750 lines
25 KiB
Rust
750 lines
25 KiB
Rust
//! Full interactive control point CLI demo.
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//!
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//! This example demonstrates all capabilities of the ControlPoint:
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//! - Interactive device selection (renderer + media server)
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//! - ContentDirectory navigation with back/forward support
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//! - Queue construction and playlist binding
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//! - Full playback control (play/pause/stop/next/volume/mute)
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//! - Real-time event monitoring (renderer and media server events)
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//! - Live playlist observation and auto-refresh
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use std::io::{self, BufRead, Write};
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use std::process;
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use std::sync::Arc;
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use std::thread;
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use std::time::Duration;
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use anyhow::{anyhow, Context, Result};
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use pmocontrol::{
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ControlPoint, DeviceRegistryRead, MediaBrowser, MediaEntry, MediaResource, MediaServerEvent,
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MediaServerInfo, MusicServer, PlaybackItem, PlaybackPosition, PlaybackStatus, RendererEvent,
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RendererInfo, TransportControl, VolumeControl,
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};
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const DEFAULT_TIMEOUT_SECS: u64 = 5;
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const DEFAULT_DISCOVERY_SECS: u64 = 15;
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fn main() -> Result<()> {
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let _ = tracing_subscriber::fmt::try_init();
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println!("=== Full Control Point Interactive Demo ===");
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println!("Starting control point with timeout={}s", DEFAULT_TIMEOUT_SECS);
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let control_point = ControlPoint::spawn(DEFAULT_TIMEOUT_SECS)
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.context("Failed to start control point")?;
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println!("Discovery running for {} seconds...", DEFAULT_DISCOVERY_SECS);
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thread::sleep(Duration::from_secs(DEFAULT_DISCOVERY_SECS));
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// Step 1: List and select renderer
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let registry = control_point.registry();
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let renderer_info = {
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let reg = registry.read().expect("registry poisoned");
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let renderers = reg.list_renderers();
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println!("\n=== Available Media Renderers ===");
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if renderers.is_empty() {
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eprintln!("No renderers discovered. Exiting.");
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process::exit(1);
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}
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print_renderers(&renderers);
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select_renderer(&renderers)?
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};
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println!("\n✓ Selected renderer: {} (id={})",
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renderer_info.friendly_name, renderer_info.id.0);
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// Step 2: List and select media server
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let server_info = {
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let reg = registry.read().expect("registry poisoned");
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let servers: Vec<MediaServerInfo> = reg.list_servers()
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.into_iter()
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.filter(|s| s.has_content_directory && s.content_directory_control_url.is_some())
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.collect();
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println!("\n=== Available Media Servers ===");
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if servers.is_empty() {
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eprintln!("No media servers with ContentDirectory discovered. Exiting.");
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process::exit(1);
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}
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print_servers(&servers);
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select_server(&servers)?
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};
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println!("\n✓ Selected server: {} (id={})",
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server_info.friendly_name, server_info.id.0);
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let timeout = Duration::from_secs(DEFAULT_TIMEOUT_SECS);
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let server = MusicServer::from_info(&server_info, timeout)
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.context("Failed to initialize MusicServer")?;
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// Step 3: Navigate ContentDirectory and select a container for queue
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println!("\n=== ContentDirectory Navigation ===");
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println!("Commands: [number]=enter container, 'b'=back, 's'=select current as queue source, 'q'=quit navigation");
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let (selected_items, selected_container_id) = navigate_and_select(&server)?;
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if selected_items.is_empty() {
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println!("No playable items selected. Exiting.");
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process::exit(1);
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}
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println!("\n✓ Selected {} items for playback queue", selected_items.len());
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// Step 4: Build queue
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let renderer_id = renderer_info.id.clone();
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println!("\n=== Building Playback Queue ===");
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control_point.clear_queue(&renderer_id)
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.context("Failed to clear queue")?;
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control_point.enqueue_items(&renderer_id, selected_items)
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.context("Failed to enqueue items")?;
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println!("✓ Queue built with {} items",
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control_point.get_queue_snapshot(&renderer_id)?.len());
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// Step 5: Ask about playlist binding
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if let Some(container_id) = selected_container_id {
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println!("\nAttach this queue to playlist container '{}' for auto-refresh? (y/n)", container_id);
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if read_yes_no()? {
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control_point.attach_queue_to_playlist(
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&renderer_id,
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server_info.id.clone(),
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container_id.clone(),
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);
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println!("✓ Queue attached to playlist container '{}'", container_id);
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} else {
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println!("Queue will not be bound to playlist (no auto-refresh)");
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}
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}
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// Step 6: Start playback
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println!("\n=== Starting Playback ===");
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control_point.play_next_from_queue(&renderer_id)
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.context("Failed to start playback")?;
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println!("✓ Playback started");
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// Step 7: Spawn event monitoring threads
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let control_point_arc = Arc::new(control_point);
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spawn_renderer_event_thread(Arc::clone(&control_point_arc), renderer_id.clone());
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spawn_media_server_event_thread(Arc::clone(&control_point_arc), renderer_id.clone());
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// Step 8: Interactive control loop
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println!("\n=== Interactive Control ===");
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print_help();
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run_control_loop(Arc::clone(&control_point_arc), renderer_id)?;
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println!("\nExiting. Goodbye!");
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Ok(())
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}
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/// Print list of renderers with index.
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fn print_renderers(renderers: &[RendererInfo]) {
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for (idx, info) in renderers.iter().enumerate() {
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println!(" [{}] {} | model={} | protocol={:?} | online={} | id={}",
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idx, info.friendly_name, info.model_name, info.protocol, info.online, info.id.0);
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}
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}
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/// Print list of servers with index.
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fn print_servers(servers: &[MediaServerInfo]) {
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for (idx, info) in servers.iter().enumerate() {
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println!(" [{}] {} | model={} | manufacturer={} | online={} | id={}",
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idx, info.friendly_name, info.model_name, info.manufacturer, info.online, info.id.0);
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}
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}
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/// Interactive renderer selection.
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fn select_renderer(renderers: &[RendererInfo]) -> Result<RendererInfo> {
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loop {
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print!("\nSelect renderer (index 0-{}): ", renderers.len() - 1);
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io::stdout().flush()?;
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let mut input = String::new();
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io::stdin().read_line(&mut input)?;
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match input.trim().parse::<usize>() {
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Ok(idx) if idx < renderers.len() => {
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return Ok(renderers[idx].clone());
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}
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_ => {
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println!("Invalid selection. Please enter a number between 0 and {}", renderers.len() - 1);
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}
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}
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}
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}
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/// Interactive server selection.
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fn select_server(servers: &[MediaServerInfo]) -> Result<MediaServerInfo> {
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loop {
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print!("\nSelect media server (index 0-{}): ", servers.len() - 1);
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io::stdout().flush()?;
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let mut input = String::new();
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io::stdin().read_line(&mut input)?;
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match input.trim().parse::<usize>() {
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Ok(idx) if idx < servers.len() => {
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return Ok(servers[idx].clone());
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}
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_ => {
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println!("Invalid selection. Please enter a number between 0 and {}", servers.len() - 1);
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}
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}
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}
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}
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/// Navigation state for ContentDirectory browsing.
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struct NavigationState {
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/// Stack of (container_id, container_title) for back navigation.
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path_stack: Vec<(String, String)>,
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/// Current container ID being browsed.
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current_container_id: String,
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/// Current container title.
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current_container_title: String,
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}
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impl NavigationState {
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fn new(root_id: String, root_title: String) -> Self {
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Self {
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path_stack: Vec::new(),
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current_container_id: root_id,
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current_container_title: root_title,
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}
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}
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fn enter_container(&mut self, container_id: String, container_title: String) {
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self.path_stack.push((
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self.current_container_id.clone(),
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self.current_container_title.clone(),
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));
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self.current_container_id = container_id;
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self.current_container_title = container_title;
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}
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fn go_back(&mut self) -> bool {
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if let Some((parent_id, parent_title)) = self.path_stack.pop() {
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self.current_container_id = parent_id;
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self.current_container_title = parent_title;
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true
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} else {
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false
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}
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}
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}
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/// Navigate ContentDirectory and let user select a container for queue.
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fn navigate_and_select(server: &MusicServer) -> Result<(Vec<PlaybackItem>, Option<String>)> {
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let root_entries = server.browse_root()
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.context("Failed to browse root")?;
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let mut nav_state = NavigationState::new("0".to_string(), "Root".to_string());
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loop {
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println!("\n--- Browsing: {} (id: {}) ---",
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nav_state.current_container_title, nav_state.current_container_id);
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let entries = if nav_state.current_container_id == "0" {
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root_entries.clone()
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} else {
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server.browse_children(&nav_state.current_container_id, 0, 100)
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.context("Failed to browse container")?
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};
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if entries.is_empty() {
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println!("(empty container)");
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} else {
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print_entries(&entries);
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}
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print!("\nCommand [0-{} to enter container / b=back / s=select / q=quit]: ",
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entries.len().saturating_sub(1));
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io::stdout().flush()?;
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let mut input = String::new();
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io::stdin().read_line(&mut input)?;
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let input = input.trim();
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match input {
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"q" => {
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println!("Navigation cancelled.");
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return Ok((Vec::new(), None));
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}
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"b" => {
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if !nav_state.go_back() {
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println!("Already at root.");
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}
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}
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"s" => {
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// Select current container
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println!("Collecting items from '{}'...", nav_state.current_container_title);
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let items = collect_playable_items(server, &entries)?;
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if items.is_empty() {
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println!("No playable items found in this container.");
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continue;
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}
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return Ok((items, Some(nav_state.current_container_id.clone())));
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}
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_ => {
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// Try to parse as index
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match input.parse::<usize>() {
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Ok(idx) if idx < entries.len() => {
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let entry = &entries[idx];
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if entry.is_container {
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nav_state.enter_container(entry.id.clone(), entry.title.clone());
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} else {
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println!("Entry {} is an audio item, not a container. Use 's' to select the current container for playback.", idx);
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}
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}
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_ => {
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println!("Invalid command. Enter a number (0-{}), 'b' to go back, 's' to select, or 'q' to quit.",
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entries.len().saturating_sub(1));
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}
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}
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}
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}
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}
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}
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/// Print MediaEntry list.
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fn print_entries(entries: &[MediaEntry]) {
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for (idx, entry) in entries.iter().enumerate() {
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if entry.is_container {
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println!(" [{}] \u{1F4C1} {} (id: {}, class: {})",
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idx, entry.title, entry.id, entry.class);
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} else {
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let has_audio = entry.resources.iter().any(is_audio_resource);
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let icon = if has_audio { "\u{266B}" } else { "\u{1F4C4}" };
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println!(" [{}] {} {} (id: {}, class: {})",
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idx, icon, entry.title, entry.id, entry.class);
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}
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}
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}
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/// Collect playable items from MediaEntry list (including nested containers).
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fn collect_playable_items(server: &MusicServer, entries: &[MediaEntry]) -> Result<Vec<PlaybackItem>> {
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let mut items = Vec::new();
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for entry in entries {
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if entry.is_container {
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// Recursively collect from container
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match server.browse_children(&entry.id, 0, 100) {
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Ok(children) => {
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items.extend(collect_playable_items(server, &children)?);
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}
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Err(err) => {
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eprintln!("Warning: failed to browse container '{}': {}", entry.title, err);
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}
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}
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} else {
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if let Some(item) = playback_item_from_entry(server, entry) {
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items.push(item);
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}
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}
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}
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Ok(items)
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}
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/// Convert MediaEntry to PlaybackItem.
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fn playback_item_from_entry(server: &MusicServer, entry: &MediaEntry) -> Option<PlaybackItem> {
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let resource = entry.resources.iter().find(|res| is_audio_resource(res))?;
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let mut item = PlaybackItem::new(resource.uri.clone());
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item.title = Some(entry.title.clone());
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item.server_id = Some(server.id().clone());
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item.object_id = Some(entry.id.clone());
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Some(item)
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}
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/// Check if MediaResource is audio.
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fn is_audio_resource(res: &MediaResource) -> bool {
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let lower = res.protocol_info.to_ascii_lowercase();
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if lower.contains("audio/") {
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return true;
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}
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lower
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.split(':')
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.nth(2)
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.map(|mime| mime.starts_with("audio/"))
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.unwrap_or(false)
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}
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/// Read yes/no from stdin.
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fn read_yes_no() -> Result<bool> {
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loop {
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print!("> ");
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io::stdout().flush()?;
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let mut input = String::new();
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io::stdin().read_line(&mut input)?;
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match input.trim().to_lowercase().as_str() {
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"y" | "yes" => return Ok(true),
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"n" | "no" => return Ok(false),
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_ => println!("Please enter 'y' or 'n'"),
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}
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}
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}
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/// Spawn thread to display renderer events in real-time.
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fn spawn_renderer_event_thread(
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control_point: Arc<ControlPoint>,
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renderer_id: pmocontrol::model::RendererId,
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) {
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let event_rx = control_point.subscribe_events();
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thread::spawn(move || {
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loop {
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match event_rx.recv() {
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Ok(event) => {
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match event {
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RendererEvent::StateChanged { id, state } => {
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if id == renderer_id {
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println!("\n[EVENT] Renderer state changed: {:?}", state);
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print!("> ");
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io::stdout().flush().ok();
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}
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}
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RendererEvent::PositionChanged { id, position } => {
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if id == renderer_id {
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let rel = position.rel_time.as_deref().unwrap_or("-");
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let dur = position.track_duration.as_deref().unwrap_or("-");
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println!("\n[EVENT] Position: {} / {}", rel, dur);
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print!("> ");
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io::stdout().flush().ok();
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}
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}
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RendererEvent::VolumeChanged { id, volume } => {
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if id == renderer_id {
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println!("\n[EVENT] Volume changed: {}", volume);
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print!("> ");
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io::stdout().flush().ok();
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}
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}
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RendererEvent::MuteChanged { id, mute } => {
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if id == renderer_id {
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println!("\n[EVENT] Mute changed: {}", mute);
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print!("> ");
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io::stdout().flush().ok();
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}
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}
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}
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}
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Err(_) => {
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eprintln!("\n[EVENT] Renderer event channel closed");
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break;
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}
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}
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}
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});
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}
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/// Spawn thread to display media server events in real-time.
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fn spawn_media_server_event_thread(
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control_point: Arc<ControlPoint>,
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renderer_id: pmocontrol::model::RendererId,
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) {
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let media_event_rx = control_point.subscribe_media_server_events();
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thread::spawn(move || {
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loop {
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match media_event_rx.recv() {
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Ok(event) => {
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match event {
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MediaServerEvent::GlobalUpdated { server_id, system_update_id } => {
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println!("\n[MEDIA EVENT] Server {} global update (SystemUpdateID={})",
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server_id.0, system_update_id.unwrap_or(0));
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print!("> ");
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io::stdout().flush().ok();
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}
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MediaServerEvent::ContainersUpdated { server_id, container_ids } => {
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println!("\n[MEDIA EVENT] Server {} containers updated: {:?}",
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server_id.0, container_ids);
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// Check if bound container was updated
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if let Some((bound_server, bound_container, _)) =
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control_point.current_queue_playlist_binding(&renderer_id)
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{
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if bound_server == server_id && container_ids.contains(&bound_container) {
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println!("[MEDIA EVENT] → Bound playlist '{}' was updated!", bound_container);
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}
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}
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print!("> ");
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io::stdout().flush().ok();
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}
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}
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}
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Err(_) => {
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eprintln!("\n[MEDIA EVENT] Media server event channel closed");
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break;
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}
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}
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}
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});
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}
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/// Print help message for control commands.
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fn print_help() {
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println!("Available commands:");
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println!(" p - Pause");
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println!(" r - Resume/Play");
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println!(" s - Stop");
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println!(" n - Next track");
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println!(" + - Volume +5");
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println!(" - - Volume -5");
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println!(" m - Toggle mute");
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println!(" i - Show renderer info (state, position, volume)");
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println!(" k - Show current queue");
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println!(" b - Show playlist binding");
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println!(" h - Show this help");
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println!(" q - Quit gracefully");
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println!(" Q - Quit immediately");
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}
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/// Main interactive control loop.
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fn run_control_loop(
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control_point: Arc<ControlPoint>,
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renderer_id: pmocontrol::model::RendererId,
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) -> Result<()> {
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let stdin = io::stdin();
|
|
let mut reader = stdin.lock();
|
|
|
|
loop {
|
|
print!("> ");
|
|
io::stdout().flush()?;
|
|
|
|
let mut line = String::new();
|
|
reader.read_line(&mut line)?;
|
|
let cmd = line.trim();
|
|
|
|
if cmd.is_empty() {
|
|
continue;
|
|
}
|
|
|
|
match cmd {
|
|
"q" => {
|
|
println!("Quitting...");
|
|
break;
|
|
}
|
|
"Q" => {
|
|
println!("Quitting immediately!");
|
|
process::exit(0);
|
|
}
|
|
"h" => {
|
|
print_help();
|
|
}
|
|
"p" => {
|
|
if let Err(err) = pause_renderer(&control_point, &renderer_id) {
|
|
eprintln!("Pause failed: {}", err);
|
|
} else {
|
|
println!("✓ Paused");
|
|
}
|
|
}
|
|
"r" => {
|
|
if let Err(err) = resume_renderer(&control_point, &renderer_id) {
|
|
eprintln!("Resume failed: {}", err);
|
|
} else {
|
|
println!("✓ Resumed");
|
|
}
|
|
}
|
|
"s" => {
|
|
if let Err(err) = stop_renderer(&control_point, &renderer_id) {
|
|
eprintln!("Stop failed: {}", err);
|
|
} else {
|
|
println!("✓ Stopped");
|
|
}
|
|
}
|
|
"n" => {
|
|
if let Err(err) = control_point.play_next_from_queue(&renderer_id) {
|
|
eprintln!("Next track failed: {}", err);
|
|
} else {
|
|
println!("✓ Playing next track");
|
|
}
|
|
}
|
|
"+" => {
|
|
if let Err(err) = adjust_volume(&control_point, &renderer_id, 5) {
|
|
eprintln!("Volume adjustment failed: {}", err);
|
|
} else {
|
|
println!("✓ Volume +5");
|
|
}
|
|
}
|
|
"-" => {
|
|
if let Err(err) = adjust_volume(&control_point, &renderer_id, -5) {
|
|
eprintln!("Volume adjustment failed: {}", err);
|
|
} else {
|
|
println!("✓ Volume -5");
|
|
}
|
|
}
|
|
"m" => {
|
|
if let Err(err) = toggle_mute(&control_point, &renderer_id) {
|
|
eprintln!("Mute toggle failed: {}", err);
|
|
} else {
|
|
println!("✓ Mute toggled");
|
|
}
|
|
}
|
|
"i" => {
|
|
if let Err(err) = show_renderer_info(&control_point, &renderer_id) {
|
|
eprintln!("Failed to get renderer info: {}", err);
|
|
}
|
|
}
|
|
"k" => {
|
|
if let Err(err) = show_queue(&control_point, &renderer_id) {
|
|
eprintln!("Failed to get queue: {}", err);
|
|
}
|
|
}
|
|
"b" => {
|
|
show_binding(&control_point, &renderer_id);
|
|
}
|
|
_ => {
|
|
println!("Unknown command '{}'. Type 'h' for help.", cmd);
|
|
}
|
|
}
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
/// Pause the renderer.
|
|
fn pause_renderer(
|
|
control_point: &ControlPoint,
|
|
renderer_id: &pmocontrol::model::RendererId,
|
|
) -> Result<()> {
|
|
let renderer = control_point.music_renderer_by_id(renderer_id)
|
|
.ok_or_else(|| anyhow!("Renderer not found"))?;
|
|
renderer.pause()?;
|
|
Ok(())
|
|
}
|
|
|
|
/// Resume/play the renderer.
|
|
fn resume_renderer(
|
|
control_point: &ControlPoint,
|
|
renderer_id: &pmocontrol::model::RendererId,
|
|
) -> Result<()> {
|
|
let renderer = control_point.music_renderer_by_id(renderer_id)
|
|
.ok_or_else(|| anyhow!("Renderer not found"))?;
|
|
renderer.play()?;
|
|
Ok(())
|
|
}
|
|
|
|
/// Stop the renderer.
|
|
fn stop_renderer(
|
|
control_point: &ControlPoint,
|
|
renderer_id: &pmocontrol::model::RendererId,
|
|
) -> Result<()> {
|
|
let renderer = control_point.music_renderer_by_id(renderer_id)
|
|
.ok_or_else(|| anyhow!("Renderer not found"))?;
|
|
renderer.stop()?;
|
|
Ok(())
|
|
}
|
|
|
|
/// Adjust volume by delta (-100 to +100).
|
|
fn adjust_volume(
|
|
control_point: &ControlPoint,
|
|
renderer_id: &pmocontrol::model::RendererId,
|
|
delta: i32,
|
|
) -> Result<()> {
|
|
let renderer = control_point.music_renderer_by_id(renderer_id)
|
|
.ok_or_else(|| anyhow!("Renderer not found"))?;
|
|
|
|
let current = renderer.volume()?;
|
|
let new_volume = (current as i32 + delta).clamp(0, 100) as u16;
|
|
renderer.set_volume(new_volume)?;
|
|
|
|
Ok(())
|
|
}
|
|
|
|
/// Toggle mute.
|
|
fn toggle_mute(
|
|
control_point: &ControlPoint,
|
|
renderer_id: &pmocontrol::model::RendererId,
|
|
) -> Result<()> {
|
|
let renderer = control_point.music_renderer_by_id(renderer_id)
|
|
.ok_or_else(|| anyhow!("Renderer not found"))?;
|
|
|
|
let current_mute = renderer.mute()?;
|
|
renderer.set_mute(!current_mute)?;
|
|
|
|
Ok(())
|
|
}
|
|
|
|
/// Show renderer info (state, position, volume, mute).
|
|
fn show_renderer_info(
|
|
control_point: &ControlPoint,
|
|
renderer_id: &pmocontrol::model::RendererId,
|
|
) -> Result<()> {
|
|
let renderer = control_point.music_renderer_by_id(renderer_id)
|
|
.ok_or_else(|| anyhow!("Renderer not found"))?;
|
|
|
|
println!("\n=== Renderer Info ===");
|
|
println!("Name: {}", renderer.info().friendly_name);
|
|
|
|
match renderer.playback_state() {
|
|
Ok(state) => println!("State: {:?}", state),
|
|
Err(err) => println!("State: <error: {}>", err),
|
|
}
|
|
|
|
match renderer.playback_position() {
|
|
Ok(pos) => {
|
|
let rel = pos.rel_time.as_deref().unwrap_or("-");
|
|
let dur = pos.track_duration.as_deref().unwrap_or("-");
|
|
println!("Position: {} / {}", rel, dur);
|
|
}
|
|
Err(err) => println!("Position: <error: {}>", err),
|
|
}
|
|
|
|
match renderer.volume() {
|
|
Ok(vol) => println!("Volume: {}", vol),
|
|
Err(err) => println!("Volume: <error: {}>", err),
|
|
}
|
|
|
|
match renderer.mute() {
|
|
Ok(mute) => println!("Mute: {}", mute),
|
|
Err(err) => println!("Mute: <error: {}>", err),
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
/// Show current queue.
|
|
fn show_queue(
|
|
control_point: &ControlPoint,
|
|
renderer_id: &pmocontrol::model::RendererId,
|
|
) -> Result<()> {
|
|
let queue = control_point.get_queue_snapshot(renderer_id)?;
|
|
|
|
println!("\n=== Queue ({} items) ===", queue.len());
|
|
if queue.is_empty() {
|
|
println!(" <empty>");
|
|
} else {
|
|
for (idx, item) in queue.iter().enumerate() {
|
|
let title = item.title.as_deref().unwrap_or("<no title>");
|
|
println!(" [{}] {}", idx, title);
|
|
}
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
/// Show playlist binding info.
|
|
fn show_binding(
|
|
control_point: &ControlPoint,
|
|
renderer_id: &pmocontrol::model::RendererId,
|
|
) {
|
|
match control_point.current_queue_playlist_binding(renderer_id) {
|
|
Some((server_id, container_id, has_seen_update)) => {
|
|
println!("\n=== Playlist Binding ===");
|
|
println!("Server ID: {}", server_id.0);
|
|
println!("Container ID: {}", container_id);
|
|
println!("Has seen update: {}", has_seen_update);
|
|
}
|
|
None => {
|
|
println!("\n=== Playlist Binding ===");
|
|
println!(" <no binding>");
|
|
}
|
|
}
|
|
}
|