<?php
/**
 * WP Ultimate CSV Importer plugin file.
 *
 * Copyright (C) 2010-2020, Smackcoders Inc - info@smackcoders.com
 */

namespace Smackcoders\FCSV;

if ( ! defined( 'ABSPATH' ) )
    exit; // Exit if accessed directly

class ACFProExtension extends ExtensionHandler{
    private static $instance = null;
	
    public static function getInstance() {
		
		if (ACFProExtension::$instance == null) {
			ACFProExtension::$instance = new ACFProExtension;
		}
		return ACFProExtension::$instance;
	}
	
	/**
	* Provides default mapping fields for ACF Pro plugin
	* @param string $data - selected import type
	* @return array - mapping fields
	*/
	public function processExtension($data){
		$response = [];
		$import_type = $data;
		$acf_pro_fields = $this->ACFProFields($import_type , 'ACF');
		if(!empty($acf_pro_fields)){
			$response['acf_pro_fields'] = null;		
		}
		$acf_group_fields = $this->ACFProFields($import_type  , 'GF');
		if(!empty($acf_group_fields)){
			$response['acf_group_fields'] = null;		
		}
		$acf_repeater_fields = $this->ACFProFields($import_type  , 'RF');
		if(!empty($acf_repeater_fields)){
			$response['acf_repeater_fields'] = null;
		}
		
		$acf_flexible_fields = $this->ACFProFields($import_type  , 'FC');
		if(!empty($acf_flexible_fields)){
			$response['acf_flexible_fields'] = null;	
		}
		
		return $response;		
	}
	/**
	* Retrieves ACF Pro mapping fields
	* @param string $import_type - selected import type
	* @param string $group - ACF or GF or RF
	* @return array - mapping fields
	*/	 
	public function ACFProFields($import_type ,$group) {	
		global $wpdb;	
		$repeater_field_arr = $flexible_field_arr = $group_field_arr = "";
		$group_id_arr = $customFields = $rep_customFields = array();	
		$get_acf_groups = $wpdb->get_results( $wpdb->prepare("SELECT ID, post_content FROM {$wpdb->prefix}posts WHERE post_status != 'trash' AND post_type = %s", 'acf-field-group'));
		$get_acf_groups = $wpdb->get_results( $wpdb->prepare("SELECT ID, post_content FROM {$wpdb->prefix}posts WHERE post_status != 'trash' AND post_status != 'acf-disabled' AND post_type = %s", 'acf-field-group'));
		
		// Get available ACF group id
		foreach ( $get_acf_groups as $item => $group_rules ) {
			$rule = maybe_unserialize($group_rules->post_content);
			
			if(!empty($rule)) {
				if ($import_type != 'Users') {
					foreach($rule['location'] as $key => $value) {
						if($value[0]['operator'] == '==' && $value[0]['value'] == $this->import_post_types($import_type) || $value[0]['param'] == 'comment'){	
							$group_id_arr[] = $group_rules->ID; #. ',';
						}
						elseif($value[0]['operator'] == '==' && $value[0]['value'] == 'all' && $value[0]['param'] == 'taxonomy' && in_array($this->import_post_types($import_type) , get_taxonomies())){
							$group_id_arr[] = $group_rules->ID;
						}
						elseif($value[0]['param'] == 'post_category'){
							$group_id_arr[] = $group_rules->ID;
						}
						elseif($value[0]['operator'] == '=='  && $value[0]['param'] == 'post_taxonomy'){
							$group_id_arr[] = $group_rules->ID;
						}
					}
				} else { 
					foreach($rule['location'] as $key => $value) {
						if( $value[0]['operator'] == '==' && $value[0]['param'] == 'current_user_role' || $value[0]['param'] == 'current_user'|| $value[0]['param'] == 'user_form' || $value[0]['param'] == 'user_role'){
							$group_id_arr[] = $group_rules->ID;
						}
					}
				}
			}
		}
		
		if ( !empty($group_id_arr) ) {
			
			foreach($group_id_arr as $groupId) {	
				$get_acf_fields = $wpdb->get_results( $wpdb->prepare( "SELECT ID, post_title, post_content, post_excerpt, post_name FROM {$wpdb->prefix}posts where post_status != 'trash' AND post_parent in (%s)", array($groupId) ) );			
				if ( ! empty( $get_acf_fields ) ) {	
					$group_field_arr = array();	
					$repeater_field_arr = array();						
					foreach ( $get_acf_fields as $acf_pro_fields ) {
						$get_field_content = unserialize( $acf_pro_fields->post_content );

						if ( $get_field_content['type'] == 'repeater' ) {													
							$repeater_field_arr[] = $acf_pro_fields->ID . ",";	
							foreach($repeater_field_arr as $repeater_field ) {			
							$get_sub_fields = $wpdb->get_results( $wpdb->prepare( "SELECT ID, post_title, post_content, post_excerpt, post_name FROM {$wpdb->prefix}posts where post_status != 'trash' AND post_parent in (%s)", array($repeater_field) ) );							
								
								foreach ( $get_sub_fields as $get_sub_key ) {									
									$get_sub_field_content = unserialize( $get_sub_key->post_content );									
									
									if ( $get_sub_field_content['type'] == 'repeater' || $get_sub_field_content['type'] == 'group') {											
										$repeater_field_arr[] .= $get_sub_key->ID . ",";									
									}	
								}
							}	
						}
						if ( $get_field_content['type'] == 'group' ) {	
							$group_field_arr[] = $acf_pro_fields->ID . ",";	
							foreach($group_field_arr as $group_field){		
							$get_sub_fields = $wpdb->get_results( $wpdb->prepare( "SELECT ID, post_title, post_content, post_excerpt, post_name FROM {$wpdb->prefix}posts where post_status != 'trash' AND post_parent in (%s)", array($group_field) ) );	
							foreach ( $get_sub_fields as $get_sub_key ) {
									$get_sub_field_content = unserialize( $get_sub_key->post_content );	
									$subfield_id =$get_sub_key->ID;
									if ( $get_sub_field_content['type'] == 'group' ) {
										$group_field_arr[] .= $get_sub_key->ID . ",";
									}
									if ( $get_sub_field_content['type'] == 'repeater' ) {
										$group_field_arr[] .= $get_sub_key->ID . ",";
									}
								}
							}		
						} 
						
						if ( $get_field_content['type'] == 'flexible_content' ) {
							$flexible_field_arr .= $acf_pro_fields->ID . ",";	
						} else if ( $get_field_content['type'] == 'message' || $get_field_content['type'] == 'tab' ) {	
							$customFields["ACF"][ $acf_pro_fields->post_name ]['label'] = $acf_pro_fields->post_title;
							$customFields["ACF"][ $acf_pro_fields->post_name ]['name']  = $acf_pro_fields->post_name;
						} 
						else if ( $acf_pro_fields->post_excerpt != null || $acf_pro_fields->post_excerpt != '' ) {
							
							if(($get_field_content['type'] !== 'group')&&($get_field_content['type'] !== 'repeater')){
								$customFields["ACF"][ $acf_pro_fields->post_name ]['label'] = $acf_pro_fields->post_title;
								$customFields["ACF"][ $acf_pro_fields->post_name ]['name']  = $acf_pro_fields->post_excerpt;	
						
							}
						}	
					}
				}
					
				$flexible_field_arr = substr( $flexible_field_arr, 0, - 1 ); 
				$repeater_fields = $repeater_field_arr;				
				$group_fields = $group_field_arr;					
				$flexible_fields = explode(',', $flexible_field_arr);
				$repeater_field_placeholders = array_fill(0, count($repeater_fields), '%s');	
				$group_field_placeholders = array_fill(0, count($group_fields), '%s');
				$flexible_field_placeholders = array_fill(0, count($flexible_fields), '%s');
				// Put all the placeholders in one string ‘%s, %s, %s, %s, %s,…’
				$placeholdersForGroupFields = implode(', ', $group_field_placeholders);				
				$placeholdersForRepeaterFields = implode(', ', $repeater_field_placeholders);	
				$placeholdersForFlexibleFields = implode(', ', $flexible_field_placeholders);
				if ( ! empty( $repeater_field_arr ) ) {
					$query = "SELECT ID, post_title, post_content, post_excerpt, post_name FROM {$wpdb->prefix}posts where post_status != 'trash' AND post_parent in ($placeholdersForRepeaterFields)";	
					$get_acf_repeater_fields = $wpdb->get_results( $wpdb->prepare( $query, $repeater_fields ) );	
				}
				if ( ! empty( $group_field_arr ) ) {
					$query1 = "SELECT ID, post_title, post_content, post_excerpt, post_name FROM {$wpdb->prefix}posts where post_status != 'trash' AND post_parent in ($placeholdersForGroupFields)";
					$get_acf_group_fields = $wpdb->get_results( $wpdb->prepare( $query1, $group_fields ) );		
				}
				if ( ! empty( $get_acf_repeater_fields ) ) {
					foreach ( $get_acf_repeater_fields as $acf_pro_repeater_fields ) {
				
						$get_sub_field_content = unserialize( $acf_pro_repeater_fields->post_content );
						
						if($get_sub_field_content['type'] == 'repeater') {
							$repeaterSubFields = $this->fetchACFProRepeaterFields($acf_pro_repeater_fields->ID);
							// if (is_array($repeaterSubFields) || is_object($repeaterSubFields)){
							// 	if(is_object($customFields['RF'])){
									$customFields['RF'] = is_array($customFields['RF']) ? $customFields['RF'] : [];
									$customFields['RF'] = array_merge($repeaterSubFields,$customFields['RF']);
							// 	}
							// }
							
						} else {
							$rep_customFields[ $acf_pro_repeater_fields->post_title ] = $acf_pro_repeater_fields->post_excerpt;
							$check_exist_key = "ACF: " . $acf_pro_repeater_fields->post_title;	
							if ( array_key_exists( $check_exist_key, $customFields ) ) {	
								unset( $customFields[ $check_exist_key ] );
							}	

							if(($get_sub_field_content['type'] !== 'repeater')&&($get_sub_field_content['type'] !== 'group')){
								$customFields["RF"][ $acf_pro_repeater_fields->post_name ]['label'] = $acf_pro_repeater_fields->post_title;
								//changed
								$customFields["RF"][ $acf_pro_repeater_fields->post_name ]['id']  = $acf_pro_repeater_fields->post_name;
								$customFields["RF"][ $acf_pro_repeater_fields->post_name ]['name']  = $acf_pro_repeater_fields->post_excerpt;
								$customFields["RF"][ $acf_pro_repeater_fields->post_name ]['backend_id']  = $acf_pro_repeater_fields->post_name;
							}
						}
					}
				}
				if ( ! empty( $get_acf_group_fields ) ) {
					foreach ( $get_acf_group_fields as $acf_pro_group_fields ) {
						$get_sub_field_content = unserialize( $acf_pro_group_fields->post_content );
							$rep_customFields[ $acf_pro_group_fields->post_title ] = $acf_pro_group_fields->post_excerpt;
							$check_exist_key = "ACF: " . $acf_pro_group_fields->post_title;	
							if ( array_key_exists( $check_exist_key, $customFields ) ) {
								unset( $customFields[ $check_exist_key ] );
							}	
						
							if(($get_sub_field_content['type'] !== 'group')&&($get_sub_field_content['type'] !== 'repeater')){
								$customFields["GF"][ $acf_pro_group_fields->post_name ]['label'] = $acf_pro_group_fields->post_title;
								//changed
								$customFields["GF"][ $acf_pro_group_fields->post_name ]['id']  = $acf_pro_group_fields->post_name;
								$customFields["GF"][ $acf_pro_group_fields->post_name ]['name']  = $acf_pro_group_fields->post_excerpt;
								$customFields["GF"][ $acf_pro_group_fields->post_name ]['backend_id']  = $acf_pro_group_fields->post_name;
							}
						}
				}
				if ( ! empty( $flexible_field_arr ) ) {
					$query =  "SELECT ID, post_title, post_content, post_excerpt, post_name FROM {$wpdb->prefix}posts where post_status != 'trash' AND post_parent in ($placeholdersForFlexibleFields)";
					$get_acf_flexible_content_fields = $wpdb->get_results( $wpdb->prepare( $query, $flexible_fields ) );
					
				}
				if ( ! empty( $get_acf_flexible_content_fields ) ) {
					foreach ( $get_acf_flexible_content_fields as $acf_pro_fc_fields ) {
						$fc_customFields[ $acf_pro_fc_fields->post_title ] = $acf_pro_fc_fields->post_excerpt;
						$check_exist_key = "FC: " . $acf_pro_fc_fields->post_title;
						if ( array_key_exists( $check_exist_key, $customFields ) ) {
							unset( $customFields[ $check_exist_key ] );
						}
						$get_sub_field_content = unserialize( $acf_pro_fc_fields->post_content );
						if($get_sub_field_content['type'] !== 'flexible_content'){
							if($get_sub_field_content['type'] == 'repeater'){
								$inner_flexi_rep_query = $wpdb->get_results("SELECT ID, post_title, post_content, post_excerpt, post_name FROM {$wpdb->prefix}posts where post_status != 'trash' AND post_parent = $acf_pro_fc_fields->ID ");
								
								foreach($inner_flexi_rep_query as $inner_flexi_rep_values){
									$customFields["FC"][ $inner_flexi_rep_values->post_name ]['label'] = $inner_flexi_rep_values->post_title;
									//changed
									$customFields["FC"][ $inner_flexi_rep_values->post_name ]['id']  = $inner_flexi_rep_values->post_name;
									$customFields["FC"][ $inner_flexi_rep_values->post_name ]['name']  = $inner_flexi_rep_values->post_excerpt;
									$customFields["FC"][ $inner_flexi_rep_values->post_name ]['backend_id']  = $inner_flexi_rep_values->post_name;
								}
							}
							if($get_sub_field_content['type'] == 'group'){
								$inner_flexi_grp_query = $wpdb->get_results("SELECT ID, post_title, post_content, post_excerpt, post_name FROM {$wpdb->prefix}posts where post_status != 'trash' AND post_parent = $acf_pro_fc_fields->ID ");
								
								foreach($inner_flexi_grp_query as $inner_flexi_grp_values){
									$customFields["FC"][ $inner_flexi_grp_values->post_name ]['label'] = $inner_flexi_grp_values->post_title;
									//changed
									$customFields["FC"][ $inner_flexi_grp_values->post_name ]['id']  = $inner_flexi_grp_values->post_name;
									$customFields["FC"][ $inner_flexi_grp_values->post_name ]['name']  = $inner_flexi_grp_values->post_excerpt;
									$customFields["FC"][ $inner_flexi_grp_values->post_name ]['backend_id']  = $inner_flexi_grp_values->post_name;
								}

							}
							else{
								$flexible_fields1[] = $acf_pro_fc_fields->ID;
								
								$customFields["FC"][ $acf_pro_fc_fields->post_name ]['label'] = $acf_pro_fc_fields->post_title;
								//changed
								$customFields["FC"][ $acf_pro_fc_fields->post_name ]['id']  = $acf_pro_fc_fields->post_name;
								$customFields["FC"][ $acf_pro_fc_fields->post_name ]['name']  = $acf_pro_fc_fields->post_excerpt;
								$customFields["FC"][ $acf_pro_fc_fields->post_name ]['backend_id']  = $acf_pro_fc_fields->post_name;
							}
							
						}
						
						if($get_sub_field_content['type'] == 'flexible_content'){
							$inner_flexi_query = $wpdb->get_results("SELECT ID, post_title, post_content, post_excerpt, post_name FROM {$wpdb->prefix}posts where post_status != 'trash' AND post_parent = $acf_pro_fc_fields->ID ");
							foreach($inner_flexi_query as $inner_flexi_values){
								$customFields["FC"][ $inner_flexi_values->post_name ]['label'] = $inner_flexi_values->post_title;
								//changed
								$customFields["FC"][ $inner_flexi_values->post_name ]['id']  = $inner_flexi_values->post_name;
								$customFields["FC"][ $inner_flexi_values->post_name ]['name']  = $inner_flexi_values->post_excerpt;
								$customFields["FC"][ $inner_flexi_values->post_name ]['backend_id']  = $inner_flexi_values->post_name;
							}
						}
					}
					foreach($flexible_fields as $flexible_id){
						
						$get_flexible_group = $wpdb->get_results("SELECT post_title , post_excerpt, post_name FROM {$wpdb->prefix}posts where post_status != 'trash' AND ID = $flexible_id");	
						foreach($get_flexible_group as $get_flexible_value){
							foreach($customFields["FC"] as $flexible_key => $flexible_value){
								$customFields["FC"][$get_flexible_value->post_excerpt]['label'] = $get_flexible_value->post_title;
							    //changed
								$customFields["FC"][$get_flexible_value->post_excerpt]['id']  = $get_flexible_value->post_name;
								$customFields["FC"][$get_flexible_value->post_excerpt]['name']  = $get_flexible_value->post_excerpt;
								$customFields["FC"][ $get_flexible_value->post_excerpt ]['backend_id']  = $get_flexible_value->post_name;
							}
						}	
					}
				}
			}
		}
		$requested_group_fields = array();

		if(!empty($customFields[$group]))
			$requested_group_fields[$group] = $customFields[$group];
			$acf_pro_value = $this->convert_fields_to_array($requested_group_fields);
			return $acf_pro_value;
			
	}

	public function fetchACFProRepeaterFields($repeater_field) {
		global $wpdb;
		$customFields = $rep_customFields = array();
		$repeater_field_arr = '';
		
		$get_sub_fields = $wpdb->get_results( $wpdb->prepare( "SELECT ID, post_title, post_content, post_excerpt, post_name FROM {$wpdb->prefix}posts where post_status != 'trash' and post_parent in (%s)", array($repeater_field) ) );
		
		foreach ( $get_sub_fields as $get_sub_key ) {
			$get_sub_field_content = unserialize( $get_sub_key->post_content );
			if ( $get_sub_field_content['type'] == 'repeater' || $get_sub_field_content['type'] == 'group') {
				$repeater_field_arr .= $get_sub_key->ID . ",";
			}
		}
		$repeater_field_arr = substr( $repeater_field_arr, 0, - 1 );
		$repeater_fields = explode(',', $repeater_field_arr);
		$repeater_field_placeholders = array_fill(0, count($repeater_fields), '%s');
		$placeholdersForRepeaterFields = implode(', ', $repeater_field_placeholders);
		if ( ! empty( $repeater_field_arr ) ) {
			$query = "SELECT ID, post_title, post_content, post_excerpt, post_name FROM {$wpdb->prefix}posts where post_parent in ($placeholdersForRepeaterFields)";
			$get_acf_repeater_fields = $wpdb->get_results( $wpdb->prepare( $query, $repeater_fields ) );
		}

		if ( ! empty( $get_acf_repeater_fields ) ) {
			foreach ( $get_acf_repeater_fields as $acf_pro_repeater_fields ) {
				$rep_customFields[ $acf_pro_repeater_fields->post_title ] = $acf_pro_repeater_fields->post_excerpt;
				$check_exist_key = "ACF: " . $acf_pro_repeater_fields->post_title;
				if ( array_key_exists( $check_exist_key, $customFields ) ) {
					unset( $customFields[ $check_exist_key ] );
				}
				$customFields[ $acf_pro_repeater_fields->post_name ]['label'] = $acf_pro_repeater_fields->post_title;
				$customFields[ $acf_pro_repeater_fields->post_name ]['name']  = $acf_pro_repeater_fields->post_excerpt;
			}
		}
		return $customFields;
	}
	/**
	* ACF Pro extension supported import types
	* @param string $import_type - selected import type
	* @return boolean
	*/
	public function extensionSupportedImportType($import_type){
		
		if(is_plugin_active('advanced-custom-fields-pro/acf.php')){
			if($import_type == 'nav_menu_item'){
				return false;
			}

			$import_type = $this->import_name_as($import_type);
			
			if($import_type =='Posts' || $import_type =='Pages' || $import_type =='CustomPosts' || $import_type =='Users' || $import_type =='WooCommerce'|| $import_type =='Taxonomies' || $import_type =='Tags' || $import_type =='Categories') {		
				return true;
			}
			else{
				return false;
			}
		}
	}
	
	
}