<?php
/**
 * AJAX.
 *
 * @package documentor
 */

/**
 * Ajax Class
 */
class Documentor_Ajax {
	/**
	 * Post Type Object
	 *
	 * @var object
	 */
	public $post_type_object;

	/**
	 * Bind actions
	 */
	public function __construct() {
		add_action( 'wp_ajax_documentor_create_doc', array( $this, 'create_doc' ) );
		add_action( 'wp_ajax_documentor_clone_doc', array( $this, 'clone_doc' ) );
		add_action( 'wp_ajax_documentor_remove_doc', array( $this, 'remove_doc' ) );
		add_action( 'wp_ajax_documentor_export_doc', array( $this, 'export_doc' ) );
		add_action( 'wp_ajax_documentor_admin_get_docs', array( $this, 'get_docs' ) );
		add_action( 'wp_ajax_documentor_sortable_docs', array( $this, 'sort_docs' ) );
		add_action( 'wp_ajax_documentor_ajax_template_import', array( $this, 'ajax_template_import' ) );
		add_action( 'wp_ajax_documentor_ajax_template_part', array( $this, 'ajax_template_part' ) );
		add_action( 'wp_ajax_documentor_ajax_sidebar', array( $this, 'ajax_sidebar' ) );

		// feedback.
		add_action( 'wp_ajax_documentor_ajax_feedback', array( $this, 'handle_feedback' ) );
		add_action( 'wp_ajax_nopriv_documentor_ajax_feedback', array( $this, 'handle_feedback' ) );

		// feedback suggestion.
		add_action( 'wp_ajax_documentor_ajax_feedback_suggestion', array( $this, 'handle_feedback_suggestion' ) );
		add_action( 'wp_ajax_nopriv_documentor_ajax_feedback_suggestion', array( $this, 'handle_feedback_suggestion' ) );
	}

	/**
	 * Get post type object with caps.
	 *
	 * @return object
	 */
	public function get_post_type_object() {
		if ( ! $this->post_type_object ) {
			$this->post_type_object = get_post_type_object( 'docs' );
		}
		return $this->post_type_object;
	}

	/**
	 * Get post data to use in Vue.
	 *
	 * @param object $post - post data.
	 *
	 * @return array
	 */
	public function get_post_data( $post ) {
		$cat_id   = 0;
		$cat_name = '';

		// get category.
		$terms = wp_get_post_terms( $post->ID, 'docs_category' );
		if ( ! empty( $terms ) && isset( $terms[0] ) ) {
			$cat_id   = $terms[0]->term_id;
			$cat_name = $terms[0]->name;
		}

		return array(
			'id'	   => $post->ID,
			'title'	=> $post->post_title,
			'name'	 => $post->post_name,
			'status'   => $post->post_status,
			'thumb'	=> get_the_post_thumbnail_url( $post, 'documentor_archive_sm' ),
			'order'	=> $post->menu_order,
			'cat_id'   => $cat_id,
			'cat_name' => $cat_name,
			'caps'	 => array(
				'edit'   => current_user_can( $this->get_post_type_object()->cap->edit_post, $post->ID ),
				'delete' => current_user_can( $this->get_post_type_object()->cap->delete_post, $post->ID ),
			),
		);
	}

	/**
	 * Create a new doc
	 *
	 * @return void
	 */
	public function create_doc() {
		check_ajax_referer( 'documentor-admin-nonce' );

		$title  = isset( $_POST['title'] ) ? sanitize_text_field( wp_unslash( $_POST['title'] ) ) : '';
		$status = isset( $_POST['status'] ) ? sanitize_text_field( wp_unslash( $_POST['status'] ) ) : 'publish';
		$parent = isset( $_POST['parent'] ) ? absint( $_POST['parent'] ) : 0;
		$order  = isset( $_POST['order'] ) ? absint( $_POST['order'] ) : 0;

		if ( ! current_user_can( $this->get_post_type_object()->cap->publish_posts ) ) {
			$status = 'pending';
		}

		$post_id = wp_insert_post(
			array(
				'post_title'  => $title,
				'post_type'   => 'docs',
				'post_status' => $status,
				'post_parent' => $parent,
				'post_author' => get_current_user_id(),
				'menu_order'  => $order,
			)
		);

		if ( is_wp_error( $post_id ) ) {
			wp_send_json_error();
		}

		$post = get_post( $post_id );
		wp_send_json_success(
			array(
				'post'  => $this->get_post_data( $post ),
				'child' => array(),
			)
		);
	}

	/**
	 * Clone a doc
	 *
	 * @return void
	 */
	public function clone_doc() {
		check_ajax_referer( 'documentor-admin-nonce' );

		$title	  = isset( $_POST['title'] ) ? sanitize_text_field( wp_unslash( $_POST['title'] ) ) : '';
		$clone_from = isset( $_POST['clone_from'] ) ? absint( $_POST['clone_from'] ) : 0;

		$result = array();

		if ( $clone_from ) {
			$clone_from_post = get_post( $clone_from );

			if ( is_wp_error( $clone_from_post ) ) {
				wp_send_json_error();
			}

			$clone_post_meta = get_post_custom( $clone_from_post->ID );

			$new_post_id = wp_insert_post(
				array(
					'post_title'			=> $title,
					'post_type'			 => 'docs',
					'post_status'		   => 'publish',
					'post_content'		  => $clone_from_post->post_content,
					'post_content_filtered' => $clone_from_post->post_content_filtered,
					'post_excerpt'		  => $clone_from_post->post_excerpt,
					'post_author'		   => get_current_user_id(),
					'comment_status'		=> $clone_from_post->comment_status,
					'ping_status'		   => $clone_from_post->ping_status,
					'to_ping'			   => $clone_from_post->to_ping,
				)
			);

			if ( is_wp_error( $new_post_id ) ) {
				wp_send_json_error();
			}

			// Copy post metadata.
			foreach ( $clone_post_meta as $key => $values ) {
				if ( 'positive' === $key || 'negative' === $key ) {
					continue;
				}

				foreach ( $values as $value ) {
					add_post_meta( $new_post_id, $key, $value );
				}
			}

			$new_post = get_post( $new_post_id );

			$result = array(
				'post'  => $this->get_post_data( $new_post ),
				'child' => $this->clone_child_docs( $clone_from_post->ID, $new_post_id ),
			);
		}

		wp_send_json_success( $result );
	}

	/**
	 * Clone child docs.
	 *
	 * @param int $clone_from - post id.
	 * @param int $clone_to - post id.
	 *
	 * @return array
	 */
	public function clone_child_docs( $clone_from, $clone_to ) {
		$childrens = new WP_Query(
			array(
				'post_type'	  => 'docs',
				'posts_per_page' => -1, // phpcs:ignore
				'post_parent'	=> $clone_from,
				'orderby'		=> array(
					'menu_order' => 'ASC',
					'date'	   => 'DESC',
				),
			)
		);
		$result	= array();

		while ( $childrens->have_posts() ) :
			$childrens->the_post();
			$clone_from_post = $childrens->post;

			if ( is_wp_error( $clone_from_post ) ) {
				wp_send_json_error();
			}

			$clone_post_meta = get_post_custom( $clone_from_post->ID );

			$new_post_id = wp_insert_post(
				array(
					'post_title'			=> $clone_from_post->post_title,
					'post_type'			 => $clone_from_post->post_type,
					'post_status'		   => $clone_from_post->post_status,
					'post_content'		  => $clone_from_post->post_content,
					'post_content_filtered' => $clone_from_post->post_content_filtered,
					'post_excerpt'		  => $clone_from_post->post_excerpt,
					'post_author'		   => get_current_user_id(),
					'post_parent'		   => $clone_to,
					'menu_order'			=> $clone_from_post->menu_order,
					'comment_status'		=> $clone_from_post->comment_status,
					'ping_status'		   => $clone_from_post->ping_status,
					'to_ping'			   => $clone_from_post->to_ping,
				)
			);

			if ( is_wp_error( $new_post_id ) ) {
				wp_send_json_error();
			}

			// Copy post metadata.
			foreach ( $clone_post_meta as $key => $values ) {
				if ( 'positive' === $key || 'negative' === $key ) {
					continue;
				}

				foreach ( $values as $value ) {
					add_post_meta( $new_post_id, $key, $value );
				}
			}

			$new_post = get_post( $new_post_id );

			// add new subitems.
			$result[] = array(
				'post'  => $this->get_post_data( $new_post ),
				'child' => $this->clone_child_docs( $clone_from_post->ID, $new_post_id ),
			);
		endwhile;
		wp_reset_postdata();

		return $result;
	}

	/**
	 * Delete a doc
	 *
	 * @return void
	 */
	public function remove_doc() {
		check_ajax_referer( 'documentor-admin-nonce' );

		$force_delete = false;
		$post_id	  = isset( $_POST['id'] ) ? absint( $_POST['id'] ) : 0;

		if ( ! current_user_can( 'delete_post', $post_id ) ) {
			wp_send_json_error( __( 'You are not allowed to delete this item.', 'documentor' ) );
		}

		if ( $post_id ) {
			// delete childrens first if found.
			$this->remove_child_docs( $post_id, $force_delete );

			// delete main doc.
			wp_delete_post( $post_id, $force_delete );
		}

		wp_send_json_success();
	}

	/**
	 * Remove child docs
	 *
	 * @param integer $parent_id - post id.
	 * @param boolean $force_delete - force delete.
	 */
	public function remove_child_docs( $parent_id = 0, $force_delete ) {
		$childrens = get_children( array( 'post_parent' => $parent_id ) );

		if ( $childrens ) {
			foreach ( $childrens as $child_post ) {
				// recursively delete.
				$this->remove_child_docs( $child_post->ID, $force_delete );

				wp_delete_post( $child_post->ID, $force_delete );
			}
		}
	}

	/**
	 * Export as HTML
	 *
	 * @return void
	 */
	public function export_doc() {
		// phpcs:ignore
		$doc_id = isset( $_GET['doc_id'] ) ? absint( $_GET['doc_id'] ) : 0;

		if ( $doc_id ) {
			include_once dirname( __FILE__ ) . '/class-export.php';
			$export_class = new Documentor_Export();
			$export_class->run( $doc_id );
		}

		exit;
	}

	/**
	 * Get all docs
	 *
	 * @return void
	 */
	public function get_docs() {
		check_ajax_referer( 'documentor-admin-nonce' );

		$docs = new WP_Query(
			array(
				'post_type'	  => 'docs',
				'post_status'	=> array( 'publish', 'draft', 'pending' ),
				'posts_per_page' => -1, // phpcs:ignore
				'orderby'		=> array(
					'menu_order' => 'ASC',
					'date'	   => 'DESC',
				),
			)
		);

		$arranged = $this->build_tree( $docs->posts );

		wp_send_json_success( $arranged );
	}

	/**
	 * Store feedback for an article
	 *
	 * @return void
	 */
	public function handle_feedback() {
		check_ajax_referer( 'documentor-ajax' );

		$previous = array();

		if ( isset( $_COOKIE['documentor_response'] ) ) {
			$cookies_data = explode( ',', sanitize_text_field( wp_unslash( $_COOKIE['documentor_response'] ) ) );

			foreach ( $cookies_data as $data ) {
				$id = explode( '|', $data );

				if ( isset( $id[0] ) ) {
					$previous[ (string) $id[0] ] = isset( $id[1] ) ? $id[1] : 'unknown';
				}
			}
		}

		$post_id = isset( $_POST['post_id'] ) ? (string) sanitize_text_field( wp_unslash( $_POST['post_id'] ) ) : 0;
		$type	= isset( $_POST['type'] ) ? sanitize_text_field( wp_unslash( $_POST['type'] ) ) : false;

		if ( $type && ! in_array( $type, array( 'positive', 'negative' ), true ) ) {
			$type = false;
		}

		// check previous response.
		if (
			isset( $previous[ $post_id ] ) &&
			(
				'unknown' === $previous[ $post_id ] ||
				$type === $previous[ $post_id ]
			)
		) {
			$message = __( 'Sorry, you\'ve already recorded your feedback!', 'documentor' );
			wp_send_json_error( $message );
		}

		// seems new.
		if ( $type ) {
			$count = (int) get_post_meta( $post_id, $type, true );
			update_post_meta( $post_id, $type, $count + 1 );

			// remove previous feedback.
			if ( isset( $previous[ $post_id ] ) && 'unknown' !== $previous[ $post_id ] ) {
				$count = (int) get_post_meta( $post_id, $previous[ $post_id ], true );
				update_post_meta( $post_id, $previous[ $post_id ], $count - 1 );
			}

			$previous[ $post_id ] = $post_id . '|' . $type;
			$cookie_val		   = implode( ',', $previous );

			setcookie( 'documentor_response', $cookie_val, time() + WEEK_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN );
		}

		$message = __( 'Thank you for feedback!', 'documentor' );
		wp_send_json_success( $message );
	}

	/**
	 * Prepare feedback suggestion to email.
	 */
	public function handle_feedback_suggestion() {
		check_ajax_referer( 'documentor-ajax' );

		$email = documentor()->get_option( 'show_feedback_suggestion_email', 'documentor_single', '' );

		if ( ! $email ) {
			$email = get_option( 'admin_email' );
		}

		if ( ! $email ) {
			$response = __( 'Sorry, something went wrong on the server side!', 'documentor' );
			wp_send_json_error( $response );
			return;
		}

		$post_id	   = isset( $_POST['post_id'] ) ? absint( $_POST['post_id'] ) : 0;
		$post		  = $post_id ? get_post( $post_id ) : false;
		$feedback_type = isset( $_POST['feedback_type'] ) ? sanitize_text_field( wp_unslash( $_POST['feedback_type'] ) ) : '';
		$suggestion	= isset( $_POST['suggestion'] ) ? nl2br( htmlspecialchars( wp_unslash( $_POST['suggestion'] ) ) ) : ''; // phpcs:ignore
		$from		  = isset( $_POST['from'] ) && ! empty( $_POST['from'] ) ? sanitize_text_field( wp_unslash( $_POST['from'] ) ) : '';

		if ( $post && $feedback_type && $suggestion ) {
			$is_sent = Documentor_Suggestion::send(
				array(
					'post'		  => $post,
					'from'		  => $from,
					'feedback_type' => $feedback_type,
					'suggestion'	=> $suggestion,
				)
			);

			if ( ! $is_sent ) {
				$response = __( 'Sorry, something went wrong with the mail server, your suggestions were not sent!', 'documentor' );
				wp_send_json_error( $response );
				return;
			}
		}

		$response = __( 'Thank you for suggestions!', 'documentor' );
		wp_send_json_success( $response );
	}

	/**
	 * Sort docs
	 *
	 * @return void
	 */
	public function sort_docs() {
		check_ajax_referer( 'documentor-admin-nonce' );

		$doc_ids = isset( $_POST['ids'] ) ? array_map( 'absint', $_POST['ids'] ) : array();

		if ( $doc_ids ) {
			foreach ( $doc_ids as $order => $id ) {
				wp_update_post(
					array(
						'ID'		 => $id,
						'menu_order' => $order,
					)
				);
			}
		}

		exit;
	}

	/**
	 * Build a tree of docs with parent-child relation
	 *
	 * @param  array   $docs - docs list.
	 * @param  integer $parent - post id.
	 *
	 * @return array
	 */
	public function build_tree( $docs, $parent = 0 ) {
		$result = array();

		if ( ! $docs ) {
			return $result;
		}

		foreach ( $docs as $key => $doc ) {
			if ( (int) $doc->post_parent === (int) $parent ) {
				unset( $docs[ $key ] );

				$cat_id   = 0;
				$cat_name = '';

				// get category.
				$terms = wp_get_post_terms( $doc->ID, 'docs_category' );
				if ( ! empty( $terms ) && isset( $terms[0] ) ) {
					$cat_id   = $terms[0]->term_id;
					$cat_name = $terms[0]->name;
				}

				// build tree and sort.
				$child = $this->build_tree( $docs, $doc->ID );

				$result[] = array(
					'post'  => $this->get_post_data( $doc ),
					'child' => $child,
				);
			}
		}

		return $result;
	}

	/**
	 * Sort callback for sorting posts with their menu order
	 *
	 * @param array $a - 1 post.
	 * @param array $b - 2 post.
	 *
	 * @return int
	 */
	public function sort_callback( $a, $b ) {
		return $a['post']['order'] - $b['post']['order'];
	}

	public function ajax_template_part(){

		check_ajax_referer('pagelayer_ajax', 'pagelayer_nonce');

		pagelayer_load_shortcodes();

		$tags = ['pl_dm_feedback','pl_dm_article','pl_dm_breadcrumbs','pl_dm_adjacent_links','pl_dm_archive_box'];
		
		if(!in_array($_POST['template_name'], $tags)){
			return false;
		}

		$content = get_comment_delimited_block_content( 'pagelayer/'.$_POST['template_name'], $_POST['data'] , '');
		$wp['posts'] = pagelayer_the_content($content);
		pagelayer_json_output( $wp );
		wp_die();
	}

	public function ajax_template_import(){
		check_ajax_referer('documentor_nonce', '_wpnonce');
		
		include_once documentor()->plugin_path.'includes/template.php';
		
		documentor_import_template_content( json_decode(documentor_get_conf(),true), documentor_get_content(),$_POST['atemplate']);
		wp_die();
	}

	//Taking more time to load with do shortcode
	public function ajax_sidebar(){

		check_ajax_referer('pagelayer_ajax', 'pagelayer_nonce');
   
		$nav_list = wp_list_pages(
			array(
				  'title_li'  => '',
				  'order'	 => 'menu_order',
				  'child_of'  => !$_POST['data']['hide_parent'] ? 0 : documentor()->get_current_doc_id(),
				  'echo'	  => false,
				  'post_type' => 'docs',
				  'walker'	=> new Documentor_Walker_Docs(),
			)
		 );
	  
		 if ( $nav_list ) {
		 
			$html  = '<a class="documentor-sidebar-toggler"><i class="fas fa-times"></i></a>';
			$html .= '<ul class="documentor-nav-list'.( $_POST['data']['show_child'] ? ' documentor-nav-list-show-childs' : '' ) .'">';
			$html .=  $nav_list;
			$html .= '</ul>';
		 } 
		   
		$wp['posts'] = $html;
		pagelayer_json_output( $wp );
		wp_die();
	 }
}

new Documentor_Ajax();