initial commit

This commit is contained in:
figsoda 2020-10-28 22:36:26 -04:00
parent 63e2fd5e96
commit 446a2edaa2
5 changed files with 846 additions and 2 deletions

453
Cargo.lock generated
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View file

@ -12,6 +12,14 @@ repository = "https://github.com/figsoda/mmtc"
readme = "README.md" readme = "README.md"
[dependencies] [dependencies]
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[profile.release] [profile.release]
lto = true lto = true

9
src/fail.rs Normal file
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@ -0,0 +1,9 @@
macro_rules! fail {
($n:ident $($a:ident)+ = $m:literal) => {
pub fn $n($( $a: impl std::fmt::Display ),+) -> impl FnOnce() -> String {
move || format!($m, $( $a ),+)
}
};
}
fail!(connect addr = "Failed to connect to {}");

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@ -1,3 +1,200 @@
fn main() { #![feature(async_closure)]
println!("Hello, world!"); #![forbid(unsafe_code)]
mod fail;
mod mpd;
use anyhow::{Context, Result};
use crossterm::{
event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode, KeyEvent},
execute,
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use tokio::{
sync::Mutex,
time::{sleep_until, Duration, Instant},
};
use tui::{
backend::CrosstermBackend,
layout::{Constraint, Direction, Layout, Rect},
widgets::{List, ListItem, Paragraph},
Terminal,
};
use std::{
io::{stdout, Write},
net::{IpAddr, Ipv4Addr, SocketAddr},
process::exit,
sync::Arc,
};
use crate::mpd::{Song, Status, Track};
fn cleanup() -> Result<()> {
disable_raw_mode().context("Failed to clean up terminal")?;
execute!(stdout(), LeaveAlternateScreen, DisableMouseCapture)
.context("Failed to clean up terminal")?;
Ok(())
}
fn die<T>(e: impl std::fmt::Display) -> T {
if let Err(e) = cleanup() {
eprintln!("{}", e);
};
eprintln!("{}", e);
exit(1);
}
#[tokio::main]
async fn main() -> Result<()> {
let res = run().await;
cleanup()?;
res
}
async fn run() -> Result<()> {
let addr = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 6600);
let queue_layout = Layout::default()
.direction(Direction::Horizontal)
.constraints(vec![
Constraint::Ratio(1, 3),
Constraint::Ratio(1, 3),
Constraint::Ratio(1, 3),
]);
let mut idle_cl = mpd::init(addr).await.with_context(fail::connect(addr))?;
let mut status_cl = mpd::init(addr).await.with_context(fail::connect(addr))?;
let queue = Arc::new(Mutex::new(mpd::queue(&mut idle_cl).await?));
let queue1 = Arc::clone(&queue);
let status = Arc::new(Mutex::new(mpd::status(&mut status_cl).await?));
let status1 = Arc::clone(&status);
tokio::spawn(async move {
loop {
mpd::idle_playlist(&mut idle_cl)
.await
.context("Failed to idle")
.unwrap_or_else(die);
*queue1.lock().await = mpd::queue(&mut idle_cl)
.await
.context("Failed to query queue information")
.unwrap_or_else(die);
}
});
tokio::spawn(async move {
loop {
let deadline = Instant::now() + Duration::from_millis(250);
*status1.lock().await = mpd::status(&mut status_cl)
.await
.context("Failed to query status")
.unwrap_or_else(die);
sleep_until(deadline).await;
}
});
let mut stdout = stdout();
enable_raw_mode().context("Failed to initialize terminal")?;
execute!(stdout, EnterAlternateScreen, EnableMouseCapture)
.context("Failed to initialize terminal")?;
let mut term =
Terminal::new(CrosstermBackend::new(stdout)).context("Failed to initialize terminal")?;
loop {
let deadline = Instant::now() + Duration::from_secs_f32(1.0 / 30.0);
let queue = &*queue.lock().await;
let status = (*status.lock().await).clone();
term.draw(|frame| {
let len = queue.len();
let mut titles = Vec::with_capacity(len);
let mut artists = Vec::with_capacity(len);
let mut albums = Vec::with_capacity(len);
for Track {
title,
artist,
album,
..
} in queue
{
titles.push(ListItem::new(title.clone().unwrap_or_default()));
artists.push(ListItem::new(artist.clone().unwrap_or_default()));
albums.push(ListItem::new(album.clone().unwrap_or_default()));
}
let Rect {
x,
y,
width,
height,
} = frame.size();
let chunks = queue_layout.split(Rect {
x,
y,
width,
height: y + height - 1,
});
frame.render_widget(List::new(titles), chunks[0]);
frame.render_widget(List::new(artists), chunks[1]);
frame.render_widget(List::new(albums), chunks[2]);
if let Status {
song: Some(Song { pos, elapsed }),
..
} = status
{
if let Some(Track {
file,
artist,
album,
title,
time,
}) = queue.get(pos)
{
frame.render_widget(
Paragraph::new(format!(
"[{:02}:{:02}/{:02}:{:02}] {}",
elapsed / 60,
elapsed % 60,
time / 60,
time % 60,
match (title, artist, album) {
(Some(title), Some(artist), Some(album)) =>
format!("{} - {} - {}", title, artist, album),
(Some(title), Some(artist), _) => format!("{} - {}", title, artist),
(Some(title), ..) => title.clone(),
_ => file.clone(),
}
)),
Rect {
x,
y: y + height - 1,
width,
height: 1,
},
)
}
}
})
.context("Failed to draw to terminal")?;
while event::poll(Duration::new(0, 0)).context("Failed to poll events")? {
match event::read().context("Failed to read events")? {
Event::Key(KeyEvent { code, .. }) => match code {
KeyCode::Char('q') | KeyCode::Esc => {
cleanup()?;
return Ok(());
}
_ => (),
},
_ => (),
}
}
sleep_until(deadline).await;
}
} }

177
src/mpd.rs Normal file
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@ -0,0 +1,177 @@
use anyhow::{bail, Context, Result};
use expand::expand;
use tokio::{
io::{AsyncBufReadExt, AsyncReadExt, AsyncWriteExt, BufReader},
net::TcpStream,
};
use std::net::SocketAddr;
use crate::fail;
pub type Client = BufReader<TcpStream>;
#[derive(Clone)]
pub struct Status {
pub repeat: bool,
pub random: bool,
pub single: Option<bool>, // None: oneshot
pub consume: bool,
pub song: Option<Song>,
}
#[derive(Clone)]
pub struct Song {
pub pos: usize,
pub elapsed: u16,
}
#[derive(Clone)]
pub struct Track {
pub file: String,
pub artist: Option<String>,
pub album: Option<String>,
pub title: Option<String>,
pub time: u16,
}
pub async fn init(addr: SocketAddr) -> Result<Client> {
let mut cl = BufReader::new(
TcpStream::connect(&addr)
.await
.with_context(fail::connect(addr))?,
);
let mut buf = [0; 7];
cl.read(&mut buf).await?;
if &buf != b"OK MPD " {
bail!("server did not greet with a success");
}
cl.read_line(&mut String::new()).await?;
Ok(cl)
}
pub async fn idle_playlist(cl: &mut Client) -> Result<()> {
cl.write_all(b"idle playlist\n").await?;
let mut lines = cl.lines();
while let Some(line) = lines.next_line().await? {
match line.as_bytes() {
b"OK" => break,
_ => continue,
}
}
Ok(())
}
pub async fn queue(cl: &mut Client) -> Result<Vec<Track>> {
let mut first = true;
let mut tracks = Vec::new();
let mut file = None;
let mut artist = None;
let mut album = None;
let mut title = None;
let mut time = None;
cl.write_all(b"playlistinfo\n").await?;
let mut lines = cl.lines();
while let Some(line) = lines.next_line().await? {
match line.as_bytes() {
b"OK" => break,
expand!([@b"file: ", xs @ ..]) => {
if first {
first = false;
} else {
if let (Some(file), Some(time)) = (file, time) {
tracks.push(Track {
file,
artist,
album,
title,
time,
});
} else {
bail!("incomplete playlist response");
}
}
file = Some(String::from_utf8_lossy(xs).into());
artist = None;
album = None;
title = None;
time = None;
}
expand!([@b"Artist: ", xs @ ..]) => {
artist = Some(String::from_utf8_lossy(xs).into());
}
expand!([@b"Album: ", xs @ ..]) => {
album = Some(String::from_utf8_lossy(xs).into());
}
expand!([@b"Title: ", xs @ ..]) => {
title = Some(String::from_utf8_lossy(xs).into());
}
expand!([@b"Time: ", xs @ ..]) => {
time = Some(String::from_utf8_lossy(xs).parse()?);
}
_ => continue,
}
}
Ok(tracks)
}
pub async fn status(cl: &mut Client) -> Result<Status> {
let mut repeat = None;
let mut random = None;
let mut single = None;
let mut consume = None;
let mut pos = None;
let mut elapsed = None;
cl.write_all(b"status\n").await?;
let mut lines = cl.lines();
while let Some(line) = lines.next_line().await? {
match line.as_bytes() {
b"OK" => break,
b"repeat: 0" => repeat = Some(false),
b"repeat: 1" => repeat = Some(true),
b"random: 0" => random = Some(false),
b"random: 1" => random = Some(true),
b"single: 0" => single = Some(Some(false)),
b"single: 1" => single = Some(Some(true)),
b"single: oneshot" => single = Some(None),
b"consume: 0" => consume = Some(false),
b"consume: 1" => consume = Some(true),
expand!([@b"song: ", xs @ ..]) => {
pos = Some(String::from_utf8_lossy(xs).parse()?);
}
expand!([@b"elapsed: ", xs @ ..]) => {
elapsed = Some(String::from_utf8_lossy(xs).parse::<f32>()?.round() as u16);
}
_ => continue,
}
}
if let (Some(repeat), Some(random), Some(single), Some(consume)) =
(repeat, random, single, consume)
{
Ok(Status {
repeat,
random,
single,
consume,
song: if let (Some(pos), Some(elapsed)) = (pos, elapsed) {
Some(Song { pos, elapsed })
} else {
None
},
})
} else {
bail!("incomplete status response");
}
}