#!/bin/bash

set -eu
source _common.sh
source /usr/share/yunohost/helpers

# manage script failure
ynh_abort_if_errors

# retrieve arguments
app=$YNH_APP_INSTANCE_NAME
domain_old=$YNH_APP_OLD_DOMAIN
domain_new=$YNH_APP_NEW_DOMAIN
path_url_old=$YNH_APP_OLD_PATH
path_url_new=$YNH_APP_NEW_PATH

# check the syntax
[ -n "$path_url_old" ] || path_url_old="/"
path_url_old=$(ynh_normalize_url_path "$path_url_old")
[ -n "$path_url_new" ] || path_url_new="/"
path_url_new=$(ynh_normalize_url_path "$path_url_new")

# definie useful vars
nginx_conf_old="/etc/nginx/conf.d/$domain_old.d/$app.conf"
nginx_conf_new="/etc/nginx/conf.d/$domain_new.d/$app.conf"
change_domain=0
change_path_url=0

# check what should be changed
[ "$domain_old" != "$domain_new" ] && change_domain=1
[ "$path_url_old" != "$path_url_new" ] && change_path_url=1

# change the path in the nginx config file
if [ $change_path_url -eq 1 ]
then
	ynh_backup_if_checksum_is_different "$nginx_conf_old"
	if [ "$path_url_new" != "/" ]; then
		if [ "^$path_url_old" != "/" ]; then
			#$path_url_new != / & $path_url_old != /
			ynh_replace_string "rewrite ^$path_url_old$ $path_url_old/ permanent;" "rewrite ^$path_url_new$ $path_url_new/ permanent;" "$nginx_conf_old"
			ynh_replace_string "location\( \(=\|~\|~\*\|\^~\)\)\? $path_url_old" "location\1 $path_url_new" "$nginx_conf_old"
		else
			#$path_url_new != / & $path_url_old = /
			ynh_replace_string "#sub_path_only rewrite ^__PATH__$ __PATH__/ permanent;" "rewrite ^$path_url_old$ $path_url_old/ permanent;" "$nginx_conf_old"
			ynh_replace_string "location\( \(=\|~\|~\*\|\^~\)\)\? $path_url_old" "location\1 $path_url_new/" "$nginx_conf_old"
		fi
	else
		#$path_url_new = / => $path_url_old != /
		ynh_replace_string "rewrite ^$path_url_old$ $path_url_old/ permanent;" "#sub_path_only rewrite ^__PATH__$ __PATH__/ permanent;" "$nginx_conf_old"
		ynh_replace_string "location\( \(=\|~\|~\*\|\^~\)\)\? $path_url_old/" "location\1 $path_url_new" "$nginx_conf_old"
	fi
	ynh_store_file_checksum "$nginx_conf_old"
fi

# change the domain for nginx
if [ $change_domain -eq 1 ]
then
	ynh_delete_file_checksum "$nginx_conf_old"
	mv $nginx_conf_old "$nginx_conf_new"
	ynh_store_file_checksum "$nginx_conf_new"
fi

systemctl reload nginx