#!/bin/bash

#=================================================
# GENERIC STARTING
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

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

#=================================================
# LOAD SETTINGS
#=================================================

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get $app domain)
path_url=$(ynh_app_setting_get $app path)
admin_wordpress=$(ynh_app_setting_get $app admin)
language=$(ynh_app_setting_get $app language)
is_public=$(ynh_app_setting_get $app is_public)
multisite=$(ynh_app_setting_get $app multisite)
final_path=$(ynh_app_setting_get $app final_path)
db_name=$(ynh_app_setting_get $app db_name)

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

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================

if [ -z "$admin_wordpress" ]; then
	ynh_mysql_execute_as_root "select MAX(user_login) from wp_users where user_status=0 INTO OUTFILE '/tmp/wordpressuser';" $db_name
	admin_wordpress=$(cat /tmp/wordpressuser)
	ynh_secure_remove /tmp/wordpressuser
	ynh_app_setting_set $app admin $admin_wordpress
fi

if [ -z "$final_path" ]; then
	final_path=/var/www/$app
	ynh_app_setting_set $app final_path $final_path
fi

if [ -z "$language" ]; then
	language=$(grep WPLANG $final_path/wp-config.php | cut -d"'" -f4)
	ynh_app_setting_set $app language $language
fi

if [ "${is_public,,}" = "yes" ]; then
	ynh_app_setting_set $app is_public 1	# Fixe is_public en booléen
	is_public=1
elif [ "${is_public,,}" = "no" ]; then
	ynh_app_setting_set $app is_public 0
	is_public=0
fi

if [ "${multisite,,}" = "yes" ]; then
	ynh_app_setting_set $app multisite 1	# Fixe multisite en booléen
	multisite=1
elif [ "${multisite,,}" = "no" ]; then
	ynh_app_setting_set $app multisite 0
	multisite=0
fi

if [ -z $db_name ]; then	# Si db_name n'est pas renseigné dans app setting
	db_name=$(ynh_sanitize_dbid $app)
	ynh_app_setting_set $app db_name $db_name
fi

if grep add_filter.*auto_update $final_path/wp-config.php; then	# Si des add_filter demeurent dans le wp-config
	sed --in-place '/add_filter.*auto_update/d' $final_path/wp-config.php
fi

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================

# 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

#=================================================
# CHECK THE PATH
#=================================================

# Normalize the URL path syntax
path_url=$(ynh_normalize_url_path $path_url)

#=================================================
# ACTIVATE MAINTENANCE MODE
#=================================================

ynh_maintenance_mode_ON

#=================================================
# UPGRADE DEPENDENCIES
#=================================================

ynh_install_app_dependencies php5-cli

#=================================================
# NGINX CONFIGURATION
#=================================================

# Create a dedicated nginx config
ynh_add_nginx_config

#=================================================
# CREATE DEDICATED USER
#=================================================

# Create the dedicated user, if not exist
ynh_system_user_create $app

#=================================================
# PHP-FPM CONFIGURATION
#=================================================

# Create a dedicated php-fpm config
ynh_add_fpm_config

#=================================================
# SPECIFIC UPGRADE
#=================================================
# SAVE THE CONFIG FILE IF IT BEEN MODIFIED
#=================================================

# Verify the checksum and backup the file if it's different
ynh_backup_if_checksum_is_different "$final_path/wp-config.php"

#=================================================
# CONFIGURE MULTISITE
#=================================================

if [ $multisite -eq 1 ]
then
	ynh_replace_string "#--MULTISITE--" "" /etc/nginx/conf.d/$domain.d/$app.conf
	plugin_network="--network"
else
	multisite=0
	plugin_network=""
	if [ $is_public -eq 0 ]
	then
		ynh_replace_string "#--PRIVATE--" "" /etc/nginx/conf.d/$domain.d/$app.conf
	else
		ynh_replace_string "//--PUBLIC--define" "define" $final_path/wp-config.php
	fi
fi
ynh_app_setting_set $app multisite $multisite

#=================================================
# UPDATE WORDPRESS' PLUGINS
#=================================================

wget -nv https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar -O $final_path/wp-cli.phar
wpcli_alias="php $final_path/wp-cli.phar --allow-root --path=$final_path"
update_plugin () {
	( $wpcli_alias plugin is-installed $1 && $wpcli_alias plugin update $1 ) || $wpcli_alias plugin install $1
}
update_plugin simple-ldap-login
$wpcli_alias plugin activate simple-ldap-login $plugin_network
update_plugin companion-auto-update
$wpcli_alias plugin activate companion-auto-update $plugin_network
update_plugin wp-fail2ban
$wpcli_alias plugin activate wp-fail2ban $plugin_network

# Disable broken plugin http-authentication
$wpcli_alias plugin is-installed http-authentication && $wpcli_alias plugin deactivate http-authentication $plugin_network

#=================================================
# STORE THE CHECKSUM OF THE CONFIG FILE
#=================================================

# Recalculate and store the config file checksum into the app settings
ynh_store_file_checksum "$final_path/wp-config.php"

#=================================================
# GENERIC FINALISATION
#=================================================
# SECURING FILES AND DIRECTORIES
#=================================================

# Les fichiers appartiennent à l'user wordpress, pour permettre les mises à jour.
chown -R $app: $final_path
# Sauf le fichier de config wp-config.php qui appartient à root
chown root: $final_path/wp-config.php

#=================================================
# UPGRADE FAIL2BAN
#=================================================

ynh_add_fail2ban_config --logpath="/var/log/auth.log" --failregex="Authentication (attempt for unknown user|failure for) .* from <HOST>" --max_retry=5

#=================================================
# SETUP SSOWAT
#=================================================

ynh_app_setting_delete $app skipped_uris	# Retire le skipped_uris si il existe encore.
if [ $is_public -eq 0 ]; then	# Retire l'accès public
	ynh_app_setting_delete $app unprotected_uris
else	# Ou remplace le skipped_uris par unprotected_uris le cas échéant.
	ynh_app_setting_set $app unprotected_uris "/"
fi

#=================================================
# RELOAD NGINX
#=================================================

ynh_systemd_action --action=reload --service_name=nginx

#=================================================
# REMOVE WP-CLI.PHAR
#=================================================

ynh_secure_remove $final_path/wp-cli.phar

#=================================================
# DEACTIVE MAINTENANCE MODE
#=================================================

ynh_maintenance_mode_OFF