Add DNS discovery download

cmd/soundtouch-service/main.go

@@ -713,6 +713,7 @@ func setupRouter(server *handlers.Server) *chi.Mux {
 		r.Delete("/interactions/sessions", server.HandleCleanupSessions)
 
 		r.Get("/dns-discoveries", server.HandleGetDNSDiscoveries)
+		r.Get("/dns-discoveries/download", server.HandleDownloadDNSDiscoveries)
 		r.Delete("/dns-discoveries", server.HandleClearDNSDiscoveries)
 
 		r.Get("/devices/{deviceId}/events", server.HandleGetDeviceEvents)

pkg/service/handlers/handlers_setup.go

@@ -419,6 +419,32 @@ func (s *Server) HandleRevertMigration(w http.ResponseWriter, r *http.Request) {
 
 // HandleGetDNSDiscoveries returns recorded DNS discoveries.
 func (s *Server) HandleGetDNSDiscoveries(w http.ResponseWriter, _ *http.Request) {
+	result := s.getMergedDNSDiscoveries()
+
+	w.Header().Set("Content-Type", "application/json")
+
+	if err := json.NewEncoder(w).Encode(result); err != nil {
+		http.Error(w, "Failed to encode response", http.StatusInternalServerError)
+		return
+	}
+}
+
+// HandleDownloadDNSDiscoveries returns recorded DNS discoveries as a downloadable JSON file.
+func (s *Server) HandleDownloadDNSDiscoveries(w http.ResponseWriter, _ *http.Request) {
+	result := s.getMergedDNSDiscoveries()
+
+	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Content-Disposition", "attachment; filename=\"dns-discoveries.json\"")
+
+	encoder := json.NewEncoder(w)
+	encoder.SetIndent("", "  ")
+
+	if err := encoder.Encode(result); err != nil {
+		log.Printf("Error encoding DNS discoveries for download: %v", err)
+	}
+}
+
+func (s *Server) getMergedDNSDiscoveries() []datastore.DNSDiscoveryEntry {
 	// 1. Get current in-memory discoveries
 	inMemory := s.GetDNSDiscovery()
 
@@ -469,12 +495,7 @@ func (s *Server) HandleGetDNSDiscoveries(w http.ResponseWriter, _ *http.Request)
 		log.Printf("Warning: Failed to persist merged DNS discoveries: %v", err)
 	}
 
-	w.Header().Set("Content-Type", "application/json")
-
-	if err := json.NewEncoder(w).Encode(result); err != nil {
-		http.Error(w, "Failed to encode response", http.StatusInternalServerError)
-		return
-	}
+	return result
 }
 
 // HandleClearDNSDiscoveries clears recorded DNS discoveries.

pkg/service/handlers/web/index.html

@@ -406,7 +406,10 @@
             <div id="dns-discoveries" class="summary-box" style="margin-top: 20px;">
                 <div style="display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px;">
                     <h3 style="margin: 0;">DNS Discoveries</h3>
-                    <button onclick="clearDNSDiscoveries()" class="btn-danger">Clear DNS Logs</button>
+                    <div style="display: flex; gap: 10px;">
+                        <button onclick="downloadDNSDiscoveries()" class="btn-info">Download JSON</button>
+                        <button onclick="clearDNSDiscoveries()" class="btn-danger">Clear DNS Logs</button>
+                    </div>
                 </div>
                 <p style="font-size: 0.85em; color: #666;">Hosts discovered via the AfterTouch DNS server. "Self" means the domain was intercepted and redirected to this service.</p>
                 <div id="dns-discoveries-list-container" style="max-height: 400px; overflow-y: auto;">

pkg/service/handlers/web/js/script.js

@@ -585,6 +585,10 @@ async function clearDNSDiscoveries() {
     }
 }
 
+function downloadDNSDiscoveries() {
+    window.location.href = '/setup/dns-discoveries/download';
+}
+
 async function showDeviceEvents() {
     const overlay = document.getElementById('device-events-overlay');
     overlay.style.display = 'block';