1  #pragma once
 2  
 3  #include <cstdint>
 4  #include <exception>
 5  #include <string>
 6  
 7  #include "winrt/Windows.Foundation.h"
 8  #include "winrt/Windows.Storage.Streams.h"
 9  #include "winrt/base.h"
10  
11  using namespace winrt::Windows;
12  using namespace winrt::Windows::Storage::Streams;
13  
14  constexpr uint32_t TEN_SECONDS_IN_MSECS = 10000;
15  
16  namespace ble_peripheral
17  {
18  
19      std::string _mac_address_to_str(uint64_t mac_address);
20      uint64_t _str_to_mac_address(std::string mac_address);
21  
22      winrt::guid uuid_to_guid(const std::string &uuid);
23      std::string guid_to_uuid(const winrt::guid &guid);
24  
25      std::vector<uint8_t> to_bytevc(IBuffer buffer);
26      IBuffer from_bytevc(std::vector<uint8_t> bytes);
27      std::string to_hexstring(std::vector<uint8_t> bytes);
28  
29      std::string to_lower_case(std::string str);
30  
31      std::string to_uuidstr(winrt::guid guid);
32  
33      /// To call async functions synchronously
34      template <typename async_t>
35      static auto async_get(async_t const &async)
36      {
37          if (async.Status() == Foundation::AsyncStatus::Started)
38          {
39              wait_for_completed(async, TEN_SECONDS_IN_MSECS);
40          }
41          try
42          {
43              return async.GetResults();
44          }
45          catch (const winrt::hresult_error &err)
46          {
47              throw FlutterError(winrt::to_string(err.message()));
48          }
49          catch (const std::exception &err)
50          {
51              throw FlutterError(err.what());
52          }
53          catch (...)
54          {
55              throw FlutterError("Unknown error");
56          }
57      }
58  
59  } // namespace ble_peripheral