#!/bin/bash

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

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..."
app=$YNH_APP_INSTANCE_NAME
domain=$(ynh_app_setting_get --app="$app" --key=domain)
path_url=$(ynh_app_setting_get --app="$app" --key=path)
is_public=$(ynh_app_setting_get --app="$app" --key=is_public)
admin_user=$(ynh_app_setting_get --app="$app" --key=admin_user)
backup_core_only=$(ynh_app_setting_get --app="$app" --key=backup_core_only)
final_path=$(ynh_app_setting_get --app="$app" --key=final_path)
data_path=$(ynh_app_setting_get --app="$app" --key=data_path)

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..." --time --weight=1
# If final_path doesn't exist, create it
if [ -z "$final_path" ]; then
	final_path="/var/www/$app"
	ynh_app_setting_set --app="$app" --key=final_path --value="$final_path"
fi
# If data_path doesn't exist, create it
if [ -z "$data_path" ]; then
	data_path="/home/yunohost.app/$app"
	ynh_app_setting_set --app="$app" --key=data_path --value="$data_path"
fi

#=================================================
# CHECK VERSION
#=================================================
upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up the app before upgrading (may take a while)..." --weight=3
if [ -f "/etc/yunohost/apps/$app/scripts/backup" ]; then
	ynh_backup_before_upgrade # Backup the current version of the app
	ynh_clean_setup () {
		ynh_restore_upgradebackup
	}
fi
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
if [ "$upgrade_type" == "UPGRADE_APP" ]; then	
	# download & unpack bozon
	ynh_script_progression --message="Setting up source files..." --weight=2
	## download source
	tmpdir=$(mktemp -d)
	ynh_setup_source --dest_dir="$tmpdir"
	## clean & copy files needed to final folder
	myynh_clean_source
	[ -e "$tmpdir/config.php" ] && ynh_secure_remove "$tmpdir/config.php"
	cp -a "$tmpdir/." "$final_path"
	ynh_secure_remove "$tmpdir"
	## set permissions
	myynh_set_permissions
fi

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading nginx web server configuration..."
if [ "$path_url" != "/" ]; then
	ynh_replace_string --match_string="^#sub_path_only" --replace_string="" --target_file="../conf/nginx.conf"
fi
ynh_add_nginx_config

#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_script_progression --message="Upgrading dependencies..." --time --weight=1
ynh_install_app_dependencies $pkg_dependencies

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Making sure dedicated system user exists..."
ynh_system_user_create --username="$app"

#=================================================
# PHP-FPM CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading php-fpm configuration..."
ynh_add_fpm_config

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Upgrading SSOwat configuration..."
if [ $is_public -eq 0 ]; then
	# escape magic chars in vars (lua magic chars are ().%+-*?[^$ according to https://www.lua.org/pil/20.2.html)
	domainluaregex=$(echo "$domain" | sed -e 's/[]().%+*?[^$[]/\%&/g' | sed -e 's/\-/\%&/g')
	pathluaregex=$([ "$path_url" == "/" ] || echo "$path_url" | sed -e 's/[]().%+*?[^$[]/\%&/g' | sed -e 's/\-/\%&/g')
	regexList="${domainluaregex}${pathluaregex}/index%.php$","${domainluaregex}${pathluaregex}/index%.php%?p=.*$"
	ynh_app_setting_set --app="$app" --key=protected_regex --value="$regexList"
else
	ynh_app_setting_set --app="$app" --key=unprotected_uris --value="/"
fi

#=================================================
# CLEAN PHP SESSIONS STORED IN /var/lib/phpx/sessions
#=================================================
ynh_script_progression --message="Cleaning php sessions stored..."
if [ -d "/usr/lib/php5" ]; then
	[ -x /usr/lib/php5/sessionclean ] && /usr/lib/php5/sessionclean
elif [ -d "/usr/lib/php" ]; then
	[ -x /usr/lib/php/sessionclean ] && /usr/lib/php/sessionclean
fi

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading nginx web server..."
ynh_systemd_action --service_name=nginx --action=reload

#=================================================
# END OF SCRIPT
#=================================================
ynh_script_progression --message="Upgrade of $app completed" --last