<?php
/*
Plugin Name: Flo CRM Server plugin
Description: This small plugin should be installed on main server to send info to remote CRM
Version: 0.1.0
Author: Lozovan Nicolae
Author URI: http://flothemes.com
*/

if ( ! class_exists( 'FloCRM_Server' ) ) :

    class FloCRM_Server {

        /**
         * @var string CRM Url to make post actions
         */
        static $crm_url = ''; // http://192.168.100.111/flocrm/one/


        /**
         * FloCRM_Server constructor.
         */
        function __construct() {

            add_action( 'admin_init', array($this, 'settings_api_init') );

            self::$crm_url = get_option( 'flocrm_site_url' );


            // Includes endpoint class
            require 'includes/class-endpoint.php';

            //add_action('woocommerce_order_status_completed', array($this, 'on_order_complete') );
            add_action('woocommerce_order_status_changed', array($this, 'on_order_complete'), 99, 3);

            add_action('init', array($this, 'buy_additional_service'));

            //session_start();


        }

        /**
         * Trigger function when order is complete
         *
         * @return mixed
         */
        public function on_order_complete( $order_id, $old_status, $new_status ){

            if( $new_status !== "completed" && $new_status !== "partial-payment" ) return;

            $new_service_order = false;

            // For additional purchased services
            if ( $parent_order = $this->if_is_additional_service( $order_id) ){

                $new_order = new WC_Order( $order_id );

                $items = array();

                $need_this = array(
                    'order_id',
                    'name',
                    'product_id',
                    'variation_id',
                    'quantity',
                    'tax_class',
                    'subtotal',
                    'subtotal_tax',
                    'total',
                    'total_tax',
                );
                foreach ($new_order->get_items() as $key => $value) {
                    $local = array();
                    foreach ( $need_this as $prop ) {
                        $local[ $prop ] = $value[ $prop ];
                    }
                    $items[] = $local;
                }

                $response  = wp_remote_post( self::$crm_url . 'api/flocrm/additional_service', array(
                    'method' => 'POST',
                    'timeout' => 45,
                    'redirection' => 5,
                    'httpversion' => '1.0',
                    'blocking' => true,
                    'headers' => array(),
                    'body' => array(
                        'parent_order' => $parent_order,
                        'child_order' => $order_id,
                        'child_order_items' => $items,
                    ),
                    'cookies' => array()
                ));

                // Check for error
                if ( is_wp_error( $response ) ) {
                    return;
                }

                return;

            } else {

                $new_service_order = $this->order_has_service( $order_id );

            }

            if ( $new_service_order ) {
                $request  = wp_remote_get( self::$crm_url . 'api/crm_new_order/' . $order_id );
            }

        }

        /**
         * Returns TRUE if at least one product of this order contains taxonomy with slug "service"
         *
         * @param $order_id
         * @return bool
         */
        function order_has_service( $order_id  ){
            $new_order = new WC_Order( $order_id );

            $is_service = false;

            $service_cat = get_option( 'flocrm_sync_category' );

            foreach ($new_order->get_items() as $key => $value) {

                $ids = $value->get_data('id');
                $prod_id = $ids['product_id'];

                $args = array( 'taxonomy' => 'product_cat' );
                $terms = wp_get_post_terms($prod_id,'product_cat', $args);

                if ( is_array($terms) ) {
                    foreach ($terms as $term){

                        if ($term->slug == $service_cat) {
                            $is_service = true;
                            break;
                        }
                    }
                }

                if ($is_service) break;

            }

            return $is_service;
        }

        /**
         * Checks and sets a child additional service to it's parent service
         *
         * @param $order_id
         * @return bool true if it's a child order, and meta was updated, overwise false
         */
        public function if_is_additional_service( $order_id ){

            session_start();

            if ( empty($_SESSION['flocrm_add_service']) ) return false;

            $parent_id = $_SESSION['flocrm_add_service'];

            wp_update_post(
                array(
                    'ID' => $order_id,
                    'post_parent' => $parent_id
                )
            );

            unset($_SESSION['flocrm_add_service']);
            session_destroy();

            return $parent_id;

        }

        /**
         *
         * After logging in to flothemes, redirect back to CRM
         * @param $redirect_to
         * @return string
         */
        static function redirect_after_login( $redirect_to ){

            if ( isset( $_GET['crm_redirect'] ) ) {
                $redirect_to = self::$crm_url . 'my-account';
            }

            return $redirect_to;
        }

        /**
         * Add allowed redirect link to the list
         * @param $content
         */
        static function allowed_redirect_hosts( $content ){
            $content[] = 'crm.flothemes.com';
            $content[] = '192.168.100.111'; // localhost

            return $content;
        }

        /**
         * Callback for registering CRM settings in GENERAL page
         */
        public function settings_api_init() {

            // Add the section to general settings
            add_settings_section(
                'flocrm_setting_section',
                'FloCRM Server Settings Section',
                array($this, 'flocrm_setting_section_callback_function'),
                'general'
            );

            // Add the field with the names and function to use
            add_settings_field(
                'flocrm_site_url',
                'FloCRM Site URL',
                array($this, 'flocrm_site_url_callback_function'),
                'general',
                'flocrm_setting_section'
            );


            register_setting( 'general', 'flocrm_site_url' );

            // Add the field with the names and function to use
            add_settings_field(
                'flocrm_sync_category',
                'Product Category To Sync',
                array($this, 'flocrm_sync_category_callback_function'),
                'general',
                'flocrm_setting_section'
            );


            register_setting( 'general', 'flocrm_sync_category' );
        }
        /**
         * Callback for CRM setting section
         */
        public function flocrm_setting_section_callback_function() {
            //echo '<p>Settings for FloCRM Server-Side plugin</p>';
        }
        /**
         * Callback for CRM url setting input
         */
        public function flocrm_site_url_callback_function() {
            echo '<input name="flocrm_site_url" id="flocrm_site_url" type="url" value="'.get_option( 'flocrm_site_url' ).'" class="regular-text code" />
            <p class="description" id="flocrm_site_url-description">The link should end with a closing slash "/".</p>';
        }

        /**
         * Callback for CRM sync categ setting input
         */
        public function flocrm_sync_category_callback_function() {
            echo '<input name="flocrm_sync_category" id="flocrm_sync_category" type="text" value="'.get_option( 'flocrm_sync_category' ).'" class="regular-text code" />
            <p class="description" id="flocrm_sync_category-description">Add only the category slug for products marked as CRM Services.</p>';
        }

        /**
         * Logic when additional order is purchased, to relate it to parent order
         */
        public function buy_additional_service(){

            if ( ! empty( $_GET['adserv'] ) ) {

                $order_id = intval ( $_GET['adserv'] );

                if ( get_post_type( $order_id ) != 'shop_order' )  return;

                session_start();
                $_SESSION['flocrm_add_service'] = $order_id;
                session_write_close();

            }

        }

    }

endif;

new FloCRM_Server();

add_filter('woocommerce_login_redirect', array('FloCRM_Server', 'redirect_after_login'));
add_filter( 'allowed_redirect_hosts' , array('FloCRM_Server', 'allowed_redirect_hosts') , 10 );