<?php

namespace wpie\export\user;

use WP_User_Query;

if ( ! defined( 'ABSPATH' ) ) {
        die( __( "Can't load this file directly", 'woo-import-export' ) );
}

if ( file_exists( WPIE_EXPORT_CLASSES_DIR . '/class-wpie-export-engine.php' ) ) {

        require_once(WPIE_EXPORT_CLASSES_DIR . '/class-wpie-export-engine.php');
}

class WPIE_User_Export extends \wpie\export\engine\WPIE_Export_Engine {

        private $item_where;
        private $item_join;

        public function __construct() {
                
        }

        protected function get_fields() {

                $standard_fields = array (
                        'title'     => __( "Standard", 'woo-import-export' ),
                        "isDefault" => true,
                        'data'      => array (
                                array (
                                        'name'      => 'ID',
                                        'type'      => 'id',
                                        'isDefault' => true
                                ),
                                array (
                                        'name'      => 'User Login',
                                        'type'      => 'user_login',
                                        'isDefault' => true
                                ),
                                array (
                                        'name'      => 'User Email',
                                        'type'      => 'user_email',
                                        'isDefault' => true
                                ),
                                array (
                                        'name'      => 'First Name',
                                        'type'      => 'first_name',
                                        'isDefault' => true
                                ),
                                array (
                                        'name'      => 'Last Name',
                                        'type'      => 'last_name',
                                        'isDefault' => true
                                ),
                                array (
                                        'name'      => 'User Registered',
                                        'type'      => 'user_registered',
                                        'isDate'    => true,
                                        'isDefault' => true
                                ),
                                array (
                                        'name'      => 'User Nicename',
                                        'type'      => 'user_nicename',
                                        'isDefault' => true
                                ),
                                array (
                                        'name'      => 'User URL',
                                        'type'      => 'user_url',
                                        'isDefault' => true
                                ),
                                array (
                                        'name'      => 'Display Name',
                                        'type'      => 'display_name',
                                        'isDefault' => true
                                ),
                                array (
                                        'name'      => 'Nickname',
                                        'type'      => 'nickname',
                                        'isDefault' => true
                                ),
                                array (
                                        'name'      => 'Description',
                                        'type'      => 'description',
                                        'isDefault' => true
                                )
                        )
                );

                $other_fields = array (
                        'title' => __( "Other", 'woo-import-export' ),
                        'data'  => array (
                                array (
                                        'name' => 'User Role',
                                        'type' => 'user_role',
                                ),
                                array (
                                        'name' => 'User Pass',
                                        'type' => 'user_pass',
                                ),
                                array (
                                        'name' => 'User Activation Key',
                                        'type' => 'user_activation_key',
                                ),
                                array (
                                        'name' => 'User Status',
                                        'type' => 'user_status',
                                )
                        )
                );

                $metas = apply_filters( 'wpie_pre_user_meta_fields', $this->get_meta_keys() );


                $export_fields = array (
                        "standard" => apply_filters( 'wpie_post_standard_fields', $standard_fields ),
                        "meta"     => apply_filters( 'wpie_post_meta_fields', $metas ),
                        "other"    => apply_filters( 'wpie_post_other_fields', $other_fields ),
                );

                $addon_class = apply_filters( 'wpie_prepare_user_fields', array (), $this->export_type );

                if ( ! empty( $addon_class ) ) {

                        foreach ( $addon_class as $addon ) {

                                if ( class_exists( $addon ) ) {

                                        $addon_data = new $addon();

                                        if ( method_exists( $addon_data, "pre_process_fields" ) ) {

                                                $addon_data->pre_process_fields( $export_fields, $this->export_type );
                                        }

                                        unset( $addon_data );
                                }
                        }
                }

                $meta_data = array ();

                if ( ! empty( $export_fields[ "meta" ] ) ) {
                        foreach ( $export_fields[ "meta" ] as $key ) {

                                if ( empty( trim( $key ) ) ) {
                                        continue;
                                }
                                $meta_data[] = apply_filters( "wpie_pre_item_meta", array (
                                        'name'    => $key,
                                        'type'    => "wpie_cf",
                                        'metaKey' => $key
                                        ), $key );
                        }
                }

                $meta_fields = array (
                        "title" => __( "User Meta", 'woo-import-export' ),
                        "data"  => $meta_data
                );

                $export_fields[ 'meta' ] = $meta_fields;

                unset( $standard_fields, $other_fields, $addon_class, $meta_data, $meta_fields );

                return apply_filters( "wpie_export_fields", $export_fields, $this->export_type );
        }

        private function get_meta_keys() {

                global $wpdb;

                $limit = apply_filters( 'wpie_usermeta_form_limit', 500 );

                $sql = "SELECT DISTINCT $wpdb->usermeta.meta_key
			FROM $wpdb->usermeta,$wpdb->users
                        WHERE $wpdb->usermeta.user_id = $wpdb->users.ID
			AND $wpdb->usermeta.meta_key NOT BETWEEN '_' AND '_z'
			HAVING $wpdb->usermeta.meta_key NOT LIKE %s
			ORDER BY $wpdb->usermeta.meta_key
			LIMIT %d";

                $keys = $wpdb->get_col( $wpdb->prepare( $sql, $wpdb->esc_like( '_' ) . '%', $limit ) );

                unset( $limit );

                unset( $sql );

                return $keys;
        }

        protected function parse_rule( $filter = array () ) {

                if ( isset( $filter[ 'element' ] ) ) {

                        global $wpdb;

                        $filter[ 'condition' ] = isset( $filter[ 'condition' ] ) ? $filter[ 'condition' ] : "";

                        $filter[ 'value' ] = isset( $filter[ 'value' ] ) ? $filter[ 'value' ] : "";

                        $filter[ 'clause' ] = isset( $filter[ 'clause' ] ) ? $filter[ 'clause' ] : "";

                        switch ( $filter[ 'element' ] ) {
                                case 'ID':
                                case 'id':
                                        $this->item_where[] = "{$wpdb->users}.{$filter[ 'element' ]} " . $this->add_filter_rule( $filter, true, false );
                                        break;
                                case 'user_role':
                                        $this->item_where[] = "{$wpdb->usermeta}.meta_key = '{$wpdb->prefix}capabilities' AND {$wpdb->usermeta}.meta_value " . $this->add_filter_rule( $filter, false, false );

                                        $this->item_join[] = " INNER JOIN {$wpdb->usermeta} ON ( {$wpdb->users}.ID = {$wpdb->usermeta}.user_id )";
                                        break;
                                case 'user_registered':
                                        $filter[ 'value' ] = $this->add_date_filter_rule( $filter );
                                        $this->item_where[] = "{$wpdb->users}.{$filter[ 'element' ]} " . $this->add_filter_rule( $filter, false, false );
                                        break;
                                case 'user_status':
                                case 'display_name':
                                case 'user_login':
                                case 'user_nicename':
                                case 'user_email':
                                case 'user_url':
                                        $this->item_where[] = "{$wpdb->users}.{$filter[ 'element' ]} " . $this->add_filter_rule( $filter, false, false );
                                        break;
                                default:
                                        if ( strpos( $filter[ 'element' ], "wpie_cf_" ) === 0 ) {

                                                $meta_key = $this->remove_prefix( $filter[ 'element' ], "wpie_cf_" );

                                                $table_alias = (count( $this->item_join ) > 0) ? 'meta' . count( $this->item_join ) : 'meta';

                                                if ( $filter[ 'condition' ] == 'is_empty' ) {

                                                        $this->item_join[] = " LEFT JOIN {$wpdb->usermeta} AS $table_alias ON ($table_alias.user_id = {$wpdb->users}.ID AND $table_alias.meta_key = '$meta_key') ";

                                                        $this->item_where[] = "$table_alias.meta_id " . $this->add_filter_rule( $filter, false, false );
                                                } else {

                                                        $this->item_join[] = " INNER JOIN {$wpdb->usermeta} AS $table_alias ON ({$wpdb->users}.ID = $table_alias.user_id) ";

                                                        $this->item_where[] = "$table_alias.meta_key = '$meta_key' AND $table_alias.meta_value " . $this->add_filter_rule( $filter, false, $table_alias );
                                                }

                                                unset( $meta_key );

                                                unset( $table_alias );
                                        }
                        }
                }
                unset( $filter );
        }

        protected function process_export() {

                $query = array (
                        'orderby' => 'ID',
                        'order'   => 'ASC',
                        'fields'  => 'ids',
                        'offset'  => isset( $this->process_log[ 'exported' ] ) ? absint( $this->process_log[ 'exported' ] ) : 0,
                        'number'  => isset( $this->template_options[ 'wpie_records_per_iteration' ] ) ? absint( $this->template_options[ 'wpie_records_per_iteration' ] ) : 50
                );

                if ( $this->opration == "count" || $this->opration == "ids" ) {
                        $query[ 'offset' ] = 0;
                        unset( $query[ 'number' ] );
                }

                $query = apply_filters( 'wpie_pre_execute_user_query', $query );

                add_action( 'pre_user_query', array ( $this, 'pre_user_query' ), 10, 1 );

                $user_result = new \WP_User_Query( $query );

                remove_action( 'pre_user_query', array ( $this, 'pre_user_query' ) );

                if ( $this->opration == "count" ) {
                        return count( $user_result->results );
                } elseif ( $this->opration == "ids" ) {
                        return $user_result->results;
                }

                $this->process_items( $user_result->results );

                unset( $query, $user_result );

                return true;
        }

        protected function process_items( $user_data = array () ) {

                $fields_data = (isset( $this->template_options[ 'fields_data' ] ) && trim( $this->template_options[ 'fields_data' ] ) != "") ? explode( "~||~", wpie_sanitize_field( wp_unslash( $this->template_options[ 'fields_data' ] ) ) ) : array ();

                if ( ! (empty( $user_data ) || empty( $fields_data )) ) {

                        if ( $this->addons && is_array( $this->addons ) ) {

                                foreach ( $this->addons as $addon ) {

                                        if ( method_exists( $addon, "init_export_process" ) ) {

                                                $addon->init_export_process( $post_data, $this->template_options, $this->export_id );
                                        }
                                }
                        }

                        $temp_field_count = 0;

                        global $wpie_export_id;

                        $wpie_export_id = 0;

                        foreach ( $user_data as $item_id ) {

                                $wpie_export_id = $item_id;

                                $item = get_user_by( 'id', absint( $item_id ) );

                                foreach ( $fields_data as $field ) {

                                        if ( empty( $field ) ) {
                                                continue;
                                        }

                                        $temp_field_count ++;

                                        $new_field = explode( "|~|", $field );

                                        $field_label = isset( $new_field[ 0 ] ) ? wpie_sanitize_field( $new_field[ 0 ] ) : "";

                                        $field_option = isset( $new_field[ 1 ] ) ? json_decode( wpie_sanitize_field( $new_field[ 1 ] ), true ) : "";

                                        unset( $new_field );

                                        $field_type = isset( $field_option[ 'type' ] ) ? wpie_sanitize_field( $field_option[ 'type' ] ) : "";

                                        $is_php = isset( $field_option[ 'isPhp' ] ) ? wpie_sanitize_field( $field_option[ 'isPhp' ] ) == 1 : false;

                                        $php_func = isset( $field_option[ 'phpFun' ] ) ? wpie_sanitize_field( $field_option[ 'phpFun' ] ) : "";

                                        $date_type = isset( $field_option[ 'dateType' ] ) ? wpie_sanitize_field( $field_option[ 'dateType' ] ) : "";

                                        $date_format = isset( $field_option[ 'dateFormat' ] ) ? wpie_sanitize_field( $field_option[ 'dateFormat' ] ) : "";

                                        $site_date_format = get_option( 'date_format' );

                                        $field_name = strtolower( preg_replace( "/[^a-zA-Z0-9]+/", "", $field_type . $field_label ) ) . $this->get_unique_str() . "_" . $temp_field_count;

                                        if ( $this->process_log[ 'exported' ] == 0 ) {
                                                $this->export_labels[ $field_name ] = $field_label;
                                        }
                                        if ( $this->process_log[ 'exported' ] == 0 ) {

                                                $this->export_labels[ $field_name ] = $field_label;

                                                if ( $this->addons && is_array( $this->addons ) ) {

                                                        foreach ( $this->addons as $addon ) {

                                                                if ( method_exists( $addon, "change_export_labels" ) ) {

                                                                        $addon->change_export_labels( $this->export_labels, $field_type, $field_name, $field_label, $field_option );
                                                                }
                                                        }
                                                }
                                        }
                                        if ( $this->addons && is_array( $this->addons ) ) {

                                                foreach ( $this->addons as $addon ) {

                                                        if ( method_exists( $addon, "pre_process_data" ) ) {

                                                                $addon->pre_process_data( $this->export_labels, $field_type, $field_name, $field_label );
                                                        }
                                                }
                                        }

                                        switch ( $field_type ) {

                                                case 'id':
                                                        $this->export_data[ $field_name ] = apply_filters( 'wpie_export_user_id', $this->apply_user_function( $item->ID, $is_php, $php_func ), $item );
                                                        break;
                                                case 'user_login':
                                                        $this->export_data[ $field_name ] = apply_filters( 'wpie_export_user_login', $this->apply_user_function( $item->user_login, $is_php, $php_func ), $item );
                                                        break;
                                                case 'user_pass':
                                                        $this->export_data[ $field_name ] = apply_filters( 'wpie_export_user_pass', $this->apply_user_function( $item->user_pass, $is_php, $php_func ), $item );
                                                        break;
                                                case 'user_email':
                                                        $this->export_data[ $field_name ] = apply_filters( 'wpie_export_user_email', $this->apply_user_function( $item->user_email, $is_php, $php_func ), $item );
                                                        break;
                                                case 'user_nicename':
                                                        $this->export_data[ $field_name ] = apply_filters( 'wpie_export_user_nicename', $this->apply_user_function( $item->user_nicename, $is_php, $php_func ), $item );
                                                        break;
                                                case 'user_url':
                                                        $this->export_data[ $field_name ] = apply_filters( 'wpie_export_user_url', $this->apply_user_function( $item->user_url, $is_php, $php_func ), $item );
                                                        break;
                                                case 'user_activation_key':
                                                        $this->export_data[ $field_name ] = apply_filters( 'wpie_export_user_activation_key', $this->apply_user_function( $item->user_activation_key, $is_php, $php_func ), $item );
                                                        break;
                                                case 'user_status':
                                                        $this->export_data[ $field_name ] = apply_filters( 'wpie_export_user_status', $this->apply_user_function( $item->user_status, $is_php, $php_func ), $item );
                                                        break;
                                                case 'display_name':
                                                        $this->export_data[ $field_name ] = apply_filters( 'wpie_export_user_display_name', $this->apply_user_function( $item->display_name, $is_php, $php_func ), $item );
                                                        break;
                                                case 'nickname':
                                                        $this->export_data[ $field_name ] = apply_filters( 'wpie_export_user_nickname', $this->apply_user_function( $item->nickname, $is_php, $php_func ), $item );
                                                        break;
                                                case 'first_name':
                                                        $this->export_data[ $field_name ] = apply_filters( 'wpie_export_user_first_name', $this->apply_user_function( $item->first_name, $is_php, $php_func ), $item );
                                                        break;
                                                case 'last_name':
                                                        $this->export_data[ $field_name ] = apply_filters( 'wpie_export_user_last_name', $this->apply_user_function( $item->last_name, $is_php, $php_func ), $item );
                                                        break;
                                                case 'user_role':
                                                        $this->export_data[ $field_name ] = apply_filters( 'wpie_export_user_role', $this->apply_user_function( implode( ",", $item->roles ), $is_php, $php_func ), $item );
                                                        break;
                                                case 'description':
                                                        $this->export_data[ $field_name ] = apply_filters( 'wpie_export_user_description', $this->apply_user_function( $item->description, $is_php, $php_func ), $item );
                                                        break;
                                                case 'user_registered':
                                                        $user_registered = $this->get_date_field( $date_type, strtotime( $item->user_registered ), $date_format, $site_date_format );
                                                        $this->export_data[ $field_name ] = apply_filters( 'wpie_export_user_registered', $this->apply_user_function( $user_registered, $is_php, $php_func ), $item );
                                                        break;
                                                case 'wpie_cf':

                                                        $meta_value = "";

                                                        $meta_key = isset( $field_option[ 'metaKey' ] ) ? wpie_sanitize_field( $field_option[ 'metaKey' ] ) : "";

                                                        if ( $meta_key != "" ) {

                                                                $user_metas = get_user_meta( $item->ID, $meta_key );

                                                                if ( ! empty( $user_metas ) && is_array( $user_metas ) ) {

                                                                        foreach ( $user_metas as $key => $_value ) {
                                                                                if ( empty( $meta_value ) ) {
                                                                                        $meta_value = maybe_serialize( $_value );
                                                                                } else {
                                                                                        $meta_value = $meta_value . maybe_serialize( $_value );
                                                                                }
                                                                        }
                                                                }
                                                                unset( $user_metas );
                                                        }

                                                        $this->export_data[ $field_name ] = apply_filters( 'wpie_export_user_meta', $this->apply_user_function( $meta_value, $is_php, $php_func ), $meta_key, $item );

                                                        unset( $meta_value, $meta_key );
                                                        break;


                                                default:
                                                        $defaults = apply_filters( 'wpie_export_pre_user_default_field', "", $field_name, $field_option, $item );

                                                        $this->export_data[ $field_name ] = apply_filters( 'wpie_export_user_default_field', $this->apply_user_function( $defaults, $is_php, $php_func ), $item );

                                                        unset( $defaults );

                                                        break;
                                        }
                                        if ( $this->addons && is_array( $this->addons ) ) {
                                                foreach ( $this->addons as $addon ) {
                                                        if ( method_exists( $addon, "process_addon_data" ) ) {
                                                                $addon->process_addon_data( $this->export_data, $field_type, $field_name, $field_option, $item, $site_date_format );
                                                        }
                                                }
                                        }

                                        unset( $field_label, $field_option, $field_type, $is_php, $php_func, $date_type, $date_format, $field_name );
                                }
                                if ( $this->addons && is_array( $this->addons ) ) {

                                        foreach ( $this->addons as $addon ) {

                                                if ( method_exists( $addon, "finalyze_export_process" ) ) {

                                                        $addon->finalyze_export_process( $this->export_data, $this->has_multiple_rows );
                                                }
                                        }
                                }

                                $this->process_data();

                                unset( $item );
                        }

                        $wpie_export_id = 0;
                }
                unset( $fields_data );
        }

        public function pre_user_query( $data ) {

                if ( ! empty( $this->item_join ) ) {
                        $data->query_from .= implode( ' ', array_unique( $this->item_join ) );
                }

                if ( ! empty( $this->item_where ) ) {

                        $query_where = preg_replace( array ( '%^ OR %', '%^ AND %' ), ' ', implode( ' ', $this->item_where ) );

                        $data->query_where .= " AND ( " . $query_where . ")";

                        unset( $query_where );
                }

                return $data;
        }

        public function __destruct() {
                foreach ( $this as $key => $value ) {
                        unset( $this->$key );
                }
        }

}
