feat: Initial release v0.1.0

WP FediStream - Stream music over ActivityPub

Features:
- Custom post types: Artist, Album, Track, Playlist
- Custom taxonomies: Genre, Mood, License
- User roles: Artist, Label
- Admin dashboard with statistics
- Frontend templates and shortcodes
- Audio player with queue management
- ActivityPub integration with actor support
- WooCommerce product types for albums/tracks
- User library with favorites and history
- Notification system (in-app and email)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

includes/Frontend/Widgets/NowPlayingWidget.php

@@ -0,0 +1,111 @@
+<?php
+/**
+ * Now Playing Widget.
+ *
+ * @package WP_FediStream
+ */
+
+namespace WP_FediStream\Frontend\Widgets;
+
+use WP_FediStream\Plugin;
+
+// Prevent direct file access.
+if ( ! defined( 'ABSPATH' ) ) {
+    exit;
+}
+
+/**
+ * Displays the currently playing track (updates via JavaScript).
+ */
+class NowPlayingWidget extends \WP_Widget {
+
+    /**
+     * Constructor.
+     */
+    public function __construct() {
+        parent::__construct(
+            'fedistream_now_playing',
+            __( 'FediStream: Now Playing', 'wp-fedistream' ),
+            array(
+                'description' => __( 'Display the currently playing track.', 'wp-fedistream' ),
+                'classname'   => 'fedistream-widget fedistream-widget--now-playing',
+            )
+        );
+    }
+
+    /**
+     * Front-end display.
+     *
+     * @param array $args     Widget arguments.
+     * @param array $instance Saved values from database.
+     * @return void
+     */
+    public function widget( $args, $instance ): void {
+        $title       = ! empty( $instance['title'] ) ? $instance['title'] : __( 'Now Playing', 'wp-fedistream' );
+        $title       = apply_filters( 'widget_title', $title, $instance, $this->id_base );
+        $show_player = ! empty( $instance['show_player'] );
+
+        echo $args['before_widget']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+
+        if ( $title ) {
+            echo $args['before_title'] . esc_html( $title ) . $args['after_title']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+        }
+
+        try {
+            $plugin = Plugin::get_instance();
+            // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+            echo $plugin->render(
+                'widgets/now-playing',
+                array(
+                    'show_player' => $show_player,
+                )
+            );
+        } catch ( \Exception $e ) {
+            if ( WP_DEBUG ) {
+                echo '<p class="fedistream-error">' . esc_html( $e->getMessage() ) . '</p>';
+            }
+        }
+
+        echo $args['after_widget']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+    }
+
+    /**
+     * Back-end widget form.
+     *
+     * @param array $instance Previously saved values from database.
+     * @return void
+     */
+    public function form( $instance ): void {
+        $title       = ! empty( $instance['title'] ) ? $instance['title'] : __( 'Now Playing', 'wp-fedistream' );
+        $show_player = ! empty( $instance['show_player'] );
+        ?>
+        <p>
+            <label for="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>"><?php esc_html_e( 'Title:', 'wp-fedistream' ); ?></label>
+            <input class="widefat" id="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>" name="<?php echo esc_attr( $this->get_field_name( 'title' ) ); ?>" type="text" value="<?php echo esc_attr( $title ); ?>">
+        </p>
+        <p>
+            <label>
+                <input type="checkbox" id="<?php echo esc_attr( $this->get_field_id( 'show_player' ) ); ?>" name="<?php echo esc_attr( $this->get_field_name( 'show_player' ) ); ?>" value="1" <?php checked( $show_player ); ?>>
+                <?php esc_html_e( 'Show player controls', 'wp-fedistream' ); ?>
+            </label>
+        </p>
+        <p class="description">
+            <?php esc_html_e( 'This widget shows information about the currently playing track and updates automatically via JavaScript.', 'wp-fedistream' ); ?>
+        </p>
+        <?php
+    }
+
+    /**
+     * Sanitize widget form values as they are saved.
+     *
+     * @param array $new_instance Values just sent to be saved.
+     * @param array $old_instance Previously saved values from database.
+     * @return array Updated safe values to be saved.
+     */
+    public function update( $new_instance, $old_instance ): array {
+        $instance                = array();
+        $instance['title']       = ! empty( $new_instance['title'] ) ? sanitize_text_field( $new_instance['title'] ) : '';
+        $instance['show_player'] = ! empty( $new_instance['show_player'] );
+        return $instance;
+    }
+}