improve reliability and logging when running into game access denied issues

src/features/empty_session.rs

@@ -1,6 +1,7 @@
 use crate::util::{
     consts::game::{EXE_ENHANCED, EXE_LEGACY},
     countdown::Countdown,
+    log,
 };
 use std::time::{Duration, Instant};
 use sysinfo::System;
@@ -61,14 +62,22 @@ fn get_gta_pid(sysinfo: &mut System) -> Option<u32> {
     }
 }
 
-pub fn activate(game_handle: &mut HANDLE, sysinfo: &mut System) {
+pub fn activate(game_handle: &mut HANDLE, sysinfo: &mut System) -> Result<(), ()> {
     let Some(pid) = get_gta_pid(sysinfo) else {
-        return;
+        return Err(());
     };
     unsafe {
-        *game_handle = OpenProcess(PROCESS_SUSPEND_RESUME, false, pid).unwrap();
+        match OpenProcess(PROCESS_SUSPEND_RESUME, false, pid) {
+            Ok(handle) => *game_handle = handle,
+            Err(why) => {
+                let message = format!("failed to suspend game for empty session:\n{why}");
+                log::log(log::LogLevel::Error, &message);
+                return Err(());
+            }
+        }
         let _ = NtSuspendProcess(*game_handle);
     }
+    Ok(())
 }
 
 pub fn deactivate(game_handle: &mut HANDLE) {

src/features/force_close.rs

@@ -1,4 +1,7 @@
-use crate::util::consts::game::{EXE_ENHANCED, EXE_LEGACY};
+use crate::util::{
+    consts::game::{EXE_ENHANCED, EXE_LEGACY},
+    log,
+};
 use std::time::{Duration, Instant};
 use sysinfo::System;
 
@@ -58,7 +61,12 @@ fn activate(sysinfo: &mut System) {
         .iter()
         .filter(|(_, p)| p.name() == EXE_ENHANCED || p.name() == EXE_LEGACY)
         .for_each(|(_, p)| {
-            p.kill();
+            if p.kill() == false {
+                log::log(
+                    log::LogLevel::Error,
+                    "failed to force close game, probably due to access denied",
+                );
+            }
         });
     sysinfo.refresh_all();
 }

src/gui/app.rs

@@ -117,9 +117,12 @@ impl App {
         ui.add_enabled_ui(!self.empty_session.disabled, |ui| {
             ui.horizontal(|ui| {
                 if ui.button("Empty current session").clicked() {
+                    if features::empty_session::activate(&mut self.game_handle, &mut self.sysinfo)
+                        .is_ok()
+                    {
                         self.empty_session.interval = Instant::now();
                         self.empty_session.disabled = true;
-                    features::empty_session::activate(&mut self.game_handle, &mut self.sysinfo);
+                    }
                 }
                 ui.label(&self.empty_session.countdown.i_string);
             });