<?php

if (!defined('WPO_VERSION')) die('No direct access allowed');

class WP_Optimization_commentmeta extends WP_Optimization {

	public $ui_sort_order = 9000;

	private $processed_trash_count;

	private $processed_akismet_count;

	private $found_trash_count;

	private $found_akismet_count;

	/**
	 * Do actions before optimize() function.
	 */
	public function before_optimize() {
		$this->processed_trash_count = 0;
		$this->processed_akismet_count = 0;
	}

	/**
	 * Do actions after optimize() function.
	 */
	public function after_optimize() {
		$message = sprintf(_n('%s unused comment metadata item removed', '%s unused comment metadata items removed', $this->processed_trash_count, 'wp-optimize'), number_format_i18n($this->processed_trash_count));
		$message1 = sprintf(_n('%s unused akismet comment metadata item removed', '%s unused akismet comment metadata items removed', $this->processed_akismet_count, 'wp-optimize'), number_format_i18n($this->processed_akismet_count));

		if ($this->is_multisite_mode()) {
			$blogs_count_text = ' '.sprintf(_n('across %s site', 'across %s sites', count($this->blogs_ids), 'wp-optimize'), count($this->blogs_ids));
			$message .= $blogs_count_text;
			$message1 .= $blogs_count_text;
		}

		$this->logger->info($message);
		$this->register_output($message);

		$this->logger->info($message1);
		$this->register_output($message1);
	}

	/**
	 * TODO: The first query here (but not the second) used to be run on a cron run.
	 * This needs reviewing when we review the whole cron-run set of options.
	 */
	public function optimize() {
		$clean = "DELETE FROM `" . $this->wpdb->commentmeta . "` WHERE comment_id NOT IN (SELECT comment_id FROM `" . $this->wpdb->comments . "`);";

		$commentstrash_meta = $this->query($clean);
		$this->processed_trash_count += $commentstrash_meta;

		// TODO:  still need to test now cleaning up comments meta tables - removing akismet related settings.
		$clean = "DELETE FROM `" . $this->wpdb->commentmeta . "` WHERE meta_key LIKE '%akismet%';";

		$commentstrash_meta2 = $this->query($clean);
		$this->processed_akismet_count += $commentstrash_meta2;
	}

	/**
	 * Do actions before get_info().
	 */
	public function before_get_info() {

		$this->found_trash_count = 0;
		$this->found_akismet_count = 0;

	}

	/**
	 * Do actions after get_info() function.
	 */
	public function after_get_info() {

		if ($this->found_trash_count > 0) {
			$message = sprintf(_n('%s orphaned comment meta data in your database', '%s orphaned comment meta data in your database', $this->found_trash_count, 'wp-optimize'), number_format_i18n($this->found_trash_count));
		} else {
			$message = __('No orphaned comment meta data in your database', 'wp-optimize');
		}

		if ($this->found_akismet_count > 0) {
			$message1 = sprintf(_n('%s unused Akismet comment meta rows in your database', '%s unused Akismet meta rows in your database', $this->found_akismet_count, 'wp-optimize'), number_format_i18n($this->found_akismet_count));
		} else {
			$message1 = __('No Akismet comment meta rows in your database', 'wp-optimize');
		}

		if ($this->is_multisite_mode()) {
			$blogs_count_text = ' '.sprintf(_n('across %s site', 'across %s sites', count($this->blogs_ids), 'wp-optimize'), count($this->blogs_ids));
			$message .= $blogs_count_text;
			$message1 .= $blogs_count_text;
		}

		$this->register_output($message);
		$this->register_output($message1);

	}

	/**
	 * Get count of unoptimized items.
	 */
	public function get_info() {

		$sql = "SELECT COUNT(*) FROM `" . $this->wpdb->commentmeta . "` WHERE comment_id NOT IN (SELECT comment_id FROM `" . $this->wpdb->comments . "`);";
		$commentmeta = $this->wpdb->get_var($sql);
		$this->found_trash_count += $commentmeta;

		$sql = "SELECT COUNT(*) FROM `".$this->wpdb->commentmeta."` WHERE meta_key LIKE '%akismet%';";
		$akismetmeta = $this->wpdb->get_var($sql);
		$this->found_akismet_count += $akismetmeta;

	}

	public function settings_label() {
		return __('Clean comment meta data', 'wp-optimize');
	}

	public function get_auto_option_description() {
		return __('Clean comment meta data', 'wp-optimize');
	}
}