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on:
push:
branches: [ main ]
pull_request:
branches: [ main ]
name: "Build project"
env:
CARGO_TERM_COLOR: always
jobs:
build_and_test:
name: DownOnSpot
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- run: sudo apt install -y libasound2-dev libmp3lame-dev
- uses: actions-rs/toolchain@v1
with:
override: true
toolchain: nightly
- run: cargo build --release --all-features

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/target
settings.json
Cargo.lock
libmp3lame.dll

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{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"type": "lldb",
"request": "launch",
"name": "Debug executable 'down_on_spot'",
"cargo": {
"args": [
"build",
"--bin=down_on_spot",
"--package=down_on_spot"
],
"filter": {
"name": "down_on_spot",
"kind": "bin"
}
},
"args": [
"https://open.spotify.com/track/2Ju1xUOXSS1C6GOvlTHXUp?si=60e759a084d2470d"
],
"cwd": "${workspaceFolder}"
},
{
"type": "lldb",
"request": "launch",
"name": "Debug unit tests in executable 'down_on_spot'",
"cargo": {
"args": [
"test",
"--no-run",
"--bin=down_on_spot",
"--package=down_on_spot"
],
"filter": {
"name": "down_on_spot",
"kind": "bin"
}
},
"args": [],
"cwd": "${workspaceFolder}"
}
]
}

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Cargo.toml Normal file
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cargo-features = ["strip"]
[profile.release]
strip = true
opt-level = "z"
lto = true
codegen-units = 1
panic = "abort"
[package]
name = "down_on_spot"
version = "0.0.1"
edition = "2018"
authors = ["exttex", "oSumAtrIX"]
build = "build.rs"
[target.'cfg(windows)'.build-dependencies]
winres = "0.1.12"
[dependencies]
log = "0.4.14"
url = "2.2"
id3 = "0.6"
dirs = "3.0"
chrono = "0.4"
lewton = "0.10"
futures = "0.3"
reqwest = "0.11"
colored = "2"
lame = "0.1.3"
aspotify = "0.7"
librespot = "0.2"
async-std = { version = "1.10.0", features = ["attributes", "tokio1"] }
serde_json = "1.0"
async-stream = "0.3"
oggvorbismeta = "0.1"
sanitize-filename = "0.3"
serde = { version = "1.0.130", features = ["derive"] }
tokio = { version = "1.12", features = ["fs"] }
[package.metadata.winres]
OriginalFilename = "DownOnSpot.exe"
FileDescription = "Download songs from spotify with rust"
ProductName = "DownOnSpot"
ProductVersion = "0.0.1"

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LICENSE Normal file
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Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

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<div align="center">
# DownOnSpot
### A Spotify downloader written in Rust
<img src="assets/icon.svg" alt="drawing" width="500"/>
</div>
## Disclaimer
```text
DownOnSpot was not developed for piracy, but educational and private usage.
It may be illegal to use this in your country!
I am not responsible in any way for the usage of this app.
```
## Features
- Multi-threaded
- Download 320 kbit/s audio from spotify, directly
- Download playlists and albums
- Convert to mp3
- Simple usage over CLI
## Building
To build this project you will need `Nightly Rust`. You can install it by following [rustup.rs](https://rustup.rs) instructions.
```bash
git clone https://github.com/oSumAtrIX/DownOnSpot.git
cd DownOnSpot
cargo build --release
```
If you get a linker error, you might need to download the [standard libmp3lame](https://www.rarewares.org/mp3-lame-libraries.php#libmp3lame) library.
## Usage/Examples
To install and use DownOnSpot, edit the configuration file which is being created in the same directory as your shell on first launch.
```bash
$ down_on_spot.exe
Settings could not be loaded, because of the following error: IO: NotFound No such file or directory. (os error 2)...
..but default settings have been created successfully. Edit them and run the program again.
$ down_on_spot.exe
Usage:
down_on_spot.exe (track_url | album_url | playlist_url)
```
## Authors
- [@oSumAtrIX](https://osumatrix.me/#github)
- [@exttex](https://git.freezer.life/exttex)
## License
[GPL3](https://choosealicense.com/licenses/agpl-3.0/)

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fn main() {
#[cfg(windows)]
{
winres::WindowsResource::new()
.set_icon("assets/icon.ico")
.compile()
.unwrap();
}
}

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use lewton::inside_ogg::OggStreamReader;
use std::io::{Error, ErrorKind, Read, Seek};
use crate::downloader::{AudioFormat, Quality};
use crate::error::SpotifyError;
use crate::error::SpotifyError::{LameConverterError, InvalidFormat};
/// Converts audio to MP3
pub enum AudioConverter {
OGG {
decoder: OggStreamReader<ReadWrap>,
lame: lame::Lame,
lame_end: bool,
},
}
unsafe impl Send for AudioConverter {}
impl AudioConverter {
/// Wrap reader
pub fn new(
read: Box<(dyn Read + Send + 'static)>,
format: AudioFormat,
quality: Quality,
) -> Result<AudioConverter, SpotifyError> {
// Create encoder
let bitrate = match quality {
Quality::Q320 => 320,
Quality::Q256 => 256,
Quality::Q160 => 160,
Quality::Q96 => 96,
};
let mut lame = lame::Lame::new().unwrap();
match lame.set_channels(2) {
Ok(_) => {}
Err(_) => return Err(LameConverterError("Channels".to_string()))
};
match lame.set_quality(0) {
Ok(_) => {}
Err(_) => return Err(LameConverterError("Quality".to_string()))
};
match lame.set_kilobitrate(bitrate) {
Ok(_) => {}
Err(_) => return Err(LameConverterError("Bitrate".to_string()))
};
match format {
AudioFormat::AAC => todo!(),
AudioFormat::MP4 => todo!(),
// Lewton decoder
AudioFormat::OGG => {
let decoder = OggStreamReader::new(ReadWrap::new(Box::new(read)))?;
let sample_rate = decoder.ident_hdr.audio_sample_rate;
// Init lame
match lame.set_sample_rate(sample_rate) {
Ok(_) => {}
Err(_) => return Err(LameConverterError("Sample rate".to_string()))
};
match lame.init_params() {
Ok(_) => {}
Err(_) => return Err(LameConverterError("Init".to_string()))
};
Ok(AudioConverter::OGG {
lame,
decoder,
lame_end: false,
})
}
AudioFormat::MP3 => panic!("No reencoding allowd!"),
_ => Err(InvalidFormat),
}
}
}
impl Read for AudioConverter {
fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {
match self {
AudioConverter::OGG {
decoder,
lame,
lame_end,
} => {
match decoder.read_dec_packet() {
Ok(packet) => match packet {
Some(data) => {
// 0 sized packets aren't EOF
if data[0].is_empty() {
return self.read(buf);
}
let result = match lame.encode(&data[0], &data[1], buf) {
Ok(size) => {
if size == 0 {
return self.read(buf);
}
size
}
Err(_e) => {
drop(lame);
return Err(Error::new(
ErrorKind::InvalidData,
format!("Lame error: {:?}", _e),
));
}
};
Ok(result as usize)
}
None => {
if *lame_end {
return Ok(0);
}
// Flush buffer
drop(lame);
*lame_end = true;
Ok(0)
}
},
Err(e) => {
// Close lame
if !*lame_end {
drop(lame);
*lame_end = true;
}
warn!("Lawton error: {}, calling EOF", e);
Ok(0)
}
}
}
}
}
}
pub struct ReadWrap {
source: Box<(dyn Read + Send + 'static)>,
}
impl ReadWrap {
pub fn new(read: Box<(dyn Read + Send + 'static)>) -> ReadWrap {
ReadWrap {
source: Box::new(read),
}
}
}
impl Read for ReadWrap {
fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {
self.source.read(buf)
}
}
/// Fake seek for Rodio
impl Seek for ReadWrap {
fn seek(&mut self, _pos: std::io::SeekFrom) -> std::io::Result<u64> {
Ok(0)
}
}

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use async_std::channel::{bounded, Receiver, Sender};
use async_stream::try_stream;
use chrono::NaiveDate;
use futures::stream::FuturesUnordered;
use futures::{pin_mut, select, FutureExt, Stream, StreamExt};
use librespot::audio::{AudioDecrypt, AudioFile};
use librespot::core::audio_key::AudioKey;
use librespot::core::session::Session;
use librespot::core::spotify_id::SpotifyId;
use librespot::metadata::{FileFormat, Metadata, Track};
use sanitize_filename::sanitize;
use serde::{Deserialize, Serialize};
use std::io::Read;
use std::path::{Path, PathBuf};
use tokio::fs::File;
use tokio::io::AsyncWriteExt;
use crate::converter::AudioConverter;
use crate::error::SpotifyError;
use crate::spotify::{Spotify, SpotifyItem};
use crate::tag::{Field, TagWrap};
/// Wrapper for use with UI
#[derive(Debug, Clone)]
pub struct Downloader {
rx: Receiver<Response>,
tx: Sender<Message>,
spotify: Spotify,
}
impl Downloader {
/// Create new instance
pub fn new(config: DownloaderConfig, spotify: Spotify) -> Downloader {
let (tx_0, rx_0) = bounded(1);
let (tx_1, rx_1) = bounded(1);
let tx_clone = tx_1.clone();
let spotify_clone = spotify.clone();
tokio::spawn(async move {
communication_thread(config, spotify_clone, rx_1, tx_0, tx_clone).await
});
Downloader {
rx: rx_0,
tx: tx_1,
spotify,
}
}
/// Add item to download queue
pub async fn add_to_queue(&self, download: Download) {
self.tx
.send(Message::AddToQueue(vec![download]))
.await
.unwrap();
}
/// Add multiple items to queue
pub async fn add_to_queue_multiple(&self, downloads: Vec<Download>) {
self.tx.send(Message::AddToQueue(downloads)).await.unwrap();
}
/// Add URL or URI to queue
pub async fn add_uri(&self, uri: &str) -> Result<(), SpotifyError> {
let uri = Spotify::parse_uri(uri)?;
let item = self.spotify.resolve_uri(&uri).await?;
match item {
SpotifyItem::Track(t) => self.add_to_queue(t.into()).await,
SpotifyItem::Album(a) => {
let tracks = self.spotify.full_album(&a.id).await?;
let queue: Vec<Download> = tracks.into_iter().map(|t| t.into()).collect();
self.add_to_queue_multiple(queue).await;
}
SpotifyItem::Playlist(p) => {
let tracks = self.spotify.full_playlist(&p.id).await?;
let queue: Vec<Download> = tracks.into_iter().map(|t| t.into()).collect();
self.add_to_queue_multiple(queue).await;
}
// Unsupported
SpotifyItem::Other(u) => {
error!("Unsupported URI: {}", u);
return Err(SpotifyError::Unavailable);
}
};
Ok(())
}
/// Get all downloads
pub async fn get_downloads(&self) -> Vec<Download> {
self.tx.send(Message::GetDownloads).await.unwrap();
let Response::Downloads(d) = self.rx.recv().await.unwrap();
d
}
}
async fn communication_thread(
config: DownloaderConfig,
spotify: Spotify,
rx: Receiver<Message>,
tx: Sender<Response>,
self_tx: Sender<Message>,
) {
// Downloader
let downloader = DownloaderInternal::new(spotify.clone(), self_tx.clone());
let downloader_tx = downloader.tx.clone();
tokio::spawn(async move {
downloader.download_loop().await;
});
let mut waiting_for_job = false;
let mut queue: Vec<Download> = vec![];
// Receive messages
while let Ok(msg) = rx.recv().await {
match msg {
// Send job to worker thread
Message::GetJob => {
if let Some(d) = queue.iter_mut().find(|i| i.state == DownloadState::None) {
d.state = DownloadState::Lock;
downloader_tx
.send(DownloaderMessage::Job(d.clone().into(), config.clone()))
.await
.unwrap();
waiting_for_job = false;
} else {
waiting_for_job = true;
}
}
// Update state of download
Message::UpdateState(id, state) => {
let i = queue.iter().position(|i| i.id == id).unwrap();
queue[i].state = state.clone();
if state == DownloadState::Done {
queue.remove(i);
}
}
Message::AddToQueue(download) => {
// Assign new IDs and reset state
let mut id = queue.iter().map(|i| i.id).max().unwrap_or(0);
let downloads: Vec<Download> = download
.into_iter()
.map(|mut d| {
d.id = id;
d.state = DownloadState::None;
id += 1;
d
})
.collect();
queue.extend(downloads);
// Update worker threads if locked
if waiting_for_job {
let d = queue
.iter_mut()
.find(|i| i.state == DownloadState::None)
.unwrap();
d.state = DownloadState::Lock;
downloader_tx
.send(DownloaderMessage::Job(d.clone().into(), config.clone()))
.await
.unwrap();
waiting_for_job = false;
}
}
Message::GetDownloads => {
tx.send(Response::Downloads(queue.clone())).await.ok();
}
}
}
}
/// Spotify downloader
pub struct DownloaderInternal {
spotify: Spotify,
pub tx: Sender<DownloaderMessage>,
rx: Receiver<DownloaderMessage>,
event_tx: Sender<Message>,
}
pub enum DownloaderMessage {
Job(DownloadJob, DownloaderConfig),
}
impl DownloaderInternal {
/// Create new instance
pub fn new(spotify: Spotify, event_tx: Sender<Message>) -> DownloaderInternal {
let (tx, rx) = bounded(1);
DownloaderInternal {
spotify,
tx,
rx,
event_tx,
}
}
/// Downloader loop
pub async fn download_loop(&self) {
let mut queue = vec![];
let mut tasks = FuturesUnordered::new();
let mut job_future = Box::pin(self.get_job()).fuse();
loop {
select! {
job = job_future => {
if let Some((job, config)) = job {
if tasks.len() < config.concurrent_downloads {
tasks.push(self.download_job_wrapper(job.clone(), config).boxed())
} else {
queue.push((job, config));
}
}
job_future = Box::pin(self.get_job()).fuse();
},
// Task finished
() = tasks.select_next_some() => {
if let Some((job, config)) = queue.first() {
tasks.push(self.download_job_wrapper(job.clone(), config.clone()).boxed());
queue.remove(0);
}
}
};
}
}
// Get job from parent
async fn get_job(&self) -> Option<(DownloadJob, DownloaderConfig)> {
self.event_tx.send(Message::GetJob).await.unwrap();
match self.rx.recv().await.ok()? {
DownloaderMessage::Job(job, config) => Some((job, config)),
}
}
/// Wrapper for download_job for error handling
async fn download_job_wrapper(&self, job: DownloadJob, config: DownloaderConfig) {
let track_id = job.track_id.clone();
let id = job.id;
match self.download_job(job, config).await {
Ok(_) => {}
Err(e) => {
error!("Download job for track {} failed. {}", track_id, e);
self.event_tx
.send(Message::UpdateState(
id,
DownloadState::Error(e.to_string()),
))
.await
.unwrap();
}
}
}
// Wrapper for downloading and tagging
async fn download_job(
&self,
job: DownloadJob,
config: DownloaderConfig,
) -> Result<(), SpotifyError> {
// Fetch metadata
let track = self
.spotify
.spotify
.tracks()
.get_track(&job.track_id, None)
.await?
.data;
let album = self
.spotify
.spotify
.albums()
.get_album(&track.album.id.ok_or(SpotifyError::Unavailable)?, None)
.await?
.data;
// Generate path
let mut filename = config.filename_template.to_owned();
let tags: Vec<(&str, String)> = vec![
("%title%", sanitize(&track.name)),
(
"%artist%",
sanitize(
&track
.artists
.iter()
.map(|a| a.name.as_str())
.collect::<Vec<&str>>()
.first()
.unwrap_or(&""),
),
),
(
"%artists%",
sanitize(
&track
.artists
.iter()
.map(|a| a.name.as_str())
.collect::<Vec<&str>>()
.join(", "),
),
),
("%track%", track.track_number.to_string()),
("%0track%", format!("{:02}", track.track_number)),
("%disc%", track.disc_number.to_string()),
("%0disc%", format!("{:02}", track.disc_number)),
("%id%", job.track_id.to_string()),
("%album%", sanitize(&track.album.name)),
(
"%albumArtist%",
sanitize(
&track
.album
.artists
.iter()
.map(|a| a.name.as_str())
.collect::<Vec<&str>>()
.first()
.unwrap_or(&""),
),
),
(
"%albumArtists%",
sanitize(
&track
.album
.artists
.iter()
.map(|a| a.name.as_str())
.collect::<Vec<&str>>()
.join(", "),
),
),
];
for (t, v) in tags {
filename = filename.replace(t, &v);
}
let path = config.path.join(filename);
tokio::fs::create_dir_all(path.parent().unwrap()).await?;
// Download
let (path, format) = DownloaderInternal::download_track(
&self.spotify.session,
&job.track_id,
path,
config.clone(),
self.event_tx.clone(),
job.id,
)
.await?;
// Post processing
self.event_tx
.send(Message::UpdateState(job.id, DownloadState::Post))
.await
.ok();
// Download cover
let mut cover = None;
if let Some(image) = track.album.images.first() {
match DownloaderInternal::download_cover(&image.url).await {
Ok(c) => cover = Some(c),
Err(e) => warn!("Failed downloading cover! {}", e),
}
}
let tags = vec![
(Field::Title, vec![track.name.to_string()]),
(Field::Album, vec![track.album.name.to_string()]),
(
Field::Artist,
track
.artists
.iter()
.map(|a| a.name.to_string())
.collect::<Vec<String>>(),
),
(
Field::AlbumArtist,
track
.album
.artists
.iter()
.map(|a| a.name.to_string())
.collect::<Vec<String>>(),
),
(Field::TrackNumber, vec![track.track_number.to_string()]),
(Field::DiscNumber, vec![track.disc_number.to_string()]),
(Field::Genre, album.genres.clone()),
(Field::Label, vec![album.label.to_string()]),
];
let date = album.release_date;
// Write tags
let config = config.clone();
tokio::task::spawn_blocking(move || {
DownloaderInternal::write_tags(path, format, tags, date, cover, config)
})
.await??;
// Done
self.event_tx
.send(Message::UpdateState(job.id, DownloadState::Done))
.await
.ok();
Ok(())
}
/// Download cover, returns mime and data
async fn download_cover(url: &str) -> Result<(String, Vec<u8>), SpotifyError> {
let res = reqwest::get(url).await?;
let mime = res
.headers()
.get("content-type")
.ok_or(SpotifyError::Error("Missing cover mime!".into()))?
.to_str()
.unwrap()
.to_string();
let data = res.bytes().await?.to_vec();
Ok((mime, data))
}
/// Write tags to file ( BLOCKING )
fn write_tags(
path: impl AsRef<Path>,
format: AudioFormat,
tags: Vec<(Field, Vec<String>)>,
date: NaiveDate,
cover: Option<(String, Vec<u8>)>,
config: DownloaderConfig,
) -> Result<(), SpotifyError> {
let mut tag_wrap = TagWrap::new(path, format)?;
// Format specific
match &mut tag_wrap {
TagWrap::ID3(id3) => id3.use_id3_v24(config.id3v24),
_ => {}
}
let tag = tag_wrap.get_tag();
tag.set_separator(&config.separator);
for (field, value) in tags {
tag.set_field(field, value);
}
tag.set_release_date(date);
// Cover
if let Some((mime, data)) = cover {
tag.add_cover(&mime, data);
}
tag.save()?;
Ok(())
}
/// Download track by id
async fn download_track(
session: &Session,
id: &str,
path: impl AsRef<Path>,
config: DownloaderConfig,
tx: Sender<Message>,
job_id: i64,
) -> Result<(PathBuf, AudioFormat), SpotifyError> {
let id = SpotifyId::from_base62(id)?;
let track = Track::get(session, id).await?;
// Fallback if unavailable
if !track.available {
for alt in track.alternatives {
let t = Track::get(session, alt).await?;
if t.available {
break;
}
}
return Err(SpotifyError::Unavailable);
}
// Quality fallback
let mut quality = config.quality;
let (mut file_id, mut file_format) = (None, None);
'outer: loop {
for format in quality.get_file_formats() {
if let Some(f) = track.files.get(&format) {
info!("{} Using {:?} format.", id.to_base62(), format);
file_id = Some(f);
file_format = Some(format);
break 'outer;
}
}
// Fallback to worser quality
match quality.fallback() {
Some(q) => quality = q,
None => break,
}
warn!("{} Falling back to: {:?}", id.to_base62(), quality);
}
let file_id = file_id.ok_or(SpotifyError::Unavailable)?;
let file_format = file_format.unwrap();
// Path with extension
let mut audio_format: AudioFormat = file_format.into();
let path = format!(
"{}.{}",
path.as_ref().to_str().unwrap(),
match config.convert_to_mp3 {
true => "mp3".to_string(),
false => audio_format.extension(),
}
);
let path = Path::new(&path).to_owned();
let path_clone = path.clone();
let key = session.audio_key().request(track.id, *file_id).await?;
let encrypted = AudioFile::open(session, *file_id, 1024 * 1024, true).await?;
let size = encrypted.get_stream_loader_controller().len();
// Download
let s = match config.convert_to_mp3 {
true => {
let s = DownloaderInternal::download_track_convert_stream(
path_clone,
encrypted,
key,
audio_format.clone(),
quality,
)
.boxed();
audio_format = AudioFormat::MP3;
s
}
false => DownloaderInternal::download_track_stream(path_clone, encrypted, key).boxed(),
};
pin_mut!(s);
// Read progress
let mut read = 0;
while let Some(result) = s.next().await {
match result {
Ok(r) => {
read += r;
tx.send(Message::UpdateState(
job_id,
DownloadState::Downloading(read, size),
))
.await
.ok();
}
Err(e) => {
tokio::fs::remove_file(path).await.ok();
return Err(e);
}
}
}
info!("Done downloading: {}", track.id.to_base62());
Ok((path, audio_format))
}
fn download_track_stream(
path: impl AsRef<Path>,
encrypted: AudioFile,
key: AudioKey,
) -> impl Stream<Item = Result<usize, SpotifyError>> {
try_stream! {
let mut file = File::create(path).await?;
let mut decrypted = AudioDecrypt::new(key, encrypted);
// Skip (i guess encrypted shit)
let mut skip: [u8; 0xa7] = [0; 0xa7];
let mut decrypted = tokio::task::spawn_blocking(move || {
match decrypted.read_exact(&mut skip) {
Ok(_) => Ok(decrypted),
Err(e) => Err(e)
}
}).await??;
// Custom reader loop for decrypting
loop {
// Blocking reader
let (d, read, mut buf) = tokio::task::spawn_blocking(move || {
let mut buf = vec![0; 1024 * 64];
match decrypted.read(&mut buf) {
Ok(r) => Ok((decrypted, r, buf)),
Err(e) => Err(e)
}
}).await??;
decrypted = d;
if read == 0 {
break;
}
file.write_all(&mut buf[0..read]).await?;
yield read;
}
}
}
/// Download and convert to MP3
fn download_track_convert_stream(
path: impl AsRef<Path>,
encrypted: AudioFile,
key: AudioKey,
format: AudioFormat,
quality: Quality,
) -> impl Stream<Item = Result<usize, SpotifyError>> {
try_stream! {
let mut file = File::create(path).await?;
let mut decrypted = AudioDecrypt::new(key, encrypted);
// Skip (i guess encrypted shit)
let mut skip: [u8; 0xa7] = [0; 0xa7];
let decrypted = tokio::task::spawn_blocking(move || {
match decrypted.read_exact(&mut skip) {
Ok(_) => Ok(decrypted),
Err(e) => Err(e)
}
}).await??;
// Convertor
let mut decrypted = tokio::task::spawn_blocking(move || {
AudioConverter::new(Box::new(decrypted), format, quality)
}).await??;
// Custom reader loop for decrypting
loop {
// Blocking reader
let (d, read, mut buf) = tokio::task::spawn_blocking(move || {
let mut buf = vec![0; 1024 * 64];
match decrypted.read(&mut buf) {
Ok(r) => Ok((decrypted, r, buf)),
Err(e) => Err(e)
}
}).await??;
decrypted = d;
if read == 0 {
break;
}
file.write_all(&mut buf[0..read]).await?;
yield read;
}
}
}
}
#[derive(Debug, Clone)]
pub enum AudioFormat {
OGG,
AAC,
MP3,
MP4,
Unknown,
}
impl AudioFormat {
/// Get extension
pub fn extension(&self) -> String {
match self {
AudioFormat::OGG => "ogg",
AudioFormat::AAC => "m4a",
AudioFormat::MP3 => "mp3",
AudioFormat::MP4 => "mp4",
AudioFormat::Unknown => "",
}
.to_string()
}
}
impl From<FileFormat> for AudioFormat {
fn from(f: FileFormat) -> Self {
match f {
FileFormat::OGG_VORBIS_96 => Self::OGG,
FileFormat::OGG_VORBIS_160 => Self::OGG,
FileFormat::OGG_VORBIS_320 => Self::OGG,
FileFormat::MP3_256 => Self::MP3,
FileFormat::MP3_320 => Self::MP3,
FileFormat::MP3_160 => Self::MP3,
FileFormat::MP3_96 => Self::MP3,
FileFormat::MP3_160_ENC => Self::MP3,
FileFormat::MP4_128_DUAL => Self::MP4,
FileFormat::OTHER3 => Self::Unknown,
FileFormat::AAC_160 => Self::AAC,
FileFormat::AAC_320 => Self::AAC,
FileFormat::MP4_128 => Self::MP4,
FileFormat::OTHER5 => Self::Unknown,
}
}
}
impl Quality {
/// Get librespot FileFormat
pub fn get_file_formats(&self) -> Vec<FileFormat> {
match self {
Self::Q320 => vec![
FileFormat::OGG_VORBIS_320,
FileFormat::AAC_320,
FileFormat::MP3_320,
],
Self::Q256 => vec![FileFormat::MP3_256],
Self::Q160 => vec![
FileFormat::OGG_VORBIS_160,
FileFormat::AAC_160,
FileFormat::MP3_160,
],
Self::Q96 => vec![FileFormat::OGG_VORBIS_96, FileFormat::MP3_96],
}
}
/// Fallback to lower quality
pub fn fallback(&self) -> Option<Quality> {
match self {
Self::Q320 => Some(Quality::Q256),
Self::Q256 => Some(Quality::Q160),
Self::Q160 => Some(Quality::Q96),
Self::Q96 => None,
}
}
}
#[derive(Debug, Clone)]
pub struct DownloadJob {
pub id: i64,
pub track_id: String,
}
#[derive(Debug, Clone)]
pub enum Message {
// Send job to worker
GetJob,
// Update state of download
UpdateState(i64, DownloadState),
AddToQueue(Vec<Download>),
// Get all downloads to UI
GetDownloads,
}
#[derive(Debug, Clone)]
pub enum Response {
Downloads(Vec<Download>),
}
#[derive(Debug, Clone)]
pub struct Download {
pub id: i64,
pub track_id: String,
pub title: String,
pub subtitle: String,
pub state: DownloadState,
}
impl Into<Download> for aspotify::Track {
fn into(self) -> Download {
Download {
id: 0,
track_id: self.id.unwrap(),
title: self.name,
subtitle: self
.artists
.first()
.map(|a| a.name.to_owned())
.unwrap_or_default(),
state: DownloadState::None,
}
}
}
impl Into<Download> for aspotify::TrackSimplified {
fn into(self) -> Download {
Download {
id: 0,
track_id: self.id.unwrap(),
title: self.name,
subtitle: self
.artists
.first()
.map(|a| a.name.to_owned())
.unwrap_or_default(),
state: DownloadState::None,
}
}
}
impl Into<DownloadJob> for Download {
fn into(self) -> DownloadJob {
DownloadJob {
id: self.id,
track_id: self.track_id,
}
}
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum DownloadState {
None,
Lock,
Downloading(usize, usize),
Post,
Done,
Error(String),
}
/// Bitrate of music
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq, Copy)]
pub enum Quality {
Q320,
Q256,
Q160,
Q96,
}
impl ToString for Quality {
fn to_string(&self) -> String {
match self {
Quality::Q320 => "320kbps",
Quality::Q256 => "256kbps",
Quality::Q160 => "160kbps",
Quality::Q96 => "96kbps",
}
.to_string()
}
}
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct DownloaderConfig {
pub concurrent_downloads: usize,
pub quality: Quality,
pub path: PathBuf,
pub filename_template: String,
pub id3v24: bool,
pub convert_to_mp3: bool,
pub separator: String,
}

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use std::fmt;
#[derive(Debug, Clone)]
pub enum SpotifyError {
Error(String),
IoError(std::io::ErrorKind, String),
MercuryError,
AuthenticationError,
Unavailable,
SpotifyIdError,
ChannelError,
AudioKeyError,
LameConverterError(String),
JoinError,
ASpotify(String),
Serde(String, usize, usize),
InvalidUri,
ParseError(url::ParseError),
ID3Error(String, String),
Reqwest(String),
InvalidFormat,
}
impl std::error::Error for SpotifyError {}
impl fmt::Display for SpotifyError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
SpotifyError::Error(e) => write!(f, "Error: {}", e),
SpotifyError::MercuryError => write!(f, "Mercury Error"),
SpotifyError::IoError(kind, err) => write!(f, "IO: {:?} {}", kind, err),
SpotifyError::AuthenticationError => write!(f, "Authentication Error"),
SpotifyError::Unavailable => write!(f, "Unavailable!"),
SpotifyError::SpotifyIdError => write!(f, "Invalid Spotify ID"),
SpotifyError::ChannelError => write!(f, "Channel Error"),
SpotifyError::AudioKeyError => write!(f, "Audio Key Error"),
SpotifyError::LameConverterError(e) => write!(f, "Lame error: {}", e),
SpotifyError::JoinError => write!(f, "Tokio Join Error"),
SpotifyError::ASpotify(e) => write!(f, "Spotify Error: {}", e),
SpotifyError::Serde(e, l, c) => write!(f, "Serde Error @{}:{} {}", l, c, e),
SpotifyError::InvalidUri => write!(f, "Invalid URI"),
SpotifyError::ParseError(e) => write!(f, "Parse Error: {}", e),
SpotifyError::ID3Error(k, e) => write!(f, "ID3 Error: {} {}", k, e),
SpotifyError::Reqwest(e) => write!(f, "Reqwest Error: {}", e),
SpotifyError::InvalidFormat => write!(f, "Invalid Format!"),
}
}
}
impl From<std::io::Error> for SpotifyError {
fn from(e: std::io::Error) -> Self {
Self::IoError(e.kind(), e.to_string())
}
}
impl From<Box<dyn std::error::Error>> for SpotifyError {
fn from(e: Box<dyn std::error::Error>) -> Self {
Self::Error(e.to_string())
}
}
impl From<librespot::core::mercury::MercuryError> for SpotifyError {
fn from(_: librespot::core::mercury::MercuryError) -> Self {
Self::MercuryError
}
}
impl From<librespot::core::session::SessionError> for SpotifyError {
fn from(e: librespot::core::session::SessionError) -> Self {
match e {
librespot::core::session::SessionError::IoError(e) => e.into(),
librespot::core::session::SessionError::AuthenticationError(_) => {
SpotifyError::AuthenticationError
}
}
}
}
impl From<librespot::core::spotify_id::SpotifyIdError> for SpotifyError {
fn from(_: librespot::core::spotify_id::SpotifyIdError) -> Self {
Self::SpotifyIdError
}
}
impl From<librespot::core::channel::ChannelError> for SpotifyError {
fn from(_: librespot::core::channel::ChannelError) -> Self {
Self::ChannelError
}
}
impl From<librespot::core::audio_key::AudioKeyError> for SpotifyError {
fn from(_: librespot::core::audio_key::AudioKeyError) -> Self {
Self::AudioKeyError
}
}
impl From<tokio::task::JoinError> for SpotifyError {
fn from(_: tokio::task::JoinError) -> Self {
Self::JoinError
}
}
impl From<aspotify::Error> for SpotifyError {
fn from(e: aspotify::Error) -> Self {
Self::ASpotify(e.to_string())
}
}
impl From<serde_json::Error> for SpotifyError {
fn from(e: serde_json::Error) -> Self {
Self::Serde(e.to_string(), e.line(), e.column())
}
}
impl From<url::ParseError> for SpotifyError {
fn from(e: url::ParseError) -> Self {
Self::ParseError(e)
}
}
impl From<id3::Error> for SpotifyError {
fn from(e: id3::Error) -> Self {
Self::ID3Error(e.kind.to_string(), e.description.to_string())
}
}
impl From<reqwest::Error> for SpotifyError {
fn from(e: reqwest::Error) -> Self {
Self::Reqwest(e.to_string())
}
}
impl From<lewton::VorbisError> for SpotifyError {
fn from(e: lewton::VorbisError) -> Self {
SpotifyError::Error(format!("Lewton: {}", e))
}
}

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#[macro_use]
extern crate log;
mod converter;
mod downloader;
mod error;
mod settings;
mod spotify;
mod tag;
use async_std::{task, task::block_on};
use colored::Colorize;
use downloader::{DownloadState, Downloader};
use settings::Settings;
use spotify::Spotify;
use std::{
env,
ffi::OsStr,
path::Path,
time::{Duration, Instant},
};
fn main() {
block_on(start());
}
async fn start() {
let settings = match Settings::load().await {
Ok(settings) => {
println!(
"{} {}.",
"Settings successfully loaded. Continuing with spotify account:".green(),
settings.username
);
settings
}
Err(_e) => {
println!(
"{} {}...",
"Settings could not be loaded, because of the following error:".red(),
_e
);
let default_settings =
Settings::new("username", "password", "client_id", "secret").unwrap();
match default_settings.save().await {
Ok(_) => {
println!(
"{}",
"..but default settings have been created successfully. Edit them and run the program again.".green()
);
}
Err(_e) => {
println!(
"{} {}",
"..and default settings could not be written:".red(),
_e
);
}
};
return;
}
};
let args: Vec<String> = env::args().collect();
if args.len() > 1 {
let spotify = match Spotify::new(
&settings.username,
&settings.password,
&settings.client_id,
&settings.client_secret,
)
.await
{
Ok(spotify) => {
println!("{}", "Login succeeded.".green());
spotify
}
Err(_e) => {
println!(
"{} {}",
"Login failed, possibly due to invalid credentials or settings:".red(),
_e
);
return;
}
};
let downloader = Downloader::new(settings.downloader, spotify);
match downloader.add_uri(&args[1]).await {
Ok(_) => {}
Err(_e) => {
error!("{} {}", "Adding url failed:".red(), _e)
}
}
let refresh = Duration::from_secs(settings.refresh_ui_seconds);
let now = Instant::now();
let mut time_elapsed: u64;
'outer: loop {
print!("{esc}[2J{esc}[1;1H", esc = 27 as char);
let mut exit_flag: i8 = 1;
for download in downloader.get_downloads().await {
let state = download.state;
let progress: String;
if state != DownloadState::Done {
exit_flag &= 0;
progress = match state {
DownloadState::Downloading(r, t) => {
let p = r as f32 / t as f32 * 100.0;
if p > 100.0 {
"100%".to_string()
} else {
format!("{}%", p as i8)
}
}
DownloadState::Post => "Postprocessing... ".to_string(),
DownloadState::None => "Preparing... ".to_string(),
DownloadState::Lock => "Holding... ".to_string(),
DownloadState::Error(e) => {
exit_flag |= 1;
format!("{} ", e)
},
DownloadState::Done => {
exit_flag |= 1;
"Impossible state".to_string()
}
};
} else {
progress = "Done.".to_string();
}
println!("{:<19}| {}", progress, download.title);
}
time_elapsed = now.elapsed().as_secs();
if exit_flag == 1 {
break 'outer;
}
println!("\nElapsed second(s): {}", time_elapsed);
task::sleep(refresh).await
}
println!("Finished download(s) in {} second(s).", time_elapsed);
} else {
println!(
"Usage:\n{} (track_url | album_url | playlist_url)",
env::args()
.next()
.as_ref()
.map(Path::new)
.and_then(Path::file_name)
.and_then(OsStr::to_str)
.map(String::from)
.unwrap()
);
}
}

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use crate::downloader::DownloaderConfig;
use crate::downloader::Quality;
use crate::error::SpotifyError;
use serde::{Deserialize, Serialize};
use tokio::{
fs::File,
io::{AsyncReadExt, AsyncWriteExt},
};
// Structure for holding all the settings
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct Settings {
pub username: String,
pub password: String,
pub client_id: String,
pub client_secret: String,
pub refresh_ui_seconds: u64,
pub downloader: DownloaderConfig,
}
impl Settings {
// Create new instance
pub fn new(
username: &str,
password: &str,
client_id: &str,
client_secret: &str,
) -> Option<Settings> {
Some(Settings {
username: username.to_string(),
password: password.to_string(),
client_id: client_id.to_string(),
client_secret: client_secret.to_string(),
refresh_ui_seconds: 1,
downloader: DownloaderConfig {
concurrent_downloads: 4,
quality: Quality::Q320,
path: dirs::audio_dir().unwrap().join("downloads"),
filename_template: "%artist% - %title%".to_string(),
id3v24: true,
convert_to_mp3: false,
separator: ", ".to_string(),
},
})
}
// Serialize the settings to a json file
pub async fn save(&self) -> Result<(), SpotifyError> {
let data = serde_json::to_string_pretty(self)?;
let mut file = File::create("settings.json").await?;
file.write_all(data.as_bytes()).await?;
Ok(())
}
// Deserialize the settings from a json file
pub async fn load() -> Result<Settings, SpotifyError> {
let mut file = File::open("settings.json").await?;
let mut buf = String::new();
file.read_to_string(&mut buf).await?;
Ok(serde_json::from_str(&buf)?)
}
}

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use aspotify::{
Album, Client, ClientCredentials, Playlist, PlaylistItemType, Track, TrackSimplified,
};
use librespot::core::authentication::Credentials;
use librespot::core::config::SessionConfig;
use librespot::core::session::Session;
use std::fmt;
use url::Url;
use crate::error::SpotifyError;
pub struct Spotify {
// librespotify sessopm
pub session: Session,
pub spotify: Client,
}
impl Spotify {
/// Create new instance
pub async fn new(
username: &str,
password: &str,
client_id: &str,
client_secret: &str,
) -> Result<Spotify, SpotifyError> {
// librespot
let credentials = Credentials::with_password(username, password);
let session = Session::connect(SessionConfig::default(), credentials, None).await?;
//rspoitfy
let credentials = ClientCredentials {
id: client_id.to_string(),
secret: client_secret.to_string(),
};
let spotify = Client::new(credentials);
Ok(Spotify { session, spotify })
}
/// Parse URI or URL into URI
pub fn parse_uri(uri: &str) -> Result<String, SpotifyError> {
// Already URI
if uri.starts_with("spotify:") {
if uri.split(':').collect::<Vec<&str>>().len() < 3 {
return Err(SpotifyError::InvalidUri);
}
return Ok(uri.to_string());
}
// Parse URL
let url = Url::parse(uri)?;
// Spotify Web Player URL
if url.host_str() == Some("open.spotify.com") {
let path = url
.path_segments()
.ok_or(SpotifyError::Error("Missing URL path".into()))?
.collect::<Vec<&str>>();
if path.len() < 2 {
return Err(SpotifyError::InvalidUri);
}
return Ok(format!("spotify:{}:{}", path[0], path[1]));
}
Err(SpotifyError::InvalidUri)
}
/// Fetch data for URI
pub async fn resolve_uri(&self, uri: &str) -> Result<SpotifyItem, SpotifyError> {
let parts = uri.split(':').skip(1).collect::<Vec<&str>>();
let id = parts[1];
match parts[0] {
"track" => {
let track = self.spotify.tracks().get_track(id, None).await?;
Ok(SpotifyItem::Track(track.data))
}
"playlist" => {
let playlist = self.spotify.playlists().get_playlist(id, None).await?;
Ok(SpotifyItem::Playlist(playlist.data))
}
"album" => {
let album = self.spotify.albums().get_album(id, None).await?;
Ok(SpotifyItem::Album(album.data))
}
// Unsupported / Unimplemented
_ => Ok(SpotifyItem::Other(uri.to_string())),
}
}
/// Get all tracks from playlist
pub async fn full_playlist(&self, id: &str) -> Result<Vec<Track>, SpotifyError> {
let mut items = vec![];
let mut offset = 0;
loop {
let page = self
.spotify
.playlists()
.get_playlists_items(id, 100, offset, None)
.await?;
items.append(
&mut page
.data
.items
.iter()
.filter_map(|i| {
if let Some(item) = &i.item {
if let PlaylistItemType::Track(t) = item {
Some(t.to_owned())
} else {
None
}
} else {
None
}
})
.collect(),
);
// End
offset += page.data.items.len();
if page.data.total == offset {
return Ok(items);
}
}
}
/// Get all tracks from album
pub async fn full_album(&self, id: &str) -> Result<Vec<TrackSimplified>, SpotifyError> {
let mut items = vec![];
let mut offset = 0;
loop {
let page = self
.spotify
.albums()
.get_album_tracks(id, 50, offset, None)
.await?;
items.append(&mut page.data.items.to_vec());
// End
offset += page.data.items.len();
if page.data.total == offset {
return Ok(items);
}
}
}
}
impl Clone for Spotify {
fn clone(&self) -> Self {
Self {
session: self.session.clone(),
spotify: Client::new(self.spotify.credentials.clone()),
}
}
}
/// Basic debug implementation so can be used in other structs
impl fmt::Debug for Spotify {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "<Spotify Instance>")
}
}
#[derive(Debug, Clone)]
pub enum SpotifyItem {
Track(Track),
Album(Album),
Playlist(Playlist),
/// Unimplemented
Other(String),
}

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use chrono::{Datelike, NaiveDate};
use id3::frame::{Picture, PictureType, Timestamp};
use id3::{Tag, Version};
use std::path::{Path, PathBuf};
use crate::error::SpotifyError;
use super::Field;
pub struct ID3Tag {
path: PathBuf,
tag: Tag,
separator: String,
version: Version,
}
impl ID3Tag {
/// Load form path
pub fn open(path: impl AsRef<Path>) -> Result<ID3Tag, SpotifyError> {
let tag = Tag::read_from_path(&path).unwrap_or_default();
Ok(ID3Tag {
path: path.as_ref().to_owned(),
tag,
separator: String::new(),
version: Version::Id3v23,
})
}
/// Wether to use ID3v2.4
pub fn use_id3_v24(&mut self, v: bool) {
match v {
true => self.version = Version::Id3v24,
false => self.version = Version::Id3v23,
}
}
}
impl super::Tag for ID3Tag {
fn set_separator(&mut self, separator: &str) {
self.separator = separator.to_string();
}
fn set_raw(&mut self, tag: &str, value: Vec<String>) {
self.tag.set_text(tag, value.join(&self.separator));
}
fn set_field(&mut self, field: Field, value: Vec<String>) {
let tag = match field {
Field::Title => "TIT2",
Field::Artist => "TPE1",
Field::Album => "TALB",
Field::TrackNumber => "TPOS",
Field::DiscNumber => "TRCK",
Field::Genre => "TCON",
Field::Label => "TPUB",
Field::AlbumArtist => "TPE2",
};
self.set_raw(tag, value);
}
fn save(&mut self) -> Result<(), SpotifyError> {
Ok(self.tag.write_to_path(&self.path, self.version)?)
}
fn add_cover(&mut self, mime: &str, data: Vec<u8>) {
self.tag.add_picture(Picture {
mime_type: mime.to_owned(),
picture_type: PictureType::CoverFront,
description: "cover".to_string(),
data,
});
}
fn set_release_date(&mut self, date: NaiveDate) {
self.tag.set_date_recorded(Timestamp {
year: date.year(),
month: Some(date.month() as u8),
day: Some(date.day() as u8),
hour: None,
minute: None,
second: None,
})
}
}

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use chrono::NaiveDate;
use std::path::Path;
use crate::downloader::AudioFormat;
use crate::error::SpotifyError;
use self::id3::ID3Tag;
use ogg::OGGTag;
mod id3;
mod ogg;
pub enum TagWrap {
OGG(OGGTag),
ID3(ID3Tag),
}
impl TagWrap {
/// Load from file
pub fn new(path: impl AsRef<Path>, format: AudioFormat) -> Result<TagWrap, SpotifyError> {
match format {
AudioFormat::OGG => Ok(TagWrap::OGG(OGGTag::open(path)?)),
AudioFormat::MP3 => Ok(TagWrap::ID3(ID3Tag::open(path)?)),
_ => Err(SpotifyError::Error("Invalid format!".into())),
}
}
/// Get Tag trait
pub fn get_tag(&mut self) -> Box<&mut dyn Tag> {
match self {
TagWrap::OGG(tag) => Box::new(tag),
TagWrap::ID3(tag) => Box::new(tag),
}
}
}
pub trait Tag {
// Set tag values separator
fn set_separator(&mut self, separator: &str);
fn set_raw(&mut self, tag: &str, value: Vec<String>);
fn set_field(&mut self, field: Field, value: Vec<String>);
fn set_release_date(&mut self, date: NaiveDate);
fn add_cover(&mut self, mime: &str, data: Vec<u8>);
fn save(&mut self) -> Result<(), SpotifyError>;
}
#[derive(Debug, Clone)]
pub enum Field {
Title,
Artist,
Album,
TrackNumber,
DiscNumber,
AlbumArtist,
Genre,
Label,
}

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src/tag/ogg.rs Normal file
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use chrono::{Datelike, NaiveDate};
use oggvorbismeta::{read_comment_header, replace_comment_header, CommentHeader, VorbisComments};
use std::fs::File;
use std::path::{Path, PathBuf};
use super::Field;
use crate::error::SpotifyError;
pub struct OGGTag {
path: PathBuf,
tag: CommentHeader,
}
impl OGGTag {
/// Load tag from file
pub fn open(path: impl AsRef<Path>) -> Result<OGGTag, SpotifyError> {
let mut file = File::open(&path)?;
let tag = read_comment_header(&mut file);
Ok(OGGTag {
path: path.as_ref().to_owned(),
tag,
})
}
}
impl super::Tag for OGGTag {
fn set_separator(&mut self, _separator: &str) {}
fn set_field(&mut self, field: Field, value: Vec<String>) {
let tag = match field {
Field::Title => "TITLE",
Field::Artist => "ARTIST",
Field::Album => "ALBUM",
Field::TrackNumber => "TRACKNUMBER",
Field::DiscNumber => "DISCNUMBER",
Field::Genre => "GENRE",
Field::Label => "LABEL",
Field::AlbumArtist => "ALBUMARTIST",
};
self.set_raw(tag, value);
}
fn add_cover(&mut self, _mime: &str, _data: Vec<u8>) {
error!("ALBUM ART IN OGG NOT SUPPORTED!");
}
fn set_raw(&mut self, tag: &str, value: Vec<String>) {
self.tag.add_tag_multi(
tag,
&value.iter().map(|v| v.as_str()).collect::<Vec<&str>>(),
);
}
fn save(&mut self) -> Result<(), SpotifyError> {
let file = File::open(&self.path)?;
let mut out = replace_comment_header(file, self.tag.clone());
let mut file = File::create(&self.path)?;
std::io::copy(&mut out, &mut file)?;
Ok(())
}
fn set_release_date(&mut self, date: NaiveDate) {
self.tag.add_tag_single(
"DATE",
&format!("{}-{:02}-{:02}", date.year(), date.month(), date.day()),
)
}
}