applied platformio structure

lib/spotify/cspot/bell/main/platform/esp/MDNSService.cpp

@@ -0,0 +1,46 @@
+#include "MDNSService.h"
+#include <arpa/inet.h>
+#include <vector>
+#include "mdns.h"
+
+using namespace bell;
+
+class implMDNSService : public MDNSService {
+ private:
+  const std::string type;
+  const std::string proto;
+  void unregisterService() { mdns_service_remove(type.c_str(), proto.c_str()); }
+
+ public:
+  implMDNSService(std::string type, std::string proto)
+      : type(type), proto(proto){};
+};
+
+/**
+ * ESP32 implementation of MDNSService
+ * @see https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/protocols/mdns.html
+ **/
+
+std::unique_ptr<MDNSService> MDNSService::registerService(
+    const std::string& serviceName, const std::string& serviceType,
+    const std::string& serviceProto, const std::string& serviceHost,
+    int servicePort, const std::map<std::string, std::string> txtData) {
+  std::vector<mdns_txt_item_t> txtItems;
+  txtItems.reserve(txtData.size());
+  for (auto& data : txtData) {
+    mdns_txt_item_t item;
+    item.key = data.first.c_str();
+    item.value = data.second.c_str();
+    txtItems.push_back(item);
+  }
+
+  mdns_service_add(serviceName.c_str(),  /* instance_name */
+                   serviceType.c_str(),  /* service_type */
+                   serviceProto.c_str(), /* proto */
+                   servicePort,          /* port */
+                   txtItems.data(),      /* txt */
+                   txtItems.size()       /* num_items */
+  );
+
+  return std::make_unique<implMDNSService>(serviceType, serviceProto);
+}