#!/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)
is_public=$(ynh_app_setting_get  --app=$app --key=is_public)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)

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

upgrade_type=$(ynh_check_app_version_changed)

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

# 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
is_public=$(ynh_app_setting_get --app=$app --key=is_public)

if [ -n "$is_public" ]; then
	# Delete is_public key. It is now handled by the permissions system
	ynh_app_setting_delete --app=$app --key=is_public
	# Delete legacy permission settings
	ynh_app_setting_delete --app=$app --key=unprotected_uris
	ynh_app_setting_delete --app=$app --key=protected_uris
	ynh_app_setting_delete --app=$app --key=skipped_uris
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

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

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"
fi

#=================================================
# REMOVE APP MAIN DIR
#=================================================

# Create a temporary directory
tmpdir="$(ynh_smart_mktemp 600)"
# Backup the config file in the temp dir
cp -a "$final_path/data" "$tmpdir/"
# Backup the theme file in the temp dir
cp -a "$final_path/tpl" "$tmpdir/"

# Remove the app directory securely
ynh_secure_remove "$final_path"

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_print_info "Upgrading source files..."
# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source "$final_path"
cp -a "$tmpdir/data" "${final_path}/"
cp -a "$tmpdir/tpl" "${final_path}/"
ynh_secure_remove "$tmpdir"

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

# Bug in Nginx with locations and aliases (see http://stackoverflow.com/a/35102259 )
if [ $path_url = "/" ]; then
  ynh_replace_string "__PATH_HACK__" "" "../conf/nginx.conf"
else
  ynh_replace_string "__PATH_HACK__" "$path_url/$path_url" "../conf/nginx.conf"
fi

# Create a dedicated NGINX config
ynh_add_nginx_config

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

ynh_install_app_dependencies $pkg_dependencies

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

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

# Create a dedicated php-fpm config
ynh_add_fpm_config --usage=low --footprint=low --package="$extra_php_dependencies"

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

# Use logrotate to manage app-specific logfile(s)
# Temporary fix for .txt log file and ynh_use_logrotate
if [ -d "$final_path/data/log.txt" ]
then
    ynh_secure_remove "$final_path/data/log.txt"
    touch "$final_path/data/log.txt"
fi
ynh_use_logrotate --non-append

#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================
# set proper permissions
ynh_script_progression --message="Set permissions..."

find $final_path -type f | xargs chmod 644
find $final_path -type d | xargs chmod 755

# Set right permissions for curl install
ynh_script_progression --message="Set rights..."
chown -R $app: $final_path

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

# Create a dedicated fail2ban config
ynh_add_fail2ban_config --logpath="$final_path/data/log.txt" --failregex="\s-\s<HOST>\s-\sLogin failed for user.*$"

#=================================================
# 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"