podlove / podlove-subscribe-button-wp-plugin

settings/buttons.php

<?php

namespace PodloveSubscribeButton\Settings;

class Buttons {

	public static function page() {

		$action = null !== filter_input(INPUT_GET, 'action') ? filter_input(INPUT_GET, 'action') : null;
		$is_network = is_network_admin();

		if ( $action == 'confirm_delete' && null !== filter_input(INPUT_GET, 'button') ) {
			$button = ( $is_network === true ? \PodloveSubscribeButton\Model\NetworkButton::find_by_id( (int) filter_input(INPUT_GET, 'button') ) : \PodloveSubscribeButton\Model\Button::find_by_id( (int) filter_input(INPUT_GET, 'button') ) );
			?>
			<div class="updated">
				<p>
					<strong>
						<?php printf( __( 'You selected to delete the button "%s". Please confirm this action.', 'podlove-subscribe-button' ), sanitize_title($button->title) ) ?>
					</strong>
				</p>
				<p>
					<?php echo self::get_action_link( $button, __( 'Delete button permanently', 'podlove-subscribe-button' ), 'delete', 'button' ) ?>
					<?php echo self::get_action_link( $button, __( "Don't change anything", 'podlove-subscribe-button' ), 'keep', 'button-primary' ) ?>
				</p>
			</div>
			<?php
		}
		?>
		<div class="wrap">
			<h2><?php echo __( 'Podlove Subscribe Button', 'podlove-subscribe-button' ); ?> <a href="?page=<?php echo filter_input(INPUT_GET, 'page'); ?>&amp;action=new&amp;network=<?php echo $is_network; ?>" class="add-new-h2"><?php _e( 'Add New', 'podlove-subscribe-button' ); ?></a></h2>
			<?php

			switch ( $action ) {
				case 'new':   self::new_template();  break;
				case 'edit':  self::edit_template(); break;
				case 'index': self::view_template(); break;
				default:      self::view_template(); break;
			}
			?>
		</div>
		<?php
	}

	/**
	 * Process form: save/update a format
	 */
	public static function save() {
		if ( null == filter_input(INPUT_GET, 'button') )

It is generally a best practice to always use braces with control structures.

			return;

        if (!wp_verify_nonce($_REQUEST['_psb_nonce'])) {
            return;
        }

		$post = filter_input_array(INPUT_POST);

		$button = ( filter_input(INPUT_GET, 'network') === '1' ? \PodloveSubscribeButton\Model\NetworkButton::find_by_id( filter_input(INPUT_GET, 'button') ) : \PodloveSubscribeButton\Model\Button::find_by_id( filter_input(INPUT_GET, 'button') ) );
		$button->update_attributes( $post['podlove_button'] );

		if ( isset($post['submit_and_stay']) ) {
			self::redirect( 'edit', $button->id, array( 'network' => filter_input(INPUT_GET, 'network') ), ( filter_input(INPUT_GET, 'network') === '1' ? true : false ) );
		} else {
			self::redirect( 'index', $button->id, array(), ( filter_input(INPUT_GET, 'network') === '1' ? true : false ) );
		}
	}
	/**
	 * Process form: create a format
	 */
	public static function create() {
		global $wpdb;

		$post = filter_input_array(INPUT_POST);

		$button = ( filter_input(INPUT_GET, 'network') === '1' ? new \PodloveSubscribeButton\Model\NetworkButton : new \PodloveSubscribeButton\Model\Button );
		$button->update_attributes( $post['podlove_button'] );

		if ( isset($post['submit_and_stay']) ) {
			self::redirect( 'edit', $button->id, array( 'network' => filter_input(INPUT_GET, 'network') ), ( filter_input(INPUT_GET, 'network') === '1' ? true : false ) );
		} else {
			self::redirect( 'index', $button->id, array(), ( filter_input(INPUT_GET, 'network') === '1' ? true : false ) );
		}
	}

	/**
	 * Process form: delete a format
	 */
	public static function delete() {
		if ( null ==  filter_input(INPUT_GET, 'button') )

It is generally a best practice to always use braces with control structures.

			return;

		$button = ( filter_input(INPUT_GET, 'network') === '1' ? \PodloveSubscribeButton\Model\NetworkButton::find_by_id( filter_input(INPUT_GET, 'button') ) : \PodloveSubscribeButton\Model\Button::find_by_id( filter_input(INPUT_GET, 'button') ) );
		$button->delete();

		self::redirect( 'index', null, array(), ( filter_input(INPUT_GET, 'network') === '1' ? true : false ) );
	}

	/**
	 * Helper method: redirect to a certain page.
	 */
	public static function redirect( $action, $button_id = null, $params = array(), $network = false ) {
		$page    = ( $network ? '/network/settings' : 'options-general' ) . '.php?page=' . filter_input(INPUT_GET, 'page');
		$show    = ( $button_id ) ? '&button=' . $button_id : '';
		$action  = '&action=' . $action;

		array_walk( $params, function(&$value, $key) { $value = "&$key=$value"; } );

		wp_redirect( admin_url( $page . $show . $action . implode( '', $params ) ) );
	}

	public static function process_form() {
		if ( null === filter_input(INPUT_GET, 'button') )

It is generally a best practice to always use braces with control structures.

			return;

        $action = ( null !== filter_input(INPUT_GET, 'action') ? filter_input(INPUT_GET, 'action') : null );

        if (!in_array($action, ['save', 'create', 'delete'])) {
            return;
        }

        if (!wp_verify_nonce($_REQUEST['_psb_nonce'])) {
            return;
        }            

		if ( $action === 'save' ) {
			self::save();
		} elseif ( $action === 'create' ) {
			self::create();
		} elseif ( $action === 'delete' ) {
			self::delete();
		}
	}

	public static function new_template() {
		if ( filter_input(INPUT_GET, 'network') == '1' ) {
			$button = new \PodloveSubscribeButton\Model\NetworkButton;
		} else {
			$button = new \PodloveSubscribeButton\Model\Button;
		}

		echo '<h3>' . __( 'New Subscribe button', 'podlove-subscribe-button' ) . '</h3>'.
				__( 'Please fill in your Podcast metadata to create a Podlove Subscription button', 'podlove-subscribe-button' );
		self::form_template( $button, 'create' );
	}

	public static function edit_template() {
		if ( filter_input(INPUT_GET, 'network') == '1' ) {
			$button = \PodloveSubscribeButton\Model\NetworkButton::find_by_id( filter_input(INPUT_GET, 'button') );
		} else {
			$button = \PodloveSubscribeButton\Model\Button::find_by_id( filter_input(INPUT_GET, 'button') );
		}

		echo '<h3>' . sprintf( __( 'Edit Subscribe button: %s', 'podlove-subscribe-button' ), sanitize_text_field($button->title) ) . '</h3>';
		self::form_template( $button, 'save' );
	}

	public static function view_template() {
		$is_network = is_network_admin();
		?>
		<p><?php _e('This plugin allows easy inclusion of the Podlove Subscribe Button. Put it in your sidebar with a simple widget or include the button in pages and/or posts with a simple shortcode.', 'podlove-subscribe-button' ); ?></p>
		<p><?php _e('Start by adding a button for each of your podcasts here. You can then add the button to your sidebar by adding the <a href="widgets.php">Podlove Subscribe Button widget</a>.', 'podlove-subscribe-button' ); ?></p>
		<p><?php _e('If you want to display the button inside a page or article, you can also use the <code>[podlove-subscribe-button]</code> shortcode anywhere.', 'podlove-subscribe-button' ); ?></p>
		<?php
		$table = new \PodloveSubscribeButton\Button_List_Table;
		$table->prepare_items();
		$table->display();

		// Get the global button settings (with fallback to default values)
		$settings = \PodloveSubscribeButton\Model\Button::get_global_setting_with_fallback();

		if ( ! $is_network ) :
		?>
		<h3><?php _e('Default Settings', 'podlove-subscribe-button' ); ?></h3>
		<form method="post" action="options.php">
			<?php settings_fields( 'podlove-subscribe-button' ); ?>
			<?php do_settings_sections( 'podlove-subscribe-button' ); ?>
			<table class="form-table">
				<tr valign="top">
				<th scope="row"><label for="podlove_subscribe_button_default_size"><?php _e('Size', 'podlove-subscribe-button' ); ?></label></th>
				<td>
					<select name="podlove_subscribe_button_default_size" id="podlove_subscribe_button_default_size">
						<?php foreach (\PodloveSubscribeButton\Model\Button::$size as $value => $description) : ?>
							<option value="<?php echo $value; ?>" <?php echo ( $settings['size'] == $value ? "selected" : '' ); ?>><?php echo $description; ?></option>
						<?php endforeach; ?>
					</select>
				</td>
				</tr>
				<tr valign="top">
				<th scope="row"><label for="podlove_subscribe_button_default_autowidth"><?php _e('Autowidth', 'podlove-subscribe-button' ); ?></label></th>
				<td>
					<input type="checkbox" name="podlove_subscribe_button_default_autowidth" id="podlove_subscribe_button_default_autowidth" <?php echo ( $settings['autowidth'] == 'on' ? 'checked' : '' ) ?> />
				</td>
				</tr>
				<tr valign="top">
				<th scope="row"><label for="podlove_subscribe_button_default_color"><?php _e('Color', 'podlove-subscribe-button' ); ?></label></th>
				<td>
					<input id="podlove_subscribe_button_default_color" name="podlove_subscribe_button_default_color" class="podlove_subscribe_button_color" value="<?php echo $settings['color'] ?>" />
				</td>
				</tr>
				<tr valign="top">
				<th scope="row"><label for="podlove_subscribe_button_default_style"><?php _e('Style', 'podlove-subscribe-button' ); ?></label></th>
				<td>
					<select name="podlove_subscribe_button_default_style" id="podlove_subscribe_button_default_style">
						<?php foreach (\PodloveSubscribeButton\Model\Button::$style as $value => $description) : ?>
							<option value="<?php echo $value; ?>" <?php echo ( $settings['style'] == $value ? "selected" : '' ); ?>><?php echo $description; ?></option>
						<?php endforeach; ?>
					</select>
				</td>
				</tr>
				<tr valign="top">
				<th scope="row"><label for="podlove_subscribe_button_default_format"><?php _e('Format', 'podlove-subscribe-button' ); ?></label></th>
				<td>
					<select name="podlove_subscribe_button_default_format" id="podlove_subscribe_button_default_format">
						<?php foreach (\PodloveSubscribeButton\Model\Button::$format as $value => $description) : ?>
							<option value="<?php echo $value; ?>" <?php echo ( $settings['format'] == $value ? "selected" : '' ); ?>><?php echo $description; ?></option>
						<?php endforeach; ?>
					</select>
				</td>
				</tr>
			</table>
			<?php submit_button(); ?>
		</form>
		<?php
		endif;
	}

	private static function form_template( $button, $action ) {
		// Enqueue Scripts for Media Manager
		wp_enqueue_media();
		// Adjust if is_network
		$is_network = is_network_admin();
		?>
		<form method="post" action="<?php echo ( $is_network === true ? '/wp-admin/network/settings' : 'options-general' ) ?>.php?page=podlove-subscribe-button&button=<?php echo $button->id; ?>&action=<?php echo $action; ?>&network=<?php echo $is_network; ?>">
            <?php wp_nonce_field(-1, '_psb_nonce'); ?>
			<input type="hidden" value="<?php echo $button->id; ?>" name="podlove_button[id]" />
			<table class="form-table" border="0" cellspacing="0">
					<tbody>
					<tr>
						<td scope="row">
							<label for="podlove_button_name"><?php _e('Button ID', 'podlove-subscribe-button' ); ?></label>
						</td>
						<td>
							<input type="text" class="regular-text" id="podlove_button_name" name="podlove_button[name]" value="<?php echo esc_attr($button->name); ?>" />
							<br /><span class="description"><?php _e('The ID will be used as in internal identifier for shortcodes.', 'podlove-subscribe-button' ); ?></span>
						</td>
					</tr>
					<tr>
						<td scope="row">
							<label for="podlove_button_title"><?php _e('Podcast Title', 'podlove-subscribe-button' ); ?></label>
						</td>
						<td>
							<input type="text" class="regular-text" id="podlove_button_title" name="podlove_button[title]" value="<?php echo esc_attr($button->title); ?>" />
						</td>
					</tr>
					<tr>
						<td scope="row">
							<label for="podlove_button_subtitle"><?php _e('Podcast Subtitle', 'podlove-subscribe-button' ); ?></label>
						</td>
						<td>
							<input type="text" class="regular-text" id="podlove_button_subtitle" name="podlove_button[subtitle]" value="<?php echo esc_attr($button->subtitle); ?>" />
						</td>
					</tr>
					<tr>
						<td scope="row">
							<label for="podlove_button_description"><?php _e('Podcast Description', 'podlove-subscribe-button' ); ?></label>
						</td>
						<td>
							<textarea class="autogrow" cols="40" rows="3" id="podlove_button_description" name="podlove_button[description]"><?php echo esc_attr($button->description); ?></textarea>
						</td>
					</tr>
					<tr>
						<td scope="row">
							<label for="podlove-button-cover"><?php _e('Podcast Image URL', 'podlove-subscribe-button' ); ?></label>
						</td>
						<td>
							<input type="text" class="regular-text" id="podlove-button-cover" name="podlove_button[cover]" value="<?php echo esc_attr($button->cover); ?>" />
							<a id="Podlove_cover_image_select" class="button" href="#">Select</a>
							<br /><img src="<?php echo sanitize_text_field($button->cover); ?>" alt="" style="width: 200px" />
							<script type="text/javascript">
								(function($) {
									$("#podlove-button-cover").on( 'change', function() {
										url = $(this).val();
										$(this).parent().find("img").attr("src", url);
									} );
								})(jQuery);
							</script>
						</td>
					</tr>
					<tr>
						<td scope="row">
							<label for="feeds_table"><?php _e('Podcast Feeds', 'podlove-subscribe-button' ); ?></label>
						</td>
						<td>
							<table id="feeds_table" class="podlove_alternating" border="0" cellspacing="0">
								<thead>
									<tr>
										<th><?php _e('URL', 'podlove-subscribe-button' ); ?></th>
										<th><?php _e('iTunes feed ID', 'podlove-subscribe-button' ); ?></th>
										<th><?php _e('Media format', 'podlove-subscribe-button' ); ?></th>
										<th><?php _e('Actions', 'podlove-subscribe-button' ); ?></th>
									</tr>
								</thead>
								<tbody id="feeds_table_body">
								</tbody>
							</table>
							<input type="button" class="button add_feed" value="+" />
							<p><span class="description"><?php _e('Provide all Feeds with their corresponding Media File Type. The Subscribe Button will then automatically provide the most suitable feed to the subscriber with respect to their Podcast Client.', 'podlove-subscribe-button' ); ?></span></p>
						</td>
					</tr>
					</tbody>
				</table>
				<input name="submit" id="submit" class="button button-primary" value="<?php _e('Save Changes', 'podlove-subscribe-button' ); ?>" type="submit" />
				<input type="submit" name="submit_and_stay" id="submit_and_stay" class="button" value="<?php _e('Save Changes and Continue Editing', 'podlove-subscribe-button' ); ?>"  />

				<script type="text/template" id="feed_line_template">
					<tr>
						<td>
							<input type="text" class="regular-text" name="podlove_button[feeds][{{id}}][url]" value="{{url}}" />
						</td>
						<td>
						<input type="text" class="regular-text" name="podlove_button[feeds][{{id}}][itunesfeedid]" value="{{itunesfeedid}}" />
						</td>
						<td>
							<select class="regular-text podlove-media-format" name="podlove_button[feeds][{{id}}][format]">
								<?php
									foreach (\PodloveSubscribeButton\MediaTypes::$audio as $id => $audio) {
										echo "<option value='".$id."'>".$audio['title']."</option>\n";
									}
								?>
							</select>
						</td>
						<td><i class="clickable podlove-icon-remove"></i></td>
					</tr>
				</script>
				<script type="text/javascript">
					var feeds = <?php echo json_encode($button->feeds); ?>;
				</script>
		</form>
		<?php
	}

	public static function get_action_link( $button, $title, $action = 'edit', $type = 'link' ) {
		return sprintf(
			'<a href="?page=%s&action=%s&button=%s&network='.is_network_admin().'&_psb_nonce=%s"%s>' . $title . '</a>',
			filter_input(INPUT_GET, 'page'),
			$action,
			$button->id,
            wp_create_nonce(),
			$type == 'button' ? ' class="button"' : ''
		);
	}

}