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//! Post-processing pipeline entry point.
use crate::error::{Error, Result};
use crate::types::{DownloadId, Event, Status};
use std::path::PathBuf;
use super::UsenetDownloader;
impl UsenetDownloader {
/// Start post-processing for a completed download
///
/// This is the entry point to the post-processing pipeline. It coordinates
/// verification, repair, extraction, moving, and cleanup based on the
/// configured PostProcess mode.
///
/// # Arguments
///
/// * `download_id` - The download to post-process
///
/// # Returns
///
/// Returns Ok(()) on success, Err on any stage failure
///
/// # Example
///
/// ```no_run
/// use usenet_dl::{UsenetDownloader, Config};
///
/// #[tokio::main]
/// async fn main() -> Result<(), Box<dyn std::error::Error>> {
/// let downloader = UsenetDownloader::new(Config::default()).await?;
///
/// // After download completes, start post-processing
/// downloader.start_post_processing(1).await?;
///
/// Ok(())
/// }
/// ```
pub async fn start_post_processing(&self, download_id: DownloadId) -> Result<()> {
tracing::info!(download_id = download_id.0, "starting post-processing");
// Update status to Processing
self.db
.update_status(download_id, Status::Processing.to_i32())
.await?;
// Get download info from database
let download = self
.db
.get_download(download_id)
.await?
.ok_or_else(|| Error::NotFound(format!("download {} not found", download_id.0)))?;
// Determine download path (temp directory)
let download_path = self
.config
.download
.temp_dir
.join(format!("download_{}", download_id.0));
// Determine final destination
let destination = PathBuf::from(&download.destination);
// Determine post-processing mode
let post_process = crate::config::PostProcess::from_i32(download.post_process);
// Execute post-processing pipeline
match self
.processing
.post_processor
.start_post_processing(download_id, download_path, post_process, destination)
.await
{
Ok(final_path) => {
self.handle_post_process_success(
download_id,
download.name,
download.category,
download.size_bytes as u64,
final_path,
)
.await
}
Err(e) => {
self.handle_post_process_failure(
download_id,
download.name,
download.category,
download.size_bytes as u64,
e,
)
.await
}
}
}
/// Handle successful post-processing: update status, emit events, trigger webhooks/scripts.
async fn handle_post_process_success(
&self,
download_id: DownloadId,
name: String,
category: Option<String>,
size_bytes: u64,
final_path: PathBuf,
) -> Result<()> {
self.db
.update_status(download_id, Status::Complete.to_i32())
.await?;
self.event_tx
.send(Event::Complete {
id: download_id,
path: final_path.clone(),
})
.ok();
self.trigger_webhooks(super::webhooks::TriggerWebhooksParams {
event_type: crate::config::WebhookEvent::OnComplete,
download_id,
name: name.clone(),
category: category.clone(),
status: "complete".to_string(),
destination: Some(final_path.clone()),
error: None,
});
self.trigger_scripts(super::webhooks::TriggerScriptsParams {
event_type: crate::config::ScriptEvent::OnPostProcessComplete,
download_id,
name: name.clone(),
category: category.clone(),
status: "complete".to_string(),
destination: Some(final_path.clone()),
error: None,
size_bytes,
});
self.trigger_scripts(super::webhooks::TriggerScriptsParams {
event_type: crate::config::ScriptEvent::OnComplete,
download_id,
name,
category,
status: "complete".to_string(),
destination: Some(final_path),
error: None,
size_bytes,
});
tracing::info!(
download_id = download_id.0,
"post-processing completed successfully"
);
Ok(())
}
/// Handle failed post-processing: update status, emit events, trigger webhooks/scripts.
async fn handle_post_process_failure(
&self,
download_id: DownloadId,
name: String,
category: Option<String>,
size_bytes: u64,
e: Error,
) -> Result<()> {
let error_message = e.to_string();
self.db
.update_status(download_id, Status::Failed.to_i32())
.await?;
self.db.set_error(download_id, &error_message).await?;
self.event_tx
.send(Event::Failed {
id: download_id,
stage: crate::types::Stage::Extract, // Default to Extract stage
error: error_message.clone(),
files_kept: true, // Default: keep files on failure
})
.ok();
self.trigger_webhooks(super::webhooks::TriggerWebhooksParams {
event_type: crate::config::WebhookEvent::OnFailed,
download_id,
name: name.clone(),
category: category.clone(),
status: "failed".to_string(),
destination: None,
error: Some(error_message.clone()),
});
self.trigger_scripts(super::webhooks::TriggerScriptsParams {
event_type: crate::config::ScriptEvent::OnFailed,
download_id,
name,
category,
status: "failed".to_string(),
destination: None,
error: Some(error_message),
size_bytes,
});
tracing::error!(download_id = download_id.0, error = %e, "post-processing failed");
Err(e)
}
}