platform: modularize api/gui, add docs-tests-web foundation, and refresh root config

selective-vpn-api/app/domains_handlers_smartdns.go

@@ -0,0 +1,44 @@
+package app
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+)
+
+// ---------------------------------------------------------------------
+// smartdns wildcards
+// ---------------------------------------------------------------------
+
+func handleSmartdnsWildcards(w http.ResponseWriter, r *http.Request) {
+	switch r.Method {
+	case http.MethodGet:
+		payload := struct {
+			Domains []string `json:"domains"`
+		}{Domains: readSmartDNSWildcardDomains()}
+		writeJSON(w, http.StatusOK, payload)
+	case http.MethodPost:
+		var payload struct {
+			Domains []string `json:"domains"`
+		}
+		if r.Body != nil {
+			defer r.Body.Close()
+			if err := json.NewDecoder(io.LimitReader(r.Body, 1<<20)).Decode(&payload); err != nil {
+				http.Error(w, "bad json", http.StatusBadRequest)
+				return
+			}
+		}
+		if err := saveSmartDNSWildcardDomainsState(payload.Domains); err != nil {
+			http.Error(w, "write error", http.StatusInternalServerError)
+			return
+		}
+		writeJSON(w, http.StatusOK, map[string]string{"status": "ok"})
+	default:
+		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
+	}
+}
+
+func readSmartDNSWildcardDomains() []string {
+	domains, _ := loadSmartDNSWildcardDomainsState(nil)
+	return domains
+}