<?php
/**
 * Database functions
 *
 * @link       https://raiolanetworks.es
 * @since      1.0.0
 *
 * @package    Wp_Database_Tools
 * @subpackage Wp_Database_Tools/includes
 */

/**
 * Contains the functionalities related to database management.
 *
 * This class defines all code necessary to manage the database functionalities.
 *
 * @since      1.0.0
 * @package    Wp_Database_Tools
 * @subpackage Wp_Database_Tools/includes
 * @author     Raiola Networks <info@raiolanetworks.es>
 */

class Wp_Database_Tools_Database_General extends Wp_Database_Tools_Database {

	/**
	 * The general data of database.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      array    $data    The general data of database.
	 */
	protected $data;

	public function __construct() {

		require_once plugin_dir_path( dirname( __FILE__ ) ) . 'includes/class-wp-database-tools-logger.php';

	}

	public function check_data( $detail_post ) {

		global $wpdb;
		$this->data = array();

		$detail_page = ( isset( $_GET['details'] ) ) ? $_GET['details'] : null;

		if ( $detail_page == null ) {
			$detail_page = ( $detail_post != null ) ? $detail_post : null;
		}

		// REVISIONS
		$key                = 'revision';
		$query              = ( $detail_page == $key ) ? 'SELECT *' : 'SELECT COUNT(*) as total';
		$revisions          = parent::execute_simple_query( 'posts', "post_type = 'revision'", $key, 'Revisions', true, $query );
		$this->data[ $key ] = $revisions[ $key ];

		// Autodrafts
		$key                = 'autodraft';
		$query              = ( $detail_page == $key ) ? 'SELECT *' : 'SELECT COUNT(*) as total';
		$autodrafts         = parent::execute_simple_query( 'posts', "post_status = 'auto-draft'", $key, 'Autodrafts', true, $query );
		$this->data[ $key ] = $autodrafts[ $key ];

		// Trashed posts
		$key                = 'trash-posts';
		$query              = ( $detail_page == $key ) ? 'SELECT *' : 'SELECT COUNT(*) as total';
		$trash_posts        = parent::execute_simple_query( 'posts', "post_status = 'trash'", $key, 'Trashed posts', true, $query );
		$this->data[ $key ] = $trash_posts[ $key ];

		// Pending Comments
		$key                = 'pending-comments';
		$query              = ( $detail_page == $key ) ? 'SELECT *' : 'SELECT COUNT(*) as total';
		$pending_comments   = parent::execute_simple_query( 'comments', "comment_approved = '0'", $key, 'Pending Comments', true, $query );
		$this->data[ $key ] = $pending_comments[ $key ];

		// Spam comments
		$key                = 'span-comments';
		$query              = ( $detail_page == $key ) ? 'SELECT *' : 'SELECT COUNT(*) as total';
		$span_comments      = parent::execute_simple_query( 'comments', "comment_approved = 'spam'", $key, 'Spam Comments', true, $query );
		$this->data[ $key ] = $span_comments[ $key ];

		// Trashed comments
		$key                = 'trash-comments';
		$query              = ( $detail_page == $key ) ? 'SELECT *' : 'SELECT COUNT(*) as total';
		$trash_comments     = parent::execute_simple_query( 'comments', "comment_approved = 'trash'", $key, 'Trashed comments', true, $query );
		$this->data[ $key ] = $trash_comments[ $key ];

		// Pingback comments
		$key                = 'pingback-comments';
		$query              = ( $detail_page == $key ) ? 'SELECT *' : 'SELECT COUNT(*) as total';
		$pingback           = parent::execute_simple_query( 'comments', "comment_type = 'pingback'", $key, 'Pingback comments', true, $query );
		$this->data[ $key ] = $pingback[ $key ];

		// Trackback comments
		$key                = 'trackback-comments';
		$query              = ( $detail_page == $key ) ? 'SELECT *' : 'SELECT COUNT(*) as total';
		$trackback          = parent::execute_simple_query( 'comments', "comment_type = 'trackback'", $key, 'Trackback comments', true, $query );
		$this->data[ $key ] = $trackback[ $key ];

		// Orphaned post meta
		$key   = 'orphaned-post-meta';
		$table = 'postmeta';
		$query = ( $detail_page == $key ) ? 'SELECT *' : 'SELECT COUNT(*) as total';
		// TODO: $wpdb->prepare
		$orphaned_post_meta = parent::execute_complex_complex_query(
			$table,
			$query . ' FROM ' . $wpdb->prefix . $table . " pm LEFT JOIN {$wpdb->prefix}posts p ON p.ID = pm.post_id WHERE p.ID IS NULL",
			$key,
			'Orphaned post meta',
			false,
		);
		$this->data[ $key ] = $orphaned_post_meta[ $key ];

		// Orphaned comment meta
		$key   = 'orphaned-comment-meta';
		$table = 'commentmeta';
		$query = ( $detail_page == $key ) ? 'SELECT *' : 'SELECT COUNT(*) as total';
		// TODO: $wpdb->prepare
		$orphaned_comment_meta = parent::execute_complex_complex_query(
			$table,
			$query . ' FROM ' . $wpdb->prefix . $table . " cm LEFT JOIN {$wpdb->prefix}comments c ON c.comment_id = cm.comment_id WHERE c.comment_id IS NULL",
			$key,
			'Orphaned comment meta',
			false,
		);
		$this->data[ $key ]    = $orphaned_comment_meta[ $key ];

		// Orphaned user meta
		$key   = 'orphaned-user-meta';
		$table = 'usermeta';
		$query = ( $detail_page == $key ) ? 'SELECT *' : 'SELECT COUNT(*) as total';
		// TODO: $wpdb->prepare
		$orphaned_user_meta = parent::execute_complex_complex_query(
			$table,
			$query . ' FROM ' . $wpdb->prefix . $table . " WHERE user_id NOT IN (SELECT ID FROM {$wpdb->prefix}users)",
			$key,
			'Orphaned user meta',
			false,
		);
		$this->data[ $key ] = $orphaned_user_meta[ $key ];

		// Orphaned term meta
		$key        = 'orphaned-term-meta';
		$table      = 'termmeta';
		$table_name = $wpdb->prefix . $table;
		$query      = ( $detail_page == $key ) ? 'SELECT *' : 'SELECT COUNT(*) as total';
		// TODO: $wpdb->prepare
		$orphaned_term_meta = parent::execute_complex_complex_query(
			$table,
			$query . ' FROM ' . $wpdb->prefix . $table . " WHERE term_id NOT IN (SELECT term_id FROM {$wpdb->prefix}terms)",
			'orphaned-term-meta',
			'Orphaned term meta',
			false,
		);
		$this->data[ $key ] = $orphaned_term_meta[ $key ];

		// Orphaned relationships
		$key                    = 'orphaned-relationships-meta';
		$table                  = 'term_relationships';
		$table_name             = $wpdb->prefix . $table;
		$query                  = ( $detail_page == $key ) ? 'SELECT *' : 'SELECT COUNT(*) as total';
		$sql                    = $wpdb->prepare( '%1s FROM %1s WHERE term_taxonomy_id = %d AND object_id NOT IN (SELECT id FROM %1s)', $query, $table_name, 1, $wpdb->prefix . 'posts' );
		$orphaned_relationships = parent::execute_complex_complex_query(
			$table,
			$sql,
			$key,
			'Orphaned relationships meta',
			false,
		);
		$this->data[ $key ]     = $orphaned_relationships[ $key ];

		// Expired transients
		$key                = 'expired-transients';
		$table              = 'options';
		$table_name         = $wpdb->prefix . $table;
		$time               = isset( $_SERVER['REQUEST_TIME'] ) ? (int) $_SERVER['REQUEST_TIME'] : time();
		$query              = ( $detail_page == $key ) ? 'SELECT *' : 'SELECT COUNT(*) as total';
		$sql                = $wpdb->prepare( "%1s FROM %1s WHERE option_name LIKE ('%\_transient_timeout\_%') AND option_value < %s ", $query, $table_name, $time );
		$expired_transients = parent::execute_complex_complex_query(
			$table,
			$sql,
			$key,
			'Expired transients',
			false,
		);
		$this->data[ $key ] = $expired_transients[ $key ];

	}

	/**
	 * Call a specific method depending on the action to be performed.
	 *
	 * @since 1.0.0
	 */
	public function action_form() {
		// TODO: nonce verification.
		switch ( $_POST['action-type'] ) {
			case 'edit':
				$this->edit();
				break;
			case 'delete':
				$this->delete();
				break;
		}

		wp_redirect( $_POST['current-url'] . '&' . WPDBT_PREFIX . 'notice=general' );

	}

	public function loop_delete_data( $detele_array, $table, $is_days, $index_key, $delete_action ) {

		$ids_array       = array();
		$meta_keys_array = array();

		foreach ( $detele_array as $key => $row ) {

			if ( $delete_action != 'all' ) {

				if ( ! parent::can_delete( $is_days, $table, $index_key, $row ) ) {
					set_transient( WPDBT_PREFIX . 'warning', true );
					continue;
				}
			}

			// Get data to call execute delete
			array_push( $ids_array, parent::get_ID( $table, $row ) );

		}

		return array(
			'ids'       => $ids_array,
			'meta_keys' => $meta_keys_array,
		);

	}


	/**
	 * Deletes the records that are indicated in $POST through keys.
	 * These keys are used in a query. The result is stored in a transient,
	 * which is then returned as a warning to the user..
	 *
	 * @since 1.0.0
	 */
	public function delete() {
		// TODO: nonce verification.
		$action_keys = $_POST['action-keys'];
		$details     = $_POST['action-is-details'];
		$this->check_data( $details );

		$action_keys   = explode( '↕', $action_keys );
		$delete_action = $_POST['action-delete'];

		if ( 'no' !== $details ) {

			// Prepare data.
			$table        = $this->data[ $details ]['table'];
			$is_days      = false;
			$index_key    = $details;
			$array_data   = $this->data[ $details ]['data'];
			$allowed_keys = $action_keys;
			$detele_array = array_intersect_key( $array_data, array_flip( $allowed_keys ) );

			// Execute delete.
			$info_for_delete = $this->loop_delete_data( $detele_array, $table, $is_days, $index_key, $delete_action );
			parent::execute_delete( $table, $info_for_delete['ids'], $info_for_delete['meta_keys'] );

		} else {

			foreach ( $action_keys as $action_key ) {

				$this->check_data( $action_key );

				// Prepare data.
				$table        = $this->data[ $action_key ]['table'];
				$is_days      = $this->data[ $action_key ]['is-days'];
				$index_key    = $action_key;
				$detele_array = $this->data[ $action_key ]['data'];

				// Execute delete.
				$info_for_delete = $this->loop_delete_data( $detele_array, $table, $is_days, $index_key, $delete_action );

				if ( ! empty( $info_for_delete['ids'] ) ) {
					parent::execute_delete( $table, $info_for_delete['ids'], $info_for_delete['meta_keys'] );
				}

				unset( $action_key );
			}
		}

	}

	/**
	 * Edit the records that are indicated in $POST through keys.
	 * These keys are used in a query. The result is stored in a transient,
	 * which is then returned as a warning to the user..
	 *
	 * @since 1.0.0
	 */
	public function edit() {
		// TODO: nonce verification.
		// Save options days keep
		$current_options = get_option( WPDBT_PREFIX . 'user_options_general' );
		if ( ! $current_options ) {
			$current_options = array(); }

		// Current days selected.
		$current_days_selected = $_POST['action-days'];

		// Prepare data.
		$action_keys = $_POST['action-keys'];
		$action_keys = explode( '↕', $action_keys );
		$action_days = $_POST['action-is-days'];
		$action_days = explode( '↕', $action_days );

		foreach ( $action_keys as $key => $value ) {
			if ( $action_days[ $key ] == 'yes' ) {
				$current_options[ $value ]['days'] = $current_days_selected;
			}
		}

		update_option( WPDBT_PREFIX . 'user_options_general', $current_options );
	}


	/**
	 * The array of data of general database.
	 *
	 * @since     1.0.0
	 * @return    array    The array of data.
	 */
	public function get_data() {

		return $this->data;
	}

}