#!/bin/bash

#=================================================
# GENERIC STARTING
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

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

#=================================================
# LOAD SETTINGS
#=================================================

# Needed for helper "ynh_add_nginx_config"
final_path=$(ynh_app_setting_get $app final_path)

# Add settings here as needed by your application
#db_name=$(ynh_app_setting_get "$app" db_name)
#db_pwd=$(ynh_app_setting_get $app db_pwd)

#=================================================
# 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

#=================================================
# 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 [ $change_path -eq 1 ]
then
	# Make a backup of the original nginx config file if modified
	ynh_backup_if_checksum_is_different "$nginx_conf_path"
	# Set global variables for nginx helper
	domain="$old_domain"
	path_url="$new_path"
	# Bug in Nginx with locations and aliases (see http://stackoverflow.com/a/35102259 )
	if [ $path_url = "/" ]; then
	  sed -i "s@__LOCATION_HACK__@@g" ../conf/nginx.conf
	  sed -i "s@__PATH_HACK__@/@g" ../conf/nginx.conf
	else
	  sed -i "s@__LOCATION_HACK__@$path_url@g" ../conf/nginx.conf
	  sed -i "s@__PATH_HACK__@$path_url$path_url@g" ../conf/nginx.conf
	fi
	# Create a dedicated nginx config
	ynh_add_nginx_config
fi

# Change the domain for nginx
if [ $change_domain -eq 1 ]
then
	# Delete file checksum for the old conf file location
	ynh_delete_file_checksum "$nginx_conf_path"
	mv $nginx_conf_path /etc/nginx/conf.d/$new_domain.d/$app.conf
	# Store file checksum for the new config file location
	ynh_store_file_checksum "/etc/nginx/conf.d/$new_domain.d/$app.conf"
fi

#=================================================
# SPECIFIC MODIFICATIONS
#=================================================
# MODIFY URL IN CONFIG.PHP
#=================================================

if [ $change_domain -eq 1 ]
then
    ynh_replace_string $old_domain $new_domain $final_path/config.php
fi

if [ $change_path -eq 1 ]
then
    ynh_replace_string $old_path $new_path $final_path/config.php
fi

#=================================================
# GENERIC FINALISATION
#=================================================
# RELOAD NGINX
#=================================================

systemctl reload nginx