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use anyhow::{Result, anyhow};
use futures_util::StreamExt;
use pin_utils::pin_mut;
use std::{
fmt::Display,
path::{Path, PathBuf},
time::UNIX_EPOCH,
};
use tokio::{fs::read_dir, task::JoinSet};
use crate::{db::Database, flac::handle_encode};
#[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: {}\t on file {}",
self.error,
self.file.to_string_lossy()
)
}
}
async fn handle_file(file: PathBuf, conn: Database) -> Result<()> {
match conn.check_file(&file).await {
Ok(true) => {
let modtime = file
.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();
let mut dirs = vec![abspath];
let mut counter: u64 = 0;
while let Some(dir) = dirs.pop() {
let mut read_dir = read_dir(dir).await?;
while let Some(entry) = read_dir.next_entry().await? {
let path = entry.path();
if path.is_dir() {
dirs.push(path);
} else 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 });
}
}
}
}
}
while let Some(task) = tasks.join_next().await {
match task {
Ok(Err(error)) => eprintln!("{error}"),
Err(error) => eprintln!("Error encountered:\t{}", error),
_ => {
counter += 1;
print!("\rParsed files:\t{counter}");
}
}
}
Ok(())
}
fn check_path(folderpath: Option<&PathBuf>) -> Result<(PathBuf, bool)> {
if let Some(real_path) = folderpath {
Ok((real_path.canonicalize()?, false))
} else {
Ok((PathBuf::new(), true))
}
}
pub async fn reencode_files(folderpath: Option<&PathBuf>, conn: &Database) -> Result<()> {
let (path, nocheck) = check_path(folderpath)?;
let stream = conn.get_toencode_stream().await?;
pin_mut!(stream);
let mut tasks = JoinSet::new();
let mut counter: u64 = 0;
while let Some(Ok(row)) = stream.next().await {
if let Some(file) = row.get_value(0)?.as_text() {
let filename = Path::new(file).canonicalize()?;
if nocheck || filename.starts_with(&path) {
tasks.spawn_blocking(move || handle_encode(filename));
}
}
}
let mut update_tasks = JoinSet::new();
while let Some(task) = tasks.join_next().await {
match task {
Ok(Ok(path)) => {
let newconn = conn.clone();
update_tasks.spawn(async move { newconn.update_file(path).await });
counter += 1;
print!("\rReencoded files:\t{counter}")
}
Ok(Err(error)) => eprintln!("{error}"),
Err(error) => eprintln!("Error encountered:\t{}", error),
}
}
while let Some(task) = update_tasks.join_next().await {
match task {
Ok(Err(error)) => eprintln!("{error}"),
Err(error) => eprintln!("Error encountered:\t{}", error),
_ => {}
}
}
Ok(())
}
pub async fn count_reencode_files(folderpath: Option<&PathBuf>, conn: &Database) -> Result<u64> {
let (path, nocheck) = check_path(folderpath)?;
let mut counter: u64 = 0;
let stream = conn.get_toencode_stream().await?;
pin_mut!(stream);
while let Some(Ok(row)) = stream.next().await {
if let Some(file) = row.get_value(0)?.as_text() {
let filename = Path::new(file).canonicalize()?;
if nocheck || filename.starts_with(&path) {
counter += 1;
}
}
}
Ok(counter)
}
#[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();
}
#[tokio::test]
async fn test_reencode_lots_of_files() {
let conn = Database::new("temp4.db").await.unwrap();
let path = PathBuf::from("./testfiles");
index_files_recursively(Path::new("./testfiles"), &conn)
.await
.unwrap();
println!("\n{}", count_reencode_files(None, &conn).await.unwrap());
reencode_files(Some(&path), &conn).await.unwrap();
std::fs::remove_file("temp4.db").unwrap();
}
}
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