[ci skip] more suggested improvements

server/handler/snapshots.go

@@ -2,7 +2,6 @@ package handler
 
 import (
 	"context"
-	"encoding/json"
 	"fmt"
 	"net/http"
 	"net/url"
@@ -62,24 +61,14 @@ func (h *Handler) SnapshotReportDownload(w http.ResponseWriter, r *http.Request)
 	ctx := context.Background()
 	tableName := r.URL.Query().Get("table")
 	if tableName == "" {
-		w.Header().Set("Content-Type", "application/json")
-		w.WriteHeader(http.StatusBadRequest)
-		json.NewEncoder(w).Encode(map[string]string{
-			"status":  "ERROR",
-			"message": "Missing table parameter",
-		})
+		writeJSONError(w, http.StatusBadRequest, "Missing table parameter")
 		return
 	}
 
 	reportData, err := report.CreateTableReport(h.Logger, h.Database, ctx, tableName)
 	if err != nil {
 		h.Logger.Error("Failed to create snapshot report", "error", err, "table", tableName)
-		w.Header().Set("Content-Type", "application/json")
-		w.WriteHeader(http.StatusInternalServerError)
-		json.NewEncoder(w).Encode(map[string]string{
-			"status":  "ERROR",
-			"message": fmt.Sprintf("Unable to create snapshot report: '%s'", err),
-		})
+		writeJSONError(w, http.StatusInternalServerError, fmt.Sprintf("Unable to create snapshot report: '%s'", err))
 		return
 	}