<?php
/**
 * @package Botmaster
 * @version 1.0.0
 * @author  Quantamcloud
 */

if ( ! class_exists( 'WP_List_Table' ) ) {
	require_once ABSPATH . 'wp-admin/includes/class-wp-list-table.php';
}

/**
 * Response class
 */
class Response_list extends WP_List_Table {


	public $chatbot_admin_page;

	/**
	 * Construct function
	 */
	public function __construct() {

		parent::__construct(
			array(
				'singular' => __( 'Response', 'wpchatbot' ), // singular name of the listed records.
				'plural'   => __( 'Responses', 'wpchatbot' ), // plural name of the listed records.
				'ajax'     => false, // does this table support ajax?.
			)
		);

		$this->chatbot_admin_page = admin_url( 'admin.php?page=simple-text-response' );
	}

	/**
	 * Retrieve customers data from the database
	 *
	 * @param int $per_page
	 * @param int $page_number
	 *
	 * @return mixed
	 */
	public static function get_responses( $per_page, $page_number ) {

		global $wpdb;
		$screen = get_current_screen();
		$sql    = "SELECT * FROM {$wpdb->prefix}wpbot_response";

		$sql     .= ' where 1';
		$per_page = isset( $per_page ) ? $per_page : $_GET['strlang-filter'];// phpcs:ignore WordPress.Security.NonceVerification.Missing

		if ( isset( $_GET['strcat-filter'] ) && $_GET['strcat-filter'] != '' ) {// phpcs:ignore WordPress.Security.NonceVerification.Missing
			$sql .= " and `category` LIKE '%" . $_GET['strcat-filter'] . "%'";// phpcs:ignore WordPress.Security.NonceVerification.Missing
		}
		if ( isset( $_GET['strlang-filter'] ) && $_GET['strlang-filter'] != '' ) {// phpcs:ignore WordPress.Security.NonceVerification.Missing
			$sql .= " and `lang` = '" . $_GET['strlang-filter'] . "'";// phpcs:ignore WordPress.Security.NonceVerification.Missing
		}
		if ( isset( $_GET['str_search'] ) && $_GET['str_search'] != '' ) {// phpcs:ignore WordPress.Security.NonceVerification.Missing
			$sql .= " and (`query` like '%" . $_GET['str_search'] . "%' or `keyword` LIKE '%" . $_GET['str_search'] . "%' or `intent` LIKE '%" . $_GET['str_search'] . "%')";// phpcs:ignore WordPress.Security.NonceVerification.Missing
		}

		if ( ! empty( $_REQUEST['orderby'] ) ) {// phpcs:ignore WordPress.Security.NonceVerification.Missing
			$sql .= ' ORDER BY ' . esc_sql( $_REQUEST['orderby'] );// phpcs:ignore WordPress.Security.NonceVerification.Missing
			$sql .= ! empty( $_REQUEST['order'] ) ? ' ' . esc_sql( $_REQUEST['order'] ) : ' ASC';// phpcs:ignore WordPress.Security.NonceVerification.Missing
		}

		$sql .= " LIMIT $per_page";
		$sql .= ' OFFSET ' . ( $page_number - 1 ) * $per_page;

		$result  = $wpdb->get_results( $sql, 'ARRAY_A' );
		$results = array();
		foreach ( $result  as $i => $v ) {
			$v['query'] = '<a href="admin.php?page=simple-text-response&action=edit&query=' . $v['id'] . '&_wpnonce=' . wp_create_nonce() . '">' . $v['query'] . '</a>';
			array_push( $results, $v );
		}
		return $results;
	}

	/**
	 * Delete a customer record.
	 *
	 * @param int $id customer ID
	 */
	public static function delete_response( $id ) {
		global $wpdb;

		$wpdb->delete(
			"{$wpdb->prefix}wpbot_response",
			array( 'id' => $id ),
			array( '%d' )
		);
	}

	/**
	 * Returns the count of records in the database.
	 *
	 * @return null|string
	 */
	public static function record_count() {
		global $wpdb;

		$sql = "SELECT COUNT(*) FROM {$wpdb->prefix}wpbot_response";

		$sql .= ' where 1';

		if ( isset( $_GET['strcat-filter'] ) && $_GET['strcat-filter'] != '' ) {// phpcs:ignore WordPress.Security.NonceVerification.Missing
			$sql .= " and `category` LIKE '%" . $_GET['strcat-filter'] . "%'";// phpcs:ignore WordPress.Security.NonceVerification.Missing
		}
		if ( isset( $_GET['strlang-filter'] ) && $_GET['strlang-filter'] != '' ) {
			$sql .= " and `lang` = '" . $_GET['strlang-filter'] . "'";// phpcs:ignore WordPress.Security.NonceVerification.Missing
		}
		if ( isset( $_GET['str_search'] ) && $_GET['str_search'] != '' ) {// phpcs:ignore WordPress.Security.NonceVerification.Missing
			$sql .= " and (`query` like '%" . $_GET['str_search'] . "%' or `keyword` LIKE '%" . $_GET['str_search'] . "%' or `intent` LIKE '%" . $_GET['str_search'] . "%')";// phpcs:ignore WordPress.Security.NonceVerification.Missing
		}

		return $wpdb->get_var( $sql );
	}

	/**
	 * Noresponse function
	 *
	 * @return void
	 */
	public function no_items() {
		_e( 'No responses avaliable.', 'wpchatbot' );
	}

	/**
	 * Extratable function
	 *
	 * @param [type] $which
	 * @return void
	 */
	function extra_tablenav( $which ) {

		global $wpdb;

		if ( class_exists( 'Qcld_str_pro' ) ) {
			$table     = $wpdb->prefix . 'wpbot_response_category';
			$filterCat = ( isset( $_GET['strcat-filter'] ) ? $_GET['strcat-filter'] : '' );// phpcs:ignore WordPress.Security.NonceVerification.Missing
			$filterkey = ( isset( $_GET['str_search'] ) ? $_GET['str_search'] : '' );// phpcs:ignore WordPress.Security.NonceVerification.Missing
			if ( $which == 'top' ) {
				$categories = $wpdb->get_results( "SELECT * FROM `$table` WHERE 1 " );
				?>
				<div class="alignleft actions bulkactions">

					<select name="strcat-filter" class="ewc-filter-cat">
						<option value="">Filter by Category</option>
						<?php
						foreach ( $categories as $category ) {
							echo '<option value="' . $category->name . '" ' . ( $filterCat == $category->name ? 'selected="selected"' : '' ) . ' >' . $category->name . '</option>';
						}
						?>

					</select>
					<?php
					if ( function_exists( 'qcld_wpbotml' ) ) {
						$languages  = qcld_wpbotml()->languages;
						$filterlang = ( isset( $_GET['strlang-filter'] ) ? $_GET['strlang-filter'] : '' );// phpcs:ignore WordPress.Security.NonceVerification.Missing
						?>
							<select name="strlang-filter" class="ewc-filter-cat">
								<option value="">Filter by Language</option>
								<?php
								foreach ( $languages as $language ) {
									echo '<option value="' . $language . '" ' . ( $filterlang == $language ? 'selected="selected"' : '' ) . ' >' . qcld_wpbotml()->lanName( $language ) . '</option>';
								}
								?>
							</select>
						<?php
					}
					?>
				</div>
				

				
				<div class="alignleft actions bulkactions">

					<input type="text" name="str_search" value="<?php echo $filterkey; ?>" placeholder="Enter keyword for search" />
					<?php submit_button( __( 'Filter' ), '', 'str_filter_action', false, array( 'id' => 'post-query-submit' ) ); ?>
					<?php submit_button( __( 'Clear Filter' ), '', 'str_clearfilter_action', false, array( 'id' => 'post-query-submit' ) ); ?>
				</div>
				
				<?php
			}
		}

		if ( $which == 'bottom' ) {
			// The code that goes after the table is there

		}
	}

	/**
	 * Render a column when no column specific method exist.
	 *
	 * @param array  $item
	 * @param string $column_name
	 *
	 * @return mixed
	 */
	public function column_default( $item, $column_name ) {

		if ( class_exists( 'Qcld_str_pro' ) ) {
			switch ( $column_name ) {
				case 'query':
				case 'keyword':
				case 'intent':
				case 'category':
					return $item[ $column_name ];

				case 'responses':
					return $item['response'];
				case 'lang':
					return $item['lang'];
				default:
					return print_r( $item, true ); // Show the whole array for troubleshooting purposes
			}
		} else {
			switch ( $column_name ) {
				case 'query':
				case 'keyword':
				case 'intent':
					return $item[ $column_name ];

				case 'responses':
					return $item['response'];
				case 'lang':
					return $item['lang'];
				default:
					return print_r( $item, true ); // Show the whole array for troubleshooting purposes.
			}
		}
	}

	/**
	 * Render the bulk edit checkbox
	 *
	 * @param array $item
	 *
	 * @return string
	 */
	function column_cb( $item ) {
		return sprintf(
			'<input type="checkbox" name="bulk-delete[]" value="%s" />',
			$item['id']
		);
	}

	/**
	 * Method for name column
	 *
	 * @param array $item an array of DB data
	 *
	 * @return string
	 */
	function column_query( $item ) {

		$delete_nonce = wp_create_nonce( 'wp_delete_query' );
		$edit_nonce   = wp_create_nonce( 'wp_edit_query' );

		$title = '<strong>' . $item['query'] . '</strong>';

		$actions = array(
			'edit'   => sprintf( '<a href="?page=%s&action=%s&query=%s&_wpnonce=%s">Edit</a>', esc_attr( $_REQUEST['page'] ), 'edit', absint( $item['id'] ), $edit_nonce ),// phpcs:ignore WordPress.Security.NonceVerification.Missing
			'delete' => sprintf( '<a href="?page=%s&action=%s&query=%s&_wpnonce=%s">Delete</a>', esc_attr( $_REQUEST['page'] ), 'delete', absint( $item['id'] ), $delete_nonce ),// phpcs:ignore WordPress.Security.NonceVerification.Missing
		);

		return $title . $this->row_actions( $actions );
	}

	/**
	 *  Associative array of columns
	 *
	 * @return array
	 */
	function get_columns() {

		if ( class_exists( 'Qcld_str_pro' ) ) {
			$columns = array(
				'cb'        => '<input type="checkbox" />',
				'query'     => __( 'Query', 'wpchatbot' ),
				'keyword'   => __( 'Keyword', 'wpchatbot' ),
				'responses' => __( 'Response', 'wpchatbot' ),
				'intent'    => __( 'Intent', 'wpchatbot' ),
				'category'  => __( 'Category', 'wpchatbot' ),
				'lang'      => __( 'Language', 'wpchatbot' ),

			);
		} else {
			$columns = array(
				'cb'        => '<input type="checkbox" />',
				'query'     => __( 'Query', 'wpchatbot' ),
				'keyword'   => __( 'Keyword', 'wpchatbot' ),
				'responses' => __( 'Response', 'wpchatbot' ),
				'intent'    => __( 'Intent', 'wpchatbot' ),
				'lang'      => __( 'Language', 'wpchatbot' ),

			);
		}
		return $columns;
	}

	/**
	 * Columns to make sortable.
	 *
	 * @return array
	 */
	public function get_sortable_columns() {
		$sortable_columns = array(
			'query' => array( 'query', true ),
		);
		return $sortable_columns;
	}

	/**
	 * Returns an associative array containing the bulk action
	 *
	 * @return array
	 */
	public function get_bulk_actions() {
		$actions = array(
			'bulk-delete' => 'Delete',
		);

		return $actions;
	}

	/**
	 * Handles data query and filter, sorting, and pagination.
	 */
	public function prepare_items() {

		$this->_column_headers = $this->get_column_info();

		/** Process bulk action */
		$this->process_bulk_action();
		$per_page     = $this->get_items_per_page( 'responses_per_page', 20 );
		$current_page = $this->get_pagenum();
		$total_items  = self::record_count();

		$this->set_pagination_args(
			array(
				'total_items' => $total_items, // WE have to calculate the total number of items
				'per_page'    => $per_page, // WE have to determine how many items to show on a page
			)
		);

		$this->items = self::get_responses( $per_page, $current_page );
	}

	public function process_bulk_action() {

		// Detect when a bulk action is being triggered...
		if ( 'delete' === $this->current_action() ) {

			// In our file that handles the request, verify the nonce.
			$nonce = esc_attr( $_REQUEST['_wpnonce'] );// phpcs:ignore WordPress.Security.NonceVerification.Missing

			if ( ! wp_verify_nonce( $nonce, 'wp_delete_query' ) ) {
				die( 'Go get a life script kiddies' );
			} else {
				self::delete_response( absint( $_GET['query'] ) );

						// esc_url_raw() is used to prevent converting ampersand in url to "#038;"
						// add_query_arg() return the current url
						// wp_redirect( esc_url_raw($this->chatbot_admin_page) );
				// exit;
			}
		}

		// If the delete bulk action is triggered
		if ( ( isset( $_POST['action'] ) && $_POST['action'] == 'bulk-delete' )
			|| ( isset( $_POST['action2'] ) && $_POST['action2'] == 'bulk-delete' )
		) {

			$delete_ids = esc_sql( $_POST['bulk-delete'] );

			// loop over the array of record IDs and delete them
			foreach ( $delete_ids as $id ) {
				self::delete_response( $id );

			}

			// esc_url_raw() is used to prevent converting ampersand in url to "#038;"
				// add_query_arg() return the current url
				wp_redirect( esc_url_raw( $this->chatbot_admin_page ) );
			exit;
		}
	}
}