feat: integrate doublestar for enhanced file matching in content workflow

- Added the `doublestar` package to support recursive glob pattern matching in the `ContentWorkflowResults` function.
- Refactored file matching logic to utilize `findMatchingFiles`, improving the accuracy of file retrieval based on specified patterns.
- Updated `go.mod` and `go.sum` to include the new dependency.

These changes enhance the functionality of the content workflow by allowing for more flexible file matching capabilities.

Author: Gkrumbach07

components/backend/go.mod

@@ -16,6 +16,7 @@ require (
 )
 
 require (
+	github.com/bmatcuk/doublestar/v4 v4.9.1 // indirect
 	github.com/bytedance/sonic v1.13.3 // indirect
 	github.com/bytedance/sonic/loader v0.2.4 // indirect
 	github.com/cloudwego/base64x v0.1.5 // indirect

components/backend/go.sum

@@ -1,3 +1,5 @@
+github.com/bmatcuk/doublestar/v4 v4.9.1 h1:X8jg9rRZmJd4yRy7ZeNDRnM+T3ZfHv15JiBJ/avrEXE=
+github.com/bmatcuk/doublestar/v4 v4.9.1/go.mod h1:xBQ8jztBU6kakFMg+8WGxn0c6z1fTSPVIjEY1Wr7jzc=
 github.com/bytedance/sonic v1.13.3 h1:MS8gmaH16Gtirygw7jV91pDCN33NyMrPbN7qiYhEsF0=
 github.com/bytedance/sonic v1.13.3/go.mod h1:o68xyaF9u2gvVBuGHPlUVCy+ZfmNNO5ETf1+KgkJhz4=
 github.com/bytedance/sonic/loader v0.1.1/go.mod h1:ncP89zfokxS5LZrJxl5z0UJcsk4M4yY2JpfqGeCtNLU=

components/backend/handlers/content.go

@@ -15,6 +15,7 @@ import (
 
 	"ambient-code-backend/git"
 
+	"github.com/bmatcuk/doublestar/v4"
 	"github.com/gin-gonic/gin"
 )
 
@@ -675,18 +676,7 @@ func ContentWorkflowResults(c *gin.Context) {
 	results := []ResultFile{}
 
 	for displayName, pattern := range ambientConfig.Results {
-		absPattern := filepath.Join(workspaceBase, pattern)
-		matches, err := filepath.Glob(absPattern)
-
-		if err != nil {
-			results = append(results, ResultFile{
-				DisplayName: displayName,
-				Path:        pattern,
-				Exists:      false,
-				Error:       fmt.Sprintf("Invalid pattern: %v", err),
-			})
-			continue
-		}
+		matches := findMatchingFiles(workspaceBase, pattern)
 
 		if len(matches) == 0 {
 			results = append(results, ResultFile{
@@ -719,6 +709,25 @@ func ContentWorkflowResults(c *gin.Context) {
 	c.JSON(http.StatusOK, gin.H{"results": results})
 }
 
+// findMatchingFiles finds files matching a glob pattern with ** support for recursive matching
+func findMatchingFiles(baseDir, pattern string) []string {
+	// Use doublestar for glob matching with ** support
+	fsys := os.DirFS(baseDir)
+	matches, err := doublestar.Glob(fsys, pattern)
+	if err != nil {
+		log.Printf("findMatchingFiles: glob error for pattern %q: %v", pattern, err)
+		return []string{}
+	}
+
+	// Convert relative paths to absolute paths
+	var absolutePaths []string
+	for _, match := range matches {
+		absolutePaths = append(absolutePaths, filepath.Join(baseDir, match))
+	}
+
+	return absolutePaths
+}
+
 // findActiveWorkflowDir finds the active workflow directory for a session
 func findActiveWorkflowDir(sessionName string) string {
 	// Workflows are stored at {StateBaseDir}/sessions/{session-name}/workspace/workflows/{workflow-name}