<?php

/*
Plugin Name: ArtistDataPress
Plugin URI: http://slushman.com/plugins/artistdatapress
Description: Display your ArtistData show feed on your WordPress site and customize how it appears.  ADP now uses the PHP functions cURL and SimpleXML to fetch and display your ArtistData XML feed.
Version: 0.41
Author: Slushman
Author URI: http://www.slushman.com
License: GPLv2

**************************************************************************

  Copyright (C) 2012 Slushman

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General License for more details.

  You should have received a copy of the GNU General License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.

**************************************************************************

To-Do List

* Get time and date jquery previews working
* * http://core.trac.wordpress.org/browser/trunk/wp-admin/options-general.php - see add_js
* Add additional layouts
* Add additional layouts for widgets
* Check out admin_notices: http://www.instantshift.com/2012/03/06/21-most-useful-wordpress-admin-page-hacks/
* Auto-blog a post the day of a show with the details of that show
* Add support for feeds from Sonicbids and Reverbnation - any others?
*/

if ( !class_exists( "ArtistDataPress_Plugin" ) ) { //Start Class

	class ArtistDataPress_Plugin {
	
		public static $instance;
	    private $settings_tabs 	= array();
	
		function __construct() {
		
			self::$instance = $this;
			
			// Runs when plugin is activated
			register_activation_hook( __FILE__, array( $this, 'create_options' ) ); 
			add_action( 'init', array( &$this, 'load_settings' ) );
			
			// Queues the included stylesheet
			add_action( 'wp_enqueue_scripts', array( $this, 'add_styles' ) );
			
			// Queues the layout stylesheets for the admin page
			add_action( 'admin_enqueue_scripts', array( $this, 'admin_enqueue' ) );
			
			// Adds the ArtistDataPress option menu to the Settings menu
			add_action( 'admin_menu', array( $this, 'add_menu' ) );
			
			//	Add "Settings" link to plugin page
			add_filter( 'plugin_action_links_' . plugin_basename( __FILE__ ) , array( $this, 'settings_link' ) );
			
			// Create shortcode [artistdatapress]
			add_shortcode( 'artistdatapress', array( $this, 'shortcode' ) );
			
			// Include other files
			add_action( 'init', array( $this, 'file_includer' ) );
			
			// Options tabs
			add_action( 'admin_init', array( &$this, 'register_general_settings' ) );
			add_action( 'admin_init', array( &$this, 'register_layout_settings' ) );
			add_action( 'admin_enqueue_scripts', array( $this, 'example_js' ) );
		
		} // End of __construct()

		function create_options() {
		
			if ( get_option( 'slushman_adp_options' ) ) {

				$options = get_option( 'slushman_adp_options' );
				
				$general['xml_url'] 		= $options['slushman_adp_xml_url'];
				$general['adpage_url']		= $options['slushman_adp_adpage_url'];
				$general['display_name']	= $options['slushman_adp_display_name'];
				$general['display_time']	= $options['slushman_adp_display_time'];
				$general['display_tickets']	= $options['slushman_adp_display_tickets'];
				$general['display_age']		= $options['slushman_adp_display_age'];
				$general['display_artist']	= $options['slushman_adp_display_artist'];
				$general['display_country']	= $options['slushman_adp_display_country'];
				$general['max_shows']		= $options['slushman_adp_max_shows'];
				$general['no_shows_msg']	= $options['slushman_adp_no_shows'];
				
				$general['display_stage']	= 
				$general['adp_time_format']	= 
				$general['adp_date_format']	= '';
				$layout['adp_layout'] 		= 'Classic Style';

				delete_option( 'slushman_adp_options' );
				
			} else {
				
				$general['xml_url'] 		= 
				$general['adpage_url']		= 
				$general['display_name']	= 
				$general['display_time']	= 
				$general['display_tickets']	= 
				$general['display_age']		=
				$general['display_artist']	=
				$general['display_country']	= 
				$general['display_stage']	= 
				$general['adp_time_format']	= 
				$general['adp_date_format']	= 
				$general['max_shows']		= '';
				$general['no_shows_msg']	= 'There are no shows currently scheduled.';
				$layout['adp_layout'] 		= 'Classic Style';
				
			} // End of previous options check

			update_option( 'slushman_adp_general_settings', $general );
			update_option( 'slushman_adp_layout_settings', $layout );
			
		} // End of create_options()
		
		function load_settings() {
		
		    $this->gensets = (array) get_option( 'slushman_adp_general_settings' );
		    $this->laysets = (array) get_option( 'slushman_adp_layout_settings' );
		    
		    $genset['xml_url'] 			= 
			$genset['adpage_url']		= 
			$genset['display_name']		= 
			$genset['display_time']		= 
			$genset['display_tickets']	= 
			$genset['display_age']		=
			$genset['display_artist']	=
			$genset['display_country']	= 
			$genset['display_stage']	= 
			$genset['adp_time_format']	= 
			$genset['adp_date_format']	= 
			$genset['max_shows']		= '';
			$genset['no_shows_msg']		= 'There are no shows currently scheduled.';
		    
		    $layset['adp_layout'] 		= 'Classic Style';
		    
		    // Merge with defaults
			$this->gensets = array_merge( $genset, $this->gensets );
			$this->laysets = array_merge( $layset, $this->laysets );
		
		}

		
// Options Page
		
		function add_menu() {
		
			add_options_page( 
				'ArtistDataPress Options', 
				'ArtistDataPress', 
				'manage_options', 
				'slushman-adp', 
				array( $this, 'options_page' ) 
			);
		
		} // End of add_menu()
		
		function settings_link( $links ) {
		
			$slushman_adp_settings_link = sprintf( '<a href="%s">%s</a>', admin_url( 'options-general.php?page=slushman-adp' ), __( 'Settings' ) );
		
			array_unshift( $links, $slushman_adp_settings_link );
		
			return $links;
		
		} // End of settings_link()
		
		function options_page() { 
		
			$obd 	= ini_get( 'open_basedir' );
			$safe 	= ini_get( 'safe_mode' );
			
			if ( $obd != '' || $safe == '1' ) {
				
				if ( $obd != '' ) {
				
					echo '<p>Your PHP settings are incompatible with ArtistDataPress.  The PHP setting, open_basedir is currently ' . $odb . '.  Please change the setting on your server to empty.</p>';
					echo '';
				
				} 
				
				if ( $safe == '1' ) {
				
					echo '<p>Your PHP settings are incompatible with ArtistDataPress.  PHP\'s  Safe Mode is currently turned on, and it needs to be off.  Please turn off Safe Mode on your server.</p>';
					echo '';
				
				}
				
			} else {
		
				$tab = ( isset( $_GET['tab'] ) ? $_GET['tab'] : 'slushman_adp_general_settings' ); ?>
				
				<div class="wrap">
				
			    	<div class="icon32" style="background-image:url(<?php echo plugins_url( 'images/artistdatapress-logo32x32.png', __FILE__ ); ?>); background-repeat:no-repeat;"><br /></div>
			    	
			    	<h2 class="nav-tab-wrapper"><?php
			    
			    foreach ( $this->settings_tabs as $key => $caption ) {
			    
			        $active = ( $tab == $key ? 'nav-tab-active' : '' );
			    
			        echo '<a href="?page=slushman-adp&tab=' . $key . '" class="nav-tab ' . $active . '">' . $caption . '</a>';
			
			    } // End of settings_tabs foreach ?>
			
			    	</h2>
			    	
					<form method="post" action="options.php"><?php
					
						settings_fields( $tab );
						do_settings_sections( $tab );
						submit_button(); ?>
						
					</form>
				
				</div><!-- End of .wrap --><?php
				
			} // End of qualifications check
		
		} // End of options_page()

		function register_general_settings() {
		
			$this->settings_tabs['slushman_adp_general_settings'] = 'ArtistDataPress Settings';
		
			register_setting( 'slushman_adp_general_settings', 'slushman_adp_general_settings', array( $this, 'validate_options' ) );
			
			add_settings_section( 'slushman_adp_urls', 'ArtistData URLs', array( $this, 'url_section' ), 'slushman_adp_general_settings' );
			
				add_settings_field( 'slushman_adp_xml_url_field', 'ArtistData XML feed URL', array( $this, 'xml_url_field' ), 'slushman_adp_general_settings', 'slushman_adp_urls' );
				
				add_settings_field( 'slushman_adp_adpage_url_field', 'ArtistData Profile URL', array( $this, 'adpage_url_field' ), 'slushman_adp_general_settings', 'slushman_adp_urls' );
			
			add_settings_section( 'slushman_adp_display', 'ArtistData Display Options', array( $this, 'display_section' ), 'slushman_adp_general_settings');
			
				add_settings_field( 'slushman_adp_max_shows_field', 'Display how many shows?', array( $this, 'max_shows_field' ), 'slushman_adp_general_settings', 'slushman_adp_display' );
				
				add_settings_field( 'slushman_adp_display_name_field', 'Display show name?', array( $this, 'display_name_field' ), 'slushman_adp_general_settings', 'slushman_adp_display' );
				
				add_settings_field( 'slushman_adp_display_stage_field', 'Display venue stage?', array( $this, 'display_stage_field' ), 'slushman_adp_general_settings', 'slushman_adp_display' );
				
				add_settings_field( 'slushman_adp_display_artist_field', 'Display artist name?', array( $this, 'display_artist_field' ), 'slushman_adp_general_settings', 'slushman_adp_display' );
				
				add_settings_field( 'slushman_adp_display_tickets_field', 'Display ticket price?', array( $this, 'display_tickets_field' ), 'slushman_adp_general_settings', 'slushman_adp_display' );
				
				add_settings_field( 'slushman_adp_display_age_field', 'Display age limits?', array( $this, 'display_age_field' ), 'slushman_adp_general_settings', 'slushman_adp_display' );
				
				add_settings_field( 'slushman_adp_display_country_field', 'Display country?', array( $this, 'country_field' ), 'slushman_adp_general_settings', 'slushman_adp_display' );
				
				add_settings_field( 'slushman_adp_no_shows_field', 'Customize your "No shows" message', array( $this, 'no_shows_field' ), 'slushman_adp_general_settings', 'slushman_adp_display' );
			
			add_settings_section( 'slushman_adp_times', 'Times and Dates Display', array( $this, 'time_section' ), 'slushman_adp_general_settings');
			
				add_settings_field( 'slushman_adp_display_time_field', 'Display show time?', array( $this, 'display_time_field' ), 'slushman_adp_general_settings', 'slushman_adp_times' );
				
				add_settings_field( 'slushman_adp_time_format_field', 'Time format:', array( $this, 'display_time_format_field' ), 'slushman_adp_general_settings', 'slushman_adp_times' );
				
				add_settings_field( 'slushman_adp_date_format_field', 'Date format:', array( $this, 'display_date_format_field' ), 'slushman_adp_general_settings', 'slushman_adp_times' );
			
			add_settings_section( 'slushman_adp_support', 'Support and Improve ADP', array( $this, 'support_section' ), 'slushman_adp_general_settings');
			
				add_settings_field( 'slushman_adp_support_field', 'Support ADP today:', array( $this, 'support_preference_field' ), 'slushman_adp_general_settings', 'slushman_adp_support' );
					
		} // End of register_general_settings()
		
		function register_layout_settings() {
		
			$this->settings_tabs['slushman_adp_layout_settings'] = 'ArtistDataPress Layouts';
		
			register_setting( 'slushman_adp_layout_settings', 'slushman_adp_layout_settings' );
						
			add_settings_section( 'slushman_adp_layout', 'Choose the Layout', array( $this, 'layout_section' ), 'slushman_adp_layout_settings' );
			
				add_settings_field( 'slushman_adp_layout_field', 'Choose the layout for your events.', array( $this, 'layout_preference_field' ), 'slushman_adp_layout_settings', 'slushman_adp_layout' );
						
		} // End of register_layout_settings()

		function url_section() {
		
			echo '<p>The ArtistData XML feed URL can be found on your ArtistData account by going to Tools > Data Feeds.</p>';
		
		}
		
			function xml_url_field() { ?>
				
				<input id="xml_url" style="width:400px;" name="slushman_adp_general_settings[xml_url]" value="<?php echo $this->gensets['xml_url']; ?>" type="text" /><?php
				
			}
			
			function adpage_url_field() { ?>
				
				<input id="slushman_adp_adpage_url" style="width:400px;" name="slushman_adp_general_settings[adpage_url]" type="text" value="<?php echo $this->gensets['adpage_url']; ?>" /><?php
							
			}
		
		function display_section() {
		
			echo '<p>Choose what information you want displayed on your calendar.</p>';
		
		}
		
			function max_shows_field() {
				
				$max = ( empty( $this->gensets['max_shows'] ) ? 'All' : $this->gensets['max_shows'] ); ?>
				
				<input id="slushman_adp_max_shows" style="width:400px;" name="slushman_adp_general_settings[max_shows]" type="text" value="<?php echo $max; ?>" /><?php
			
			}	
			
			function display_name_field() { ?>
			
				<input id="slushman_adp_display_name" name="slushman_adp_general_settings[display_name]" type="checkbox" value="on" <?php checked( $this->gensets['display_name'], 'on' ); ?> /><?php
			
			}
			
			function display_stage_field() { ?>
			
				<input id="slushman_adp_display_stage" name="slushman_adp_general_settings[display_stage]" type="checkbox" value="on" <?php checked( $this->gensets['display_stage'], 'on' ); ?> /><?php
			
			}
			
			function display_artist_field() { ?>
			
				<input id="slushman_adp_display_artist" name="slushman_adp_general_settings[display_artist]" type="checkbox" value="on" <?php checked( $this->gensets['display_artist'], 'on' ); ?> /><?php
			
			}
			
			function display_tickets_field() { ?>
			
				<input id="slushman_adp_display_tickets" name="slushman_adp_general_settings[display_tickets]" type="checkbox" value="on" <?php checked( $this->gensets['display_tickets'], 'on' ); ?> /><?php
			
			}
			
			function display_age_field() { ?>
			
				<input id="slushman_adp_display_age" name="slushman_adp_general_settings[display_age]" type="checkbox" value="on" <?php checked( $this->gensets['display_age'], 'on' ); ?> /><?php
			
			}
			
			function country_field() { ?>
			
				<input id="slushman_adp_display_country" name="slushman_adp_general_settings[display_country]" type="checkbox" value="on" <?php checked( $this->gensets['display_country'], 'on' ); ?> /><?php
			
			}
			
			function no_shows_field() { ?>
				
				<input id="slushman_adp_no_shows" style="width:400px;" name="slushman_adp_general_settings[no_shows_msg]" type="text" value="<?php echo $this->gensets['no_shows_msg']; ?>" /><?php
						
			}
		
		function time_section() {
		
			echo '<p>Choose how you want to format your times and dates.</p>';
		
		}
		
			function display_time_field() { ?>
			
				<input id="slushman_adp_display_time" name="slushman_adp_general_settings[display_time]" type="checkbox" value="on" <?php checked( $this->gensets['display_time'], 'on' ); ?> /><?php
			
			}

			function display_time_format_field() { ?>
							
				<table>
					<tbody>
						<tr>
							<td style="vertical-align:top;padding-left:0;">
								<input type="text" name="slushman_adp_general_settings[adp_time_format]" value="<?php echo $this->gensets['adp_time_format']; ?>" class="small-text" />
								<span class="example"><?php echo date_i18n( $this->gensets['adp_time_format'] ); ?></span> 
								<img class="ajax-loading" src="<?php echo esc_url( admin_url( 'images/wpspin_light.gif' ) ); ?>" />
							</td>
							<td class="description" style="vertical-align:top;">
								<ul style="margin-top:0;">
									<li>Examples...</li><?php
									
									$formats = array( 'g:i a', 'g:i A', 'H:i', 'h:i' );
							
									foreach ( $formats as $format ) { ?>
				
									<li>
										<span style="width:25px;display:inline-block;"><?php echo $format; ?></span>
										<span style="margin:0 5px;">=</span>
										<span><?php echo date_i18n( $format ); ?></span>
									</li><?php
				
									} // End of $formats foreach ?>
									
								</ul>
							</td>
						</tr>
					</tbody>
				</table><?php
				
			} // End of display_time_format_field()
			
			function display_date_format_field() { ?>
			
				<table>
					<tbody>
						<tr>
							<td style="vertical-align:top;padding-left:0;">
								<input type="text" name="slushman_adp_general_settings[adp_date_format]" value="<?php echo $this->gensets['adp_date_format']; ?>" class="small-text" />
								<span class="example"><?php echo date_i18n( $this->gensets['adp_date_format'] ); ?></span> 
								<img class="ajax-loading" src="<?php echo esc_url( admin_url( 'images/wpspin_light.gif' ) ); ?>" />
							</td>
							<td class="description" style="vertical-align:top;">
								<ul style="margin-top:0;">
									<li>Examples...</li><?php
									
									$formats = array( 'D n/d/Y', 'l, n/d/Y', 'M j, Y', 'm/d/Y', 'd/m/Y' );
							
									foreach ( $formats as $format ) { ?>
				
									<li>
										<span style="width:40px;display:inline-block;"><?php echo $format; ?></span>
										<span style="margin:0 5px;">=</span>
										<span><?php echo date_i18n( $format ); ?></span>
									</li><?php
				
									} // End of $formats foreach ?>
									
								</ul>
							</td>
							<td class="description" style="vertical-align:top;">
								Please note: These settings do not apply to the iCal layout.
							</td>
						</tr>
						<tr>
							<td colspan="3">Please see the <?php echo __( '<a href="http://codex.wordpress.org/Formatting_Date_and_Time">documentation on date and time formatting</a> for additional formats.' ); ?>
							</td>
						</tr>
					</tbody>
				</table><?php
			
			} // End of display_date_format_field()	
			
			function example_js() { ?>
 		
	 			<script type="text/javascript">
	 			//<![CDATA[	
	 			
	 			jQuery(document).ready(function($){		
	 				
	 				/*
		 			$("input[name='date_format']").click(function(){
		 				if ( "date_format_custom_radio" != $(this).attr("id") ) {
		 					$("input[name='date_format_custom']").val( $(this).val() ).siblings('.example').text( $(this).siblings('span').text() );
		 				}
		 			});
		 			
		 			$("input[name='date_format_custom']").focus(function(){
		 				$("#date_format_custom_radio").attr("checked", "checked");
		 			});
		 			
		 			$("input[name='time_format']").click(function(){
		 				if ( "time_format_custom_radio" != $(this).attr("id") ) {
		 					$("input[name='time_format_custom']").val( $(this).val() ).siblings('.example').text( $(this).siblings('span').text() );
		 				}
		 			});
		 			
		 			$("input[name='time_format_custom']").focus(function(){
		 				$("#time_format_custom_radio").attr("checked", "checked");
		 			});
		 			
		 			$("input[name='date_format_custom'], input[name='time_format_custom']").change( function() {
		 				var format = $(this);
		 				format.siblings('img').css('visibility','visible');
		 				$.post(ajaxurl, {
		 					action: 'date_format_custom' == format.attr('name') ? 'date_format' : 'time_format',
		 					date : format.val()
		 				}, function(d) { format.siblings('img').css('visibility','hidden'); format.siblings('.example').text(d); } );		
		 			*/
		 			
		 			$("input[name='slushman_adp_general_settings[adp_date_format]'], input[name='slushman_adp_general_settings[adp_time_format]']").change( function() {
		 				var format = $(this);
		 				format.siblings('img').css('visibility','visible');
		 				$.post(ajaxurl, {
		 					action: 'slushman_adp_general_settings[adp_date_format]' == format.attr('name') ? '$this->gensets[\'adp_date_format\']' : '$this->gensets[\'adp_time_format\']',
		 					date : format.val()
		 				}, function(d) { format.siblings('img').css('visibility','hidden'); format.siblings('.example').text(d); } );		

		 			});	
	 			
	 			}); // End of jquery
	 			//]]>
	 			</script><?php
	 			
			} // End of example_js()
			
			function layout_section() {
			
				echo '';
			
			} // End of layout_section()
				
			function layout_preference_field() {
				
				$layout 	= new Layout; 
				$choices 	= array( 'Classic Style', 'iCal Style' );
				$i 			= 0; ?>
				
				<fieldset><legend class="screen-reader-text"><span><?php _e('Layout') ?></span></legend><?php
				
				foreach ( $choices as $choice ) { ?>
					
					<div style="overflow:hidden;<?php if ( $i > 0 ) { echo 'margin-top:25px;'; } ?>">
						<label title="<?php echo $choice;?>">
							<input type="radio" name="slushman_adp_layout_settings[adp_layout]" value="<?php echo $choice;?>" <?php checked( $this->laysets['adp_layout'], $choice ); ?> />
							<span><?php echo $choice;?></span>
						</label><br /><br />
			
						<?php $layout->get_layout( array( 'layout' => $choice, 'limit' => 3, 'source' => 'layout' ) ); ?>
					</div><!-- End of <?php echo $choice;?> Layout Demo --><?php
					
					$i++;
					
				} // End of $choices foreach ?>

				</fieldset><?php
			
			} // End of layout_preference_field()
			
		function support_section() {
		
			echo 'Like this plugin? Want to help improve it? All donations will go towards improving ArtistDataPress, so donate $5, $10, or $20 now!';
		
		} // End of support_section()
				
			function support_preference_field() { ?>
			
				<table id="slushman_adp_support_table">
					<tbody>
						<tr>
							<td style="vertical-align:top;padding:8px 25px;">
								<form action="https://www.paypal.com/cgi-bin/webscr" method="post">
									<input type="hidden" name="cmd" value="_s-xclick">
									<input type="hidden" name="hosted_button_id" value="XZ2NG2UNFKDTN">
									<input type="image" src="https://www.paypalobjects.com/en_US/i/btn/btn_donateCC_LG.gif" border="0" name="submit" alt="PayPal - The safer, easier way to pay online!">
									<img alt="" border="0" src="https://www.paypalobjects.com/en_US/i/scr/pixel.gif" width="1" height="1">
								</form>
							</td>
							<td style="vertical-align:top;padding:8px 25px;">
								<ul>
									<li>
										<img src="<?php echo plugins_url( 'images/adp-minilogo.png', __FILE__ ); ?>" id="" /> 
										<a href="http://wordpress.org/extend/plugins/artistdatapress/">Plugin Page</a>
									</li>
									<li>
										<img src="<?php echo plugins_url( 'images/adp-minilogo.png', __FILE__ ); ?>" id="" /> 
										<a href="http://wordpress.org/support/plugin/artistdatapress/">Plugin Support Forum</a>
									</li>
									<li>
										<img src="<?php echo plugins_url( 'images/adp-minilogo.png', __FILE__ ); ?>" id="" /> 
										<a href="http://wordpress.org/extend/plugins/artistdatapress/">Rate ADP five stars!</a>
									</li>
								</ul>
							</td>
							<td style="vertical-align:top;padding:8px 25px;">
								<ul>
									<li>
										<img src="<?php echo plugins_url( 'images/twitter-icon.png', __FILE__ ); ?>" id="" /> 
										<a href="http://twitter.com/christopherjoel">Follow Slushman on Twitter</a>
									</li>
									<li>
										<img src="<?php echo plugins_url( 'images/facebook-icon.png', __FILE__ ); ?>" id="" /> 
										<a href="https://www.facebook.com/pages/Slushman-Design/124635590938414">Like Slushman on Facebook</a>
									</li>
									<li>
										<img src="<?php echo plugins_url( 'images/rss.png', __FILE__ ); ?>" id="" /> 
										<a href="http://feeds.feedburner.com/SlushmanDesign">Subscribe to Slushman.com</a>
									</li>
									<li>
										<img src="<?php echo plugins_url( 'images/email_sub.png', __FILE__ ); ?>" id="" /> 
										<a href="http://feedburner.google.com/fb/a/mailverify?uri=SlushmanDesign&amp;loc=en_US">Subscribe via Email</a>
									</li>
								</ul>
							</td>
							<td style="vertical-align:top;padding:8px 25px;">
								<ul>
									<li>
										<img src="<?php echo plugins_url( 'images/cjlogo.png', __FILE__ ); ?>" id="" /> 
										<a href="http://christopherjoel.com">Check out my music</a>
									</li>
									<li>
										<img src="<?php echo plugins_url( 'images/tvdlogo.png', __FILE__ ); ?>" id="" /> 
										<a href="http://thevibedials.com">Check out my band</a>
									</li>
								</ul>
							</td>
						</tr>
					</tbody>
				</table><?php
			
			} // End of support_preference_field
				
		function validate_options( $input ) {
		
			$input['xml_url'] 			= esc_url_raw( $input['xml_url'] );
			$input['adpage_url'] 		= esc_url( $input['adpage_url'] );
			$input['max_shows'] 		= intval( $input['max_shows'] );
			$input['adp_time_format']	= stripslashes( $input['adp_time_format'] );
			$input['adp_date_format']	= stripslashes( $input['adp_date_format'] );
			
			return $input;
		
		} // End of validate_options()
		
		function add_styles() {
			
			wp_register_style( 'slushman-adp',  plugins_url( 'css/artistdatapress.css', __FILE__ ) );
			wp_register_style( 'slushman-adp-layout-classic',  plugins_url( 'css/classic.css', __FILE__ ) );
			wp_register_style( 'slushman-adp-layout-ical',  plugins_url( 'css/ical.css', __FILE__ ) );
			wp_enqueue_style( 'slushman-adp' );
			
		}
		
		function admin_enqueue( $hook ) {
	 		
		    wp_enqueue_style( 'slushman-adp-layout-classic', plugins_url( 'css/classic.css', __FILE__ ) );
		    wp_enqueue_style( 'slushman-adp-layout-ical', plugins_url( 'css/ical.css', __FILE__ ) );
	 		
 		} // End of admin_enqueue
 		
 		
		
/**
 * Processes and outputs the raw ArtistData XML feed
 *
 * get_xml() gets the value of the xml_url plugin option,
 * then fetches the ArtistData XML file at that URL. It then parses
 * the XML into an array, which can be displayed easily.
 * 
 * Here's wheere the cURL code came from:
 * http://www.bobulous.org.uk/coding/php-5-xml-feeds.html
 *
 * @since 0.3
 *
 * @uses cURL
 * @uses SimpleXmlElement
 *
 * @return array Data from the ArtistData XML
 */
		function get_xml() {
		
			$options = get_option( 'slushman_adp_general_settings' );
			$feedurl = $options['xml_url'];
			
			if ( !empty( $feedurl ) ) {
			
				$xml_url = curl_init( $feedurl );
				
				curl_setopt( $xml_url, CURLOPT_RETURNTRANSFER, true );
				curl_setopt( $xml_url, CURLOPT_CONNECTTIMEOUT, 4 );
				curl_setopt( $xml_url, CURLOPT_AUTOREFERER, TRUE );
				curl_setopt( $xml_url, CURLOPT_MAXREDIRS, 10 );
				curl_setopt( $xml_url, CURLOPT_FOLLOWLOCATION, TRUE );
				$xml = curl_exec( $xml_url );

				curl_close( $xml_url );
				
				libxml_use_internal_errors( true );
			    
			    try {
			    
			        $data = new SimpleXMLElement( $xml );
			    
			    } catch ( Exception $e ) {
			    
			        $error_message = 'SimpleXMLElement threw an exception.';
			    
			        foreach( libxml_get_errors() as $error_line ) {
			    
			            $error_message .= "\t" . $error_line->message;
			            
			            return $error_message;
			    
			        } // End of libxml_get_errors foreach
			    
			        trigger_error( $error_message );
			        
			        $error = array( 'Error', 'There seems to be a problem with your feed URL.' );
					return $error;
			    
			    } // End of try / catch
			    
			    if ( $data != FALSE ) {
				
					$key = $data->show[0]->recordKey;
				
					if ( !empty( $key ) ) {
				
						return $data;
					
					} else {

						return FALSE;
					
					} // End of $key empty check
			
				} // End of $data check
				
			} else {
			
				$error = array( 'Error', 'Please enter a feed in the options page.' );
				return $error;
			
			} // End of xml_url empty check

		} // End of get_xml()
		
/**
 * Display errors and notices
 *
 * 
 *
 * @since 0.2
 *
 * @param array $args Array of data
 *
 * @return mixed HTML formatted error message
 */
 		function display_errors_and_notices( $args ) {
 		
 			$notices['check_field']		= sprintf( __( '<div id="message" class="error"><p>The %s field is either invalid or empty.</p></div>' ), $args['field'] );
 			$notices['already_used']	= sprintf( __( '<div id="message" class="error"><p>This %s is already used by another user.</p></div>' ), $args['used'] );
 			$notices['not_set']			= sprintf( __( '<div id="message" class="error"><p>The %s is not set.</p></div>' ), $args['unset'] );
 			$notices['fail']			= sprintf( __( '<div id="message" class="error"><p>Could not %s the %s.</p></div>' ), $args['failure'], $args['failed'] );
 			$notices['success']			= sprintf( __( '<div id="message" class="updated"><p>%s %s successfully.</p></div>' ), $args['succeeded'], $args['successful'] );
 			$notices['attended']		= sprintf( __( '<div id="message" class="error"><p>%s has already received credit for this seminar.</p></div>' ), $args['student_name'] );
 			$notices['enrolled']		= sprintf( __( '<div id="message" class="updated"><p>%s has been marked as enrolled.</p></div>' ), $args['student_name'] );
 			$notices['unregistered']	= __( '<div id="message" class="error"><p>This student is not currently registered for the seminar course.</p></div>' );
 			$notices['errors']			= sprintf( __( '<div id="message" class="error"><p>%s</p></div>' ), $args['error'] );
 			$notices['attendance']		= sprintf( __( '<div id="message" class="updated"><p>Attendance at %s for %s was added successfully.</p></div>' ), $args['event'], $args['student'] );
 			$notices['partial']			= sprintf( __( '<div id="message" class="error"><p>%s updated, but %s did not.</p></div>' ), $args['updated'], $args['same'] );
 		
 			$notice = $notices[$args['which']];
 			return $notice;
 		
 		} // End of display_errors_and_notices()
 		
// Create shortcode [artistdatapress]
		function shortcode( $atts ) {
		
			ob_start();
			
			$options 	= get_option( 'slushman_adp_layout_settings' );
			$layout_opt = $options['adp_layout'];
			$layout 	= new Layout;
			
			$layout->get_layout( array( 'layout' => $layout_opt ) );
			
			$output = ob_get_contents();
			
			ob_end_clean();
			
			return $output;
		
		} // End of shortcode()
		
		
/**
 * Include other files
 *
 * Includes all files containing functions outside the class.
 *
 * @since 0.37
 */
		function file_includer() {
	
			require( 'inc/layout.php' );
			include( 'inc/slushman_toolkit.php' );
	
		} // End of file_includer()		

	} // End of ArtistDataPress_Plugin

} // End of class check

require_once( dirname( __FILE__ ) . '/inc/adp_widget.php' );

new ArtistDataPress_Plugin;

?>