#!/bin/bash

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

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)
admin=$(ynh_app_setting_get --app=$app --key=admin)
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)
db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)

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

upgrade_type=$(ynh_check_app_version_changed)

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

# 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 [ -z "$admin" ]; then
	admin=$(ynh_app_setting_get --app=$app --key=admin_user)
	if [ -z $admin ]; then
		ynh_die --message="no admin user found"
	fi;
	ynh_app_setting_delete --app=$app --key=admin_user
	ynh_app_setting_set --app=$app --key=admin --value=$admin
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

# 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 a permission if needed
if ! ynh_permission_exists --permission="api"; then
	ynh_permission_create --permission="api" --url="/api" --additional_urls="/scripts/api.js" --allowed="visitors" --auth_header="false" --show_tile="false" --protected="true"
fi

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

# 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

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Making sure dedicated system user exists..."

# Create a dedicated user (if not existing)
ynh_system_user_create --username=$app --home_dir="$final_path"
 
#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_script_progression --message="Upgrading dependencies..."

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Upgrading source files..."

# Download, check integrity, uncompress and patch the source from app.src
# into tmp dir

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

# Create a dedicated nginx config
ynh_add_nginx_config

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

# Create a dedicated PHP-FPM config
ynh_add_fpm_config --package="$extra_php_dependencies"

#=================================================
# SPECIFIC UPGRADE
#=================================================

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

	# Download, check integrity, uncompress and patch the source from app.src
	ynh_setup_source --dest_dir="$final_path" --keep="$final_path/data/config.php $final_path/data/users/. $final_path/extensions/."
fi

chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app:www-data "$final_path"

#=================================================
# CRON SETUP
#=================================================
ynh_script_progression --message="Setting up cron..."

ynh_add_config --template="../conf/freshrss.cron" --destination="/etc/cron.d/$app"
chmod 644 "/etc/cron.d/$app"

if [ -f /tmp/FreshRSS.log ]; then
	ynh_secure_remove /tmp/FreshRSS.log
fi

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

# reconfigure application with latest parameters
ynh_exec_as $app $final_path/cli/reconfigure.php --default_user $admin --auth_type http_auth --environment production --base_url https://$domain$path_url --title FreshRSS --api_enabled --db-type mysql --db-host localhost --db-user $db_name --db-password $db_pwd --db-base $db_name

#=================================================
# RELOAD NGINX AND PHP-FPM
#=================================================
ynh_script_progression --message="Reloading NGINX web server and PHP-FPM..."

ynh_systemd_action --service_name=nginx --action=reload
ynh_systemd_action --service_name=php$phpversion-fpm --action=reload

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

ynh_script_progression --message="Upgrade of $app completed"