feat(ansible): skip get_url when destination exists

Co-Authored-By: Virgil <virgil@lethean.io>

modules.go

@@ -1401,8 +1401,19 @@ func (e *Executor) moduleGetURL(ctx context.Context, client sshExecutorClient, a
 		return nil, coreerr.E("Executor.moduleGetURL", "url and dest required", nil)
 	}
 
+	force := getBoolArg(args, "force", true)
 	checksumSpec := corexTrimSpace(getStringArg(args, "checksum", ""))
 
+	if !force {
+		exists, err := client.FileExists(ctx, dest)
+		if err != nil {
+			return nil, err
+		}
+		if exists {
+			return &TaskResult{Changed: false, Msg: sprintf("skipped existing destination: %s", dest)}, nil
+		}
+	}
+
 	// Stream to stdout so we can validate checksums before writing the file.
 	cmd := sprintf("curl -fsSL %q || wget -q -O - %q", url, url)
 	stdout, stderr, rc, err := client.Run(ctx, cmd)

modules_file_test.go

@@ -1675,6 +1675,23 @@ func TestModulesFile_ModuleGetURL_Good_ChecksumFileURL(t *testing.T) {
 	assert.Equal(t, []byte(payload), up.Content)
 }
 
+func TestModulesFile_ModuleGetURL_Good_ForceFalseSkipsExistingDestination(t *testing.T) {
+	e, mock := newTestExecutorWithMock("host1")
+	mock.addFile("/tmp/app.tgz", []byte("existing artifact"))
+
+	result, err := e.moduleGetURL(context.Background(), mock, map[string]any{
+		"url":   "https://downloads.example.com/app.tgz",
+		"dest":  "/tmp/app.tgz",
+		"force": false,
+	})
+
+	require.NoError(t, err)
+	assert.False(t, result.Changed)
+	assert.Equal(t, "skipped existing destination: /tmp/app.tgz", result.Msg)
+	assert.Equal(t, 0, mock.commandCount())
+	assert.Equal(t, 0, mock.uploadCount())
+}
+
 func TestModulesFile_ModuleGetURL_Bad_ChecksumMismatch(t *testing.T) {
 	e, mock := newTestExecutorWithMock("host1")
 	mock.expectCommand(`curl.*https://downloads\.example\.com/app\.tgz`, "downloaded artifact", "", 0)