#!/bin/bash

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

#=================================================
# RETRIEVE ARGUMENTS
#=================================================
old_domain=$YNH_APP_OLD_DOMAIN

new_domain=$YNH_APP_NEW_DOMAIN

app=$YNH_APP_INSTANCE_NAME

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..." --weight=1

get_app_settings

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up the app before changing its URL (may take a while)..." --weight=1

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
	# Remove the new domain config file, the remove script won't do it as it doesn't know yet its location.
	ynh_secure_remove --file="/etc/nginx/conf.d/$new_domain.d/$app.conf"

	# Restore it if the upgrade fails
	ynh_restore_upgradebackup
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# CHECK WHICH PARTS SHOULD BE CHANGED
#=================================================
change_domain=0
if [ "$old_domain" != "$new_domain" ]
then
	change_domain=1
fi

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# STOP SYSTEMD SERVICES
#=================================================
ynh_script_progression --message="Stopping systemd services..." --weight=1

ynh_systemd_action --service_name=$app-celery --action="stop" --log_path="/var/log/$app/$app.log"
ynh_systemd_action --service_name=$app-beat --action="stop" --log_path="/var/log/$app/$app.log"
ynh_systemd_action --service_name=$app.socket --action="stop" --log_path="/var/log/$app/$app.log"
ynh_systemd_action --service_name=$app --action="stop" --log_path="/var/log/$app/$app.log"

#=================================================
# MODIFY URL IN NGINX CONF
#=================================================
ynh_script_progression --message="Updating NGINX web server configuration..." --weight=1

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

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

#=================================================
# SPECIFIC MODIFICATIONS
#=================================================
echo $new_domain > $final_path/envs/prod/DEFAULT_BASE_URL
echo "$app@$new_domain" > $final_path/envs/prod/DEFAULT_FROM_EMAIL
echo "$app@$new_domain" > $final_path/envs/prod/SERVER_EMAIL

set_permissions

#=================================================
# GENERIC FINALISATION
#=================================================
# START SYSTEMD SERVICES
#=================================================
ynh_script_progression --message="Starting systemd services..." --weight=1

ynh_systemd_action --service_name=$app.socket --action="start" --log_path="/var/log/$app/$app.log"
ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"
ynh_systemd_action --service_name=$app-celery --action="start" --log_path="/var/log/$app/$app.log"
ynh_systemd_action --service_name=$app-beat --action="start" --log_path="/var/log/$app/$app.log"

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..." --weight=1

ynh_systemd_action --service_name=nginx --action=reload

#=================================================
# END OF SCRIPT
#=================================================
ynh_script_progression --message="Change of URL completed for $app" --last