#!/bin/bash

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

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

#=================================================
# MANAGE FAILURE OF THE SCRIPT
#=================================================

# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# RETRIEVE ARGUMENTS FROM THE MANIFEST
#=================================================

domain=$YNH_APP_ARG_DOMAIN
path_url=$YNH_APP_ARG_PATH
admin_wordpress=$YNH_APP_ARG_ADMIN
language=$YNH_APP_ARG_LANGUAGE
multisite=$YNH_APP_ARG_MULTISITE
is_public=$YNH_APP_ARG_IS_PUBLIC

app=$YNH_APP_INSTANCE_NAME

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THIS ARGS
#=================================================

final_path=/var/www/$app
test ! -e "$final_path" || ynh_die "This path already contains a folder"

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

# Register (book) web path
ynh_webpath_register $app $domain $path_url

if [ "$path_url" == "/" ] && [ $multisite -eq 1 ]; then
	ynh_die "Multisite option of wordpress doesn't work at the root of a domain."
fi

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================

ynh_app_setting_set $app domain $domain
ynh_app_setting_set $app path $path_url
ynh_app_setting_set $app admin $admin_wordpress
ynh_app_setting_set $app is_public $is_public
ynh_app_setting_set $app language $language
ynh_app_setting_set $app multisite $multisite

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# INSTALL DEPENDENCIES
#=================================================

ynh_install_app_dependencies php5-cli

#=================================================
# CREATE A MYSQL DATABASE
#=================================================

db_name=$(ynh_sanitize_dbid $app)
ynh_app_setting_set $app db_name $db_name
ynh_mysql_setup_db $db_name $db_name

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

ynh_app_setting_set $app final_path $final_path
# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source "$final_path"

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

# Create a dedicated nginx config
ynh_add_nginx_config

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

# Create a dedicated system user
ynh_system_user_create $app

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

# Create a dedicated php-fpm config
ynh_add_fpm_config

#=================================================
# SPECIFIC SETUP
#=================================================
# CONFIGURE WP-CONFIG
#=================================================

cp ../conf/wp-config.php $final_path/wp-config.php
# Change variables in Wordpress configuration
ynh_replace_string "__DB_USER__" "$db_name" $final_path/wp-config.php
ynh_replace_string "__DB_PWD__" "$db_pwd" $final_path/wp-config.php

for i in 1 2 3 4 5 6 7 8
do
	j=$(dd if=/dev/urandom bs=1 count=200 2> /dev/null | tr -c -d '[A-Za-z0-9]' | sed -n 's/\(.\{40\}\).*/\1/p')
	if [ "$j" = "" ];
	then
		# For obscure reasons, the loop is too fast at execution
		sleep 1
		j=$(dd if=/dev/urandom bs=1 count=200 2> /dev/null | tr -c -d '[A-Za-z0-9]' | sed -n 's/\(.\{40\}\).*/\1/p')
	fi
	ynh_replace_string "KEY$i" "$j" $final_path/wp-config.php
done

#=================================================
# SETTING UP WITH CURL
#=================================================

# Set right permissions for curl install
chown -R $app: $final_path

# Set the app as temporarily public for curl call
ynh_app_setting_set $app unprotected_uris "/"
# Regen SSOwat configuration
yunohost app ssowatconf

# Reload Nginx
ynh_systemd_action --action=reload --service_name=nginx

# Wordpress installation
ynh_local_curl "/wp-admin/install.php?step=2" "&weblog_title=YunoBlog" "user_name=$admin_wordpress" "admin_password=$db_pwd" "admin_password2=$db_pwd" "admin_email=$admin_wordpress@$domain" "Submit=Install+WordPress"

ynh_print_info "Please wait during Wordpress installation" >&2
for i in `seq 1 300`
do
	# The loop waits for wordpress to be installed, or 5 minutes.
	if ynh_mysql_connect_as $db_name $db_pwd $db_name <<< "show tables" | grep -q "wp_options"; then
		# If the table wp_options is found, wordpress has finished its installation.
		break
	fi
	sleep 1
done

#=================================================
# INSTALL 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"

$wpcli_alias plugin install simple-ldap-login
$wpcli_alias plugin install http-authentication
$wpcli_alias plugin install companion-auto-update
$wpcli_alias plugin install wp-fail2ban

#=================================================
# SET LANGUAGE
#=================================================

$wpcli_alias core language install $language
$wpcli_alias site switch-language $language

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

if [ $multisite -eq 1 ]
then
	ynh_replace_string "#--MULTISITE--" "" /etc/nginx/conf.d/$domain.d/$app.conf
	# Allow multisite
	ynh_replace_string "//--MULTISITE1--define" "define " $final_path/wp-config.php

	# Activate multisite via wp-cli
	ynh_exec_fully_quiet $wpcli_alias core multisite-convert --base=$path_url/

	# Activate multisite in wordpress config
	ynh_replace_string "//--MULTISITE2--define" "define" $final_path/wp-config.php

	ynh_mysql_connect_as $db_name $db_pwd $db_name < ../conf/sql/multisite.sql
	plugin_network="--network"
else
	ynh_mysql_connect_as $db_name $db_pwd $db_name < ../conf/sql/single.sql
	plugin_network=""
fi

#=================================================
# ACTIVATE WORDPRESS PLUGINS
#=================================================

$wpcli_alias plugin activate simple-ldap-login $plugin_network
# Do not activate http-authentication, this plugin is sometimes unstable
$wpcli_alias plugin activate companion-auto-update $plugin_network
$wpcli_alias plugin activate wp-fail2ban $plugin_network

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

# Calculate 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
#=================================================

# Set permissions to app files
# Files have to be own by the user of wordpress. To allow upgrade from the app.
chown -R $app: $final_path
# Except the file config wp-config.php
chown root: $final_path/wp-config.php

#=================================================
# SETUP FAIL2BAN
#=================================================

# Create a dedicated fail2ban config
ynh_add_fail2ban_config --logpath="/var/log/auth.log" --failregex="Authentication (attempt for unknown user|failure for) .* from <HOST>" --max_retry=5

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

if [ $is_public -eq 0 ];
then
	# Remove the public access
	ynh_app_setting_delete $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

#=================================================
# SEND A README FOR THE ADMIN
#=================================================

message="If you're facing an issue or want to improve this app, please open a new issue in this project: https://github.com/YunoHost-Apps/wordpress_ynh"

ynh_send_readme_to_admin --app_message="$message" --recipients="$admin_wordpress"