feat: add standalone server topology view

internal/server/topology_view.go

@@ -0,0 +1,43 @@
+package server
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"git.mchus.pro/mchus/logpile/internal/exporter"
+	"git.mchus.pro/mchus/logpile/internal/models"
+	"git.mchus.pro/mchus/logpile/internal/topology"
+)
+
+func currentTopologyDocument(result *models.AnalysisResult) (*models.TopologyDocument, error) {
+	if result == nil || result.Hardware == nil {
+		return &models.TopologyDocument{Version: topology.ContractVersion}, nil
+	}
+	snapshot, err := exporter.ConvertToReanimator(result)
+	if err != nil {
+		return nil, err
+	}
+	return topology.Build(snapshot, result.TopologyEvidence), nil
+}
+
+func (s *Server) handleTopologyCurrent(w http.ResponseWriter, r *http.Request) {
+	doc, err := currentTopologyDocument(s.GetResult())
+	if err != nil {
+		s.htmlError(w, "failed to build topology", http.StatusInternalServerError)
+		return
+	}
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	_, _ = w.Write(topology.RenderHTML(doc))
+}
+
+func (s *Server) handleGetTopology(w http.ResponseWriter, r *http.Request) {
+	doc, err := currentTopologyDocument(s.GetResult())
+	if err != nil {
+		jsonError(w, "Failed to build topology", http.StatusInternalServerError)
+		return
+	}
+	w.Header().Set("Content-Type", "application/json; charset=utf-8")
+	enc := json.NewEncoder(w)
+	enc.SetIndent("", "  ")
+	_ = enc.Encode(doc)
+}