diff --git a/README.md b/README.md
index 0d07035..29c173d 100644
--- a/README.md
+++ b/README.md
@@ -1,32 +1,23 @@
 # Work In Progress : do not install in production
-## TODO
-- find a way to let user edit the hook and not overwrite it
-- better check if gogs is installed and on the repo format
-- backup/restore
 
+# Haste for YunoHost
 
-# Gogs web hosting for YunoHost
+Haste is an open-source pastebin software written in node.js.
+A publicly available version can be found at hastebin.com
 
-This Yunohost App take an existing gogs repository and serve it with nginx
-
-Gogs is a self-hosted Git service written in Go. Alternative to Github.
-- [Gogs website](http://gogs.io)
-- [Gogs package for YunoHost](https://github.com/YunoHost-Apps/gogs_ynh)
 
 ## Requirements
 - Functionnal instance of [YunoHost](https://yunohost.org)
-- [Gogs package must](https://github.com/YunoHost-Apps/gogs_ynh) be installed
-- The repository that you want to serve must exist in Gogs
 
 ## Installation
 From command line:
 
-`sudo yunohost app install -l MySite https://github.com/YunoHost-Apps/gogs_webhost_ynh`
+`sudo yunohost app install -l Haste https://github.com/YunoHost-Apps/haste_ynh`
 
 ## Upgrade
 From command line:
 
-`sudo yunohost app upgrade -u https://github.com/YunoHost-Apps/gogs_webhost_ynh gogswebhost`
+`sudo yunohost app upgrade -u https://github.com/YunoHost-Apps/haste_ynh haste`
 
 ## Infos
 
diff --git a/conf/haste.sh b/conf/haste.sh
new file mode 100644
index 0000000..1f38713
--- /dev/null
+++ b/conf/haste.sh
@@ -0,0 +1,50 @@
+#!/bin/bash
+
+set -eu
+
+PASTE_URL="https://YNH_HASTE_URL"
+
+haste () {
+	local output returnfile contents
+	if (( $# == 0 )) && [[ $(printf "%s" "$0" | wc -c) > 0 ]]
+		then
+		contents=$0
+	elif (( $# != 1 )) || [[ $1 =~ ^(-h|--help)$ ]]
+		then
+		echo "Usage: $0 FILE"
+		echo "Upload contents of plaintext document to hastebin."
+		echo "\nInvocation with no arguments takes input from stdin or pipe."
+		echo "Terminate stdin by EOF (Ctrl-D)."
+		return 1
+	elif [[ -e $1 && ! -f $1 ]]
+		then
+		echo "Error: Not a regular file."
+		return 1
+	elif [[ ! -e $1 ]]
+		then
+		echo "Error: No such file."
+		return 1
+	elif (( $(stat -c %s $1) > (512*1024**1) ))
+		then
+		echo "Error: File must be smaller than 512 KiB."
+		return 1
+	fi
+	if [[ -n "$contents" ]] || [[ $(printf "%s" "$contents" | wc -c) < 1 ]]
+		then
+		contents=$(cat $1)
+	fi
+	output=$(curl -# -f -XPOST "http://"${PASTE_URL}"/documents" -d"$contents")
+	if (( $? == 0 )) && [[ $output =~ \"key\" ]]
+		then
+		returnfile=$(sed 's/^.*"key":"/http:\/\/'${PASTE_URL}'\//;s/".*$//' <<< "$output")
+		if [[ -n $returnfile ]]
+			then
+			echo "$returnfile"
+			return 0
+		fi
+	fi
+	echo "Upload failed."
+	return 1
+}
+
+haste
diff --git a/manifest.json b/manifest.json
index c165399..027dd2b 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Haste is an open-source pastebin software written in node.js",
         "fr": "Haste is an open-source pastebin software written in node.js"
     },
-    "url": "https://example.com",
+    "url": "https://github.com/seejohnrun/haste-server",
     "license": "free",
     "maintainer": {
         "name": "mbugeia",
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 3e02b90..97fadab 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -3,36 +3,121 @@
 #
 
 APPNAME="haste"
+app=${YNH_APP_INSTANCE_NAME:-haste}
 
-# Gogs version
+# Haste version
 VERSION="master"
 
+# set globals variables
+DESTDIR="/opt/"${app}
+DATA_PATH="/home/yunohost.app/"$app
+
 # Remote URL to fetch Haste tarball
 HASTE_URL="https://github.com/seejohnrun/haste-server/archive/"${VERSION}".zip"
 
+# Source YunoHost helpers
+source /usr/share/yunohost/helpers
+
 #
 # Common helpers
 #
 
+check_or_install_npm() {
+  if ! dpkg -s npm | grep "installed" > /dev/null 2>&1; then
+    sudo apt-get update
+    sudo apt-get install -y npm
+  fi
+}
+
+pre_inst_haste() {
+  # retrieve, extract, copy haste, add user if necessary
+  local TMPDIR=$(mktemp -d)
+  local HASTE_SOURCE=$1
+
+  # Check destination directory
+  [[ -d $DESTDIR ]] && ynh_die \
+  "The destination directory '$DESTDIR' already exists.\
+   You should safely delete it before restoring this app."
+
+   # 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."
+
+  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"
+
+  # Add user if not exist
+  id -g "$app" &>/dev/null || sudo addgroup "$app" --system --quiet
+  id -u "$app" &>/dev/null || sudo adduser "$app" \
+      --ingroup "$app" --system --quiet --shell /bin/bash
+
+  # Configure init script
+  sudo cp ../conf/"$app".service /etc/systemd/system/
+  sudo systemctl daemon-reload
+  sudo systemctl enable "$app".service
+  }
+
 # Download, extract and install Haste to the given directory
 # usage: install_haste DESTDIR
 install_haste() {
-  local DESTDIR=$1
-  local TMPDIR=$(mktemp -d)
+  local DOMAIN=$1
+  local PATH=$2
+  local IS_PUBLIC=$3
 
-  # retrieve, extract, install haste
-  haste_tarball="/tmp/haste.zip"
-  rm -f "$haste_tarball"
-  wget -q -O "$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/* "$DESTDIR"
-  rm -rf "$haste_tarball" "$TMPDIR"
+  check_or_install_npm
+  pre_inst_haste
 
 	# install haste
 	current_dir=$(pwd)
 	cd "$DESTDIR"
 	sudo npm install
 	cd $current_dir
+
+  sudo mkdir -p $DATA_PATH
+  sudo chown -R "$app":"$app" $DESTDIR $DATA_PATH
+
+  # Configure haste with config.js file
+  sudo cp ../conf/config.js "$DESTDIR"/config.js
+  sudo sed -i "s@YNH_DATA_PATH@$DATA_PATH@g" "$DESTDIR"/config.js
+
+  # Modify Nginx configuration file and copy it to Nginx conf directory
+  sed -i "s@PATHTOCHANGE@${path%/}@g" ../conf/nginx.conf
+  if [ "$path" = "/" ]
+  then
+      sed -i "s@COMMENT_IF_ROOT@#@g" ../conf/nginx.conf
+  else
+      sed -i "s@COMMENT_IF_ROOT@@g" ../conf/nginx.conf
+  fi
+  sudo cp ../conf/nginx.conf /etc/nginx/conf.d/$domain.d/"$app".conf
+
+  # 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
+
+  # Reload services
+  sudo systemctl reload nginx.service
+
+  # 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"
 }
diff --git a/scripts/backup b/scripts/backup
new file mode 100755
index 0000000..e5071aa
--- /dev/null
+++ b/scripts/backup
@@ -0,0 +1,22 @@
+#!/bin/bash
+
+# Exit on command errors and treat unset variables as an error
+set -eu
+
+# Load common variables and functions
+source ./_common.sh
+
+domain=$(ynh_app_setting_get "$app" domain)
+
+# Copy the app source and data files
+ynh_backup "$DESTDIR" "www"
+ynh_backup "$DATA_PATH" "data"
+
+# 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"
+
+# Copy NGINX configuration
+ynh_backup "/etc/nginx/conf.d/${domain}.d/${app}.conf" "nginx.conf"
diff --git a/scripts/install b/scripts/install
index eadf898..35de8c2 100755
--- a/scripts/install
+++ b/scripts/install
@@ -3,69 +3,26 @@
 # Exit on command errors and treat unset variables as an error
 set -eu
 
-app=${YNH_APP_INSTANCE_NAME:-haste}
+# Load common variables and functions
+source ./_common.sh
 
 # Retrieve arguments
 domain=$YNH_APP_ARG_DOMAIN
 path=$YNH_APP_ARG_PATH
 is_public=$YNH_APP_ARG_IS_PUBLIC
 
-DATA_PATH="/home/yunohost.app/"$app
-
-# Load common variables
-source ./_common.sh
-
-# Source YunoHost helpers
-source /usr/share/yunohost/helpers
-
-# Save app settings
-ynh_app_setting_set "$app" is_public "$is_public"
-
 # Check domain/path availability
 sudo yunohost app checkurl "${domain}${path}" -a "$app" \
     || ynh_die "Path not available: ${domain}${path}"
 
-# Add user
-id -g "$app" &>/dev/null || sudo addgroup "$app" --system --quiet
-id -u "$app" &>/dev/null || sudo adduser "$app" \
-    --ingroup "$app" --system --quiet --shell /bin/bash
+# Save app settings
+ynh_app_setting_set "$app" is_public "$is_public"
 
 # Install the app
-DESTDIR="/opt/"${app}
-install_haste $DESTDIR
-sudo mkdir -p $DATA_PATH
-sudo chown -R "$app":"$app" $DESTDIR $DATA_PATH
-
-# Configure haste with config.js file
-sudo cp ../conf/config.js "$DESTDIR"/config.js
-sudo sed -i "s@YNH_DATA_PATH@$DATA_PATH@g" "$DESTDIR"/config.js
-
-# Configure init script
-sudo cp ../conf/haste.service /etc/systemd/system/
-sudo systemctl daemon-reload
-sudo systemctl enable "$app".service
+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"/"$app".log
-
-# Modify Nginx configuration file and copy it to Nginx conf directory
-sed -i "s@PATHTOCHANGE@${path%/}@g" ../conf/nginx.conf
-if [ "$path" = "/" ]
-then
-    sed -i "s@COMMENT_IF_ROOT@#@g" ../conf/nginx.conf
-else
-    sed -i "s@COMMENT_IF_ROOT@@g" ../conf/nginx.conf
-fi
-sudo cp ../conf/nginx.conf /etc/nginx/conf.d/$domain.d/"$app".conf
-
-# 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
-
-# Reload services
-sudo systemctl reload nginx.service
diff --git a/scripts/remove b/scripts/remove
index 107c5c8..7bf6d53 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -1,10 +1,10 @@
 #!/bin/bash
 
-# See comments in install script
-app=${YNH_APP_INSTANCE_NAME:-haste}
+# Exit on command errors and treat unset variables as an error
+set -eu
 
-# Source YunoHost helpers
-source /usr/share/yunohost/helpers
+# Load common variables and functions
+source ./_common.sh
 
 # Retrieve app settings
 domain=$(ynh_app_setting_get "$app" domain)
@@ -15,10 +15,6 @@ sudo systemctl stop "$app".service
 # Remove sources
 sudo rm -rf "/opt/"${app}
 
-# Remove post-receive hook
-repo_path="/home/gogs/repositories/"$gogsrepo".git"
-sudo rm -f $repo_path"/hooks/post-receive"
-
 # Remove nginx configuration file
 [[ -n $domain ]] && sudo rm -f "/etc/nginx/conf.d/${domain}.d/${app}.conf"
 
diff --git a/scripts/restore b/scripts/restore
new file mode 100755
index 0000000..2b4fada
--- /dev/null
+++ b/scripts/restore
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+# Exit on command errors and treat unset variables as an error
+set -eu
+
+# Load common variables and functions
+source ./_common.sh
+
+# 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)
+
+# Check domain/path availability
+sudo yunohost app checkurl "${domain}${path}" -a "$app" \
+    || ynh_die "Path not available: ${domain}${path}"
+
+pre_inst_haste backup
+
+# Restore NGINX configuration
+sudo cp -a ./nginx.conf "/etc/nginx/conf.d/${domain}.d/${app}.conf"
+
+# Restart webserver and app
+sudo systemctl reload nginx.service
+sudo systemctl start "$app".service
+
+# Add Haste to YunoHost's monitored services
+sudo yunohost service add "$app" --log /var/log/"$app"/"$app".log
diff --git a/scripts/upgrade b/scripts/upgrade
new file mode 100755
index 0000000..af5a271
--- /dev/null
+++ b/scripts/upgrade
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+# Exit on command errors and treat unset variables as an error
+set -eu
+
+# Load common variables and functions
+source ./_common.sh
+
+# 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)
+
+# Install the app
+install_haste $domain $path $is_public
+
+# Start Haste
+sudo systemctl restart "$app".service