $domain --target_file $final_path/lib/python$python_version/site-packages/pgadmin4/config_local.py
 }
-
-config_uwsgi() {
-    cp ../conf/pgadmin.ini /etc/uwsgi/apps-enabled/
-    ynh_replace_string __USER__ $pgadmin_user /etc/uwsgi/apps-enabled/pgadmin.ini
-    ynh_replace_string __FINALPATH__ $final_path /etc/uwsgi/apps-enabled/pgadmin.ini
-    ynh_replace_string __PATH__ $path_url /etc/uwsgi/apps-enabled/pgadmin.ini
-    ynh_replace_string __PYTHON_VERSION__ $python_version /etc/uwsgi/apps-enabled/pgadmin.ini
-}
-
diff --git a/scripts/backup b/scripts/backup
index 463c493..28a94f8 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -15,21 +15,31 @@ source ../settings/scripts/experimental_helper.sh
 source ../settings/scripts/_common.sh
 
 # LOAD SETTINGS
-final_path=$(ynh_app_setting_get $app final_path)
-domain=$(ynh_app_setting_get $app domain)
-db_name=$(ynh_app_setting_get $app db_name)
+ynh_script_progression --message="Loading installation settings..."
+final_path=$(ynh_app_setting_get --app $app --key final_path)
+domain=$(ynh_app_setting_get --app $app --key domain)
+db_name=$(ynh_app_setting_get --app $app --key db_name)
 
 #=================================================
 # STANDARD BACKUP STEPS
 #=================================================
 
 # BACKUP THE APP MAIN DIR
-ynh_backup "$final_path"
+ynh_script_progression --message="Backing up the main app directory..."
+ynh_backup --src_path "$final_path" --is_big
 
 # Backup config
-ynh_backup "/etc/nginx/conf.d/$domain.d/$app.conf"
-ynh_backup "/etc/uwsgi/apps-enabled/pgadmin.ini"
+ynh_script_progression --message="Backing configuration..."
+ynh_backup --src_path "/etc/nginx/conf.d/$domain.d/$app.conf"
+ynh_backup --src_path "/etc/uwsgi/apps-available/$app.ini"
+ynh_backup --src_path "/etc/systemd/system/uwsgi-app@.service"
 
 # Backup Data and LOG
-ynh_backup "/var/lib/pgadmin"
-ynh_backup "/var/log/pgadmin"
+ynh_script_progression --message="Backing up synapse data..."
+ynh_backup --src_path "/var/lib/pgadmin"
+ynh_script_progression --message="Backing up synapse log..."
+ynh_backup --src_path "/var/log/pgadmin"
+ynh_backup --src_path "/var/log/uwsgi/$app"
+
+ynh_script_progression --message="Backup script completed for $app. (YunoHost will then actually copy those files to the archive)." --last
+
diff --git a/scripts/change_url b/scripts/change_url
index 9c7c398..c39af3e 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -15,15 +15,16 @@ source ./experimental_helper.sh
 source ./_common.sh
 
 # Retrive arguments
+ynh_script_progression --message="Loading installation settings..."
 old_domain=$YNH_APP_OLD_DOMAIN
 domain=$YNH_APP_NEW_DOMAIN
-path_url=$(ynh_normalize_url_path ${YNH_APP_NEW_PATH:-'/'})
-http_port=$(ynh_app_setting_get "$app" http_port)
+path_url=$(ynh_normalize_url_path $(ynh_app_setting_get --app $app --key path))
 
 #=================================================
 # STANDARD MODIFICATIONS
 #=================================================
 
+ynh_script_progression --message="Updating configuration..."
 # Update nginx config
 if [ "$old_domain" != "$domain" ]
 then
@@ -38,8 +39,12 @@ fi
 ynh_add_nginx_config
 
 # Update UWSGI Config
-config_uwsgi
+ynh_add_uwsgi_service 'pgadmin_user python_version'
 
 # Reload services
+ynh_script_progression --message="Reloading services..."
 sudo systemctl reload nginx.service
-sudo systemctl restart uwsgi.service
\ No newline at end of file
+ynh_systemd_action --service_name "uwsgi-app@$app.service" \
+    --line_match "WSGI app 0 (mountpoint='$path_url') ready in [[:digit:]]* seconds on interpreter" --log_path "/var/log/uwsgi/$app/pgadmin.log"
+
+ynh_script_progression --message="Change of URL completed for $app" --time --last
diff --git a/scripts/experimental_helper.sh b/scripts/experimental_helper.sh
index 4cfc732..190d993 100644
--- a/scripts/experimental_helper.sh
+++ b/scripts/experimental_helper.sh
@@ -1,151 +1,128 @@
 #=================================================
-# POSTGRES HELPERS
+# UWSGI HELPERS
 #=================================================
 
-# Open a connection as a user
+# Check if system wide templates are available and correcly configured
 #
-# example: ynh_psql_connect_as 'user' 'pass' <<< "UPDATE ...;"
-# example: ynh_psql_connect_as 'user' 'pass' < /path/to/file.sql
-#
-# usage: ynh_psql_connect_as user pwd [db]
-# | arg: user - the user name to connect as
-# | arg: pwd - the user password
-# | arg: db - the database to connect to
-ynh_psql_connect_as() {
-	user="$1"
-	pwd="$2"
-	db="$3"
-	su --command="PGUSER=\"${user}\" PGPASSWORD=\"${pwd}\" psql \"${db}\"" postgres
+# usage: ynh_check_global_uwsgi_config
+ynh_check_global_uwsgi_config () {
+    uwsgi --version || ynh_die --message "You need to add uwsgi (and appropriate plugin) as a dependency"
+
+    cat > /etc/systemd/system/uwsgi-app@.service <<EOF
+[Unit]
+Description=%i uWSGI app
+After=syslog.target
+
+[Service]
+RuntimeDirectory=%i
+ExecStart=/usr/bin/uwsgi \
+        --ini /etc/uwsgi/apps-available/%i.ini \
+        --socket /var/run/%i/app.socket \
+        --logto /var/log/uwsgi/%i/%i.log
+User=%i
+Group=www-data
+Restart=on-failure
+KillSignal=SIGQUIT
+Type=notify
+StandardError=syslog
+NotifyAccess=all
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+    systemctl daemon-reload
 }
 
-# # Execute a command as root user
+# Create a dedicated uwsgi ini file to use with generic uwsgi service
 #
-# usage: ynh_psql_execute_as_root sql [db]
-# | arg: sql - the SQL command to execute
-# | arg: db - the database to connect to
-ynh_psql_execute_as_root () {
-	sql="$1"
-	su --command="psql" postgres <<< "$sql"
+# This will use a template in ../conf/uwsgi.ini
+# and will replace the following keywords with
+# global variables that should be defined before calling
+# this helper :
+#
+#   __APP__       by  $app
+#   __PATH__      by  $path_url
+#   __FINALPATH__ by  $final_path
+#
+#  And dynamic variables (from the last example) :
+#   __PATH_2__    by $path_2
+#   __PORT_2__    by $port_2
+#
+# To be able to customise the settings of the systemd unit you can override the rules with the file "conf/uwsgi-app@override.service".
+# This file will be automatically placed on the good place
+#
+# usage: ynh_add_uwsgi_service
+#
+# to interact with your service: `systemctl <action> uwsgi-app@app`
+ynh_add_uwsgi_service () {
+    ynh_check_global_uwsgi_config
+
+    local others_var=${1:-}
+    local finaluwsgiini="/etc/uwsgi/apps-available/$app.ini"
+
+    # www-data group is needed since it is this nginx who will start the service
+    usermod --append --groups www-data "$app" || ynh_die --message "It wasn't possible to add user $app to group www-data"
+
+    ynh_backup_if_checksum_is_different "$finaluwsgiini"
+    cp ../conf/uwsgi.ini "$finaluwsgiini"
+
+    # To avoid a break by set -u, use a void substitution ${var:-}. If the variable is not set, it's simply set with an empty variable.
+    # Substitute in a nginx config file only if the variable is not empty
+    if test -n "${final_path:-}"; then
+        ynh_replace_string --match_string "__FINALPATH__" --replace_string "$final_path" --target_file "$finaluwsgiini"
+    fi
+    if test -n "${path_url:-}"; then
+        ynh_replace_string --match_string "__PATH__" --replace_string "$path_url" --target_file "$finaluwsgiini"
+    fi
+    if test -n "${app:-}"; then
+        ynh_replace_string --match_string "__APP__" --replace_string "$app" --target_file "$finaluwsgiini"
+    fi
+
+    # Replace all other variable given as arguments
+    for var_to_replace in $others_var
+    do
+        # ${var_to_replace^^} make the content of the variable on upper-cases
+        # ${!var_to_replace} get the content of the variable named $var_to_replace 
+        ynh_replace_string --match_string "__${var_to_replace^^}__" --replace_string "${!var_to_replace}" --target_file "$finaluwsgiini"
+    done
+
+    ynh_store_file_checksum --file "$finaluwsgiini"
+
+    chown $app:root "$finaluwsgiini"
+
+    # make sure the folder for logs exists and set authorizations
+    mkdir -p /var/log/uwsgi/$app
+    chown $app:root /var/log/uwsgi/$app
+    chmod -R u=rwX,g=rX,o= /var/log/uwsgi/$app
+
+    # Setup specific Systemd rules if necessary
+    test -e ../conf/uwsgi-app@override.service && \
+        mkdir /etc/systemd/system/uwsgi-app@$app.service.d && \
+        cp ../conf/uwsgi-app@override.service /etc/systemd/system/uwsgi-app@$app.service.d/override.conf
+
+    systemctl daemon-reload
+    systemctl enable "uwsgi-app@$app.service"
+
+    # Add as a service
+    yunohost service add "uwsgi-app@$app" --log "/var/log/uwsgi/$app/$app.log"
 }
 
-# Execute a command from a file as root user
+# Remove the dedicated uwsgi ini file
 #
-# usage: ynh_psql_execute_file_as_root file [db]
-# | arg: file - the file containing SQL commands
-# | arg: db - the database to connect to
-ynh_psql_execute_file_as_root() {
-	file="$1"
-	db="$2"
-	su -c "psql $db" postgres < "$file"
+# usage: ynh_remove_uwsgi_service
+ynh_remove_uwsgi_service () {
+    local finaluwsgiini="/etc/uwsgi/apps-available/$app.ini"
+    if [ -e "$finaluwsgiini" ]; then
+        systemctl disable "uwsgi-app@$app.service"
+        yunohost service remove "uwsgi-app@$app"
+
+        ynh_secure_remove --file="$finaluwsgiini"
+        ynh_secure_remove --file="/var/log/uwsgi/$app"
+        ynh_secure_remove --file="/etc/systemd/system/uwsgi-app@$app.service.d"
+    fi
 }
 
-# Create a database, an user and its password. Then store the password in the app's config
-#
-# After executing this helper, the password of the created database will be available in $db_pwd
-# It will also be stored as "psqlpwd" into the app settings.
-#
-# usage: ynh_psql_setup_db user name [pwd]
-# | arg: user - Owner of the database
-# | arg: name - Name of the database
-# | arg: pwd - Password of the database. If not given, a password will be generated
-ynh_psql_setup_db () {
-	db_user="$1"
-	app="$1"
-	db_name="$2"
-	new_db_pwd=$(ynh_string_random)	# Generate a random password
-	# If $3 is not given, use new_db_pwd instead for db_pwd.
-	db_pwd="${3:-$new_db_pwd}"
-	ynh_psql_create_db "$db_name" "$db_user" "$db_pwd"	# Create the database
-	ynh_app_setting_set "$app" psqlpwd "$db_pwd"	# Store the password in the app's config
-}
-
-# Create a database and grant optionnaly privilegies to a user
-#
-# usage: ynh_psql_create_db db [user [pwd]]
-# | arg: db - the database name to create
-# | arg: user - the user to grant privilegies
-# | arg: pwd  - the user password
-ynh_psql_create_db() {
-	db="$1"
-	user="$2"
-	pwd="$3"
-	ynh_psql_create_user "$user" "$pwd"
-	su --command="createdb --owner=\"${user}\" \"${db}\"" postgres
-}
-
-# Drop a database
-#
-# usage: ynh_psql_drop_db db user
-# | arg: db - the database name to drop
-# | arg: user - the user to drop
-ynh_psql_remove_db() {
-	db="$1"
-	user="$2"
-	su --command="dropdb \"${db}\"" postgres
-	ynh_psql_drop_user "${user}"
-}
-
-# Dump a database
-#
-# example: ynh_psql_dump_db 'roundcube' > ./dump.sql
-#
-# usage: ynh_psql_dump_db db
-# | arg: db - the database name to dump
-# | ret: the psqldump output
-ynh_psql_dump_db() {
-	db="$1"
-	su --command="pg_dump \"${db}\"" postgres
-}
-
-
-# Create a user
-#
-# usage: ynh_psql_create_user user pwd [host]
-# | arg: user - the user name to create
-ynh_psql_create_user() {
-	user="$1"
-	pwd="$2"
-        su --command="psql -c\"CREATE USER ${user} WITH PASSWORD '${pwd}'\"" postgres
-}
-
-# Drop a user
-#
-# usage: ynh_psql_drop_user user
-# | arg: user - the user name to drop
-ynh_psql_drop_user() {
-	user="$1"
-	su --command="dropuser \"${user}\"" postgres
-}
-
-
-ynh_psql_test_if_first_run() {
-	if [ -f /etc/yunohost/psql ];
-	then
-		echo "PostgreSQL is already installed, no need to create master password"
-	else
-		pgsql=$(ynh_string_random)
-		pg_hba=""
-		echo "$pgsql" >> /etc/yunohost/psql
-
-		if [ -e /etc/postgresql/9.4/ ]
-		then
-			pg_hba=/etc/postgresql/9.4/main/pg_hba.conf
-		elif [ -e /etc/postgresql/9.6/ ]
-		then
-			pg_hba=/etc/postgresql/9.6/main/pg_hba.conf
-		else
-			ynh_die "postgresql shoud be 9.4 or 9.6"
-		fi
-
-		systemctl start postgresql
-                su --command="psql -c\"ALTER user postgres WITH PASSWORD '${pgsql}'\"" postgres
-		# we can't use peer since YunoHost create users with nologin
-		sed -i '/local\s*all\s*all\s*peer/i \
-		local all all password' "$pg_hba"
-		systemctl enable postgresql
-		systemctl reload postgresql
-	fi
-}
 
 #=================================================
 # OTHERS HELPERS
@@ -157,9 +134,9 @@ ynh_psql_test_if_first_run() {
 # | arg: manifest - Path of the manifest to read
 # | arg: key - Name of the key to find
 ynh_read_manifest () {
-	manifest="$1"
-	key="$2"
-	python3 -c "import sys, json;print(json.load(open('$manifest', encoding='utf-8'))['$key'])"
+    manifest="$1"
+    key="$2"
+    python3 -c "import sys, json;print(json.load(open('$manifest', encoding='utf-8'))['$key'])"
 }
 
 # Read the upstream version from the manifest 
@@ -193,14 +170,3 @@ ynh_app_package_version () {
     version_key=$(ynh_read_manifest "$manifest_path" "version")
     echo "${version_key/*~ynh/}"
 }
-
-# Delete a file checksum from the app settings
-#
-# $app should be defined when calling this helper
-#
-# usage: ynh_remove_file_checksum file
-# | arg: file - The file for which the checksum will be deleted
-ynh_delete_file_checksum () {
-	local checksum_setting_name=checksum_${1//[\/ ]/_}	# Replace all '/' and ' ' by '_'
-	ynh_app_setting_delete $app $checksum_setting_name
-}
\ No newline at end of file
diff --git a/scripts/install b/scripts/install
index 15e9e4a..73b71bf 100644
--- a/scripts/install
+++ b/scripts/install
@@ -14,83 +14,102 @@ ynh_abort_if_errors
 source ./experimental_helper.sh
 source ./_common.sh
 
+ynh_script_progression --message="Validating installation parameters..."
+
 # RETRIEVE ARGUMENTS FROM THE MANIFEST
 domain=$YNH_APP_ARG_DOMAIN
 path_url=$(ynh_normalize_url_path $YNH_APP_ARG_PATH)
 admin=$YNH_APP_ARG_ADMIN
-admin_pwd=$YNH_APP_ARG_ADMIN_PASSWORD
 db_user="pgadmin"
+ynh_print_OFF
+admin_pwd=$YNH_APP_ARG_ADMIN_PASSWORD
+ynh_print_ON
 
 # CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
-test ! -e "$final_path" || ynh_die "This path already contains a folder"
+test ! -e "$final_path" || ynh_die --message "This path already contains a folder"
 
 # Check web path availability
-ynh_webpath_available $domain $path_url
+ynh_webpath_available --domain $domain --path_url $path_url
 # Register (book) web path
-ynh_webpath_register $app $domain $path_url
+ynh_webpath_register --app $app --domain $domain --path_url $path_url
 
 # Get user email and check that the user exist
-email=$(ynh_user_get_info $admin 'mail')
+email=$(ynh_user_get_info --username $admin --key 'mail')
 if [[ -z $email ]]
 then
-    ynh_die "Can't get user email, check that the user exist or that the user have an email"
+    ynh_die --message "Can't get user email, check that the user exist or that the user have an email"
 fi
 
 # Build user password
-db_pwd=$(ynh_string_random 30)
-
-# Reserch an opened porf for pgadmin
-port=$(ynh_find_port 5050)
+ynh_script_progression --message="Defining db password..."
+ynh_print_OFF
+db_pwd=$(ynh_string_random --length 30)
+ynh_print_ON
 
 # STORE SETTINGS FROM MANIFEST
-ynh_app_setting_set $app domain $domain
-ynh_app_setting_set $app path $path_url
-ynh_app_setting_set $app pgadmin_port $port
-ynh_app_setting_set $app admin $admin
-ynh_app_setting_set $app admin_pwd "$admin_pwd"
-ynh_app_setting_set $app db_user "$db_user"
-ynh_app_setting_set $app db_pwd "$db_pwd"
+ynh_script_progression --message="Storing installation settings..."
+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 admin --value $admin
+ynh_app_setting_set --app $app --key db_user --value "$db_user"
+ynh_app_setting_set --app $app --key final_path --value $final_path
+ynh_print_OFF
+ynh_app_setting_set --app $app --key admin_pwd --value "$admin_pwd"
+ynh_app_setting_set --app $app --key db_pwd --value "$db_pwd"
+ynh_print_ON
 
 #=================================================
 # STANDARD MODIFICATIONS
 #=================================================
 
 # Install dependance
-install_dependance
+ynh_script_progression --message="Installing dependencies..." --weight=7
+ynh_install_app_dependencies $dependances
 
 # Create user
-ynh_system_user_create $pgadmin_user /var/lib/pgadmin
-
-# DOWNLOAD, CHECK AND UNPACK SOURCE
-ynh_app_setting_set $app final_path $final_path
+ynh_script_progression --message="Configuring system user..."
+ynh_system_user_create --username $pgadmin_user --home_dir /var/lib/$app
 
 # Download, check integrity, uncompress and patch the source from app.src
+ynh_script_progression --message="Installing sources files..." --weight=10
 setup_dir
 install_source
 
+ynh_script_progression --message="Configuring application..."
+
 # CONFIGURE PGADMIN
 config_pgadmin
 
 # Config uwsgi
-config_uwsgi
+ynh_add_uwsgi_service 'pgadmin_user python_version'
 
 # Create a dedicated nginx config
 ynh_add_nginx_config
 
+ynh_script_progression --message="Configuring sqlite database..."
+
 # initialisation sqlite database for pgadmin
 chmod +x ../conf/setup.exp
 PS1=""
 source $final_path/bin/activate
-ynh_replace_special_string "__ADMIN_PASSWORD__" "$admin_pwd" "../conf/setup.exp"
+ynh_print_OFF
+ynh_replace_special_string --match_string "__ADMIN_PASSWORD__" --replace_string "$admin_pwd" --target_file "../conf/setup.exp"
+ynh_print_ON
 ../conf/setup.exp "$final_path/bin/python3" "$final_path/lib/python$python_version/site-packages/pgadmin4/setup.py" "$email"
 
 # POPULATE THE DATABASE
+ynh_script_progression --message="Configuring Postgresql database..."
 ynh_psql_test_if_first_run
-su --command="psql -c\"CREATE USER ${db_user} WITH PASSWORD '${db_pwd}' SUPERUSER CREATEDB CREATEROLE REPLICATION\"" postgres
+ynh_print_OFF
+ynh_psql_execute_as_root \
+    --sql "CREATE USER ${db_user} WITH PASSWORD '${db_pwd}' SUPERUSER CREATEDB CREATEROLE REPLICATION"
+ynh_print_ON
 
 # Add Server In PGadmin database
-ynh_replace_string "__PYTHON_VERSION__" "$python_version" config_database.py
+ynh_replace_string --match_string "__PYTHON_VERSION__" --replace_string "$python_version" --target_file config_database.py
+ynh_print_OFF
 $final_path/bin/python3 config_database.py "$db_user" "$db_pwd"
+ynh_print_ON
 deactivate
 
 #=================================================
@@ -98,13 +117,20 @@ deactivate
 #=================================================
 
 # Set permission after initialisation
+ynh_script_progression --message="Protecting directory"
 set_permission
 
 # Restrict access to admin only
+ynh_script_progression --message="Configuring permissions"
 yunohost app addaccess --users=$admin $app
 
 # Configuration de logrotate
+ynh_script_progression --message="Configuring log rotation..."
 ynh_use_logrotate /var/log/pgadmin
 
 # reload uwsgi
-systemctl restart uwsgi
+ynh_script_progression --message="Starting pgadmin services..." --weight=3
+ynh_systemd_action --service_name "uwsgi-app@$app.service" \
+    --line_match "WSGI app 0 (mountpoint='$path_url') ready in [[:digit:]]* seconds on interpreter" --log_path "/var/log/uwsgi/$app/pgadmin.log"
+
+ynh_script_progression --message="Installation of $app completed" --last
diff --git a/scripts/remove b/scripts/remove
index d1676ea..2a27209 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -15,40 +15,50 @@ source ./experimental_helper.sh
 source ./_common.sh
 
 # LOAD SETTINGS
-domain=$(ynh_app_setting_get $app domain)
-db_name=$(ynh_app_setting_get $app db_name)
-db_user="pgadmin"
+ynh_script_progression --message="Loading installation settings..."
+domain=$(ynh_app_setting_get --app $app --key domain)
+db_name=$(ynh_app_setting_get --app $app --key db_name)
+db_user="$app"
 
 #=================================================
 # STANDARD REMOVE
 #=================================================
 
+# Stop service
+ynh_systemd_action --service_name "uwsgi-app@$app.service" --action stop
+
 # Remove db user
+ynh_script_progression --message="Cleaning the PostgreSQL database"
 ynh_psql_drop_user $db_user
 
 # Remove depandance
+ynh_script_progression --message="Removing dependencies" --weight=10
 ynh_remove_app_dependencies || true
 
 # Remove the app directory securely
-ynh_secure_remove "$final_path"
+ynh_script_progression --message="Removing app main directory" --weight=4
+ynh_secure_remove --file="$final_path"
 
 # Remove app data
-ynh_secure_remove /var/lib/pgadmin
+ynh_secure_remove --file=/var/lib/$app
 
 # Remove logrotate
+ynh_script_progression --message="Removing logrotate configuration"
 ynh_remove_logrotate
 
 # Remove logs
-ynh_secure_remove /var/log/pgadmin
+ynh_script_progression --message="Removing logs"
+ynh_secure_remove --file=/var/log/$app
 
 # Remove the dedicated nginx config
+ynh_script_progression --message="Removing configuration"
 ynh_remove_nginx_config
 
 # Remove uwsgi config
-ynh_secure_remove /etc/uwsgi/apps-enabled/pgadmin.ini
+ynh_remove_uwsgi_service
 
 # Delete a system user
+ynh_script_progression --message="Removing the dedicated system user"
 ynh_system_user_delete $app
 
-# reload uwsgi
-systemctl restart uwsgi
\ No newline at end of file
+ynh_script_progression --message="Removal of $app completed" --last
diff --git a/scripts/restore b/scripts/restore
index cf1a70d..bd2d5fa 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -15,44 +15,65 @@ source ../settings/scripts/experimental_helper.sh
 source ../settings/scripts/_common.sh
 
 # LOAD SETTINGS
-domain=$(ynh_app_setting_get $app domain)
-path_url=$(ynh_app_setting_get $app path)
-admin=$(ynh_app_setting_get $app admin)
-final_path=$(ynh_app_setting_get $app final_path)
-db_name=$(ynh_app_setting_get $app db_name)
-db_user=$(ynh_app_setting_get $app db_user)
-db_pwd=$(ynh_app_setting_get $app db_pwd)
+ynh_script_progression --message="Loading settings..."
+domain=$(ynh_app_setting_get --app $app --key domain)
+path_url=$(ynh_app_setting_get --app $app --key path)
+admin=$(ynh_app_setting_get --app $app --key admin)
+final_path=$(ynh_app_setting_get --app $app --key final_path)
+db_name=$(ynh_app_setting_get --app $app --key db_name)
+db_user=$(ynh_app_setting_get --app $app --key db_user)
+ynh_print_OFF
+db_pwd=$(ynh_app_setting_get --app $app --key db_pwd)
+ynh_print_ON
 
 #=================================================
 # STANDARD RESTORATION STEPS
 #=================================================
 
 # Install dependance
-install_dependance
+ynh_script_progression --message="Reinstalling dependencies..." --weight=5
+ynh_install_app_dependencies $dependances
 
 # Create user
-ynh_system_user_create $pgadmin_user /var/lib/pgadmin
+ynh_script_progression --message="Recreating the dedicated system user..."
+ynh_system_user_create --username $pgadmin_user --home_dir /var/lib/$app
 
 # Restore all config and data
+ynh_script_progression --message="Restoring files..." --weight=5
 ynh_restore
 
 # POPULATE THE DATABASE
+ynh_script_progression --message="Reconfiguring Postgresql database..."
 ynh_psql_test_if_first_run
-su --command="psql -c\"CREATE USER ${db_user} WITH PASSWORD '${db_pwd}' SUPERUSER CREATEDB CREATEROLE REPLICATION\"" postgres
+ynh_print_OFF
+ynh_psql_execute_as_root \
+    --sql "CREATE USER ${db_user} WITH PASSWORD '${db_pwd}' SUPERUSER CREATEDB CREATEROLE REPLICATION"
+ynh_print_ON
+
+# Restore systemd configuration
+ynh_script_progression --message="Reconfiguring application..."
+systemctl daemon-reload
+systemctl enable "uwsgi-app@$app.service"
 
 #=================================================
 # GENERIC FINALIZATION
 #=================================================
 
 # Set the permission
+ynh_script_progression --message="Protecting directory"
 set_permission
 
 # Restrict access to admin only
+ynh_script_progression --message="Configuring permissions"
 yunohost app addaccess --users=$admin $app
 
 # Configuration de logrotate
+ynh_script_progression --message="Configuring log rotation..."
 ynh_use_logrotate /var/log/pgadmin
 
 # reload uwsgi and nginx
-systemctl restart uwsgi
+ynh_systemd_action --service_name "uwsgi-app@$app.service" \
+    --line_match "WSGI app 0 (mountpoint='$path_url') ready in [[:digit:]]* seconds on interpreter" --log_path "/var/log/uwsgi/$app/pgadmin.log"
 systemctl reload nginx
+
+ynh_script_progression --message="Restoration completed for $app" --last
diff --git a/scripts/upgrade b/scripts/upgrade
index 77551d8..b059428 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -15,41 +15,57 @@ source ./experimental_helper.sh
 source ./_common.sh
 
 # LOAD SETTINGS
-domain=$(ynh_app_setting_get $app domain)
-path_url=$(ynh_normalize_url_path $(ynh_app_setting_get $app path))
-admin=$(ynh_app_setting_get $app admin)
+ynh_script_progression --message="Loading installation settings..."
+domain=$(ynh_app_setting_get --app $app --key domain)
+path_url=$(ynh_normalize_url_path $(ynh_app_setting_get --app $app --key path))
+admin=$(ynh_app_setting_get --app $app --key admin)
 
 # BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
+ynh_script_progression --message="Backing up the app before upgrading (may take a while)..." --weight=10
 ynh_backup_before_upgrade	# Backup the current version of the app
 ynh_clean_setup () {
 	ynh_restore_upgradebackup	# restore it if the upgrade fails
 }
 
+ynh_systemd_action --service_name "uwsgi-app@$app.service" --action stop
+
 #=================================================
 # STANDARD UPGRADE STEPS
 #=================================================
 
 # Install dependance
-install_dependance
+ynh_script_progression --message="Upgrading dependencies..."
+ynh_install_app_dependencies $dependances
 
 # Download, check integrity, uncompress and patch the source from app.src
+ynh_script_progression --message="Upgrading source files..." --weight=6
 install_source
 
 # CONFIGURE PGADMIN
+ynh_script_progression --message="Configuring application..."
 config_pgadmin
 
 # Config uwsgi
-config_uwsgi
+ynh_add_uwsgi_service 'pgadmin_user python_version'
+
+# Create a dedicated nginx config
+ynh_add_nginx_config
 
 #=================================================
 # GENERIC FINALIZATION
 #=================================================
 
 # Set permission after initialisation
+ynh_script_progression --message="Protecting directory"
 set_permission
 
-# Create a dedicated nginx config
-ynh_add_nginx_config
+# Configuration de logrotate
+ynh_script_progression --message="Configuring log rotation..."
+ynh_use_logrotate /var/log/pgadmin --nonappend
 
 # reload uwsgi
-systemctl restart uwsgi
+ynh_script_progression --message="Restarting pgadmin services..." --weight=3
+ynh_systemd_action --service_name "uwsgi-app@$app.service" \
+    --line_match "WSGI app 0 (mountpoint='$path_url') ready in [[:digit:]]* seconds on interpreter" --log_path "/var/log/uwsgi/$app/pgadmin.log"
+
+ynh_script_progression --message="Upgrade of $app completed" --last