#!/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
#=================================================
ynh_script_progression --message="Loading installation settings..." --time --weight=1

final_path=$(ynh_app_setting_get --app="$app" --key=final_path)
is_public=$(ynh_app_setting_get --app="$app" --key=is_public)

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

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

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

ynh_systemd_action --service_name="$app" --action="stop"
ynh_systemd_action --service_name="$app-celery" --action="stop"

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

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

# Change the path in the nginx config file
if [ $change_path -eq 1 ]
then
	# Make a backup of the original nginx config file if modified
	ynh_backup_if_checksum_is_different --file="$nginx_conf_path"
	# Set global variables for nginx helper
	domain="$old_domain"
	path_url="$new_path"
	# Create a dedicated nginx config
	ynh_add_nginx_config
fi

# Change the domain for nginx
if [ $change_domain -eq 1 ]
then
	# Delete file checksum for the old conf file location
	ynh_delete_file_checksum --file="$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
#=================================================
# MODIFY SETTINGS
#=================================================
ynh_script_progression --message="Modify weblate's config file..." --time --weight=1

settings="$final_path/venv/lib/$weblate_pypath/site-packages/weblate/settings.py"
ynh_backup_if_checksum_is_different --file="$settings"

# Change the path in the nginx config file
if [ $change_path -eq 1 ]
then
	ynh_replace_string --match_string="URL_PREFIX = \"${old_path%/}\"" --replace_string="URL_PREFIX = \"${new_path%/}\"" --target_file="$settings"
fi

# Change the domain for nginx
if [ $change_domain -eq 1 ]
then
	# replace SERVER_EMAIL
	ynh_replace_string --match_string="noreply@$old_domain" --replace_string="noreply@$new_domain" --target_file="$settings"
	# replace SITE_DOMAIN
	ynh_replace_string --match_string="SITE_DOMAIN = \"$old_domain\"" --replace_string="SITE_DOMAIN = \"$new_domain\"" --target_file="$settings"
	# replace ALLOWED_HOSTS
	ynh_replace_string --match_string="ALLOWED_HOSTS = \[\"$old_domain\"\]" --replace_string="ALLOWED_HOSTS = \[\"$new_domain\"\]" --target_file="$settings"
fi

ynh_store_file_checksum --file="$settings"

#=================================================
# MODIFY UWSGI
#=================================================

finaluwsgiini="/etc/uwsgi/apps-available/$app.ini"
ynh_backup_if_checksum_is_different --file="$finaluwsgiini"

# Change the path in the nginx config file
if [ $change_path -eq 1 ]
then
	ynh_replace_string --match_string="mount = $old_path=" --replace_string="mount = $new_path=" --target_file="$finaluwsgiini"
fi

ynh_store_file_checksum --file="$finaluwsgiini"

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

ynh_systemd_action --service_name="$app" --action="start"
ynh_systemd_action --service_name="$app-celery" --action="start"

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

ynh_systemd_action --service_name=nginx --action=reload

#=================================================
# END OF SCRIPT
#=================================================

ynh_script_progression --message="Change of URL completed for $app" --time --last