<?php
/*
Plugin Name: Open Mic Friday
Version: 0.2
Plugin URI: http://www.technosailor.com/wordpress-plugin-open-mic-friday/
Description: Temporarily promotes all users to a minimum of Contributor role.
Author: Aaron Brazell
Author URI: http://www.technosailor.com

*/


function manage_openmic() {
    global $wpdb;
    if ( function_exists('add_submenu_page') )
        add_submenu_page('options-general.php', 'Open Mic Friday', 'Open Mic Friday', 1, basename(__FILE__), 'mic_config');
}

function mic_config()
{
    echo'<div class="wrap">';
    echo'<h2>'.__('Open Mic Friday').'</h2>';
    if(isset($_POST['save']))
    {
        if(get_option('open-mic-day'))
            update_option('open-mic-day',$_POST['open-mic-day']);
        else 
            add_option('open-mic-day',$_POST['open-mic-day']);
        echo "<div id='moderated' class='updated fade'>\n<p>";
        _e('Settings Updated.');
        echo'</p></div>';
    }
    
    
    $open_mic_day = (get_option('open-mic-day')) ? get_option('open-mic-day') : 'Fri';
    $days = array('Sun','Mon','Tue','Wed','Thu','Fri','Sat');
        echo'<p>'.__('Open Mic Friday can be on any day... not just Friday.  Pick which day you want open Mic Friday to be on.').'</p>';
        echo'<form action="options-general.php?page=open-mic-friday.php" method="post">';
            echo'<label for="open-mic-day">Day of Week: </label>';
            echo'<select name="open-mic-day">';
            foreach($days as $day)
            {
                echo ($day == $open_mic_day) ? '<option value="'.$day.'" selected="selected">'.$day.'</option>' : '<option value="'.$day.'">'.$day.'</option>';
            }
            echo'</select>';
            echo'<input type="submit" name="save" value="Save" />';
        echo'</form>';
    echo'</div>';
}

function temp_promote()
{
    global $current_user;

    $open_mic_day = (get_option('open-mic-day')) ? get_option('open-mic-day') : 'Fri';
    // If there is no user id set or it is less than 1, break out
    if(1 >= $current_user->id || empty($current_user->id))
        return;
        
    // If today is our appointed day...
    if($open_mic_day == date('D',current_time('timestamp')))
    {
        // ...and the current user cannot edit posts
        if(!current_user_can('edit_posts'))
        {
            foreach($current_user->roles as $oldrole)
                update_usermeta($current_user->id,'temp_promotion',$oldrole);
            $current_user->set_role('contributor');
        }
        else 
            return;
            
    }
    else 
    {
        if(current_user_can('edit_posts') && (get_usermeta($current_user->id,'temp_promotion')))
        {
            $current_user->set_role(get_usermeta($current_user->id,'temp_promotion'));
            delete_usermeta($current_user->id,'temp_promotion');
            return;
        }
    }
    return;
}

add_action('wp_head','temp_promote');
add_action('admin_menu', 'manage_openmic');
?>