<?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     Patricia Álvarez <info@raiolanetworks.es>
 */
class Wp_Database_Tools_Database {

	/**
	 * The table name.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      String  $table_name    Content cronjobs row and count.
	 */
	protected $table_name;

	/**
	 * The array of the cronjobs.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      Wp_Database_Tools_Database_Cronjobs  $cronjobs    Content cronjobs row and count.
	 */
	protected $cronjobs;

	/**
	 * The array of the cronjobs.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      array    $cronjobs_data    Content cronjobs row and count.
	 */
	protected $cronjobs_data;

	/**
	 * The array of the transients.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      Wp_Database_Tools_Database_Transients  $transients  Content transients row and count.
	 */
	protected $transients;

	/**
	 * The array of the transients_data.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      array    $transients_data    Content transients_data row and count.
	 */
	protected $transients_data;

	/**
	 * The general object.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      Wp_Database_Tools_Database_General    $general    The general object.
	 */
	protected $general;

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

	/**
	 * The tables object.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      Wp_Database_Tools_Database_Tables    $tables    The general object.
	 */
	protected $tables;

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

	/**
	 * The options object.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      Wp_Database_Tools_Database_Options    $options    The general object.
	 */
	protected $options;

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

	/**
	 * The plugins data.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      array    $plugins    The plugins data.
	 */
	protected $plugins;

	/**
	 * The themes data.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      array    $themes    The themes data.
	 */
	protected $themes;

	/**
	 * The matching obj.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      Wp_Database_Tools_Matching    $matching    The matching obj.
	 */
	protected $matching;

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

	/**
	 * The license status.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      array    $license_status    The license status.
	 */
	public $license_status;

	/**
	 * The data loop.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      array    $data_loop    Control loop data.
	 */
	public $data_loop;

	/**
	 * The limit records.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      array    $limit    The limit records.
	 */
	protected $limit;

	/**
	 * The key use of child class.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      array    $key    The key use of child class.
	 */
	protected $key;

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

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

	/**
	 * The feedback data of users selects.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      array    $feedback    The feedback data of users selects.
	 */
	protected $feedback;

	/**
	 * The porcent of loding.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      array    $current_loading    The porcent of loding.
	 */
	protected $current_loading;

	/**
	 * Indicates if record is multiple.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      boolean    $is_multiple    Indicates if record is multiple.
	 */
	protected $is_multiple;

	/**
	 * Property if the scanner must be force.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      string    $force_execute_scanner    Property if the scanner must be force.
	 */
	protected $force_execute_scanner;

	/**
	 * The cache data of records.
	 *
	 * @since    1.0.0
	 * @access   protected
	 * @var      array    $cache_data    The cache data of records.
	 */
	protected $cache_data;

	/**
	 * Initialize the database base.
	 *
	 * @param Wp_Database_Tools_Plugins  $plugins obj.
	 * @param Wp_Database_Tools_Themes   $themes obj.
	 * @param Wp_Database_Tools_Matching $matching obj.
	 * @param string                     $license_status The status license.
	 *
	 * @since    1.0.0
	 */
	public function __construct( $plugins, $themes, $matching, $license_status ) {

		// Dependencies.
		$this->load_dependencies();
		$this->check_database_size();
		$this->check_transients();

		$this->plugins        = $plugins->get_plugins();
		$this->themes         = $themes->get_themes();
		$this->matching       = $matching;
		$this->license_status = $license_status;

		// General.
		$this->general    = new Wp_Database_Tools_Database_General();
		$this->tables     = new Wp_Database_Tools_Database_Tables( $this->plugins, $this->themes, $this->matching, $this->license_status );
		$this->options    = new Wp_Database_Tools_Database_Options( $this->plugins, $this->themes, $this->matching, $this->license_status );
		$this->transients = new Wp_Database_Tools_Database_Transients( $this->plugins, $this->themes, $this->matching, $this->license_status );
		$this->cronjobs   = new Wp_Database_Tools_Database_Cronjobs( $this->plugins, $this->themes, $this->matching, $this->license_status );

	}

	/**
	 * Load dependencies.
	 * Called in the constructor of the child classes.
	 *
	 * @param string $key The key of child.
	 * @since     1.0.0
	 */
	protected function load_dependencies_child( $key ) {

		require_once plugin_dir_path( dirname( __FILE__ ) ) . 'includes/data/class-wp-database-tools-database-data.php';
		require_once plugin_dir_path( dirname( __FILE__ ) ) . 'includes/data/class-wp-database-tools-database-data-origin.php';
		require_once plugin_dir_path( dirname( __FILE__ ) ) . 'includes/data/class-wp-database-tools-database-data-author.php';
		require_once plugin_dir_path( dirname( __FILE__ ) ) . 'includes/data/class-wp-database-tools-database-data-marketplace.php';

		if ( 'transients' === $key || 'options' === $key ) {
			require_once plugin_dir_path( dirname( __FILE__ ) ) . 'includes/data/class-wp-database-tools-database-data-option.php';
		}

		if ( 'cronjobs' === $key ) {
			require_once plugin_dir_path( dirname( __FILE__ ) ) . 'includes/data/class-wp-database-tools-database-data-cronjob.php';
		}

		if ( 'tables' === $key ) {
			require_once plugin_dir_path( dirname( __FILE__ ) ) . 'includes/data/class-wp-database-tools-database-data-table.php';
		}
	}

	/**
	 * Collects the json that are stored through the API and stores them in an array.
	 *
	 * @since     1.0.0
	 * @return    array    The array with api data.
	 */
	protected function get_api_data( $key ) {
		// API data.
		$path_api_data = plugin_dir_path( __DIR__ ) . 'data/api/';

		$api_data = array(
			'source'       => json_decode( file_get_contents( $path_api_data . $key . '.json' ) ),
			'plugins'      => json_decode( file_get_contents( $path_api_data . 'plugins.json' ) ),
			'themes'       => json_decode( file_get_contents( $path_api_data . 'themes.json' ) ),
			'cores'        => json_decode( file_get_contents( $path_api_data . 'cores.json' ) ),
			'authors'      => json_decode( file_get_contents( $path_api_data . 'authors.json' ) ),
			'marketplaces' => json_decode( file_get_contents( $path_api_data . 'marketplaces.json' ) ),
		);

		return $api_data;

	}


	/**
	 * In some sections, such as options and transients, a calculation of the total number of records is performed.
	 * It is also indicated if the calculated size is considered high or low.
	 *
	 * @since     1.0.0
	 * @return    array    The array with size data.
	 */
	protected function calculate_data_source_size( $cache_source ) {

		// Calc size format.
		$total_sum_value    = is_array( $cache_source['size']['total']['value'] ) ? array_sum( $cache_source['size']['total']['value'] ) : $cache_source['size']['total']['value'];
		$autoload_sum_value = is_array( $cache_source['size']['autoload']['value'] ) ? array_sum( $cache_source['size']['autoload']['value'] ) : $cache_source['size']['autoload']['value'];

		$cache_source['size']['total']['format']       = $this->get_file_size_info( $total_sum_value );
		$cache_source['size']['autoload']['format']    = $this->get_file_size_info( $autoload_sum_value );
		$cache_source['size']['autoload']['indicator'] = $this->get_level_size( $autoload_sum_value );

		return $cache_source;

	}

	/**
	 * Reads from the json the flags that determine whether to perform data
	 * processing or to collect data from the cache files.
	 *
	 * @since     1.0.0
	 * @return    array    The array with size data.
	 */
	protected function get_data_cache_indicator( $key ) {

		$cache_path = plugin_dir_path( __DIR__ ) . 'data/cache/' . WPDBT_PREFIX . $key;

		// Load source.
		$cache_source = file_get_contents( $cache_path . '_' . $key . '.json' );
		if ( false === $cache_source ) {
			Wp_Database_Tools_Logger::error( 'GET CACHE: source fail' );
		}

		// Load indicators.
		$cache_indicators = file_get_contents( $cache_path . '_indicators.json' );
		if ( false === $cache_indicators ) {
			Wp_Database_Tools_Logger::error( 'GET CACHE: indicators fail' );
		}

		$cache_source_decode = json_decode( $cache_source, true );
		if ( false === $cache_source_decode || null === $cache_source_decode ) {
			Wp_Database_Tools_Logger::error( 'GET CACHE: fail decoding data ' . $key . ' fail' );
		}

		$cache_indicators_decode = json_decode( $cache_indicators );
		if ( false === $cache_indicators_decode || null === $cache_indicators_decode ) {
			Wp_Database_Tools_Logger::error( 'GET CACHE: fail decoding indicators ' . $key . ' fail' );
		}

		$cache_data = array(
			'source'     => $cache_source_decode,
			'indicators' => $cache_indicators_decode,
		);

		return $cache_data;

	}

	/**
	 * Sets the flags that determine whether data processing should be
	 * performed and saves the information in json
	 *
	 * @since     1.0.0
	 */
	protected function set_cache_indicators( $key, $api_data_source, $feedback, $sum_ids ) {

		$cache_path = plugin_dir_path( __DIR__ ) . 'data/cache/' . WPDBT_PREFIX . $key;

		$cache_data_indicators = array(
			'api'    => strlen( wp_json_encode( $api_data_source ) ),
			'status' => strlen( wp_json_encode( array( $feedback, $this->license_status ) ) ),
			'ids'    => $sum_ids,
		);

		file_put_contents( $cache_path . '_indicators.json', json_encode( $cache_data_indicators ) );

	}


	/**
	 * Returns a string depending on whether the size of the records is
	 * considered high, medium or high.
	 *
	 * @since     1.0.0
	 * @return    String    The level by the size.
	 */
	public function get_level_size( $bytes ) {

		if ( $bytes <= 2097152 ) {
			return 'lower';
		}
		if ( $bytes > 2097152 && $bytes < 5242880 ) {
			return 'medium';
		}
		if ( $bytes >= 5242880 ) {
			return 'high';
		}

	}

	/**
	 * Establishes a transient with the state of charge.
	 *
	 * @since     1.0.0
	 */
	protected function set_status_loading( $status, $porcent, $data_loop, $cache ) {
		$data = array(
			'status'    => $status,
			'porcent'   => $porcent,
			'data_loop' => $data_loop,
			'cache'     => $cache,
		);
		set_transient( WPDBT_PREFIX . 'status_loading', $data );
	}

	/**
	 * Returns the transient that stores the load loop data.
	 *
	 * @param string $key The key transient.
	 * @since     1.0.0
	 * @return    array    $data_loop Transient data loop.
	 */
	public function get_data_loop( $key ) {

		$data_loop = get_transient( $key . '_data_loop' );

		if ( false === $data_loop ) {
			$data_loop = array(
				'offset'    => 0,
				'is_finish' => false,
			);
		}

		return $data_loop;

	}

	/**
	 * Saves in a transient the loop data of the data load..
	 *
	 * @param string $limit Query limit.
	 * @param string $offset Query offset.
	 * @param string $total Total records.
	 * @param string $key The key transient.
	 * @since     1.0.0
	 */
	public function set_data_loop( $limit, $offset, $total, $key ) {

		// Calc vars.
		$offset += $limit;
		$loops   = ceil( $total / $limit ) === 0 ? 1 : ceil( $total / $limit );
		// Set data.
		$data_loop = array(
			'offset'       => $offset,
			'is_finish'    => false,
			'total'        => $total,
			'loops'        => $loops,
			'current_loop' => ceil( $offset / $limit ),
		);

		$data_loop['is_finish'] = ( $data_loop['loops'] + 1 ) == $data_loop['current_loop'];

		if ( true === $data_loop['is_finish'] ) {
			$data_loop['current_loop']--;
		}

		// Save transient.
		set_transient( $key . '_data_loop', $data_loop );

	}

	/**
	 * Remove the transient from loop data
	 *
	 * @param string $key The key transient.
	 * @since     1.0.0
	 */
	public function remove_data_loop( $key ) {

		if ( empty( $key ) && isset( $_GET['page'] ) ) {
			$key = $_GET['page'];
		}

		delete_transient( $key . '_data_loop' );
	}

	/**
	 * Includes the necessary dependencies.
	 *
	 * @since     1.0.0
	 */
	private function load_dependencies() {

		if ( ! function_exists( 'wp_get_current_user' ) ) {
			include ABSPATH . 'wp-includes/pluggable.php';
		}

		/**
		 * WishListMember compatibility
		 * The error occurs when calling get_site_transient, WishListMember registers a filter that includes the current_user_can method
		*/

		if ( is_plugin_active( 'wishlist-member/wpm.php' ) ) {
			if ( ! function_exists( 'wp_get_current_user' ) ) {
				include ABSPATH . 'wp-includes/pluggable.php';
			}
		}

		/**
		 * The class responsible for orchestrating the actions and filters of the
		 * core plugin.
		 */
		require_once plugin_dir_path( dirname( __FILE__ ) ) . 'includes/class-wp-database-tools-database-general.php';
		require_once plugin_dir_path( dirname( __FILE__ ) ) . 'includes/class-wp-database-tools-database-tables.php';
		require_once plugin_dir_path( dirname( __FILE__ ) ) . 'includes/class-wp-database-tools-database-options.php';
		require_once plugin_dir_path( dirname( __FILE__ ) ) . 'includes/class-wp-database-tools-database-transients.php';
		require_once plugin_dir_path( dirname( __FILE__ ) ) . 'includes/class-wp-database-tools-database-cronjobs.php';

	}

	/**
	 * Calls the method of the general child class.
	 * Executes processing of data received from a form.
	 *
	 * @since     1.0.0
	 */
	public function action_form_general() {
		$this->general->action_form();
	}

	/**
	 * Calls the method of the tables child class.
	 * Executes processing of data received from a form.
	 *
	 * @since     1.0.0
	 */
	public function action_form_tables() {
		$this->tables->action_form();
	}

	/**
	 * Calls the method of the options child class.
	 * Executes processing of data received from a form.
	 *
	 * @since     1.0.0
	 */
	public function action_form_options() {
		$this->options->action_form();
	}

	/**
	 * Calls the method of the transients child class.
	 * Executes processing of data received from a form.
	 *
	 * @since     1.0.0
	 */
	public function action_form_transients() {
		$this->transients->action_form();
	}

	/**
	 * Calls the method of the cronjobs child class.
	 * Executes processing of data received from a form.
	 *
	 * @since     1.0.0
	 */
	public function action_form_cronjobs() {
		$this->cronjobs->action_form();
	}

	/**
	 * Returns user feedback data on origins.
	 * This is done so that the user is limited to voting only once.
	 *
	 * @param string $section The key of the array (e.g. tables).
	 * @since     1.0.0
	 * @return    array    $feedback meta user.
	 */
	public function get_user_feedback( $section ) {

		$KEY      = WPDBT_PREFIX . 'feedback';
		$feedback = get_user_meta( get_current_user_id(), $KEY, true );
		if ( ! $feedback ) {
			return false;
		}
		if ( isset( $feedback[ $section ] ) ) {
			$feedback = $feedback[ $section ];
		} else {
			return false;
		}
		if ( ! $feedback ) {
			return false;
		}
		return $feedback;

	}

	/**
	 * Checks the size of the database and assigns it to the property "size".
	 *
	 * @since     1.0.0
	 */
	public function check_database_size() {
		$size = array();
		global $wpdb;
		$query          = "SELECT (SUM(DATA_LENGTH + INDEX_LENGTH)) as size FROM INFORMATION_SCHEMA.TABLES 
		WHERE TABLE_SCHEMA = '" . $wpdb->dbname . "'";
		$result         = $wpdb->get_results( $query );
		$size['size']   = $result[0]->size;
		$size['format'] = $this->get_file_size_info( $size['size'] );
		$size['format'] = $size['format']['size'] . '' . $size['format']['type'];
		$this->size     = $size;
	}

	/**
	 * Assigns the data to the property through the class method.
	 *
	 * @since     1.0.0
	 */
	public function check_general_data() {
		$this->general_data = $this->general->get_data();
	}

	/**
	 * Assigns the data to the property through the class method.
	 *
	 * @since     1.0.0
	 */
	public function check_tables_data() {
		$this->tables_data = $this->tables->get_data();
		$this->size        = $this->tables->get_size();
	}

	/**
	 * Assigns the data to the property through the class method.
	 *
	 * @since     1.0.0
	 */
	public function check_options_data() {
		$this->options_data = $this->options->get_data();
	}

	/**
	 * Assigns the data to the property through the class method.
	 *
	 * @since     1.0.0
	 */
	public function check_transients_data() {
		$this->transients_data = $this->transients->get_data();
	}

	/**
	 * Assigns the data to the property through the class method.
	 *
	 * @since     1.0.0
	 */
	public function check_cronjobs_data() {
		$this->cronjobs_data = $this->cronjobs->get_data();
	}

	/**
	 * Assigns the data to the property through the class method.
	 *
	 * @since     1.0.0
	 */
	private function check_transients() {
		global $wpdb;
		$this->transients['data']  = $wpdb->get_results( 'SELECT * FROM  ' . $wpdb->prefix . "options WHERE option_name LIKE ('%\_transient\_%')" );
		$this->transients['count'] = count( $this->transients['data'] );
	}

	/**
	 * Returns the size calculated from bits.
	 *
	 * @param int $file_size size on bits.
	 * @since     1.0.0
	 * @return    array    $db_size_info database size.
	 */
	static function get_file_size_info( $file_size ) {

		$bytes = array( 'B', 'KB', 'MB', 'GB', 'TB' );

		if ( $file_size < 1024 ) {
			$file_size = 1;
		}

		for ( $i = 0; $file_size > 1024; $i++ ) {
			$file_size /= 1024;
		}

		$db_size_info['size'] = round( $file_size, 2 );
		$db_size_info['type'] = $bytes[ $i ];

		return $db_size_info;
	}

	public function init_dashboard() {
		$cronjobs_obj = $this->get_cronjobs_obj();
		$cronjobs_obj->check_data( null );
		$this->check_cronjobs_data();
		$this->check_transients();
	}

	public function init_general() {
		$tables_obj = $this->get_general_obj();
		$tables_obj->check_data( null );
		$this->check_general_data();
	}

	public function init_tables() {
		$tables_obj = $this->get_tables_obj();
		$tables_obj->check_data( null );
		$this->check_tables_data();
	}

	public function init_options() {
		$options_obj = $this->get_options_obj();
		$options_obj->check_data( null );
		$this->check_options_data();
	}

	public function init_transients() {
		$transients_obj = $this->get_transients_obj();
		$transients_obj->check_data( null );
		$this->check_transients_data();
	}

	public function init_cronjobs() {
		$cronjobs_obj = $this->get_cronjobs_obj();
		$cronjobs_obj->check_data( null );
		$this->check_cronjobs_data();
	}


	static function set_data_api(
		$api_data_source,
		$api_data_plugins,
		$api_data_themes,
		$api_data_cores,
		$api_data_marketplaces,
		$api_data_authors,
		$section ) {

		$MARKETPLACE_CORE_ID    = 1;
		$MARKETPLACE_UNKNOWN_ID = 4;

		$format_data                = array();
		$format_data['source']      = $api_data_source;
		$format_data['origin']      = null;
		$format_data['marketplace'] = null;
		$format_data['author']      = null;

		// Get type
		if ( $section == 'options' ) {
			$key_type = 'optionable_type';
			$key_id   = 'optionable_id';
		}

		if ( $section == 'transients' ) {
			$key_type = 'transientable_type';
			$key_id   = 'transientable_id';
		}

		if ( $section == 'tables' ) {
			$key_type = 'tableable_type';
			$key_id   = 'tableable_id';
		}

		if ( $section == 'cronjobs' ) {
			$key_type = 'cronable_type';
			$key_id   = 'cronable_id';
		}

		$api_data_origin_type = strtolower( str_replace( 'App\Models\\', '', $api_data_source->{$key_type} ) );
		$api_data_origin_id   = $api_data_source->{$key_id};

		// Origin
		if ( $api_data_origin_type == 'plugin' ) {
			$key_api_data          = array_keys( array_column( $api_data_plugins, 'id' ), $api_data_origin_id );
			$key_api_data          = $key_api_data[0];
			$format_data['origin'] = $api_data_plugins[ $key_api_data ];
		}

		if ( $api_data_origin_type == 'theme' ) {
			$key_api_data          = array_keys( array_column( $api_data_themes, 'id' ), $api_data_origin_id );
			$key_api_data          = $key_api_data[0];
			$format_data['origin'] = $api_data_themes[ $key_api_data ];
		}

		if ( $api_data_origin_type == 'core' ) {
			$key_api_data          = array_keys( array_column( $api_data_cores, 'id' ), $api_data_origin_id );
			$key_api_data          = $key_api_data[0];
			$format_data['origin'] = $api_data_cores[ $key_api_data ];
		}

		// Marketplace
		$marketplace_id             = ( $api_data_origin_type == 'core' )
		? $MARKETPLACE_CORE_ID
		: $format_data['origin']->marketplace_id;
		$key_api_data               = array_keys( array_column( $api_data_marketplaces, 'id' ), $marketplace_id );
		$key_api_data               = $key_api_data[0];
		$format_data['marketplace'] = $api_data_marketplaces[ $key_api_data ];

		// Author
		$key_api_data          = array_keys( array_column( $api_data_authors, 'id' ), $format_data['origin']->author_id );
		$key_api_data          = $key_api_data[0];
		$format_data['author'] = $api_data_authors[ $key_api_data ];

		return $format_data;

	}

	static function execute_simple_query( $table, $condition, $key, $label, $is_days, $action ) {
		global $wpdb;
		$data  = array();
		$query = $action . ' FROM ' . $wpdb->prefix . $table . ' WHERE ' . $condition;

		$data[ $key ]['data']    = $wpdb->get_results( $query );
		$data[ $key ]['count']   = ( isset( $data[ $key ]['data'][0]->total ) ) ? $data[ $key ]['data'][0]->total : count( $data[ $key ]['data'] );
		$data[ $key ]['label']   = $label;
		$data[ $key ]['is-days'] = $is_days;
		$data[ $key ]['table']   = $table;

		return $data;
	}

	static function execute_complex_complex_query( $table, $sql, $key, $label, $is_days ) {
		global $wpdb;

		$data[ $key ]['data']    = $wpdb->get_results( $sql );
		$data[ $key ]['count']   = ( isset( $data[ $key ]['data'][0]->total ) ) ? $data[ $key ]['data'][0]->total : count( $data[ $key ]['data'] );
		$data[ $key ]['label']   = $label;
		$data[ $key ]['is-days'] = $is_days;
		$data[ $key ]['table']   = $table;

		return $data;
	}

	static function generate_message_success( $type, $indicator, $array_indicator, $action ) {
		return sprintf( __( 'Records of type <strong>%1$s</strong> with the %2$s <strong>%3$s</strong> have been %4$s <br>', 'wp-database-tools' ), $type, $indicator, join( ', ', $array_indicator ), $action );
	}
	static function generate_message_error( $type, $indicator, $array_indicator, $action ) {
		return sprintf( __( 'Records of type <strong>%1$s</strong> with the %2$s <strong>%3$s</strong> could not be %4$s <br>', 'wp-database-tools' ), $type, $indicator, join( ', ', $array_indicator ), $action );
	}

	static function generate_message_success_simple( $type, $action ) {
		return sprintf( __( 'Records of type <strong>%1$s</strong> have been %2$s <br>', 'wp-database-tools' ), $type, $action );
	}
	static function generate_message_error_simple( $type, $action ) {
		return sprintf( __( 'Records of type <strong>%1$s</strong> could not be %2$s <br>', 'wp-database-tools' ), $type, $action );
	}

	static function generate_message_associated_success( $type, $associated, $array_ids ) {
		return sprintf( __( 'Records of type <strong>%1$s</strong> associated to <strong>%2$s</strong> with the ids <strong>%3$s</strong> have been eliminated <br>', 'wp-database-tools' ), $type, $associated, join( ', ', $array_ids ) );
	}
	static function generate_message_associated_error( $type, $associated, $array_ids ) {
		return sprintf( __( 'Records of type <strong>%1$s</strong> associated to <strong>%2$s</strong> with the ids <strong>%3$s</strong> could not be removed <br>', 'wp-database-tools' ), $type, $associated, join( ', ', $array_ids ) );
	}


	/**
	 * Executes the deletion in the general section.
	 * Stores the return message to the user in a transient.
	 *
	 * @since     1.0.0
	 */

	static function execute_delete( $table, $ids_array, $meta_keys_array ) {

		global $wpdb;
		$errors_messages       = '';
		$successes_messages    = '';
		$MAX_REMOVE_INDIVIDUAL = 15;

		switch ( $table ) {

			case 'posts':
				$ids_array_successes = array();
				$ids_array_errors    = array();

				if ( count( $ids_array ) > $MAX_REMOVE_INDIVIDUAL ) {

					$sql    = $wpdb->prepare( 'DELETE FROM %1s WHERE ID IN (%1s)', $wpdb->posts, join( ', ', $ids_array ) );
					$result = $wpdb->query( $sql );

					if ( $result == count( $ids_array ) ) {
						$successes_messages .= self::generate_message_success_simple( 'posts', __( 'removed', WPDBT_SLUG ) );
					} else {
						$errors_messages .= self::generate_message_error_simple( 'posts', __( 'removed', WPDBT_SLUG ) );
					}

					// removed from few records we return the specific ids
				} else {

					foreach ( $ids_array as $id ) {

						$result = wp_delete_post( $id, true );

						if ( $result !== false && $result !== null ) {
							array_push( $ids_array_successes, $id );
						} else {
							array_push( $ids_array_errors, $id );
						}
					}
				}

				if ( ! empty( $ids_array_successes ) ) {
					if ( count( $ids_array_successes ) < $MAX_REMOVE_INDIVIDUAL ) {
						$successes_messages .= self::generate_message_success( 'posts', 'ids', $ids_array_successes, __( 'removed', WPDBT_SLUG ) );
					} else {
						$successes_messages .= self::generate_message_success_simple( 'posts', __( 'removed', WPDBT_SLUG ) );
					}
				}

				if ( ! empty( $ids_array_errors ) ) {
					if ( count( $ids_array_errors ) < $MAX_REMOVE_INDIVIDUAL ) {
						$errors_messages .= self::generate_message_error( 'posts', 'ids', $ids_array_errors, __( 'removed', WPDBT_SLUG ) );
					} else {
						$errors_messages .= self::generate_message_error_simple( 'posts', __( 'removed', WPDBT_SLUG ) );
					}
				}

				break;

			case 'comments':
				$ids_array_successes = array();
				$ids_array_errors    = array();

				if ( count( $ids_array ) > $MAX_REMOVE_INDIVIDUAL ) {

					$sql    = $wpdb->prepare( 'DELETE FROM %1s WHERE comment_ID IN (%1s)', $wpdb->comments, join( ', ', $ids_array ) );
					$result = $wpdb->query( $sql );

					if ( $result == count( $ids_array ) ) {
						$successes_messages .= self::generate_message_success_simple( 'comments', __( 'removed', WPDBT_SLUG ) );
					} else {
						$errors_messages .= self::generate_message_error_simple( 'comments', __( 'removed', WPDBT_SLUG ) );
					}

					// removed from few records we return the specific ids
				} else {

					foreach ( $ids_array as $id ) {

						$result = wp_delete_comment( $id, true );

						if ( $result !== false && $result !== null ) {
							array_push( $ids_array_successes, $id );
						} else {
							array_push( $ids_array_errors, $id );
						}
					}
				}

				if ( ! empty( $ids_array_successes ) ) {
					if ( count( $ids_array_successes ) < $MAX_REMOVE_INDIVIDUAL ) {
						$successes_messages .= self::generate_message_success( 'comments', 'ids', $ids_array_successes, __( 'removed', WPDBT_SLUG ) );
					} else {
						$successes_messages .= self::generate_message_success_simple( 'comments', __( 'removed', WPDBT_SLUG ) );
					}
				}

				if ( ! empty( $ids_array_errors ) ) {
					if ( count( $ids_array_errors ) < $MAX_REMOVE_INDIVIDUAL ) {
						$errors_messages .= self::generate_message_error( 'comments', 'ids', $ids_array_errors, __( 'removed', WPDBT_SLUG ) );
					} else {
						$errors_messages .= self::generate_message_error_simple( 'comments', __( 'removed', WPDBT_SLUG ) );
					}
				}

				break;

			case 'postmeta':
				$ids_array_successes = array();
				$ids_array_errors    = array();

				if ( count( $ids_array ) > $MAX_REMOVE_INDIVIDUAL ) {

					$sql    = $wpdb->prepare( 'DELETE FROM %1s WHERE meta_id IN (%1s)', $wpdb->postmeta, join( ', ', $ids_array ) );
					$result = $wpdb->query( $sql );

					if ( $result == count( $ids_array ) ) {
						$successes_messages .= self::generate_message_success_simple( 'postmeta', __( 'removed', WPDBT_SLUG ) );
					} else {
						$errors_messages .= self::generate_message_error_simple( 'postmeta', __( 'removed', WPDBT_SLUG ) );
					}

					// removed from few records we return the specific ids
				} else {

					foreach ( $ids_array as $key => $id ) {

						// $result = delete_metadata('post', $id, $meta_keys_array[$key]);
						$result = delete_metadata_by_mid( 'post', $id );

						if ( $result !== false && $result !== null ) {
							array_push( $ids_array_successes, $id );
						} else {
							array_push( $ids_array_errors, $id );
						}
					}
				}

				if ( ! empty( $ids_array_successes ) ) {
					if ( count( $ids_array_successes ) < $MAX_REMOVE_INDIVIDUAL ) {
						$successes_messages .= self::generate_message_success( 'postmeta', 'ids', $ids_array_successes, __( 'removed', WPDBT_SLUG ) );
					} else {
						$successes_messages .= self::generate_message_success_simple( 'postmeta', __( 'removed', WPDBT_SLUG ) );
					}
				}

				if ( ! empty( $ids_array_errors ) ) {
					if ( count( $ids_array_errors ) < $MAX_REMOVE_INDIVIDUAL ) {
						$errors_messages .= self::generate_message_error( 'postmeta', 'ids', $ids_array_errors, __( 'removed', WPDBT_SLUG ) );
					} else {
						$errors_messages .= self::generate_message_error_simple( 'postmeta', __( 'removed', WPDBT_SLUG ) );
					}
				}

				break;

			case 'commentmeta':
				$ids_array_successes = array();
				$ids_array_errors    = array();

				if ( count( $ids_array ) > $MAX_REMOVE_INDIVIDUAL ) {

					$sql    = $wpdb->prepare( 'DELETE FROM %1s WHERE meta_id IN (%1s)', $wpdb->commentmeta, join( ', ', $ids_array ) );
					$result = $wpdb->query( $sql );

					if ( $result == count( $ids_array ) ) {
						$successes_messages .= self::generate_message_success_simple( 'commentmeta', __( 'removed', WPDBT_SLUG ) );
					} else {
						$errors_messages .= self::generate_message_error_simple( 'commentmeta', __( 'removed', WPDBT_SLUG ) );
					}

					// removed from few records we return the specific ids
				} else {

					foreach ( $ids_array as $key => $id ) {

						// $result = delete_metadata('comment', $id, $meta_keys_array[$key]);
						$result = delete_metadata_by_mid( 'comment', $id );

						if ( $result !== false && $result !== null ) {
							array_push( $ids_array_successes, $id );
						} else {
							array_push( $ids_array_errors, $id );
						}
					}
				}

				if ( ! empty( $ids_array_successes ) ) {
					if ( count( $ids_array_successes ) < $MAX_REMOVE_INDIVIDUAL ) {
						$successes_messages .= self::generate_message_success( 'commentmeta', 'ids', $ids_array_successes, __( 'removed', WPDBT_SLUG ) );
					} else {
						$successes_messages .= self::generate_message_success_simple( 'commentmeta', __( 'removed', WPDBT_SLUG ) );
					}
				}

				if ( ! empty( $ids_array_errors ) ) {
					if ( count( $ids_array_errors ) < $MAX_REMOVE_INDIVIDUAL ) {
						$errors_messages .= self::generate_message_error( 'commentmeta', 'ids', $ids_array_errors, __( 'removed', WPDBT_SLUG ) );
					} else {
						$errors_messages .= self::generate_message_error_simple( 'commentmeta', __( 'removed', WPDBT_SLUG ) );
					}
				}

				break;

			case 'usermeta':
				$ids_array_successes = array();
				$ids_array_errors    = array();

				if ( count( $ids_array ) > $MAX_REMOVE_INDIVIDUAL ) {

					$sql    = $wpdb->prepare( 'DELETE FROM %1s WHERE umeta_id IN (%1s)', $wpdb->usermeta, join( ', ', $ids_array ) );
					$result = $wpdb->query( $sql );

					if ( $result == count( $ids_array ) ) {
						$successes_messages .= self::generate_message_success_simple( 'usermeta', __( 'removed', WPDBT_SLUG ) );
					} else {
						$errors_messages .= self::generate_message_error_simple( 'usermeta', __( 'removed', WPDBT_SLUG ) );
					}

					// removed from few records we return the specific ids
				} else {

					foreach ( $ids_array as $key => $id ) {

						// $result = delete_metadata('user', $id, $meta_keys_array[$key]);
						$result = delete_metadata_by_mid( 'user', $id );

						if ( $result !== false && $result !== null ) {
							array_push( $ids_array_successes, $id );
						} else {
							array_push( $ids_array_errors, $id );
						}
					}
				}

				if ( ! empty( $ids_array_successes ) ) {
					if ( count( $ids_array_successes ) < $MAX_REMOVE_INDIVIDUAL ) {
						$successes_messages .= self::generate_message_associated_success( 'usermeta', 'users', $ids_array_successes );
					} else {
						$successes_messages .= self::generate_message_success_simple( 'usermeta', __( 'removed', WPDBT_SLUG ) );
					}
				}

				if ( ! empty( $ids_array_errors ) ) {
					if ( count( $ids_array_errors ) < $MAX_REMOVE_INDIVIDUAL ) {
						$errors_messages .= self::generate_message_associated_error( 'usermeta', 'users', $ids_array_errors );
					} else {
						$errors_messages .= self::generate_message_error_simple( 'usermeta', __( 'removed', WPDBT_SLUG ) );
					}
				}

				break;

			case 'termmeta':
				$ids_array_successes = array();
				$ids_array_errors    = array();

				if ( count( $ids_array ) > $MAX_REMOVE_INDIVIDUAL ) {

					$sql    = $wpdb->prepare( 'DELETE FROM %1s WHERE meta_id IN (%1s)', $wpdb->termmeta, join( ', ', $ids_array ) );
					$result = $wpdb->query( $sql );

					if ( $result == count( $ids_array ) ) {
						$successes_messages .= self::generate_message_success_simple( 'termmeta', __( 'removed', WPDBT_SLUG ) );
					} else {
						$errors_messages .= self::generate_message_error_simple( 'termmeta', __( 'removed', WPDBT_SLUG ) );
					}

					// removed from few records we return the specific ids
				} else {

					foreach ( $ids_array as $key => $id ) {

						// $result = delete_metadata('term', $id, $meta_keys_array[$key]);
						$result = delete_metadata_by_mid( 'term', $id );

						if ( $result !== false && $result !== null ) {
							array_push( $ids_array_successes, $id );
						} else {
							array_push( $ids_array_errors, $id );
						}
					}
				}

				if ( ! empty( $ids_array_successes ) ) {
					if ( count( $ids_array_successes ) < $MAX_REMOVE_INDIVIDUAL ) {
						$successes_messages .= self::generate_message_associated_success( 'termmeta', 'terms', $ids_array_successes );
					} else {
						$successes_messages .= self::generate_message_success_simple( 'termmeta', __( 'removed', WPDBT_SLUG ) );
					}
				}

				if ( ! empty( $ids_array_errors ) ) {
					if ( count( $ids_array_errors ) < $MAX_REMOVE_INDIVIDUAL ) {
						$errors_messages .= self::generate_message_associated_error( 'termmeta', 'terms', $ids_array_errors );
					} else {
						$errors_messages .= self::generate_message_error_simple( 'termmeta', __( 'removed', WPDBT_SLUG ) );
					}
				}

				break;

			case 'term_relationships':
				$sql    = $wpdb->prepare( 'DELETE FROM %1s WHERE term_taxonomy_id = 1 AND object_id NOT IN (SELECT id FROM %1s )', $wpdb->prefix . $table, $wpdb->prefix . 'posts' );
				$result = $wpdb->query( $sql );

				if ( $result !== false && $result !== null ) {
					$successes_messages .= self::generate_message_success_simple( 'term_relationships', __( 'removed', WPDBT_SLUG ) );
				} else {
					$errors_messages .= self::generate_message_error_simple( 'term_relationships', __( 'removed', WPDBT_SLUG ) );
				}

				break;

			case 'options':
				$sql    = $wpdb->prepare( 'DELETE FROM %1s WHERE option_id IN (%1s)', $wpdb->options, join( ', ', $ids_array ) );
				$result = $wpdb->query( $sql );

				if ( $result == count( $ids_array ) ) {
					$successes_messages .= self::generate_message_success_simple( 'options', __( 'removed', WPDBT_SLUG ) );
				} else {
					$errors_messages .= self::generate_message_error_simple( 'options', __( 'removed', WPDBT_SLUG ) );
				}

				break;

		}

		if ( ! empty( get_transient( WPDBT_PREFIX . 'errors' ) ) ) {
			$errors_messages .= get_transient( WPDBT_PREFIX . 'errors' );
		}

		if ( ! empty( get_transient( WPDBT_PREFIX . 'successes' ) ) ) {
			$successes_messages .= get_transient( WPDBT_PREFIX . 'successes' );
		}

		set_transient( WPDBT_PREFIX . 'errors', $errors_messages );
		set_transient( WPDBT_PREFIX . 'successes', $successes_messages );

	}

	/**
	 * Checks if the records fall within the date range so that they can be deleted or not.
	 *
	 * @since     1.0.0
	 * @return    boolean    It is possible to delete the record.
	 */

	static function can_delete( $is_days, $table, $action_key, $row ) {

		$can_delete = true;

		if ( $is_days ) {

			$current_options   = get_option( WPDBT_PREFIX . 'user_options_general' );
			$user_selected_day = $current_options[ $action_key ]['days'];
			$user_selected_day = ( $user_selected_day == null ) ? 0 : $user_selected_day;

			switch ( $table ) {
				case 'posts':
					$diff_days  = self::get_dates_between_dates( $row->post_date );
					$can_delete = $diff_days >= $user_selected_day;
					break;

				case 'comments':
					$diff_days  = self::get_dates_between_dates( $row->comment_date );
					$can_delete = $diff_days >= $user_selected_day;
					break;
			}
		}

		return $can_delete;

	}


	static function get_ID( $table, $row ) {

		switch ( $table ) {
			case 'posts':
				return $row->ID;
				break;
			case 'comments':
				return $row->comment_ID;
				break;
			case 'postmeta':
				return $row->meta_id;
				break;
			case 'commentmeta':
				return $row->meta_id;
				break;
			case 'usermeta':
				return $row->umeta_id;
				break;
			case 'termmeta':
				return $row->meta_id;
				break;
			case 'term_relationships':
				return null;
				break;
			case 'options':
				return $row->option_id;
				break;
		}

	}

	static function get_dates_between_dates( $date ) {

		$now          = time();
		$date_compare = strtotime( $date );
		$datediff     = abs( $now - $date_compare );
		return floor( $datediff / ( 60 * 60 * 24 ) );

	}


	public function get_table_titles( $table ) {

		$info_tables_tittles = array();

		switch ( true ) {
			case ( $table == 'posts' ):
				$info_tables_tittles =
				array(
					'ID',
					'Tittle',
					'Content',
					'Date',
					'Actions',
				);
				break;

			case ( $table == 'comments' ):
				$info_tables_tittles =
				array(
					'ID',
					'Author',
					'Content',
					'Date',
					'Actions',
				);
				break;

			case ( $table == 'postmeta' || $table == 'commentmeta' || $table == 'usermeta' || $table == 'termmeta' ):
				$info_tables_tittles =
				array(
					'ID',
					'Meta Key',
					'Meta value',
					'Actions',
				);
				break;

			case ( $table == 'term_relationships' ):
				$info_tables_tittles =
				array(
					'ID',
					'Term taxonomy id',
					'Term order',
					'Actions',
				);
				break;

			case ( $table == 'options' ):
				$info_tables_tittles =
				array(
					'ID',
					'Name',
					'Value',
					'Autoload',
					'Actions',
				);
				break;

		}

		return $info_tables_tittles;
	}


	public function get_info_tables( $table, $row ) {

		$info_tables = array();

		switch ( true ) {
			case ( $table == 'posts' ):
				$info_tables =
				array(
					'id'      => $row->ID,
					'title'   => $row->post_title,
					'content' => $row->post_content,
					'date'    => $row->post_date,
				);
				break;

			case ( $table == 'comments' ):
				$info_tables =
				array(
					'id'      => $row->comment_ID,
					'author'  => get_comment_author( $row->comment_ID ),
					'content' => $row->comment_content,
					'date'    => $row->comment_date,
				);
				break;

			case ( $table == 'postmeta' || $table == 'commentmeta' || $table == 'usermeta' || $table == 'termmeta' ):
				$id_key = $table != 'usermeta' ? $row->meta_id : $row->umeta_id;

				$info_tables =
				array(
					'id'         => $id_key,
					'meta-key'   => $row->meta_key,
					'meta-value' => $row->meta_value,
				);
				break;

			case ( $table == 'term_relationships' ):
				$info_tables =
				array(
					'id'         => $row->object_id,
					'meta-key'   => $row->term_taxonomy_id,
					'meta-value' => $row->term_order,
				);
				break;

			case ( $table == 'options' ):
				$info_tables =
				array(
					'id'           => $row->option_id,
					'option-name'  => $row->option_name,
					'option-value' => $row->option_value,
					'autoload'     => $row->autoload,
				);
				break;

		}

		return $info_tables;

	}

	/**
	 * Initializes the array of all data that will be returned for display in the js.
	 * Call in the child classes.
	 *
	 * @since     1.0.0
	 * @return    array    The origin data.
	 */

	protected function init_full_data() {

		$full_data            = array();
		$full_data['data']    = array();
		$full_data['size']    = array(
			'autoload' => array(
				'value'  => 0,
				'format' => '',
			),
			'total'    => array(
				'value'  => 0,
				'format' => '',
			),
		);
		$full_data['origins'] = $this->init_choices_data();

		return $full_data;
	}

	/**
	 * Initializes in an array the basic data used by the choices library. Used in child classes
	 *
	 * @since     1.0.0
	 * @return    array    The array with default data.
	 */

	protected function init_choices_data() {

		$choices = array(
			array(
				'label'    => __( 'WordPress Core', 'wp-database-tools' ),
				'id'       => 1,
				'disabled' => false,
				'choices'  => array(
					array(
						'value'    => __( 'WordPress Core', 'wp-database-tools' ),
						'label'    => __( 'WordPress Core', 'wp-database-tools' ),
						'selected' => false,
					),
				),
			),
			array(
				'label'    => __( 'Plugins', 'wp-database-tools' ),
				'id'       => 2,
				'disabled' => false,
				'choices'  => array(),
			),
			array(
				'label'    => __( 'Themes', 'wp-database-tools' ),
				'id'       => 3,
				'disabled' => false,
				'choices'  => array(),
			),
			array(
				'label'    => __( 'Multiple', 'wp-database-tools' ),
				'id'       => 4,
				'disabled' => false,
				'choices'  => array(
					array(
						'value'    => __( 'Multiple', 'wp-database-tools' ),
						'label'    => __( 'Multiple', 'wp-database-tools' ),
						'selected' => false,
					),
				),
			),
		);

		return $choices;

	}

	/**
	 * The total size of database.
	 *
	 * @since     1.0.0
	 * @return    array    The size of the database.
	 */
	public function get_size() {
		return $this->size;
	}

	/**
	 * The array of cronjobs.
	 *
	 * @since     1.0.0
	 * @return    Obj    The obj of cronjobs.
	 */
	public function get_cronjobs_obj() {

		return $this->cronjobs;
	}

	/**
	 * The array of cronjobs.
	 *
	 * @since     1.0.0
	 * @return    array    The data of cronjobs.
	 */
	public function get_cronjobs_data() {

		return $this->cronjobs_data;
	}

	/**
	 * The array of transients.
	 *
	 * @since     1.0.0
	 * @return    array    The array of transients.
	 */
	public function get_transients() {

		return $this->transients;
	}

	/**
	 * The array of transients.
	 *
	 * @since     1.0.0
	 * @return    array    The array of transients.
	 */
	public function get_general_data() {

		return $this->general_data;
	}

	/**
	 * The array of transients.
	 *
	 * @since     1.0.0
	 * @return    array    The array of transients.
	 */
	public function get_tables_data() {

		return $this->tables_data;
	}

	/**
	 * The Obj of transients.
	 *
	 * @since     1.0.0
	 * @return    Obj    The Obj of transients.
	 */
	public function get_tables_obj() {

		return $this->tables;
	}

	/**
	 * The Obj of transients.
	 *
	 * @since     1.0.0
	 * @return    Obj    The Obj of transients.
	 */
	public function get_options_obj() {

		return $this->options;
	}

	/**
	 * The Obj of transients.
	 *
	 * @since     1.0.0
	 * @return    Obj    The Obj of transients.
	 */
	public function get_transients_obj() {

		return $this->transients;
	}

	/**
	 * The Obj of transients.
	 *
	 * @since     1.0.0
	 * @return    Obj    The Obj of transients.
	 */
	public function get_general_obj() {

		return $this->general;
	}

	/**
	 * The array of transients.
	 *
	 * @since     1.0.0
	 * @return    array    The array of transients.
	 */
	public function get_options_data() {
		return $this->options_data;
	}

	/**
	 * The array of transients.
	 *
	 * @since     1.0.0
	 * @return    array    The array of transients.
	 */
	public function get_transients_data() {
		return $this->transients_data;
	}

	/**
	 * The array of plugins.
	 *
	 * @since     1.0.0
	 * @return    array    The array of plugins.
	 */
	public function get_plugins() {
		return $this->plugins;
	}

	/**
	 * The array of themes.
	 *
	 * @since     1.0.0
	 * @return    array    The array of themes.
	 */
	public function get_themes() {
		return $this->themes;
	}

}