<?php

/**

 * WordPress Comment Administration API.

 *

 * @package WordPress

 * @subpackage Administration

 * @since 2.3.0

 */

/**

 * Determine if a comment exists based on author and date.

 *

 * For best performance, use `$timezone = 'gmt'`, which queries a field that is properly indexed. The default value

 * for `$timezone` is 'blog' for legacy reasons.

 *

 * @since 2.0.0

 * @since 4.4.0 Added the `$timezone` parameter.

 *

 * @global wpdb $wpdb WordPress database abstraction object.

 *

 * @param string $comment_author Author of the comment.

 * @param string $comment_date   Date of the comment.

 * @param string $timezone       Timezone. Accepts 'blog' or 'gmt'. Default 'blog'.

 *

 * @return mixed Comment post ID on success.

 */

function comment_exists( $comment_author, $comment_date, $timezone = 'blog' ) {

	global $wpdb;

	$date_field = 'comment_date';

	if ( 'gmt' === $timezone ) {

		$date_field = 'comment_date_gmt';

	}

	return $wpdb->get_var(

		$wpdb->prepare(

			"SELECT comment_post_ID FROM $wpdb->comments

			WHERE comment_author = %s AND $date_field = %s",

			stripslashes( $comment_author ),

			stripslashes( $comment_date )

		)

	);

}

/**

 * Update a comment with values provided in $_POST.

 *

 * @since 2.0.0

 */

function edit_comment() {

	if ( ! current_user_can( 'edit_comment', (int) $_POST['comment_ID'] ) ) {

		wp_die( __( 'Sorry, you are not allowed to edit comments on this post.' ) );

	}

	if ( isset( $_POST['newcomment_author'] ) ) {

		$_POST['comment_author'] = $_POST['newcomment_author'];

	}

	if ( isset( $_POST['newcomment_author_email'] ) ) {

		$_POST['comment_author_email'] = $_POST['newcomment_author_email'];

	}

	if ( isset( $_POST['newcomment_author_url'] ) ) {

		$_POST['comment_author_url'] = $_POST['newcomment_author_url'];

	}

	if ( isset( $_POST['comment_status'] ) ) {

		$_POST['comment_approved'] = $_POST['comment_status'];

	}

	if ( isset( $_POST['content'] ) ) {

		$_POST['comment_content'] = $_POST['content'];

	}

	if ( isset( $_POST['comment_ID'] ) ) {

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

	}

	foreach ( array( 'aa', 'mm', 'jj', 'hh', 'mn' ) as $timeunit ) {

		if ( ! empty( $_POST[ 'hidden_' . $timeunit ] ) && $_POST[ 'hidden_' . $timeunit ] != $_POST[ $timeunit ] ) {

			$_POST['edit_date'] = '1';

			break;

		}

	}

	if ( ! empty( $_POST['edit_date'] ) ) {

		$aa                    = $_POST['aa'];

		$mm                    = $_POST['mm'];

		$jj                    = $_POST['jj'];

		$hh                    = $_POST['hh'];

		$mn                    = $_POST['mn'];

		$ss                    = $_POST['ss'];

		$jj                    = ( $jj > 31 ) ? 31 : $jj;

		$hh                    = ( $hh > 23 ) ? $hh - 24 : $hh;

		$mn                    = ( $mn > 59 ) ? $mn - 60 : $mn;

		$ss                    = ( $ss > 59 ) ? $ss - 60 : $ss;

		$_POST['comment_date'] = "$aa-$mm-$jj $hh:$mn:$ss";

	}

	wp_update_comment( $_POST );

}

/**

 * Returns a WP_Comment object based on comment ID.

 *

 * @since 2.0.0

 *

 * @param int $id ID of comment to retrieve.

 * @return WP_Comment|false Comment if found. False on failure.

 */

function get_comment_to_edit( $id ) {

	if ( ! $comment = get_comment( $id ) ) {

		return false;

	}

	$comment->comment_ID      = (int) $comment->comment_ID;

	$comment->comment_post_ID = (int) $comment->comment_post_ID;

	$comment->comment_content = format_to_edit( $comment->comment_content );

	/**

	 * Filters the comment content before editing.

	 *

	 * @since 2.0.0

	 *

	 * @param string $comment->comment_content Comment content.

	 */

	$comment->comment_content = apply_filters( 'comment_edit_pre', $comment->comment_content );

	$comment->comment_author       = format_to_edit( $comment->comment_author );

	$comment->comment_author_email = format_to_edit( $comment->comment_author_email );

	$comment->comment_author_url   = format_to_edit( $comment->comment_author_url );

	$comment->comment_author_url   = esc_url( $comment->comment_author_url );

	return $comment;

}

/**

 * Get the number of pending comments on a post or posts

 *

 * @since 2.3.0

 *

 * @global wpdb $wpdb WordPress database abstraction object.

 *

 * @param int|array $post_id Either a single Post ID or an array of Post IDs

 * @return int|array Either a single Posts pending comments as an int or an array of ints keyed on the Post IDs

 */

function get_pending_comments_num( $post_id ) {

	global $wpdb;

	$single = false;

	if ( ! is_array( $post_id ) ) {

		$post_id_array = (array) $post_id;

		$single        = true;

	} else {

		$post_id_array = $post_id;

	}

	$post_id_array = array_map( 'intval', $post_id_array );

	$post_id_in    = "'" . implode( "', '", $post_id_array ) . "'";

	$pending = $wpdb->get_results( "SELECT comment_post_ID, COUNT(comment_ID) as num_comments FROM $wpdb->comments WHERE comment_post_ID IN ( $post_id_in ) AND comment_approved = '0' GROUP BY comment_post_ID", ARRAY_A );

	if ( $single ) {

		if ( empty( $pending ) ) {

			return 0;

		} else {

			return absint( $pending[0]['num_comments'] );

		}

	}

	$pending_keyed = array();

	// Default to zero pending for all posts in request

	foreach ( $post_id_array as $id ) {

		$pending_keyed[ $id ] = 0;

	}

	if ( ! empty( $pending ) ) {

		foreach ( $pending as $pend ) {

			$pending_keyed[ $pend['comment_post_ID'] ] = absint( $pend['num_comments'] );

		}

	}

	return $pending_keyed;

}

/**

 * Add avatars to relevant places in admin, or try to.

 *

 * @since 2.5.0

 *

 * @param string $name User name.

 * @return string Avatar with Admin name.

 */

function floated_admin_avatar( $name ) {

	$avatar = get_avatar( get_comment(), 32, 'mystery' );

	return "$avatar $name";

}

/**

 * @since 2.7.0

 */

function enqueue_comment_hotkeys_js() {

	if ( 'true' == get_user_option( 'comment_shortcuts' ) ) {

		wp_enqueue_script( 'jquery-table-hotkeys' );

	}

}

/**

 * Display error message at bottom of comments.

 *

 * @param string $msg Error Message. Assumed to contain HTML and be sanitized.

 */

function comment_footer_die( $msg ) {

	echo "<div class='wrap'><p>$msg</p></div>";

	include( ABSPATH . 'wp-admin/admin-footer.php' );

	die;

}