add Repo Managment / Kontext Menu in Braches

src-tauri/src/git.rs

@@ -347,6 +347,42 @@ pub fn create_branch(
     status_for_repo(&repo)
 }
 
+#[tauri::command]
+pub fn rename_branch(
+    path: String,
+    old_branch: String,
+    new_branch: String,
+) -> Result<GitStatus, String> {
+    let repo = resolve_repo(&path)?;
+    let old_branch = validate_existing_local_branch_name(&repo, &old_branch)?;
+    let new_branch = validate_new_branch_name(&repo, &new_branch)?;
+
+    run_git(
+        &repo,
+        [
+            "branch",
+            "-m",
+            "--",
+            old_branch.as_str(),
+            new_branch.as_str(),
+        ],
+    )?;
+    status_for_repo(&repo)
+}
+
+#[tauri::command]
+pub fn delete_branch(path: String, branch: String) -> Result<GitStatus, String> {
+    let repo = resolve_repo(&path)?;
+    let branch = validate_existing_local_branch_name(&repo, &branch)?;
+    let status = status_for_repo(&repo)?;
+    if status.current_branch.as_deref() == Some(branch.as_str()) {
+        return Err("Der aktuelle Branch kann nicht geloescht werden.".to_string());
+    }
+
+    run_git(&repo, ["branch", "-d", "--", branch.as_str()])?;
+    status_for_repo(&repo)
+}
+
 #[tauri::command]
 pub fn stage_files(path: String, files: Vec<String>) -> Result<GitStatus, String> {
     let repo = resolve_repo(&path)?;
@@ -2103,6 +2139,41 @@ fn validate_new_branch_name(repo: &Path, branch: &str) -> Result<String, String>
     Ok(normalized)
 }
 
+fn validate_existing_local_branch_name(repo: &Path, branch: &str) -> Result<String, String> {
+    let branch = branch.trim();
+    if branch.is_empty() {
+        return Err("Branch-Name darf nicht leer sein.".to_string());
+    }
+
+    let normalized = validate_branch_ref_name(branch)?;
+    if !ref_exists(repo, &format!("refs/heads/{normalized}"))? {
+        return Err(format!(
+            "Lokaler Branch '{normalized}' wurde nicht gefunden."
+        ));
+    }
+
+    Ok(normalized)
+}
+
+fn validate_branch_ref_name(branch: &str) -> Result<String, String> {
+    let output = git_command()
+        .args(["check-ref-format", "--branch", branch])
+        .output()
+        .map_err(|err| format!("Git konnte nicht gestartet werden. Ist Git installiert? {err}"))?;
+
+    if !output.status.success() {
+        let details = command_output_details(&output);
+        return Err(format!("Ungueltiger Branch-Name: {details}"));
+    }
+
+    let normalized = String::from_utf8_lossy(&output.stdout).trim().to_string();
+    Ok(if normalized.is_empty() {
+        branch.to_string()
+    } else {
+        normalized
+    })
+}
+
 fn ref_exists(repo: &Path, ref_name: &str) -> Result<bool, String> {
     let output = git_command()
         .arg("-C")
@@ -3516,6 +3587,51 @@ mod tests {
         assert!(err.contains("existiert bereits"));
     }
 
+    #[test]
+    fn rename_branch_renames_existing_local_branch() {
+        let repo = init_temp_repo("rename_branch");
+        commit_initial_file(&repo.path);
+        let current = git_output_test(&repo.path, ["rev-parse", "--abbrev-ref", "HEAD"]);
+        run_git_test(&repo.path, ["branch", "feature/old-panel"]);
+
+        let status = rename_branch(
+            repo.path.to_string_lossy().to_string(),
+            "feature/old-panel".to_string(),
+            "feature/new-panel".to_string(),
+        )
+        .unwrap();
+
+        assert_eq!(status.current_branch.as_deref(), Some(current.as_str()));
+        assert!(
+            !ref_exists(&repo.path, "refs/heads/feature/old-panel").unwrap(),
+            "old branch should be gone"
+        );
+        assert!(
+            ref_exists(&repo.path, "refs/heads/feature/new-panel").unwrap(),
+            "new branch should exist"
+        );
+    }
+
+    #[test]
+    fn delete_branch_removes_local_branch_but_rejects_current_branch() {
+        let repo = init_temp_repo("delete_branch");
+        commit_initial_file(&repo.path);
+        let current = git_output_test(&repo.path, ["rev-parse", "--abbrev-ref", "HEAD"]);
+        run_git_test(&repo.path, ["branch", "stale"]);
+
+        let status =
+            delete_branch(repo.path.to_string_lossy().to_string(), "stale".to_string()).unwrap();
+
+        assert_eq!(status.current_branch.as_deref(), Some(current.as_str()));
+        assert!(
+            !ref_exists(&repo.path, "refs/heads/stale").unwrap(),
+            "deleted branch should be gone"
+        );
+
+        let err = delete_branch(repo.path.to_string_lossy().to_string(), current).unwrap_err();
+        assert!(err.contains("aktuelle Branch"));
+    }
+
     #[test]
     fn apply_file_patch_stages_and_discards_selected_changes() {
         let repo = init_temp_repo("apply_file_patch");