feat(tauri): add single instance plugin and improve code formatting

This update introduces the tauri-plugin-single-instance to ensure that
only one instance of the application can run at a time. Additionally,
the code has been reformatted for better readability, with consistent
line breaks and spacing.

- Added single instance plugin to prevent multiple app instances
- Improved code formatting for better readability and maintenance
- Updated dependencies in Cargo.toml for new plugin integration

src-tauri/Cargo.lock

@@ -2543,6 +2543,7 @@ dependencies = [
  "tauri-build",
  "tauri-plugin-aptabase",
  "tauri-plugin-dialog",
+ "tauri-plugin-single-instance",
  "tauri-plugin-updater",
  "tokio",
 ]
@@ -3420,7 +3421,7 @@ dependencies = [
  "security-framework 2.11.1",
  "security-framework 3.7.0",
  "windows-sys 0.60.2",
- "zbus",
+ "zbus 4.4.0",
  "zeroize",
 ]
 
@@ -5895,7 +5896,7 @@ dependencies = [
  "rand 0.8.6",
  "serde",
  "sha2",
- "zbus",
+ "zbus 4.4.0",
 ]
 
 [[package]]
@@ -7066,6 +7067,21 @@ dependencies = [
  "url",
 ]
 
+[[package]]
+name = "tauri-plugin-single-instance"
+version = "2.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c8f29386f5e9fdc699182388a33ee80a56de436d91b67459e86afef426282af"
+dependencies = [
+ "serde",
+ "serde_json",
+ "tauri",
+ "thiserror 2.0.18",
+ "tracing",
+ "windows-sys 0.60.2",
+ "zbus 5.17.0",
+]
+
 [[package]]
 name = "tauri-plugin-updater"
 version = "2.10.1"
@@ -9126,9 +9142,44 @@ dependencies = [
  "uds_windows",
  "windows-sys 0.52.0",
  "xdg-home",
- "zbus_macros",
+ "zbus_macros 4.4.0",
- "zbus_names",
+ "zbus_names 3.0.0",
- "zvariant",
+ "zvariant 4.2.0",
+]
+
+[[package]]
+name = "zbus"
+version = "5.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a28b97f866896a4be7aefd2b5a8e01bb6773d19a775d54ab28b4d094b9a4480e"
+dependencies = [
+ "async-broadcast",
+ "async-executor",
+ "async-io",
+ "async-lock",
+ "async-process",
+ "async-recursion",
+ "async-task",
+ "async-trait",
+ "blocking",
+ "enumflags2",
+ "event-listener",
+ "futures-core",
+ "futures-lite",
+ "hex",
+ "libc",
+ "ordered-stream",
+ "rustix",
+ "serde",
+ "serde_repr",
+ "tracing",
+ "uds_windows",
+ "uuid 1.23.4",
+ "windows-sys 0.61.2",
+ "winnow 1.0.3",
+ "zbus_macros 5.17.0",
+ "zbus_names 4.3.3",
+ "zvariant 5.13.0",
 ]
 
 [[package]]
@@ -9141,7 +9192,22 @@ dependencies = [
  "proc-macro2",
  "quote",
  "syn 2.0.118",
- "zvariant_utils",
+ "zvariant_utils 2.1.0",
+]
+
+[[package]]
+name = "zbus_macros"
+version = "5.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5e05ad887425eecf5e8384dc2406a4a9313eb73468712fc1cdea362eb4fe0469"
+dependencies = [
+ "proc-macro-crate 3.5.0",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.118",
+ "zbus_names 4.3.3",
+ "zvariant 5.13.0",
+ "zvariant_utils 3.5.0",
 ]
 
 [[package]]
@@ -9152,7 +9218,18 @@ checksum = "4b9b1fef7d021261cc16cba64c351d291b715febe0fa10dc3a443ac5a5022e6c"
 dependencies = [
  "serde",
  "static_assertions",
- "zvariant",
+ "zvariant 4.2.0",
+]
+
+[[package]]
+name = "zbus_names"
+version = "4.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1039ca249fee9559680f3a9f05b55e0761fee51af4f6c1e7d8c1f31e549721d2"
+dependencies = [
+ "serde",
+ "winnow 1.0.3",
+ "zvariant 5.13.0",
 ]
 
 [[package]]
@@ -9313,7 +9390,21 @@ dependencies = [
  "enumflags2",
  "serde",
  "static_assertions",
- "zvariant_derive",
+ "zvariant_derive 4.2.0",
+]
+
+[[package]]
+name = "zvariant"
+version = "5.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7cf057bb00bf5c9ad77abb6147b0ca4818236a1858416e9d988e40d6322fefa7"
+dependencies = [
+ "endi",
+ "enumflags2",
+ "serde",
+ "winnow 1.0.3",
+ "zvariant_derive 5.13.0",
+ "zvariant_utils 3.5.0",
 ]
 
 [[package]]
@@ -9326,7 +9417,20 @@ dependencies = [
  "proc-macro2",
  "quote",
  "syn 2.0.118",
- "zvariant_utils",
+ "zvariant_utils 2.1.0",
+]
+
+[[package]]
+name = "zvariant_derive"
+version = "5.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8118ca6bda77bfc0ab51d660db0c955f2505eef854c9a449435bccb616933b31"
+dependencies = [
+ "proc-macro-crate 3.5.0",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.118",
+ "zvariant_utils 3.5.0",
 ]
 
 [[package]]
@@ -9339,3 +9443,16 @@ dependencies = [
  "quote",
  "syn 2.0.118",
 ]
+
+[[package]]
+name = "zvariant_utils"
+version = "3.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "90cb9383f9b45290407a1258b202d3f8f01db719eb60b4e4055c6375af4fc7c7"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "serde",
+ "syn 2.0.118",
+ "winnow 1.0.3",
+]

src-tauri/Cargo.toml

@@ -26,6 +26,7 @@ tokio = "1.52.3"
 tauri-build = { version = "2", features = [] }
 
 [target.'cfg(not(any(target_os = "android", target_os = "ios")))'.dependencies]
+tauri-plugin-single-instance = "2"
 tauri-plugin-updater = "2"
 
 # ── Build profiles ───────────────────────────────────────────────────────────

src-tauri/src/git.rs

@@ -681,7 +681,14 @@ pub fn create_tag(
         Some(message) => {
             run_git(
                 &repo,
-                ["tag", "-a", name.as_str(), "-m", message.as_str(), target.as_str()],
+                [
+                    "tag",
+                    "-a",
+                    name.as_str(),
+                    "-m",
+                    message.as_str(),
+                    target.as_str(),
+                ],
             )?;
         }
         None => {
@@ -755,7 +762,11 @@ fn validate_existing_tag_name(repo: &Path, name: &str) -> Result<String, String>
 
 fn validate_tag_ref_name(name: &str) -> Result<String, String> {
     let output = git_command()
-        .args(["check-ref-format", "--allow-onelevel", &format!("refs/tags/{name}")])
+        .args([
+            "check-ref-format",
+            "--allow-onelevel",
+            &format!("refs/tags/{name}"),
+        ])
         .output()
         .map_err(|err| format!("Could not start Git. Is Git installed? {err}"))?;
 
@@ -1096,7 +1107,11 @@ pub fn last_commit_message(path: String) -> Result<Option<String>, String> {
 
     let output = run_git(&repo, ["log", "-1", "--format=%B", "HEAD"])?;
     let message = String::from_utf8_lossy(&output).trim_end().to_string();
-    Ok(if message.is_empty() { None } else { Some(message) })
+    Ok(if message.is_empty() {
+        None
+    } else {
+        Some(message)
+    })
 }
 
 #[tauri::command]
@@ -5544,7 +5559,8 @@ mod tests {
     fn get_file_blame_attributes_lines_to_the_commits_that_introduced_them() {
         let repo = init_temp_repo("file_blame");
         commit_initial_file(&repo.path);
-        fs::write(repo.path.join("old.txt"), "original\ntwo\n").expect("tracked file should change");
+        fs::write(repo.path.join("old.txt"), "original\ntwo\n")
+            .expect("tracked file should change");
         run_git_test(&repo.path, ["add", "old.txt"]);
         run_git_test(&repo.path, ["commit", "-q", "-m", "add second line"]);
 

src-tauri/src/main.rs

@@ -19,7 +19,7 @@ use git::{
     restore_to_commit, search_code_introductions, stage_files, stash_apply, stash_drop, stash_pop,
     stash_push, undo_last_commit, unstage_files,
 };
-use tauri::Manager;
+use tauri::{Manager, AppHandle};
 
 #[tauri::command]
 fn close_splashscreen(app: tauri::AppHandle) -> Result<(), String> {
@@ -43,13 +43,21 @@ fn close_splashscreen(app: tauri::AppHandle) -> Result<(), String> {
 #[tokio::main]
 async fn main() {
     tauri::Builder::default()
+        .plugin(tauri_plugin_single_instance::init(|app, _, _| {
+            #[cfg(desktop)]
+            let _ = app.get_webview_window("main")
+                .expect("no main window")
+                .set_focus();
+        }))
         .plugin(tauri_plugin_updater::Builder::new().build())
-        .plugin(tauri_plugin_aptabase::Builder::new("A-SH-1344793789").with_options(
+        .plugin(
-                tauri_plugin_aptabase::InitOptions {
+            tauri_plugin_aptabase::Builder::new("A-SH-1344793789")
+                .with_options(tauri_plugin_aptabase::InitOptions {
                     host: Some("https://aptabase.cbsk-tech.de".to_string()),
-                        flush_interval:None
+                    flush_interval: None,
-                }
+                })
-        ).build())
+                .build(),
+        )
         .manage(SearchCancellationState::default())
         .manage(commit_ai::CommitAiEngine::new())
         .plugin(tauri_plugin_dialog::init())