feat: discard changes support for SourceControlToolbarBottom (#1480)

* feat: `SourceControlToolbarBottom` discard changes dialog

* feat: discard all changes support for `GitClient`

* fix: swiftlint

* Update SourceControlToolbarBottom.swift

* fix: use `Discard All Changes` text

CodeEdit/Features/Git/Client/GitClient+Status.swift

@@ -38,4 +38,9 @@ extension GitClient {
     func discardChanges(for file: URL) async throws {
         _ = try await run("restore \(file.relativePath)")
     }
+
+    /// Discard unstaged changes
+    func discardAllChanges() async throws {
+        _ = try await run("restore .")
+    }
 }

CodeEdit/Features/Git/SourceControlManager.swift

@@ -152,6 +152,19 @@ final class SourceControlManager: ObservableObject {
         }
     }
 
+    /// Discard changes for repository
+    func discardAllChanges() {
+        Task {
+            do {
+                try await gitClient.discardAllChanges()
+                // TODO: Refresh content of active and unmodified document,
+                // requires CodeEditTextView changes
+            } catch {
+                await showAlertForError(title: "Failed to discard changes", error: error)
+            }
+        }
+    }
+
     /// Commit files selected by user
     func commit(message: String) async throws {
         var filesToCommit: [CEWorkspaceFile] = []

CodeEdit/Features/NavigatorArea/SourceControlNavigator/SourceControlToolbarBottom.swift

@@ -8,6 +8,8 @@
 import SwiftUI
 
 struct SourceControlToolbarBottom: View {
+    @EnvironmentObject private var workspace: WorkspaceDocument
+
     var body: some View {
         HStack(spacing: 0) {
             sourceControlMenu
@@ -23,8 +25,11 @@ struct SourceControlToolbarBottom: View {
 
     private var sourceControlMenu: some View {
         Menu {
-            Button("Discard Changes...") {}
-                .disabled(true) // TODO: Implementation Needed
+            Button("Discard All Changes...") {
+                if discardChangesDialog() {
+                    workspace.sourceControlManager?.discardAllChanges()
+                }
+            }
             Button("Stash Changes...") {}
                 .disabled(true) // TODO: Implementation Needed
             Button("Commit...") {}
@@ -38,4 +43,17 @@ struct SourceControlToolbarBottom: View {
         .menuIndicator(.hidden)
         .frame(maxWidth: 30)
     }
+
+    /// Renders a Discard Changes Dialog
+    func discardChangesDialog() -> Bool {
+        let alert = NSAlert()
+
+        alert.messageText = "Do you want to discard all uncommitted, local changes?"
+        alert.informativeText = "This operation cannot be undone."
+        alert.alertStyle = .warning
+        alert.addButton(withTitle: "Discard")
+        alert.addButton(withTitle: "Cancel")
+
+        return alert.runModal() == .alertFirstButtonReturn
+    }
 }