<?php

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/**

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* Handles importing sample themes.

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*

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* @link https://themify.me/

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* @since 1.0.0

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*

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* @package Tbp

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* @subpackage Tbp/admin

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*/

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/**

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*

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*

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* @package Tbp

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* @subpackage Tbp/admin

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* @author Themify <themify@themify.me>

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*/

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final class Tbp_Import_Demo {

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public static function run() {

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add_action( 'wp_ajax_tbp_import_term', array( __CLASS__, 'wp_ajax_tbp_import_term' ) );

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add_action( 'wp_ajax_tbp_import_post', array( __CLASS__, 'wp_ajax_tbp_import_post' ) );

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add_action( 'wp_ajax_tbp_import_thumbnail', array( __CLASS__, 'wp_ajax_tbp_import_thumbnail' ) );

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add_action( 'admin_init', array( __CLASS__, 'admin_init' ) );

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}

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public static function admin_init() {

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if ( isset( $_REQUEST['page'] ) && !empty( $_GET['tbp_erase_demo'] ) && $_REQUEST['page'] === Tbp_Themes::$post_type ) {

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self::erase_demo();

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}

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}

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public static function wp_ajax_tbp_import_term() {

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$term = $_POST['term'];

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$old_id = $term['term_id'];

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if ( $term_id = term_exists( $term['slug'], $term['taxonomy'] ) ) {

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if ( is_array( $term_id ) ) $term_id = $term_id['term_id'];

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if ( isset( $term['term_id'] ) ) {

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update_term_meta( $term_id, '_tbp_demo_id', $old_id );

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wp_send_json_error();

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}

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}

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if ( empty( $term['parent'] ) ) {

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$parent = 0;

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} else {

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$new_id = self::get_term_by_old_id( $term['parent'] );

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$parent = term_exists( $new_id, $term['taxonomy'] );

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if ( is_array( $parent ) ) $parent = $parent['term_id'];

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}

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$id = wp_insert_term( $term['name'], $term['taxonomy'], array(

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'parent' => $parent,

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'slug' => $term['slug'],

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'description' => $term['description'],

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) );

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if ( ! is_wp_error( $id ) ) {

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update_term_meta( $id['term_id'], '_tbp_demo_id', $old_id );

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wp_send_json_success( array(

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'oid' => $old_id, // original ID

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'id' => $id['term_id'],

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'type' => 'term'

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) );

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} else {

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wp_send_json_error( $id );

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}

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die;

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}

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public static function wp_ajax_tbp_import_post() {

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$post = $_POST['post'];

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$old_id = $post['ID'];

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$post['post_author'] = (int) get_current_user_id();

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$post['post_status'] = 'publish';

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unset( $post['ID'] );

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if ( ! post_type_exists( $post['post_type'] ) ) {

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wp_send_json_error();

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}

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/* Menu items don't have reliable post_title, skip the post_exists check */

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/* With tbp_template, different Themes can have duplicate templates so skip post_exists */

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if ( $post['post_type'] !== 'nav_menu_item' && $post['post_type'] !== 'tbp_template' ) {

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$post_exists = post_exists( $post['post_title'], '', $post['post_date'] );

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if ( $post_exists && get_post_type( $post_exists ) === $post['post_type'] ) {

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update_post_meta( $post_id, '_tbp_demo_id', $old_id );

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wp_send_json_success( array(

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'oid' => $old_id, // original ID

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'id' => $post_exists,

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'type' => 'post'

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) );

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}

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}

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if ( $post['post_type'] === 'nav_menu_item' ) {

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if ( ! isset( $post['tax_input']['nav_menu'] ) || ! term_exists( $post['tax_input']['nav_menu'], 'nav_menu' ) ) {

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wp_send_json_error();

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}

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$_menu_item_type = $post['meta_input']['_menu_item_type'];

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$_menu_item_object_id = $post['meta_input']['_menu_item_object_id'];

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if ( 'taxonomy' === $_menu_item_type ) {

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$new_id = self::get_term_by_old_id( intval( $_menu_item_object_id ) );

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if ( $new_id ) {

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$post['meta_input']['_menu_item_object_id'] = $new_id;

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}

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} elseif ( 'post_type' === $_menu_item_type ) {

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$new_id = self::get_post_by_old_id( intval( $_menu_item_object_id ) );

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if ( $new_id ) {

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$post['meta_input']['_menu_item_object_id'] = $new_id;

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}

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}

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}

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$post_parent = ( $post['post_type'] == 'nav_menu_item' ) ? $post['meta_input']['_menu_item_menu_item_parent'] : (int) $post['post_parent'];

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$post['post_parent'] = 0;

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if ( $post_parent ) {

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// if we already know the parent, map it to the new local ID

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$new_id = self::get_post_by_old_id( $post_parent );

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if ( $new_id ) {

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if( $post['post_type'] === 'nav_menu_item' ) {

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$post['meta_input']['_menu_item_menu_item_parent'] = $new_id;

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} else {

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$post['post_parent'] = $new_id;

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}

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}

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}

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/**

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* for hierarchical taxonomies, IDs must be used so wp_set_post_terms can function properly

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* convert term slugs to IDs for hierarchical taxonomies

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*/

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if ( ! empty( $post['tax_input'] ) ) {

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foreach( $post['tax_input'] as $tax => $terms ) {

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if ( ! taxonomy_exists( $tax ) ) {

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unset( $post['tax_input'][ $tax ] );

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continue;

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}

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if( is_taxonomy_hierarchical( $tax ) ) {

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$terms = explode( ', ', $terms );

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$post['tax_input'][ $tax ] = array_map( 'self::get_term_id_by_slug', $terms, array_fill( 0, count( $terms ), $tax ) );

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}

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}

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}

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$post_id = wp_insert_post( $post, true );

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if ( is_wp_error( $post_id ) ) {

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wp_send_json_error( $post_id );

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} else {

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update_post_meta( $post_id, '_tbp_demo_id', $old_id );

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// download featured image

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if ( isset( $post['thumb'] ) ) {

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$fetch = self::fetch_remote_file( $post['thumb'], $post_id );

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if ( ! is_wp_error( $fetch ) ) {

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set_post_thumbnail( $post_id, $fetch );

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}

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}

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// Home page

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if ( isset( $post['is_home'] ) ) {

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update_option( 'show_on_front', 'page' );

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update_option( 'page_on_front', $post_id );

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}

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if ( $post['post_type'] === 'tbp_theme' ) {

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Tbp_Utils::set_active_theme( $post_id );

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}

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elseif ( $post['post_type'] === 'tbp_template' ) {

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$theme = (int) sanitize_text_field( $_POST['theme_id'] );

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$theme_post = get_post( $theme );

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update_post_meta( $post_id, 'tbp_associated_theme', $theme_post->post_name );

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}

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wp_send_json_success( array(

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'oid' => $old_id, // original ID

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'id' => $post_id,

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'type' => 'post'

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) );

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}

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}

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public static function wp_ajax_tbp_import_thumbnail() {

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$post_id = (int) $_POST['post_id'];

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$url = sanitize_text_field( $_POST['thumb'] );

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$fetch = self::fetch_remote_file( $url, $post_id );

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if ( is_wp_error( $fetch ) ) {

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wp_send_json_error( $fetch );

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}

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set_post_thumbnail( $post_id, $fetch );

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wp_send_json_success();

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}

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/**

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* Remove all demo posts, signified by the existence of _tbp_demo_id meta

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*

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* @return null

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*/

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private static function erase_demo() {

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$terms = get_terms( array(

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'taxonomy' => null,

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'hide_empty' => false,

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'number' => 0,

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'meta_query' => array(

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array(

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'key' => '_tbp_demo_id',

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'compare' => 'EXISTS'

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),

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),

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'suppress_filters' => true,

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) );

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foreach ( $terms as $term ) {

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wp_delete_term( $term->term_id, $term->taxonomy );

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}

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$posts = get_posts( array(

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'posts_per_page' => -1,

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'post_type' => 'any',

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'posts_status' => 'any',

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'meta_query' => array(

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array(

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'key' => '_tbp_demo_id',

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'compare' => 'EXISTS'

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),

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),

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'suppress_filters' => true,

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'fields' => 'ids',

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) );

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foreach ( $posts as $post_id ) {

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wp_delete_post( $post_id, true );

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}

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}

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/**

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* Recieves a post_id from sample file and returns the same post that has been imported into the site

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*

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* @return int|bool

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*/

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private static function get_post_by_old_id( $old_id ) {

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global $wpdb;

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$result = $wpdb->get_results( $wpdb->prepare(

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"SELECT post_id FROM {$wpdb->postmeta} WHERE meta_key = '_tbp_demo_id' AND meta_value = %d LIMIT 1",

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$old_id

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), ARRAY_A );

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if ( isset( $result[0]['post_id'] ) ) {

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return $result[0]['post_id'];

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}

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return false;

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}

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private static function get_term_by_old_id( $old_id ) {

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global $wpdb;

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$result = $wpdb->get_results( $wpdb->prepare(

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"SELECT post_id FROM {$wpdb->termmeta} WHERE meta_key = '_tbp_demo_id' AND meta_value = %d LIMIT 1",

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$old_id

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), ARRAY_A );

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if ( isset( $result[0]['term_id'] ) ) {

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return $result[0]['term_id'];

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}

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return false;

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}

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/**

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* Download an image from external URL and returns the file

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*

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* @param $post_id Attachments may be associated with a parent post or page.

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*

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* @return WP_Error|int ID of created attachment, or WP_Error

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*/

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private static function fetch_remote_file( $url, $post_id = null ) {

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// extract the file name and extension from the url

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$file_name = basename( $url );

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// get placeholder file in the upload dir with a unique, sanitized filename

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$upload = wp_upload_bits( $file_name, 0, '' );

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if ( $upload['error'] )

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return new WP_Error( 'upload_dir_error', $upload['error'] );

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// fetch the remote url and write it to the placeholder file

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$remote_response = wp_safe_remote_get( $url, array(

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'timeout' => 300,

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'stream' => true,

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'filename' => $upload['file'],

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) );

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$headers = wp_remote_retrieve_headers( $remote_response );

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// request failed

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if ( ! $headers ) {

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@unlink( $upload['file'] );

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return new WP_Error( 'import_file_error', __('Remote server did not respond', 'tbp') );

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}

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$remote_response_code = wp_remote_retrieve_response_code( $remote_response );

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// make sure the fetch was successful

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if ( $remote_response_code != '200' ) {

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@unlink( $upload['file'] );

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return new WP_Error( 'import_file_error', sprintf( __('Remote server returned error response %1$d %2$s', 'tbp'), esc_html( $remote_response_code ), get_status_header_desc( $remote_response_code ) ) );

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}

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$filesize = filesize( $upload['file'] );

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if ( isset( $headers['content-length'] ) && $filesize != $headers['content-length'] ) {

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/* note: this is intentionally disabled, if gZip is enabled, $headers['content-length'] and $filesize do not necessarily match */

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}

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if ( 0 == $filesize ) {

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@unlink( $upload['file'] );

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return new WP_Error( 'import_file_error', __('Zero size file downloaded', 'tbp') );

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}

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$post = array(

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'post_title' => '',

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'post_content' => '',

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'post_status' => 'inherit',

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);

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if ( $info = wp_check_filetype( $upload['file'] ) )

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$post['post_mime_type'] = $info['type'];

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else

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return new WP_Error( 'mime_type_error', __('Invalid file type', 'tbp') );

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$attach_id = wp_insert_attachment( $post, $upload['file'], $post_id );

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wp_update_attachment_metadata( $attach_id, wp_generate_attachment_metadata( $attach_id, $upload['file'] ) );

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return $attach_id;

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}

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public static function get_term_id_by_slug( $slug, $tax ) {

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$term = get_term_by( 'slug', $slug, $tax );

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if( $term ) {

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return $term->term_id;

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}

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return false;

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}

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}

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