Trying to add _ls and _tree subcalls to item paths..

server/handlers.go

@@ -22,8 +22,6 @@ import (
 	"kvs/utils"
 )
 
-
-
 // healthHandler returns server health status
 func (s *Server) healthHandler(w http.ResponseWriter, r *http.Request) {
 	mode := s.getMode()
@@ -1099,6 +1097,102 @@ func (s *Server) getSpecificRevisionHandler(w http.ResponseWriter, r *http.Reque
 	json.NewEncoder(w).Encode(storedValue)
 }
 
+// getKeyListHandler handles _ls endpoint for direct children
+func (s *Server) getKeyListHandler(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	path := "/" + vars["path"] // Ensure leading slash for consistency
+
+	// Parse query params
+	limitStr := r.URL.Query().Get("limit")
+	limit := 100 // Default
+	if limitStr != "" {
+		if l, err := strconv.Atoi(limitStr); err == nil && l > 0 && l <= 1000 {
+			limit = l
+		}
+	}
+	includeMetadata := r.URL.Query().Get("include_metadata") == "true"
+
+	mode := s.getMode()
+	if mode == "syncing" {
+		http.Error(w, "Service Unavailable", http.StatusServiceUnavailable)
+		return
+	}
+
+	keys, err := s.merkleService.GetKeysInPrefix(path, limit)
+	if err != nil {
+		s.logger.WithError(err).WithField("path", path).Error("Failed to get keys in prefix")
+		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+		return
+	}
+
+	response := KeyListResponse{
+		Path:     path,
+		Children: make([]struct{ Subkey string; Timestamp int64 }, len(keys)),
+		Total:    len(keys),
+	}
+
+	for i, subkey := range keys {
+		fullKey := path + subkey
+		if includeMetadata {
+			ts, err := s.merkleService.getTimestampForKey(fullKey)
+			if err == nil {
+				response.Children[i].Timestamp = ts
+			}
+		}
+		response.Children[i].Subkey = subkey
+	}
+
+	if len(keys) >= limit {
+		response.Truncated = true
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(response)
+}
+
+// getKeyTreeHandler handles _tree endpoint for recursive tree
+func (s *Server) getKeyTreeHandler(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	path := "/" + vars["path"]
+
+	// Parse query params
+	depthStr := r.URL.Query().Get("depth")
+	maxDepth := 0 // Unlimited
+	if depthStr != "" {
+		if d, err := strconv.Atoi(depthStr); err == nil && d > 0 {
+			maxDepth = d
+		}
+	}
+	limitStr := r.URL.Query().Get("limit")
+	limit := 500
+	if limitStr != "" {
+		if l, err := strconv.Atoi(limitStr); err == nil && l > 0 && l <= 5000 {
+			limit = l
+		}
+	}
+	includeMetadata := r.URL.Query().Get("include_metadata") == "true"
+
+	mode := s.getMode()
+	if mode == "syncing" {
+		http.Error(w, "Service Unavailable", http.StatusServiceUnavailable)
+		return
+	}
+
+	tree, err := s.merkleService.GetTreeForPrefix(path, maxDepth, limit)
+	if err != nil {
+		s.logger.WithError(err).WithField("path", path).Error("Failed to build tree")
+		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(tree)
+}
+
+
+
+
+
 // calculateHash computes SHA256 hash of data
 func calculateHash(data []byte) []byte {
 	h := sha256.New()