<?php

function get_capable_roles(){
	$author_discussion_capability = get_option('author_discussion_capability');
	
	if($author_discussion_capability == 'publish_posts'){
		// author and higher
		$users = get_users('who=authors');
		return $users;
		
	}elseif($author_discussion_capability == 'moderate_comments'){
		// editor and higher
		$argsa = array( 'role' => 'administrator' );
		$a = get_users( $argsa );
		
		$argsb = array ('role' => 'editor' );
		$b = get_users( $argsb );
		
		$users = array_merge( $a, $b);
		return $users;
		
	}elseif($author_discussion_capability == 'manage_options'){
		// admins
		$users = get_users('role=administrator');
		return $users;
	}
}

function author_discuss_process_message(){
	global $wpdb;
	$table_name = $wpdb->prefix . "authordiscuss";
	
	if(isset($_POST['author_message'])){
		// Grab Contents & Post
		//$message = sanitize_text_field($_POST['author_message']);
		$message = $_POST['author_message'];

		$userid = $_POST['userid'];
		$time = date("Y-m-d H:i:s", strtotime('-5 hours'));
		
		// Check for tampered userid
		if(is_numeric($userid) == true){
			//POST
			$wpdb->insert(
				$table_name,
				array( 
					'userid' => $userid,
					'time' => $time,
					'text' => $message
				),
				array( '%d', '%s', '%s')
			);
			
			// after message post, notify users
			// FUTURE UPDATE: ALTER TABLE INSTEAD OF THIS? 
			// ADD HOOKS TO INSERT OPEN STRING FOR NEW USERS/PROMOTION
			$users = get_capable_roles();
			foreach($users as $user){
				 
				if($user->ID != get_current_user_id()){
				
					$value = get_user_meta($user->ID, 'author_discussion_unread_posts', true);
					
					if($value)
						$value = ++$value;
					else
						$value = 1;
					update_user_meta($user->ID, 'author_discussion_unread_posts', $value);
				}
			}
			
		}else{
			wp_die('There were issues with the information sent.');
		}
		
		
	}
	
	wp_redirect( admin_url( 'admin.php?page=author-discussion/admin/admin.php&m=1' ) );
	exit;
}

?>