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//! Project I/O and sequence loading for PlayaApp.
//!
//! Contains methods for:
//! - Loading sequences from files (load_sequences)
//! - Saving/loading projects (save_project, load_project, quick_save)
//! - File dialogs (show_open_project_dialog)
//! - Frame preloading (enqueue_frame_loads_around_playhead)
use super::PlayaApp;
use crate::entities::FileNode;
use crate::entities::node::Node;
use log::{error, info, trace, warn};
use std::path::PathBuf;
use std::sync::Arc;
impl PlayaApp {
/// Attach composition event emitter to all comps in the current project.
pub fn attach_comp_event_emitter(&mut self) {
let emitter = self.comp_event_emitter.clone();
for arc_node in self.project.media.write().expect("media lock poisoned").values_mut() {
// Arc::make_mut: copy-on-write if other refs exist (rare at startup)
let node = std::sync::Arc::make_mut(arc_node);
node.set_event_emitter(emitter.clone());
}
}
/// Load sequences from file paths and append to player/project.
///
/// Detects sequences from provided paths, appends them to the player project,
/// and clears any error messages on success.
///
/// # Arguments
/// * `paths` - Vector of file paths to detect sequences from
///
/// # Returns
/// * `Ok(())` - Sequences loaded successfully
/// * `Err(String)` - Detection or loading failed with error message
pub fn load_sequences(&mut self, paths: Vec<PathBuf>) -> Result<(), String> {
match FileNode::detect_from_paths(paths) {
Ok(nodes) => {
if nodes.is_empty() {
let error_msg = "No valid sequences detected".to_string();
warn!("{}", error_msg);
self.error_msg = Some(error_msg.clone());
return Err(error_msg);
}
// Add all detected sequences to unified media pool
let nodes_count = nodes.len();
let mut first_uuid: Option<uuid::Uuid> = None;
for node in nodes {
let uuid = node.uuid();
let name = node.name().to_string();
let frames = node.frame_count();
let (start, end) = node.play_range(true);
info!("Adding FileNode: {} ({}) frames={} range={}..{}", name, uuid, frames, start, end);
// add_node() adds to media pool and order
self.project.add_node(node.into());
// Remember first sequence for activation
if self.player.active_comp().is_none() && first_uuid.is_none() {
first_uuid = Some(uuid);
}
}
self.attach_comp_event_emitter();
// Activate first sequence and trigger frame loading
if let Some(uuid) = first_uuid {
self.player.set_active_comp(Some(uuid), &mut self.project);
let total = self.player.total_frames(&self.project);
let range = self.player.play_range(&self.project);
info!("After activation: total_frames={} play_range={:?}", total, range);
self.node_editor_state.set_comp(uuid);
self.node_editor_state.mark_dirty();
self.enqueue_frame_loads_around_playhead(self.settings.preload_radius);
}
self.error_msg = None;
info!("Loaded {} clip(s)", nodes_count);
Ok(())
}
Err(e) => {
let error_msg = format!("Failed to load sequences: {}", e);
warn!("{}", error_msg);
self.error_msg = Some(error_msg.clone());
Err(error_msg)
}
}
}
/// Enqueue frame loading around playhead for active comp.
///
/// Unified interface: works for both File mode and Layer mode.
/// Enqueue only the current frame for immediate loading.
/// Used during attribute changes - shows result immediately while
/// debounced preloader schedules full preload after delay.
pub fn enqueue_current_frame_only(&self) {
self.enqueue_frame_loads_around_playhead(0);
}
/// File mode: loads frames from disk using spiral/forward strategies
/// Layer mode: composes frames from children (on-demand for now)
///
/// # Arguments
/// * `radius` - Frames around playhead to preload (-1 = entire comp, 0 = current only)
pub fn enqueue_frame_loads_around_playhead(&self, radius: i32) {
// Get active comp
let Some(comp_uuid) = self.player.active_comp() else {
trace!("No active comp for frame loading");
return;
};
// -1 means load entire comp (use i32::MAX, will be capped by work_area)
let effective_radius = if radius < 0 { i32::MAX } else { radius };
// Trigger preload (works for both File and Layer modes)
trace!("[PRELOAD] enqueue_frame_loads: comp={}, radius={}", comp_uuid, effective_radius);
self.project.with_comp(comp_uuid, |comp| {
comp.signal_preload(&self.workers, &self.project, effective_radius);
});
}
/// Save project to JSON file.
pub fn save_project(&mut self, path: PathBuf) {
if let Err(e) = self.project.to_json(&path) {
error!("{}", e);
self.error_msg = Some(e);
} else {
self.project.set_last_save_path(Some(path.clone()));
info!("Saved project to {}", path.display());
}
}
/// Quick save - saves to last path or shows dialog.
pub fn quick_save(&mut self) {
if let Some(path) = self.project.last_save_path() {
info!("Quick save to {}", path.display());
self.save_project(path);
} else {
// No previous save path - show file dialog
if let Some(path) = rfd::FileDialog::new()
.add_filter("Playa Project", &["playa"])
.add_filter("JSON", &["json"])
.set_file_name("project.playa")
.save_file()
{
self.save_project(path);
}
}
}
/// Show open project dialog.
pub fn show_open_project_dialog(&mut self) {
if let Some(path) = rfd::FileDialog::new()
.add_filter("Playa Project", &["playa", "json"])
.pick_file()
{
self.load_project(path);
}
}
/// Load project from JSON file.
pub fn load_project(&mut self, path: PathBuf) {
match crate::entities::Project::from_json(&path) {
Ok(mut project) => {
info!("Loaded project from {}", path.display());
// Attach schemas (not serialized)
project.attach_schemas();
// Rebuild runtime + set cache manager (unified)
project.rebuild_with_manager(
Arc::clone(&self.cache_manager),
self.settings.cache_strategy,
Some(self.comp_event_emitter.clone()),
);
// Set event emitter for auto-emit of AttrsChangedEvent
project.set_event_emitter(self.event_bus.emitter());
self.project = project;
// Restore active comp from project (also sync selection)
if let Some(active) = self.project.active() {
self.player.set_active_comp(Some(active), &mut self.project);
self.node_editor_state.set_comp(active);
} else {
// Ensure default if none
let uuid = self.project.ensure_default_comp();
self.player.set_active_comp(Some(uuid), &mut self.project);
self.node_editor_state.set_comp(uuid);
}
self.selected_media_uuid = self.project.selection().last().cloned();
self.error_msg = None;
// Mark active comp as dirty to trigger preload via centralized dirty check
if let Some(active) = self.player.active_comp() {
self.project.modify_comp(active, |comp| {
comp.attrs.mark_dirty();
});
}
}
Err(e) => {
error!("{}", e);
self.error_msg = Some(e);
}
}
}
}