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use anyhow::{Result, anyhow};
use futures_util::StreamExt;
#[allow(unused_imports)]
use indicatif::{ProgressBar, ProgressStyle};
use pin_utils::pin_mut;
use std::{
error::Error,
fmt::Display,
path::{Path, PathBuf},
time::UNIX_EPOCH,
};
use tokio::task::JoinSet;
use walkdir::WalkDir;
use crate::{db::Database, flac::encode_file};
#[allow(dead_code)]
const BAR_TEMPLATE: &str = "{msg} [{wide_bar:.green/cyan}] Elapsed: {elapsed} {pos:>7}/{len:7}";
#[derive(Debug)]
pub struct FileError {
file: PathBuf,
error: anyhow::Error,
}
impl FileError {
pub fn new(file: impl AsRef<Path>, error: anyhow::Error) -> Self {
FileError {
file: file.as_ref().to_path_buf(),
error,
}
}
}
impl Display for FileError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(
f,
"error: {}\ton file {}",
self.error,
self.file.to_string_lossy()
)
}
}
impl Error for FileError {}
async fn handle_file(file: impl AsRef<Path>, conn: Database) -> Result<()> {
match conn.check_file(&file).await {
Ok(true) => {
let modtime = file
.as_ref()
.metadata()?
.modified()?
.duration_since(UNIX_EPOCH)?
.as_secs();
let db_time = conn.get_modtime(&file).await?;
if modtime != db_time {
if let Err(error) = conn.update_file(&file).await {
return Err(anyhow!(FileError::new(file, error)));
};
}
return Ok(());
}
Err(error) => return Err(anyhow!(FileError::new(file, error))),
_ => {}
}
if let Err(error) = conn.insert_file(&file).await {
return Err(anyhow!(FileError::new(file, error)));
}
Ok(())
}
pub async fn index_files_recursively(path: impl AsRef<Path>, conn: &Database) -> Result<()> {
if !path.as_ref().is_dir() {
return Err(anyhow!("Invalid root directory"));
}
let abspath = path.as_ref().canonicalize()?;
let mut tasks = JoinSet::new();
#[cfg(not(test))]
let bar = ProgressBar::new(0)
.with_style(ProgressStyle::with_template(BAR_TEMPLATE)?.progress_chars("#>-"))
.with_message("Indexing");
let _ = WalkDir::new(abspath)
.into_iter()
.map(|file| {
let path = file.unwrap().into_path();
if path.is_file() {
if let Some(ext) = path.extension() {
if ext == "flac" {
let newconn = conn.clone();
tasks.spawn(async move { handle_file(path, newconn).await });
#[cfg(not(test))]
bar.inc_length(1);
}
}
}
})
.collect::<Vec<_>>();
while let Some(task) = tasks.join_next().await {
match task {
Ok(Err(error)) => eprintln!("{error}"),
Err(error) => eprintln!("Error encountered:\t{}", error),
_ => {
#[cfg(not(test))]
bar.inc(1);
}
}
}
#[cfg(not(test))]
bar.finish_with_message("Finished indexing");
Ok(())
}
pub async fn reencode_files(conn: &Database) -> Result<()> {
let stream = conn.get_toencode_stream().await?;
pin_mut!(stream);
let mut tasks = JoinSet::new();
#[cfg(not(test))]
let bar = ProgressBar::new(conn.get_toencode_number().await?)
.with_style(ProgressStyle::with_template(BAR_TEMPLATE)?.progress_chars("#>-"))
.with_message("Reencoding");
while let Some(Ok(row)) = stream.next().await {
if let Some(file) = row.get_value(0)?.as_text() {
let filename = Path::new(file).canonicalize()?;
let newconn = conn.clone();
tasks.spawn(async move {
let file = filename.clone();
if let Err(error) = tokio::task::spawn_blocking(move || encode_file(file)).await? {
return Err(anyhow!(FileError::new(&filename, error)));
};
if let Err(error) = newconn.update_file(&filename).await {
return Err(anyhow!(FileError::new(&filename, error)));
};
Ok(())
});
}
}
while let Some(task) = tasks.join_next().await {
match task {
Ok(Err(error)) => eprintln!("Error encountered:\t{error}"),
Err(error) => eprintln!("Error encountered:\t{error}"),
_ => {
#[cfg(not(test))]
bar.inc(1);
}
}
}
#[cfg(not(test))]
bar.finish_with_message("Finished encoding");
Ok(())
}
#[cfg(test)]
mod tests {
use super::*;
#[tokio::test]
async fn test_index_lots_of_files() {
let conn = Database::new("temp3.db").await.unwrap();
index_files_recursively(Path::new("./testfiles"), &conn)
.await
.unwrap();
std::fs::remove_file("temp3.db").unwrap();
}
#[test]
fn test_reencode_lots_of_files() {
let runtime = tokio::runtime::Builder::new_multi_thread()
.max_blocking_threads(4)
.enable_all()
.build()
.unwrap();
runtime.block_on(async move {
let conn = Database::new("temp4.db").await.unwrap();
index_files_recursively(Path::new("./testfiles"), &conn)
.await
.unwrap();
println!("\n{}", conn.get_toencode_number().await.unwrap());
reencode_files(&conn).await.unwrap();
println!("\n{}", conn.get_toencode_number().await.unwrap());
});
std::fs::remove_file("temp4.db").unwrap();
}
}
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