#!/bin/bash

#=================================================
# GENERIC STARTING
#=================================================
# IMPORT GENERIC HELPERS
#=================================================
set -eu
source _common.sh
source /usr/share/yunohost/helpers

#=================================================
# RETRIEVE ARGUMENTS
#=================================================

old_domain=$YNH_APP_OLD_DOMAIN
old_path=$YNH_APP_OLD_PATH

new_domain=$YNH_APP_NEW_DOMAIN
new_path=$YNH_APP_NEW_PATH

app=$YNH_APP_INSTANCE_NAME
final_path=/var/www/$app

#=================================================
# CHECK THE SYNTAX OF THE PATHS
#=================================================

test -n "$old_path" || old_path="/"
test -n "$new_path" || new_path="/"
new_path=$(ynh_normalize_url_path $new_path)
old_path=$(ynh_normalize_url_path $old_path)

#=================================================
# CHECK WHICH PARTS SHOULD BE CHANGED
#=================================================

change_domain=0
if [ "$old_domain" != "$new_domain" ]
then
	change_domain=1
fi

change_path=0
if [ "$old_path" != "$new_path" ]
then
	change_path=1
fi

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================

if [ $change_domain -eq 0 ]
then
	# The backup process will failed if the domain has changed, because the file settings.yml has already changed
	BACKUP_BEFORE_UPGRADE	# Backup the current version of the app
	ynh_clean_setup () {
		BACKUP_FAIL_UPGRADE	# restore it if the upgrade fails
	}
	ynh_abort_if_errors	# Active trap pour arrêter le script si une erreur est détectée.
fi

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# MODIFY URL IN NGINX CONF
#=================================================

nginx_conf_path=/etc/nginx/conf.d/$old_domain.d/$app.conf

# Change the path in the nginx config file
if [ $change_path -eq 1 ]
then
	ynh_replace_string "location $old_path" "location $new_path" "$nginx_conf_path"
	ynh_replace_string "SCRIPT_NAME $old_path" "SCRIPT_NAME $new_path" "$nginx_conf_path"
fi

# Change the domain for nginx
if [ $change_domain -eq 1 ]
then
	mv "$nginx_conf_path" "/etc/nginx/conf.d/$new_domain.d/$app.conf"
fi

#=================================================
# MODIFY settings.py
#=================================================

settingspy_conf_path="$final_path/venv/lib/python2.7/site-packages/weblate/settings.py"

# Change the path in the nginx config file
if [ $change_path -eq 1 ]
then
	ynh_replace_string "URL_PREFIX = '$old_path" "URL_PREFIX = '$new_path" "$settingspy_conf_path"
fi

# Change the domain for nginx
if [ $change_domain -eq 1 ]
then
	# replace SERVER_EMAIL
	ynh_replace_string "noreply@$old_domain" "noreply@$new_domain" "$settingspy_conf_path"
	# replace ALLOWED_HOSTS
	ynh_replace_string "['$old_domain']" "['$new_domain']" "$settingspy_conf_path"
fi

#=================================================
# ChangeSite inside weblate
#==========================================
(
	set +eu
	source "${final_path}/venv/bin/activate"
	export DJANGO_SETTINGS_MODULE="weblate.settings"
	weblate changesite --set-name "$new_domain"
)

#=================================================
# GENERIC FINALISATION
#=================================================
# RELOAD NGINX and Weblate
#=================================================
systemctl reload "$app.service"
systemctl reload nginx