feat(game): game uninstalling & partial compat

desktop/src-tauri/src/process/compat.rs

@@ -0,0 +1,51 @@
+use std::{
+    fs::create_dir_all,
+    path::PathBuf,
+    sync::atomic::{AtomicBool, Ordering},
+};
+
+use crate::db::DATA_ROOT_DIR;
+
+pub struct CompatibilityManager {
+    compat_tools_path: PathBuf,
+    prefixes_path: PathBuf,
+    created_paths: AtomicBool,
+}
+
+/*
+This gets built into both the Windows & Linux client, but
+we only need it in the Linux client. Therefore, it should
+do nothing but take a little bit of memory if we're on
+Windows.
+*/
+impl CompatibilityManager {
+    pub fn new() -> Self {
+        let root_dir_lock = DATA_ROOT_DIR.lock().unwrap();
+        let compat_tools_path = root_dir_lock.join("compatibility_tools");
+        let prefixes_path = root_dir_lock.join("prefixes");
+        drop(root_dir_lock);
+
+        Self {
+            compat_tools_path,
+            prefixes_path,
+            created_paths: AtomicBool::new(false),
+        }
+    }
+
+    fn ensure_paths_exist(&self) -> Result<(), String> {
+        if self.created_paths.fetch_and(true, Ordering::Relaxed) {
+            return Ok(());
+        }
+        if !self.compat_tools_path.exists() {
+            create_dir_all(self.compat_tools_path.clone()).map_err(|e| e.to_string())?;
+        }
+        if !self.prefixes_path.exists() {
+            create_dir_all(self.prefixes_path.clone()).map_err(|e| e.to_string())?;
+        }
+        self.created_paths.store(true, Ordering::Relaxed);
+
+        Ok(())
+    }
+
+    
+}