#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source _common.sh
source /usr/share/yunohost/helpers

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..." --weight=2

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
path_url=$(ynh_app_setting_get --app=$app --key=path)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
language=$(ynh_app_setting_get --app=$app --key=language)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)

#=================================================
# CHECK VERSION
#=================================================

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up Rainloop before upgrading (may take a while)..." --weight=4

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
	# restore it if the upgrade fails
	ynh_restore_upgradebackup
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..." --weight=1

# If db_name doesn't exist, create it
if [ -z "$db_name" ]; then
	db_name=$(ynh_sanitize_dbid --db_name=$app)
	ynh_app_setting_set --app=$app --key=db_name --value=$db_name
fi

# 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 language doesn't exist, create it
if [ -z "$language" ]; then
	language="en"
	ynh_app_setting_set --app=$app --key=language --value=$language
fi

case "$language" in
	Francais)
		language="fr"
		ynh_app_setting_set --app=$app --key=language --value=$language
		;;
	English)
		language="en"
		ynh_app_setting_set --app=$app --key=language --value=$language
		;;
	*)
		;;
esac

# Cleaning legacy permissions
if ynh_legacy_permissions_exists; then
	ynh_legacy_permissions_delete_all

	ynh_app_setting_delete --app=$app --key=is_public
fi

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Making sure dedicated system user exists..." --weight=1

# Create a dedicated user (if not existing)
ynh_system_user_create --username=$app --home_dir="$final_path"

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Upgrading source files..." --weight=8

	# Download, check integrity, uncompress and patch the source from app.src
	ynh_setup_source --dest_dir="$final_path/app"
fi

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading NGINX web server configuration..." --weight=2

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_script_progression --message="Upgrading dependencies..." --weight=1

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# PHP-FPM CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading PHP-FPM configuration..." --weight=2

# Create a dedicated PHP-FPM config
ynh_add_fpm_config

#=================================================
# SPECIFIC UPGRADE
#=================================================
# UPDATE SSO AND PGP
#=================================================
ynh_script_progression --message="Upgrading Rainloop configuration..." --weight=2

# Upgrade time_offset value for fail2ban
# FIXME Temporary fix for rainloop, waiting for https://github.com/YunoHost/yunohost/pull/752 to be released.
# ynh_replace_string --match_string="^time_offset = .*" --replace_string="time_offset = $(date +%:::z)" --target_file="$final_path/app/data/_data_/_default_/configs/application.ini"
timezone="$(date +%:::z)"
ynh_replace_string --match_string="^time_offset = .*" --replace_string="time_offset = ${timezone//-/\\-}" --target_file="$final_path/app/data/_data_/_default_/configs/application.ini"

# update SSO
ynh_add_config --template="../sources/sso/sso.php" --destination="$final_path/index.php"

# Install PGPback by chtixof to allow users to backup/restore their PGP private keys on the server
cp -rf ../sources/pgpback "$final_path/"

#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Upgrading logrotate configuration..." --weight=2

mkdir -p $final_path/app/data/_data_/_default_/logs/fail2ban
touch $final_path/app/data/_data_/_default_/logs/fail2ban/auth-fail.log

# Use logrotate to manage app-specific logfile(s)
ynh_use_logrotate --logfile=$final_path/app/data/_data_/_default_/logs/fail2ban/auth-fail.log --non-append

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

# Set permissions on app files
chmod -R o-rwx $final_path
chown -R $app:www-data $final_path
find $final_path/. -type d -exec chmod 755 {} \;
find $final_path/. -type f -exec chmod 644 {} \;

#=================================================
# UPGRADE FAIL2BAN
#=================================================
ynh_script_progression --message="Reconfiguring Fail2Ban..." --weight=9

# Create a dedicated Fail2Ban config
ynh_add_fail2ban_config --logpath="$final_path/app/data/_data_/_default_/logs/fail2ban/auth-fail.log" --failregex="Auth failed: ip=<HOST>.*$"

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