#!/bin/bash

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

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

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

#REMOVEME? app=$YNH_APP_INSTANCE_NAME

#REMOVEME? domain=$(ynh_app_setting_get --app=$app --key=domain)
#REMOVEME? path=$(ynh_app_setting_get --app=$app --key=path)
#REMOVEME? admin=$(ynh_app_setting_get --app=$app --key=admin)
#REMOVEME? #REMOVEME? install_dir=$(ynh_app_setting_get --app=$app --key=install_dir)
#REMOVEME? #language=$(ynh_app_setting_get --app=$app --key=language)
#REMOVEME? db_name=$(ynh_app_setting_get --app=$app --key=db_name)

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

### This helper will compare the version of the currently installed app and the version of the upstream package.
### $upgrade_type can have 2 different values
### - UPGRADE_APP if the upstream app version has changed
### - UPGRADE_PACKAGE if only the YunoHost package has changed
### ynh_check_app_version_changed will stop the upgrade if the app is up to date.
### UPGRADE_APP should be used to upgrade the core app only if there's an upgrade to do.
upgrade_type=$(ynh_check_app_version_changed)

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

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

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

#
# N.B. : the followings setting migrations snippets are provided as *EXAMPLES*
# of what you may want to do in some cases (e.g. a setting was not defined on
# some legacy installs and you therefore want to initiaze stuff during upgrade)
#

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

# If install_dir doesn't exist, create it
#if [ -z "$install_dir" ]; then
#	install_dir=/var/www/$app
#REMOVEME? #	ynh_app_setting_set --app=$app --key=install_dir --value=$install_dir
#fi

### If nobody installed your app before 4.1,
### then you may safely remove these lines

# Cleaning legacy permissions
#REMOVEME? if ynh_legacy_permissions_exists; then
#REMOVEME? 	ynh_legacy_permissions_delete_all

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

#REMOVEME? if ! ynh_permission_exists --permission="admin"; then
	# Create the required permissions
#REMOVEME? 	ynh_permission_create --permission="admin" --url="/admin" --allowed=$admin
fi

# Create a permission if needed
#REMOVEME? if ! ynh_permission_exists --permission="api"; then
#REMOVEME? 	ynh_permission_create --permission="api" --url="/api" --allowed="visitors" --show_tile="false" --protected="true"
fi

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

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

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Upgrading source files..." --weight=1
	
	# Test because file doesn’t exist at first install. It is created at first page opening.
	if test -f "$install_dir/inc/digiwords.db"
	then
		# Create a temporary directory
		tmpdir="$(mktemp -d)"
	
		# Backup the inc/digiwords.db file to the temp dir
		cp -ar "$install_dir/inc/digiwords.db" "$tmpdir/digiwords.db"
	
		# Remove the app directory securely
#REMOVEME? 		ynh_secure_remove --file=$install_dir
	
		# Download, check integrity, uncompress and patch the source from app.src
		ynh_setup_source --dest_dir="$install_dir"
	
		# Copy digiwords.db back to the install_dir
		cp -ar "$tmpdir/digiwords.db" "$install_dir/inc/digiwords.db"

		# Remove the tmp directory securely
		ynh_secure_remove --file="$tmpdir"
	else
		# Download, check integrity, uncompress and patch the source from app.src
		ynh_setup_source --dest_dir="$install_dir"
	fi
fi

# FIXME: this should be managed by the core in the future
# Here, as a packager, you may have to tweak the ownerhsip/permissions
# such that the appropriate users (e.g. maybe www-data) can access
# files in some cases.
# But FOR THE LOVE OF GOD, do not allow r/x for "others" on the entire folder -
# this will be treated as a security issue.
chmod 750 "$install_dir"
chmod -R o-rwx "$install_dir"
chown -R $app:www-data "$install_dir"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading NGINX web server configuration..." --weight=1

# Create a dedicated NGINX config
ynh_add_nginx_config

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

#REMOVEME? ynh_install_app_dependencies $pkg_dependencies

#=================================================
# PHP-FPM CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading PHP-FPM configuration..." --weight=1

# Create a dedicated PHP-FPM config
ynh_add_fpm_config

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

#=================================================
# GENERIC FINALIZATION
#=================================================
# UPGRADE FAIL2BAN
#=================================================
#ynh_script_progression --message="Reconfiguring Fail2Ban..." --time --weight=1

# Create a dedicated Fail2Ban config
#ynh_add_fail2ban_config --logpath="/var/log/nginx/${domain}-error.log" --failregex="Regex to match into the log for a failed login"

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

#REMOVEME? ynh_systemd_action --service_name=nginx --action=reload

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

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