diff --git a/README.md b/README.md
index cf35b2b..dd7db00 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# minchat_ynh : minchat for Yunohost
+# MinChat for YunoHost
 
 [![Integration level](https://dash.yunohost.org/integration/minchat.svg)](https://dash.yunohost.org/appci/app/minchat) ![](https://ci-apps.yunohost.org/ci/badges/minchat.status.svg) ![](https://ci-apps.yunohost.org/ci/badges/minchat.maintain.svg)
 
diff --git a/conf/app.src b/conf/app.src
new file mode 100644
index 0000000..947619c
--- /dev/null
+++ b/conf/app.src
@@ -0,0 +1,6 @@
+SOURCE_URL=https://github.com/wojtek77/chat/archive/master.tar.gz
+SOURCE_SUM=50e66895cbbda095e02a8a7375ca51c0eb589956f68a223a8217d0f4c1fe1fa6
+SOURCE_SUM_PRG=sha256sum
+SOURCE_FORMAT=tar.gz
+SOURCE_IN_SUBDIR=true
+SOURCE_FILENAME=
\ No newline at end of file
diff --git a/conf/nginx.conf b/conf/nginx.conf
index 998914e..e3a589f 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -1,4 +1,4 @@
-location __PATH__ {
+location __PATH__/ {
 
   alias __FINALPATH__/;
 
@@ -6,7 +6,7 @@ location __PATH__ {
   try_files $uri $uri/ index.php;
   location ~ [^/]\.php(/|$) {
     fastcgi_split_path_info ^(.+?\.php)(/.*)$;
-    fastcgi_pass unix:/var/run/php5-fpm-__NAME__.sock;
+    fastcgi_pass unix:/var/run/php7-fpm-__NAME__.sock;
     fastcgi_index index.php;
     include fastcgi_params;
     fastcgi_param   REMOTE_USER   $remote_user;
diff --git a/conf/php-fpm.conf b/conf/php-fpm.conf
index 7bad39e..b278147 100644
--- a/conf/php-fpm.conf
+++ b/conf/php-fpm.conf
@@ -30,7 +30,7 @@ group = __USER__
 ;                            specific port;
 ;   '/path/to/unix/socket' - to listen on a unix socket.
 ; Note: This value is mandatory.
-listen = /var/run/php5-fpm-__NAMETOCHANGE__.sock
+listen = /var/run/php7-fpm-__NAMETOCHANGE__.sock
 
 ; Set listen(2) backlog.
 ; Default Value: 128 (-1 on FreeBSD and OpenBSD)
diff --git a/scripts/_common b/scripts/_common.sh
similarity index 94%
rename from scripts/_common
rename to scripts/_common.sh
index 437774e..35f580d 100644
--- a/scripts/_common
+++ b/scripts/_common.sh
@@ -1,6 +1,29 @@
-MINCHAT_VERSION="1.1"
-MINCHAT_SOURCE_URL="https://github.com/wojtek77/chat/archive/master.tar.gz"
-MINCHAT_SOURCE_SHA256="50e66895cbbda095e02a8a7375ca51c0eb589956f68a223a8217d0f4c1fe1fa6"
+#!/bin/bash
+
+#=================================================
+# COMMON VARIABLES
+#=================================================
+
+# dependencies used by the app
+pkg_dependencies="deb1 deb2 php$YNH_DEFAULT_PHP_VERSION-deb1 php$YNH_DEFAULT_PHP_VERSION-deb2"
+
+YNH_PHP_VERSION="7.3"
+
+#=================================================
+# PERSONAL HELPERS
+#=================================================
+
+#=================================================
+# EXPERIMENTAL HELPERS
+#=================================================
+
+#=================================================
+# FUTURE OFFICIAL HELPERS
+#=================================================
+
+
+
+
 
 QUIET () {  # Redirige la sortie standard dans /dev/null
   $@ > /dev/null
diff --git a/scripts/install b/scripts/install
index 86ceb6f..7891e59 100644
--- a/scripts/install
+++ b/scripts/install
@@ -1,62 +1,122 @@
 #!/bin/bash
 
-# Exit on command errors and treat unset variables as an error
-set -eu
+#=================================================
+# GENERIC START
+#=================================================
+# IMPORT GENERIC HELPERS
+#=================================================
 
-# Source app helpers
-source ./_common
+source _common.sh
 source /usr/share/yunohost/helpers
 
-# Retrieve arguments
+#=================================================
+# MANAGE SCRIPT FAILURE
+#=================================================
+
+ynh_clean_setup () {
+	### Remove this function if there's nothing to clean before calling the remove script.
+	true
+}
+# Exit if an error occurs during the execution of the script
+ynh_abort_if_errors
+
+#=================================================
+# RETRIEVE ARGUMENTS FROM THE MANIFEST
+#=================================================
+
 domain=$YNH_APP_ARG_DOMAIN
-path=$(ynh_normalize_url_path $YNH_APP_ARG_PATH)
+path_url=$YNH_APP_ARG_PATH
 is_public=$YNH_APP_ARG_IS_PUBLIC
 
 app=$YNH_APP_INSTANCE_NAME
 
-CHECK_VAR "$app" "app name not set"
+#=================================================
+# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
+#=================================================
+ynh_script_progression --message="Validating installation parameters..." --time --weight=1
 
-CHECK_PATH
-
-CHECK_DOMAINPATH
-
-CHECK_FINALPATH
-
-# Save app settings
-ynh_app_setting_set $app domain $domain
-ynh_app_setting_set $app path $path
-ynh_app_setting_set $app is_public $is_public
-
-# Create system user dedicace for this app
-ynh_system_user_create $app
-
-# Copy files to the right place
+### If the app uses nginx as web server (written in HTML/PHP in most cases), the final path should be "/var/www/$app".
+### If the app provides an internal web server (or uses another application server such as uwsgi), the final path should be "/opt/yunohost/$app"
 final_path=/var/www/$app
-sudo mkdir -p $final_path
-ynh_app_setting_set $app final_path $final_path
+test ! -e "$final_path" || ynh_die --message="This path already contains a folder"
 
-# Get source application
-extract_source $final_path
+# Register (book) web path
+ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url
 
-# Modify Nginx configuration file and copy it to Nginx conf directory
-ynh_nginx_config
+#=================================================
+# STORE SETTINGS FROM MANIFEST
+#=================================================
+ynh_script_progression --message="Storing installation settings..." --time --weight=1
 
-# Create the php-fpm pool config
-ynh_fpm_config
+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
 
-# Change owner
-sudo chown $app: -R $final_path
+#=================================================
+# DOWNLOAD, CHECK AND UNPACK SOURCE
+#=================================================
+ynh_script_progression --message="Setting up source files..." --time --weight=1
 
-# Set ssowat config
-if [ $is_public -eq 0 ]
-then
-	ynh_app_setting_delete $app skipped_uris # Delete public access
-fi
+ynh_app_setting_set --app=$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..." --time --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
+
+# Create a system user
+ynh_system_user_create --username=$app
+
+#=================================================
+# PHP-FPM CONFIGURATION
+#=================================================
+ynh_script_progression --message="Configuring php-fpm..." --time --weight=1
+
+# Create a dedicated php-fpm config
+ynh_add_fpm_config
+
+#=================================================
+# GENERIC FINALIZATION
+#=================================================
+# SECURE FILES AND DIRECTORIES
+#=================================================
+
+# Set permissions to app files
+chown -R $app: $final_path
+
+#=================================================
+# SETUP SSOWAT
+#=================================================
+ynh_script_progression --message="Configuring SSOwat..." --time --weight=1
+
+# Make app public if necessary
 if [ $is_public -eq 1 ]
 then
-	ynh_app_setting_set $app skipped_uris "/" # Make app public if necessary
+	# unprotected_uris allows SSO credentials to be passed anyway.
+	ynh_app_setting_set --app=$app --key=unprotected_uris --value="/"
 fi
 
-sudo systemctl reload nginx
-sudo yunohost app ssowatconf
\ No newline at end of file
+#=================================================
+# RELOAD NGINX
+#=================================================
+ynh_script_progression --message="Reloading nginx web server..." --time --weight=1
+
+ynh_systemd_action --service_name=nginx --action=reload
+
+#=================================================
+# END OF SCRIPT
+#=================================================
+
+ynh_script_progression --message="Installation of $app completed" --time --last