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//! Recovery and auto-save operations for the Editor.
//!
//! This module contains crash recovery and auto-save functionality:
//! - Starting/ending recovery sessions
//! - Checking for and listing recoverable files
//! - Recovering buffers from crash
//! - Auto-saving modified buffers
//! - Cleaning up recovery files
use anyhow::Result as AnyhowResult;
use crate::model::event::BufferId;
use super::Editor;
impl Editor {
/// Start the recovery session (call on editor startup after recovery check)
pub fn start_recovery_session(&mut self) -> AnyhowResult<()> {
Ok(self.recovery_service.start_session()?)
}
/// End the recovery session cleanly (call on normal shutdown)
pub fn end_recovery_session(&mut self) -> AnyhowResult<()> {
Ok(self.recovery_service.end_session()?)
}
/// Check if there are files to recover from a crash
pub fn has_recovery_files(&self) -> AnyhowResult<bool> {
Ok(self.recovery_service.should_offer_recovery()?)
}
/// Get list of recoverable files
pub fn list_recoverable_files(
&self,
) -> AnyhowResult<Vec<crate::services::recovery::RecoveryEntry>> {
Ok(self.recovery_service.list_recoverable()?)
}
/// Recover all buffers from recovery files
/// Returns the number of buffers recovered
pub fn recover_all_buffers(&mut self) -> AnyhowResult<usize> {
use crate::services::recovery::RecoveryResult;
let entries = self.recovery_service.list_recoverable()?;
let mut recovered_count = 0;
for entry in entries {
match self.recovery_service.accept_recovery(&entry) {
Ok(RecoveryResult::Recovered {
original_path,
content,
}) => {
// Full content recovery (new/small buffers)
let text = String::from_utf8_lossy(&content).into_owned();
if let Some(path) = original_path {
// Open the file path (this creates the buffer)
if self.open_file(&path).is_ok() {
// Replace buffer content with recovered content
let state = self.active_state_mut();
let total = state.buffer.total_bytes();
state.buffer.delete(0..total);
state.buffer.insert(0, &text);
// Mark as modified since it differs from disk
state.buffer.set_modified(true);
recovered_count += 1;
tracing::info!("Recovered buffer: {}", path.display());
}
} else {
// Unsaved buffer - create new buffer with recovered content
self.new_buffer();
let state = self.active_state_mut();
state.buffer.insert(0, &text);
state.buffer.set_modified(true);
recovered_count += 1;
tracing::info!("Recovered unsaved buffer");
}
}
Ok(RecoveryResult::RecoveredChunks {
original_path,
chunks,
}) => {
// Chunked recovery for large files - apply chunks directly
if self.open_file(&original_path).is_ok() {
let state = self.active_state_mut();
// Apply chunks in reverse order to preserve offsets
// Each chunk: delete original_len bytes at offset, then insert content
for chunk in chunks.into_iter().rev() {
let text = String::from_utf8_lossy(&chunk.content).into_owned();
if chunk.original_len > 0 {
state
.buffer
.delete(chunk.offset..chunk.offset + chunk.original_len);
}
state.buffer.insert(chunk.offset, &text);
}
// Mark as modified since it differs from disk
state.buffer.set_modified(true);
recovered_count += 1;
tracing::info!("Recovered buffer with chunks: {}", original_path.display());
}
}
Ok(RecoveryResult::OriginalFileModified { id, original_path }) => {
tracing::warn!(
"Recovery file {} skipped: original file {} was modified",
id,
original_path.display()
);
// Delete the recovery file since it's no longer valid
let _ = self.recovery_service.discard_recovery(&entry);
}
Ok(RecoveryResult::Corrupted { id, reason }) => {
tracing::warn!("Recovery file {} corrupted: {}", id, reason);
}
Ok(RecoveryResult::NotFound { id }) => {
tracing::warn!("Recovery file {} not found", id);
}
Err(e) => {
tracing::warn!("Failed to recover {}: {}", entry.id, e);
}
}
}
Ok(recovered_count)
}
/// Discard all recovery files (user decided not to recover)
/// Returns the number of recovery files deleted
pub fn discard_all_recovery(&mut self) -> AnyhowResult<usize> {
Ok(self.recovery_service.discard_all_recovery()?)
}
/// Perform auto-save for all modified buffers if needed
/// Returns the number of buffers saved, or an error
///
/// This function is designed to be called frequently (every frame) and will:
/// - Return immediately if recovery is disabled
/// - Return immediately if the auto-save interval hasn't passed
/// - Return immediately if no buffers are modified
/// - Only save buffers that are marked as needing a save
pub fn auto_save_dirty_buffers(&mut self) -> AnyhowResult<usize> {
// Early exit if disabled
if !self.recovery_service.is_enabled() {
return Ok(0);
}
// Check if enough time has passed since last auto-save
let interval =
std::time::Duration::from_secs(self.config.editor.auto_save_interval_secs as u64);
if self.time_source.elapsed_since(self.last_auto_save) < interval {
return Ok(0);
}
// Collect buffer info first to avoid borrow issues
// Only include buffers that have pending recovery changes AND need auto-save
// Skip composite buffers and hidden buffers (they should not be saved for recovery)
let buffer_info: Vec<_> = self
.buffers
.iter()
.filter_map(|(buffer_id, state)| {
// Skip composite buffers - they are virtual views, not real content
if state.is_composite_buffer {
return None;
}
// Skip hidden buffers - they are managed by other buffers (e.g., diff sources)
if let Some(meta) = self.buffer_metadata.get(buffer_id) {
if meta.hidden_from_tabs || meta.is_virtual() {
return None;
}
}
let recovery_pending = state.buffer.is_recovery_pending();
if recovery_pending {
let path = state.buffer.file_path().map(|p| p.to_path_buf());
let recovery_id = self.recovery_service.get_buffer_id(path.as_deref());
// Only save if enough time has passed since last recovery save
if self
.recovery_service
.needs_auto_save(&recovery_id, recovery_pending)
{
Some((*buffer_id, recovery_id, path))
} else {
None
}
} else {
None
}
})
.collect();
// Early exit if nothing to save
if buffer_info.is_empty() {
// Still update the timer to avoid checking buffers too frequently
self.last_auto_save = self.time_source.now();
return Ok(0);
}
let mut saved_count = 0;
for (buffer_id, recovery_id, path) in buffer_info {
if let Some(state) = self.buffers.get_mut(&buffer_id) {
let line_count = state.buffer.line_count();
// For large files, use chunked recovery to avoid reading entire file
if state.buffer.is_large_file() {
let chunks = state.buffer.get_recovery_chunks();
// If no modifications, skip saving (original file is recovery)
if chunks.is_empty() {
state.buffer.set_recovery_pending(false);
continue;
}
// Convert to RecoveryChunk format
let recovery_chunks: Vec<_> = chunks
.into_iter()
.map(|(offset, content)| {
crate::services::recovery::types::RecoveryChunk::new(
offset, 0, // For insertions, original_len is 0
content,
)
})
.collect();
let original_size = state.buffer.original_file_size().unwrap_or(0);
let final_size = state.buffer.total_bytes();
tracing::debug!(
"auto_save_dirty_buffers: large file recovery - original_size={}, final_size={}, path={:?}",
original_size,
final_size,
path
);
self.recovery_service.save_buffer(
&recovery_id,
recovery_chunks,
path.as_deref(),
None,
line_count,
original_size,
final_size,
)?;
tracing::debug!(
"Saved chunked recovery for large file (original: {} bytes, final: {} bytes)",
original_size,
final_size
);
} else {
// For small files, save full content as a single chunk
let total_bytes = state.buffer.total_bytes();
let content = match state.buffer.get_text_range_mut(0, total_bytes) {
Ok(bytes) => bytes,
Err(e) => {
tracing::warn!("Failed to get buffer content for recovery save: {}", e);
continue;
}
};
let chunks = vec![crate::services::recovery::types::RecoveryChunk::new(
0, 0, content,
)];
self.recovery_service.save_buffer(
&recovery_id,
chunks,
path.as_deref(),
None,
line_count,
0, // original_file_size = 0 for new/small files
total_bytes, // final_size
)?;
}
// Clear recovery_pending flag after successful save
state.buffer.set_recovery_pending(false);
saved_count += 1;
}
}
self.last_auto_save = self.time_source.now();
Ok(saved_count)
}
/// Check if the active buffer is marked dirty for recovery auto-save
/// Used for testing to verify that edits properly trigger recovery tracking
pub fn is_active_buffer_recovery_dirty(&self) -> bool {
if let Some(state) = self.buffers.get(&self.active_buffer()) {
state.buffer.is_recovery_pending()
} else {
false
}
}
/// Delete recovery for a buffer (call after saving or closing)
pub fn delete_buffer_recovery(&mut self, buffer_id: BufferId) -> AnyhowResult<()> {
if let Some(state) = self.buffers.get_mut(&buffer_id) {
let path = state.buffer.file_path().map(|p| p.to_path_buf());
let recovery_id = self.recovery_service.get_buffer_id(path.as_deref());
self.recovery_service.delete_buffer_recovery(&recovery_id)?;
// Clear recovery_pending since buffer is now saved
state.buffer.set_recovery_pending(false);
}
Ok(())
}
}