#!/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
#=================================================
ynh_script_progression --message="Validating installation parameters..." --weight=2

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

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

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

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_script_progression --message="Storing installation settings..." --weight=2

ynh_app_setting_set --app=$app --key=domain --value=$domain
ynh_app_setting_set --app=$app --key=path --value=$path_url
ynh_app_setting_set --app=$app --key=admin --value=$admin_wordpress
ynh_app_setting_set --app=$app --key=is_public --value=$is_public
ynh_app_setting_set --app=$app --key=language --value=$language
ynh_app_setting_set --app=$app --key=multisite --value=$multisite

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..." --weight=9

ynh_install_app_dependencies php5-cli

#=================================================
# CREATE A MYSQL DATABASE
#=================================================
ynh_script_progression --message="Creating a MySQL database..."

db_name=$(ynh_sanitize_dbid --db_name=$app)
ynh_app_setting_set --app=$app --key=db_name --value=$db_name
ynh_mysql_setup_db --db_user=$db_name --db_name=$db_name

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=4

ynh_app_setting_set --app=$app --key=final_path --value=$final_path
# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source --dest_dir="$final_path"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring nginx web server..." --weight=3

# Create a dedicated nginx config
ynh_add_nginx_config

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Configuring system user..." --weight=3

# Create a dedicated system user
ynh_system_user_create --username=$app

#=================================================
# PHP-FPM CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring php-fpm..." --weight=2

# Create a dedicated php-fpm config
ynh_add_fpm_config

#=================================================
# SPECIFIC SETUP
#=================================================
# CONFIGURE WP-CONFIG
#=================================================
ynh_script_progression --message="Configuring wordpress..."

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

for i in 1 2 3 4 5 6 7 8
do
	j=$(ynh_string_random --length=40)
	ynh_replace_string --match_string="KEY$i" --replace_string="$j" --target_file=$final_path/wp-config.php
	sleep 0.5
done

#=================================================
# SETTING UP WITH CURL
#=================================================
ynh_script_progression --message="Installing wordpress with Curl..." --weight=10

# 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=$app --key=unprotected_uris --value="/"
# Regen SSOwat configuration
yunohost app ssowatconf

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

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

#=================================================
# INSTALL WORDPRESS PLUGINS
#=================================================
ynh_script_progression --message="Installing wordpress plugins..." --weight=20

wget --no-verbose https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar --output-document=$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-redux

#=================================================
# SET LANGUAGE
#=================================================
ynh_script_progression --message="Configuring language..." --weight=3

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

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

if [ $multisite -eq 1 ]
then
	ynh_script_progression --message="Configuring multisite..." --weight=2

	ynh_replace_string --match_string="#--MULTISITE--" --replace_string="" --target_file=/etc/nginx/conf.d/$domain.d/$app.conf
	# Allow multisite
	ynh_replace_string --match_string="//--MULTISITE1--define" --replace_string="define " --target_file=$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 --match_string="//--MULTISITE2--define" --replace_string="define" --target_file=$final_path/wp-config.php

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

#=================================================
# ACTIVATE WORDPRESS PLUGINS
#=================================================
ynh_script_progression --message="Activating plugins..." --weight=4

$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-redux $plugin_network

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

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

#=================================================
# CREATE A CRON TASK FOR AUTOMATIC UPDATE
#=================================================

echo "# Reach everyday wp-cron.php?doing_wp_cron to trig the internal wordpress cron.
0 3  *  *  * root wget -q -O - https://$domain$path_url/wp-cron.php?doing_wp_cron >/dev/null 2>&1" > /etc/cron.d/$app

#=================================================
# 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
#=================================================
ynh_script_progression --message="Configuring fail2ban..." --weight=7

# 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
#=================================================
ynh_script_progression --message="Configuring SSOwat..."

if [ $is_public -eq 0 ];
then
	# Remove the public access
	ynh_app_setting_delete --app=$app --key=unprotected_uris
fi

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading nginx web server..." --weight=3

ynh_systemd_action --service_name=nginx --action=reload

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

ynh_secure_remove $final_path/wp-cli.phar

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

echo "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" > mail_to_send

ynh_send_readme_to_admin --app_message="mail_to_send" --recipients="$admin_wordpress" --type=install

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

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