<?php
/*
Plugin Name: Sort Posts
Description: Allows for the reordering of posts
*/
//actions
//add buttton to dashboard
add_action('admin_menu','add_sort_post_button');
//add meta box
add_action('admin_init','add_painting_meta_box');
//add button to plugins menu
function add_sort_post_button(){
    add_submenu_page('plugins.php', 'Sort Posts', 'Sort Posts', 'manage_options', 'sort-posts','sort_posts_admin');
}
//add_meta box
function add_painting_meta_box(){
    add_meta_box('painting_order', 'Painting Number', 'post_sort_metabox', 'paintings', 'normal', 'high');
}
//create meta box
function post_sort_metabox(){
    global $post;
?>
<label>Painting Order Number</label>
<input type="text" value="<?php echo get_post_meta($post->ID, 'painting_order', true); ?>" readonly/>
<?php
}
//construct admin page
function sort_posts_admin(){
    $taxonomies = get_taxonomies();
    $taxonomy_list = implode(",", $taxonomies);
    //echo $taxonomy_list;
    $category_list = get_terms(array('paintings_type'));
    //echo "<pre>";
    //print_r($category_list);
    //echo "</pre>";
?>
<div class="wrap"></div>
<p>Sort Post</p>
<form action="" method="post">
<select name="category_id">
<option value="">Select Painting Type</option>
<?php
foreach($category_list as $individual):
?>
<option value="<?php echo $individual->slug; ?>"><?php echo $individual->name ?></option>
<?php endforeach; ?>
</select>
<input class="button-primary" type="submit" value="Filter" name="filter" />
</form>
</div>
<form method="post" action="">
<ul>
<?php
if($_POST['filter'] == 'Filter'){
    global $post;
    //$key = $_POST["category_id"];
    $key = $_POST['category_id'];
        $i = 0;
query_posts( array( 'post_type' => 'paintings', 'showposts' => 100, 'paintings_type' => $key ));

if ( have_posts() ) : while ( have_posts() ) : the_post();

?>
    <li><label><?php echo the_title(); ?></label><input name="<?php $i++; $a = $i-1; echo "updates[$a]"; ?>" value="<?php echo  $post->ID .'.'. get_post_meta($post->ID, 'painting_order', true); ?>" /></li>
<?php
    endwhile;
    endif;
    wp_reset_query();
?>
</ul>
<input type="submit" name="update" value="Update" />
</form>
<?php
}
if($_POST['update'] == 'Update'){

foreach($_POST['updates'] as $update){

    //echo $update;
    $point_slot = strpos($update, ".");
    $point =  substr($update, 0, $point_slot);
    $custom_key = "painting_order";
    $value = $update;
    $update_new = str_replace(".", "", stristr($value, "."));
    update_post_meta($point $custom_key, $update_new);
    }

}

}

?>