fix: get steamvr bin dir by parsing libraryfolders.vdf

fixes #171

src/paths.rs

@@ -1,4 +1,6 @@
-use crate::{constants::CMD_NAME, xdg::XDG};
+use anyhow::bail;
+
+use crate::{constants::CMD_NAME, util::steam_library_folder::SteamLibraryFolder, xdg::XDG};
 use std::{
     env,
     fs::create_dir_all,
@@ -83,9 +85,24 @@ pub fn get_exec_prefix() -> PathBuf {
         .into()
 }
 
-pub fn get_steamvr_bin_dir_path() -> PathBuf {
+const STEAMVR_STEAM_APPID: u32 = 250820;
-    XDG.get_data_home()
+
-        .join("Steam/steamapps/common/SteamVR/bin/linux64")
+fn get_steamvr_base_dir() -> anyhow::Result<PathBuf> {
+    SteamLibraryFolder::get_folders()?
+        .into_iter()
+        .find(|(_, lf)| lf.apps.contains_key(&STEAMVR_STEAM_APPID))
+        .map(|(_, lf)| PathBuf::from(lf.path))
+        .ok_or(anyhow::Error::msg(
+            "Could not find SteamVR in Steam libraryfolders.vdf",
+        ))
+}
+
+pub fn get_steamvr_bin_dir_path() -> anyhow::Result<PathBuf> {
+    let res = get_steamvr_base_dir()?.join("bin/linux64");
+    if !res.is_dir() {
+        bail!("SteamVR bin dir `{}` does not exist", res.to_string_lossy());
+    }
+    Ok(res)
 }
 
 pub fn get_plugins_dir() -> PathBuf {

src/ui/steamvr_calibration_box.rs

@@ -10,7 +10,6 @@ use relm4::{
 };
 use std::{
     collections::{HashMap, VecDeque},
-    path::Path,
     thread::sleep,
     time::Duration,
 };
@@ -145,12 +144,14 @@ impl SimpleComponent for SteamVrCalibrationBox {
             }
             Self::Input::RunCalibration => {
                 self.set_calibration_result(None);
-                let steamvr_bin_dir = get_steamvr_bin_dir_path().to_string_lossy().to_string();
+                match get_steamvr_bin_dir_path() {
-                if !Path::new(&steamvr_bin_dir).is_dir() {
+                    Err(e) => {
+                        error!("could not get SteamVR bin dir: {e}");
                         self.set_calibration_success(false);
                         self.set_calibration_result(Some("SteamVR not found".into()));
-                    return;
                     }
+                    Ok(bin_dir_p) => {
+                        let steamvr_bin_dir = bin_dir_p.to_string_lossy().to_string();
                         let mut env: HashMap<String, String> = HashMap::new();
                         env.insert("LD_LIBRARY_PATH".into(), steamvr_bin_dir.clone());
                         let vrcmd = format!("{steamvr_bin_dir}/vrcmd");
@@ -191,6 +192,8 @@ impl SimpleComponent for SteamVrCalibrationBox {
                         self.server_worker = Some(server_worker);
                         self.calibration_worker = Some(cal_worker);
                     }
+                };
+            }
             Self::Input::OnServerWorkerExit(code) => {
                 if code != 0 {
                     error!("calibration exited with code {code}");