<?php
/**
 * Class that builds our Entries table
 *
 * @since 1.2
 */
class VisualFormBuilder_Forms_List extends WP_List_Table {
	/**
	 * field_table_name
	 *
	 * @var mixed
	 * @access public
	 */
	public $field_table_name;

	/**
	 * form_table_name
	 *
	 * @var mixed
	 * @access public
	 */
	public $form_table_name;

	/**
	 * entries_table_name
	 *
	 * @var mixed
	 * @access public
	 */
	public $entries_table_name;

	/**
	 * errors
	 *
	 * @var mixed
	 * @access public
	 */
	public $errors;

	function __construct(){
		global $status, $page, $wpdb;

		// Setup global database table names
		$this->field_table_name   = $wpdb->prefix . 'visual_form_builder_fields';
		$this->form_table_name    = $wpdb->prefix . 'visual_form_builder_forms';
		$this->entries_table_name = $wpdb->prefix . 'visual_form_builder_entries';

		// Set parent defaults
		parent::__construct( array(
			'singular'  => 'form',
			'plural'    => 'forms',
			'ajax'      => false
		) );

		// Handle our bulk actions
		$this->process_bulk_action();
	}

	/**
	 * Display column names
	 *
	 * @since 1.2
	 * @returns $item string Column name
	 */
	function column_default( $item, $column_name ){
		switch ( $column_name ) {
			case 'id':
			case 'form_id' :
				return $item[ $column_name ];
		}
	}

	/**
	 * Builds the on:hover links for the Form column
	 *
	 * @since 1.2
	 */
	function column_form_title( $item ){

		$actions = array();

		// Edit Form
		$form_title = sprintf( '<strong><a href="?page=%s&form=%s" id="%3$s" class="view-form">%s</a></strong>', $_GET['page'], $item['form_id'], $item['form_title'] );
		$actions['edit'] = sprintf( '<a href="?page=%s&action=%s&form=%s" id="%3$s" class="view-form">%s</a>', $_GET['page'], 'edit', $item['form_id'], __( 'Edit', 'visual-form-builder' ) );

		// Duplicate Form
		$actions['copy'] = sprintf( '<a href="%s&action=%s&form=%s" id="%3$s" class="view-form">%s</a>', wp_nonce_url( admin_url( 'admin.php?page=visual-form-builder' ), 'copy-form-' . $item['form_id'] ), 'copy_form', $item['form_id'], __( 'Duplicate', 'visual-form-builder' ) );

		// Delete Form
		$actions['delete'] = sprintf( '<a href="%s&action=%s&form=%s" id="%3$s" class="view-form">%s</a>', wp_nonce_url( admin_url( 'admin.php?page=visual-form-builder' ), 'delete-form-' . $item['form_id'] ), 'delete_form', $item['form_id'], __( 'Delete', 'visual-form-builder' ) );

		return sprintf( '%1$s %2$s', $form_title, $this->row_actions( $actions ) );
	}

	function column_entries( $item ) {
		$this->comments_bubble( $item['form_id'], $item['entries'] );
	}

	function comments_bubble( $form_id, $count ) {

		echo sprintf(
			'<div class="entries-count-wrapper"><a href="%1$s" title="%2$s" class="vfb-meta-entries-total"><span class="entries-count">%4$s</span></a> %3$s</div>',
			esc_url( add_query_arg( array( 'form-filter' => $form_id ), admin_url( 'admin.php?page=vfb-entries' ) ) ),
			esc_attr__( 'Entries Total', 'visual-form-builder-pro' ),
			__( 'Total', 'visual-form-builder-pro' ),
			number_format_i18n( $count['total'] )
		);

		if ( $count['today'] )
			echo '<strong>';

		echo sprintf(
			'<div class="entries-count-wrapper"><a href="%1$s" title="%2$s" class="vfb-meta-entries-total"><span class="entries-count">%4$s</span></a> %3$s</div>',
			esc_url( add_query_arg( array( 'form-filter' => $form_id, 'today' => 1 ), admin_url( 'admin.php?page=vfb-entries' ) ) ),
			esc_attr__( 'Entries Today', 'visual-form-builder-pro' ),
			__( 'Today', 'visual-form-builder-pro' ),
			number_format_i18n( $count['today'] )
		);

		if ( $count['today'] )
			echo '</strong>';
	}

	/**
	 * Used for checkboxes and bulk editing
	 *
	 * @since 1.2
	 */
	function column_cb( $item ){
		return sprintf( '<input type="checkbox" name="%1$s[]" value="%2$s" />', $this->_args['singular'], $item['form_id'] );
	}

	/**
	 * Builds the actual columns
	 *
	 * @since 1.2
	 */
	function get_columns(){
		$columns = array(
			'cb' 			=> '<input type="checkbox" />', //Render a checkbox instead of text
			'form_title' 	=> __( 'Form' , 'visual-form-builder'),
			'form_id' 		=> __( 'Form ID' , 'visual-form-builder'),
			'entries'		=> __( 'Entries', 'visual-form-builder' ),
		);

		return $columns;
	}

	/**
	 * A custom function to get the entries and sort them
	 *
	 * @since 1.2
	 * @returns array() $cols SQL results
	 */
	function get_forms( $orderby = 'form_id', $order = 'ASC', $per_page, $offset = 0, $search = '' ){
		global $wpdb;

		// Set OFFSET for pagination
		$offset = ( $offset > 0 ) ? "OFFSET $offset" : '';

		$where = apply_filters( 'vfb_pre_get_forms', '' );

		// If the form filter dropdown is used
		if ( $this->current_filter_action() )
			$where .= ' AND forms.form_id = ' . $this->current_filter_action();

		$sql_order = sanitize_sql_orderby( "$orderby $order" );
		$cols = $wpdb->get_results( "SELECT forms.form_id, forms.form_title FROM $this->form_table_name AS forms WHERE 1=1 $where $search ORDER BY $sql_order LIMIT $per_page $offset" );

		return $cols;
	}

	/**
	 * Build the different views for the entries screen
	 *
	 * @since 2.7.6
	 * @returns array $status_links Status links with counts
	 */
	function get_views() {
		$status_links = array();
		$num_forms = $this->get_forms_count();
		$class = '';
		$link = '?page=visual-form-builder';

		$stati = array(
			'all'    => _n_noop( 'All <span class="count">(<span class="pending-count">%s</span>)</span>', 'All <span class="count">(<span class="pending-count">%s</span>)</span>' ),
		);

		$total_entries = (int) $num_forms->all;
		$entry_status = isset( $_GET['form_status'] ) ? $_GET['form_status'] : 'all';

		foreach ( $stati as $status => $label ) {
			$class = ( $status == $entry_status ) ? ' class="current"' : '';

			if ( !isset( $num_forms->$status ) )
				$num_forms->$status = 10;

			$link = add_query_arg( 'form_status', $status, $link );

			$status_links[ $status ] = "<li class='$status'><a href='$link'$class>" . sprintf(
				translate_nooped_plural( $label, $num_forms->$status ),
				number_format_i18n( $num_forms->$status )
			) . '</a>';
		}

		return $status_links;
	}

	/**
	 * Get the number of entries for use with entry statuses
	 *
	 * @since 2.1
	 * @returns array $stats Counts of different entry types
	 */
	function get_entries_count() {
		global $wpdb;

		$total_entries = array();

		$entries = $wpdb->get_results( "SELECT form_id, COUNT(form_id) as num_entries FROM $this->entries_table_name AS entries WHERE entries.entry_approved = 1 GROUP BY form_id", ARRAY_A );

		if ( $entries ) {
			foreach ( $entries as $entry )
				$total_entries[ $entry['form_id'] ] = absint( $entry['num_entries'] );

			return $total_entries;
		}

		return $total_entries;
	}

	/**
	 * Get the number of entries for use with entry statuses
	 *
	 * @since 2.1
	 * @returns array $stats Counts of different entry types
	 */
	function get_entries_today_count() {
		global $wpdb;

		$total_entries = array();

		$entries = $wpdb->get_results( "SELECT form_id, COUNT(form_id) as num_entries FROM $this->entries_table_name AS entries WHERE entries.entry_approved = 1 AND date_submitted >= curdate() GROUP BY form_id", ARRAY_A );

		if ( $entries ) {
			foreach ( $entries as $entry )
				$total_entries[ $entry['form_id'] ] = absint( $entry['num_entries'] );

			return $total_entries;
		}

		return $total_entries;
	}

	/**
	 * Get the number of forms
	 *
	 * @since 2.2.7
	 * @returns int $count Form count
	 */
	function get_forms_count() {
		global $wpdb;

		$stats = array();

		$count = $wpdb->get_var( "SELECT COUNT(*) FROM $this->form_table_name" );

		$stats['all'] = $count;

		$stats = (object) $stats;

		return $stats;
	}

	/**
	 * Setup which columns are sortable. Default is by Date.
	 *
	 * @since 1.2
	 * @returns array() $sortable_columns Sortable columns
	 */
	function get_sortable_columns() {
		$sortable_columns = array(
			'id' 			=> array( 'id', false ),
			'form_id'		=> array( 'form_id', false ),
			'form_title'	=> array( 'form_title', true ),
			'entries'		=> array( 'entries_count', false ),
		);

		return $sortable_columns;
	}

	/**
	 * Define our bulk actions
	 *
	 * @since 1.2
	 * @returns array() $actions Bulk actions
	 */
	function get_bulk_actions() {
		$actions = array();

		// Build the row actions
		$actions['delete'] = __( 'Delete Permanently', 'visual-form-builder' );

		return $actions;
	}

	/**
	 * Process ALL actions on the Entries screen, not only Bulk Actions
	 *
	 * @since 1.2
	 */
	function process_bulk_action() {
		global $wpdb;

		$form_id = '';

		// Set the Entry ID array
		if ( isset( $_POST['form'] ) ) {
			if ( is_array( $_POST['form'] ) )
				$form_id = $_POST['form'];
			else
				$form_id = (array) $_POST['form'];
		}

		switch( $this->current_action() ) {
			case 'trash' :
				foreach ( $form_id as $id ) {
					$id = absint( $id );
					$wpdb->update( $this->form_table_name, array( 'form_approved' => 'trash' ), array( 'form_id' => $id ) );
				}
			break;

			case 'delete' :
				foreach ( $form_id as $id ) {
					$id = absint( $id );
					$wpdb->query( $wpdb->prepare( "DELETE FROM $this->form_table_name WHERE form_id = %d", $id ) );
					$wpdb->query( $wpdb->prepare( "DELETE FROM $this->field_table_name WHERE form_id = %d", $id ) );
					$wpdb->query( $wpdb->prepare( "DELETE FROM $this->entries_table_name WHERE form_id = %d", $id ) );
				}
			break;

		}
	}

	/**
	 * Set our forms filter action
	 *
	 * @since 1.2
	 * @returns int Form ID
	 */
	function current_filter_action() {
		if ( isset( $_POST['form-filter'] ) && -1 != $_POST['form-filter'] )
			return absint( $_POST['form-filter'] );

		return false;
	}

	/**
	 * Display Search box
	 *
	 * @since 1.4
	 * @returns html Search Form
	 */
	function search_box( $text, $input_id ) {
	    parent::search_box( $text, $input_id );
	}

	/**
	 * Prepares our data for display
	 *
	 * @since 1.2
	 */
	function prepare_items() {
		global $wpdb;

		// get the current user ID
		$user = get_current_user_id();

		// get the current admin screen
		$screen = get_current_screen();

		// retrieve the "per_page" option
		$screen_option = $screen->get_option( 'per_page', 'option' );

		// retrieve the value of the option stored for the current user
		$per_page = get_user_meta( $user, $screen_option, true );

		// get the default value if none is set
		if ( empty ( $per_page) || $per_page < 1 )
			$per_page = $screen->get_option( 'per_page', 'default' );

		// Get the date/time format that is saved in the options table
		$date_format = get_option( 'date_format' );
		$time_format = get_option( 'time_format' );

		// What page are we looking at?
		$current_page = $this->get_pagenum();

		// Use offset for pagination
		$offset = ( $current_page - 1 ) * $per_page;

		// Get column headers
		$columns  = $this->get_columns();
		$hidden   = get_hidden_columns( $this->screen );

		// Get sortable columns
		$sortable = $this->get_sortable_columns();

		// Build the column headers
		$this->_column_headers = array($columns, $hidden, $sortable);

		// Get entries search terms
		$search_terms = ( !empty( $_POST['s'] ) ) ? explode( ' ', $_POST['s'] ) : array();

		$searchand = $search = '';
		// Loop through search terms and build query
		foreach( $search_terms as $term ) {
			$term = esc_sql( $wpdb->esc_like( $term ) );

			$search .= "{$searchand}((forms.form_title LIKE '%{$term}%') OR (forms.form_key LIKE '%{$term}%') OR (forms.form_email_subject LIKE '%{$term}%'))";
			$searchand = ' AND ';
		}

		$search = ( !empty($search) ) ? " AND ({$search}) " : '';

		// Set our ORDER BY and ASC/DESC to sort the entries
		$orderby  = ( !empty( $_GET['orderby'] ) ) ? $_GET['orderby'] : 'form_id';
		$order    = ( !empty( $_GET['order'] ) ) ? $_GET['order'] : 'desc';

		// Get the sorted entries
		$forms = $this->get_forms( $orderby, $order, $per_page, $offset, $search );

		// Get entries totals
		$entries_total = $this->get_entries_count();
		$entries_today = $this->get_entries_today_count();

		$data = array();

		// Loop trough the entries and setup the data to be displayed for each row
		foreach ( $forms as $form ) :

			// Check if index exists first, not every form has entries
			$entries_total[ $form->form_id ] = isset( $entries_total[ $form->form_id ] ) ? $entries_total[ $form->form_id ] : 0;

			// Check if index exists first, not every form has entries today
			$entries_today[ $form->form_id ] = isset( $entries_today[ $form->form_id ] ) ? $entries_today[ $form->form_id ] : 0;

			$entries_counts = array(
				'total' => $entries_total[ $form->form_id ],
				'today' => $entries_today[ $form->form_id ],
			);

			$data[] = array(
				'id' 			=> $form->form_id,
				'form_id'		=> $form->form_id,
				'form_title' 	=> stripslashes( $form->form_title ),
				'entries'		=> $entries_counts,
			);
		endforeach;

		// How many forms do we have?
		$total_items = $this->get_forms_count();

		// Add sorted data to the items property
		$this->items = $data;

		// Register our pagination
		$this->set_pagination_args( array(
			'total_items'	=> $total_items->all,
			'per_page'		=> $per_page,
			'total_pages'	=> ceil( $total_items->all / $per_page )
		) );
	}

	/**
	 * Display the pagination.
	 * Customize default function to work with months and form drop down filters
	 *
	 * @since 3.1.0
	 * @access protected
	 */
	function pagination( $which ) {

		if ( empty( $this->_pagination_args ) )
			return;

		extract( $this->_pagination_args, EXTR_SKIP );

		$output = '<span class="displaying-num">' . sprintf( _n( '1 form', '%s forms', $total_items ), number_format_i18n( $total_items ) ) . '</span>';

		$current = $this->get_pagenum();

		$current_url = ( is_ssl() ? 'https://' : 'http://' ) . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];

		$current_url = remove_query_arg( array( 'hotkeys_highlight_last', 'hotkeys_highlight_first' ), $current_url );

		$page_links = array();

		// Added to pick up the months dropdown
		$m = isset( $_POST['m'] ) ? (int) $_POST['m'] : 0;

		$disable_first = $disable_last = '';
		if ( $current == 1 )
			$disable_first = ' disabled';
		if ( $current == $total_pages )
			$disable_last = ' disabled';

		$page_links[] = sprintf( "<a class='%s' title='%s' href='%s'>%s</a>",
			'first-page' . $disable_first,
			esc_attr__( 'Go to the first page' ),
			esc_url( remove_query_arg( 'paged', $current_url ) ),
			'&laquo;'
		);

		// Modified the add_query_args to include my custom dropdowns
		$page_links[] = sprintf( "<a class='%s' title='%s' href='%s'>%s</a>",
			'prev-page' . $disable_first,
			esc_attr__( 'Go to the previous page' ),
			esc_url( add_query_arg( array( 'paged' => max( 1, $current-1 ), 'm' => $m, 'form-filter' => $this->current_filter_action() ), $current_url ) ),
			'&lsaquo;'
		);

		if ( 'bottom' == $which )
			$html_current_page = $current;
		else
			$html_current_page = sprintf( "<input class='current-page' title='%s' type='text' name='paged' value='%s' size='%d' />",
				esc_attr__( 'Current page' ),
				$current,
				strlen( $total_pages )
			);

		$html_total_pages = sprintf( "<span class='total-pages'>%s</span>", number_format_i18n( $total_pages ) );
		$page_links[] = '<span class="paging-input">' . sprintf( _x( '%1$s of %2$s', 'paging' ), $html_current_page, $html_total_pages ) . '</span>';

		$page_links[] = sprintf( "<a class='%s' title='%s' href='%s'>%s</a>",
			'next-page' . $disable_last,
			esc_attr__( 'Go to the next page' ),
			esc_url( add_query_arg( array( 'paged' => min( $total_pages, $current+1 ), 'm' => $m, 'form-filter' => $this->current_filter_action() ), $current_url ) ),
			'&rsaquo;'
		);

		// Modified the add_query_args to include my custom dropdowns
		$page_links[] = sprintf( "<a class='%s' title='%s' href='%s'>%s</a>",
			'last-page' . $disable_last,
			esc_attr__( 'Go to the last page' ),
			esc_url( add_query_arg( array( 'paged' => $total_pages, 'm' => $m, 'form-filter' => $this->current_filter_action() ), $current_url ) ),
			'&raquo;'
		);

		$pagination_links_class = 'pagination-links';
		if ( ! empty( $infinite_scroll ) )
			$pagination_links_class = ' hide-if-js';
		$output .= "\n<span class='$pagination_links_class'>" . join( "\n", $page_links ) . '</span>';

		if ( $total_pages )
			$page_class = $total_pages < 2 ? ' one-page' : '';
		else
			$page_class = ' no-pages';

		$this->_pagination = "<div class='tablenav-pages{$page_class}'>$output</div>";

		echo $this->_pagination;
	}

}
