refactor: Use `Result<>` return type for Linux checks (#21)

* refactor: Use result return type for Linux checks

* refactor: Store min required ldd version in const

This way we only need to update a single variable in case min required
version changes.

2 files changed, 19 insertions, 10 deletions

diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 6a44514d..c2007130 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -46,17 +46,25 @@ pub fn check_mod_version_number(path_to_mod_folder: String) -> Result<String, an
 // for now tho it only checks `ldd --version`
 // - salmon
 
-pub fn linux_checks_librs() -> bool {
-    let mut linux_compatible: bool = true; // a variable that starts true and will be set to false if any of the checks arent met
+pub fn linux_checks_librs() -> Result<(), String> {
+    // Perform various checks in terms of Linux compatibility
+    // Return early with error message if a check fails
 
     // check `ldd --version` to see if glibc is up to date for northstar proton
+    let min_required_ldd_version = 2.33;
     let lddv = linux::check_glibc_v();
-    if lddv < 2.33 { linux_compatible = false };
+    if lddv < min_required_ldd_version {
+        return Err(format!(
+            "GLIBC is not version {} or greater",
+            min_required_ldd_version
+        )
+        .to_string());
+    };
 
-    return linux_compatible;
+    // All checks passed
+    Ok(())
 }
 
-
 /// Attempts to find the game install location
 pub fn find_game_install_location() -> Result<GameInstall, anyhow::Error> {
     // Attempt parsing Steam library directly
diff --git a/src-tauri/src/main.rs b/src-tauri/src/main.rs
index a33f836c..411e75c9 100644
--- a/src-tauri/src/main.rs
+++ b/src-tauri/src/main.rs
@@ -120,12 +120,13 @@ fn is_debug_mode() -> bool {
 
 #[tauri::command]
 /// Returns true if linux compatible
-fn linux_checks() -> bool {
-    if get_host_os() == "windows" { 
-        false
-    } else {
-        linux_checks_librs()
+fn linux_checks() -> Result<(), String> {
+    // Early return if Windows
+    if get_host_os() == "windows" {
+        return Err("Not available on Windows".to_string());
     }
+
+    linux_checks_librs()
 }
 
 #[tauri::command]