Add rog-control-center to the workspace

rog-control-center/src/lib.rs

@@ -0,0 +1,77 @@
+pub mod app;
+use std::{
+    fs::{remove_dir_all, File, OpenOptions},
+    io::{Read, Write},
+    process::exit,
+    thread::sleep,
+    time::Duration,
+};
+
+pub use app::RogApp;
+
+pub mod config;
+pub mod error;
+pub mod notify;
+pub mod page_states;
+pub mod widgets;
+
+use nix::{sys::stat, unistd};
+use tempfile::TempDir;
+//use log::{error, info, warn};
+
+pub const SHOWING_GUI: u8 = 1;
+pub const SHOW_GUI: u8 = 2;
+
+#[derive(PartialEq, Clone, Copy)]
+pub enum Page {
+    System,
+    AuraEffects,
+    AnimeMatrix,
+    FanCurves,
+}
+
+/// Either exit the process, or return with a refreshed tmp-dir
+pub fn on_tmp_dir_exists() -> Result<TempDir, std::io::Error> {
+    let mut buf = [0u8; 4];
+    let path = std::env::temp_dir().join("rog-gui");
+
+    let mut ipc_file = OpenOptions::new()
+        .read(true)
+        .write(true)
+        .create(false)
+        .open(path.join("ipc.pipe"))?;
+
+    // If the app is running this ends up stacked on top of SHOWING_GUI
+    ipc_file.write_all(&[SHOW_GUI])?;
+    // tiny sleep to give the app a chance to respond
+    sleep(Duration::from_millis(10));
+    ipc_file.read(&mut buf).ok();
+
+    // First entry is the actual state
+    if buf[0] == SHOWING_GUI {
+        ipc_file.write_all(&[SHOWING_GUI])?; // Store state again as we drained the fifo
+        exit(0);
+    } else if buf[0] == SHOW_GUI {
+        remove_dir_all(&path)?;
+        return tempfile::Builder::new()
+            .prefix("rog-gui")
+            .rand_bytes(0)
+            .tempdir();
+    }
+    exit(-1);
+}
+
+pub fn get_ipc_file() -> Result<File, crate::error::Error> {
+    let tmp_dir = std::env::temp_dir().join("rog-gui");
+    let fifo_path = tmp_dir.join("ipc.pipe");
+    if let Err(e) = unistd::mkfifo(&fifo_path, stat::Mode::S_IRWXU) {
+        if !matches!(e, nix::Error::Sys(nix::errno::Errno::EEXIST)) {
+            return Err(e)?;
+        }
+    }
+    Ok(OpenOptions::new()
+        .read(true)
+        .write(true)
+        .truncate(true)
+        .open(&fifo_path)?)
+}