/* To add excerpt support to pages */

add_action( 'init', 'add_pageexcerpt' );
function add_pageexcerpt() {
	 add_post_type_support( 'page', 'excerpt' );
}

/* To add excerpt support to pages */

/* Add tag for placing on the carosel */

add_action( 'admin_init', 'put_this_on_frontpage' );

function put_this_on_frontpage() {
	add_meta_box( 'frontpage_meta_box',
	'Put this page on the homepage?',
	'display_homepage_meta_box',
	'page', 'normal', 'high' );
}

function display_homepage_meta_box( $page ) {
	$homepagecheck = esc_html( get_post_meta( $page->ID, 'homepagecheckbox', true ) );
	$homepageurl = esc_html( get_post_meta( $page->ID, 'homepageurl', true ) );
	?>
	<table>
		<tr>
			<td style="width: 300px">Put this page on the homepage?</td><td><select style="width: 100px" name="homepageyesno"><?php foreach (array('No' , 'Yes') as $yesorno) { ?><option value="<?php echo $yesorno; ?>"<?php echo selected( $yesorno, $homepagecheck ); ?>><?php echo $yesorno; ?></option><?php } ?></select></td>
		</tr>
		<tr>
			<td style="width: 300px">Enter a new url here if you want to direct to a different page. Please include the http:// portion of the link for this to work.</td><td><textarea cols="100" rows="2" name="homepageurl"><?php echo $homepageurl; ?></textarea></td>
		</tr>
	</table>

<?php	
}

add_action( 'save_post', 'add_homepagedata', 10, 2 );

function add_homepagedata( $page_id, $pagedata ) {
	if ( $pagedata->post_type == 'page' ) {
		if ( isset( $_POST['homepageyesno'] ) && $_POST['homepageyesno'] != '' ) {
			update_post_meta( $page_id, 'homepagecheckbox', $_POST['homepageyesno'] );
			if (get_post_meta( $page_id, 'homepageordernumber', true )) {
			} else {
				update_post_meta( $page_id, 'homepageordernumber', 0 );
			}
		}
		if ( isset( $_POST['homepageurl'] ) && $_POST['homepageurl'] != '' ) {
			update_post_meta( $page_id, 'homepageurl', $_POST['homepageurl'] );
		} elseif (get_post_meta( $page_id, 'homepageurl', true )) {
			delete_post_meta($page_id, 'homepageurl' );
		}
	}
}

/* Add tag for placing on the carosel */

/* This creates the admin menu for altering the order of the slides on the home page */


add_action( 'admin_menu', 'homepage_slider_order' );

function homepage_slider_order() {
	add_options_page( 'Homepage Options', 'Edit Homepage Slider', 'manage_options', 'change_homepage_order', 'display_homepageorder_options' );
}


function display_homepageorder_options() {
	if ( !current_user_can( 'manage_options' ) )  {
		wp_die( __( 'You do not have sufficient permissions to access this page.' ) );
	}
	
	if (!empty($_POST)) {
		echo '<br /><h1>Changes successfully made!</h1>';
		$postsprocessed = 0;
		foreach ($_POST['ordernumber'] as $number) {
			if (empty($number)) {
				$number = 0;
			}
			update_post_meta( $_POST['orderid'][$postsprocessed], 'homepageordernumber', $number );
			$postsprocessed++;
		}
	}
	
	screen_icon();
	echo '<br /><h2>Alter the order in which slides on the homepage appear</h2><br />Please enter suitable numbers in the boxes provided. The lower the number the earlier in the slider sequence that page will appear.<br /><br />';
	echo '<div class="wrap">';
	
	wp_reset_postdata();
	
	$featured_args = array(
						'post_type' => 'page',
						'posts_per_page' => -1,
						'orderby' => 'meta_value_num',
						'meta_key' => 'homepageordernumber',
						'order' => 'ASC',
						'meta_query' => array( array (
							'key' => 'homepagecheckbox',
							'value' => 'Yes'
							))
						);
	$featured = new WP_Query( $featured_args );
	
	if ( $featured->have_posts() ) {
		echo '<form id="assignments" enctype="multipart/form-data" action="" method="POST">';
		$postsprocessed = 0;
		while ( $featured->have_posts() ) {
			$featured->the_post();
			$idofpost = get_the_ID();
			$homenumberofpost = get_post_meta( $idofpost, 'homepageordernumber', true );
			echo '<input type="hidden" name="orderid['.$postsprocessed.']" value="'.$idofpost.'"/>';
			$postsprocessed5 = ($postsprocessed + 1)*5 ;
			echo '<textarea cols="4" rows="1" name="ordernumber['.$postsprocessed.']">'.$postsprocessed5.'</textarea>&nbsp;&nbsp;&nbsp;&nbsp;<b>'.get_the_title().'</b><br /><br />';
			$postsprocessed++ ;
			
			//echo get_post_meta( $idofpost, 'homepageorder', true ).'<br /><br />';
		}
	}
	
	echo '<input type="submit" name="submit" value="Click to commit your changes" style="border: 3px black solid; height: 50px; width:600px;" />';
	
	wp_reset_postdata();
	echo '</form>' ;
	
	echo '</div>';
}



/* This creates the admin menu for altering the order of the slides on the home page */