greg-ng/src/main.rs

185 lines
5.4 KiB
Rust

use anyhow::Context;
use axum::{Router, Server};
use clap::Parser;
use mpvipc_async::Mpv;
use std::{
fs::create_dir_all,
net::{IpAddr, SocketAddr},
path::Path,
};
use tokio::process::{Child, Command};
mod api;
#[derive(Parser)]
struct Args {
#[clap(long, default_value = "localhost")]
host: String,
#[clap(short, long, default_value = "8008")]
port: u16,
#[clap(long, value_name = "PATH", default_value = "/run/mpv/mpv.sock")]
mpv_socket_path: String,
#[clap(long, value_name = "PATH")]
mpv_executable_path: Option<String>,
#[clap(long, default_value = "true")]
auto_start_mpv: bool,
#[clap(long, default_value = "true")]
force_auto_start: bool,
}
struct MpvConnectionArgs {
socket_path: String,
executable_path: Option<String>,
auto_start: bool,
force_auto_start: bool,
}
async fn connect_to_mpv(args: &MpvConnectionArgs) -> anyhow::Result<(Mpv, Option<Child>)> {
log::debug!("Connecting to mpv");
debug_assert!(
!args.force_auto_start || args.auto_start,
"force_auto_start requires auto_start"
);
let socket_path = Path::new(&args.socket_path);
if !socket_path.exists() {
log::debug!("Mpv socket not found at {}", &args.socket_path);
if !args.auto_start {
panic!("Mpv socket not found at {}", &args.socket_path);
}
log::debug!("Ensuring parent dir of mpv socket exists");
let parent_dir = Path::new(&args.socket_path)
.parent()
.context("Failed to get parent dir of mpv socket")?;
if !parent_dir.is_dir() {
create_dir_all(parent_dir).context("Failed to create parent dir of mpv socket")?;
}
} else {
log::debug!("Existing mpv socket found at {}", &args.socket_path);
if args.force_auto_start {
log::debug!("Removing mpv socket");
std::fs::remove_file(&args.socket_path)?;
}
}
let process_handle = if args.auto_start {
log::info!("Starting mpv with socket at {}", &args.socket_path);
// TODO: try to fetch mpv from PATH
Some(
Command::new(args.executable_path.as_deref().unwrap_or("mpv"))
.arg(format!("--input-ipc-server={}", &args.socket_path))
.arg("--idle")
.arg("--force-window")
.arg("--fullscreen")
// .arg("--no-terminal")
.arg("--load-unsafe-playlists")
.arg("--keep-open") // Keep last frame of video on end of video
.spawn()
.context("Failed to start mpv")?,
)
} else {
None
};
// Wait for mpv to create the socket
if tokio::time::timeout(tokio::time::Duration::from_millis(500), async {
while !&socket_path.exists() {
log::debug!("Waiting for mpv socket at {}", &args.socket_path);
tokio::time::sleep(tokio::time::Duration::from_millis(10)).await;
}
})
.await
.is_err()
{
return Err(anyhow::anyhow!(
"Failed to connect to mpv socket: {}",
&args.socket_path
));
}
Ok((
Mpv::connect(&args.socket_path).await.context(format!(
"Failed to connect to mpv socket: {}",
&args.socket_path
))?,
process_handle,
))
}
async fn resolve(host: &str) -> anyhow::Result<IpAddr> {
let addr = format!("{}:0", host);
let addresses = tokio::net::lookup_host(addr).await?;
addresses
.into_iter()
.find(|addr| addr.is_ipv4())
.map(|addr| addr.ip())
.ok_or_else(|| anyhow::anyhow!("Failed to resolve address"))
}
#[tokio::main]
async fn main() -> anyhow::Result<()> {
env_logger::init();
let args = Args::parse();
let (mpv, proc) = connect_to_mpv(&MpvConnectionArgs {
socket_path: args.mpv_socket_path,
executable_path: args.mpv_executable_path,
auto_start: args.auto_start_mpv,
force_auto_start: args.force_auto_start,
})
.await?;
let addr = SocketAddr::new(resolve(&args.host).await?, args.port);
log::info!("Starting API on {}", addr);
let app = Router::new().nest("/api", api::rest_api_routes(mpv.clone()));
if let Some(mut proc) = proc {
tokio::select! {
exit_status = proc.wait() => {
log::warn!("mpv process exited with status: {}", exit_status?);
mpv.disconnect().await?;
}
_ = tokio::signal::ctrl_c() => {
log::info!("Received Ctrl-C, exiting");
mpv.disconnect().await?;
proc.kill().await?;
}
result = async {
match Server::try_bind(&addr.clone()).context("Failed to bind server") {
Ok(server) => server.serve(app.into_make_service()).await.context("Failed to serve app"),
Err(err) => Err(err),
}
} => {
log::info!("API server exited");
mpv.disconnect().await?;
proc.kill().await?;
result?;
}
}
} else {
tokio::select! {
_ = tokio::signal::ctrl_c() => {
log::info!("Received Ctrl-C, exiting");
mpv.disconnect().await?;
}
_ = Server::bind(&addr.clone()).serve(app.into_make_service()) => {
log::info!("API server exited");
mpv.disconnect().await?;
}
}
}
Ok(())
}