Blazor & WASM in combination to get statistics from Spotify API for performing the song analysis. With separate microservices for auth, Spotify, user data tracking, and application, connected through gRPC with Polly.
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  1. @page "/home"
  2. @using Grpc.Core
  3. @using GrpcShared.DTO
  4. @using GrpcShared.DTO.Track
  5. @using NemAnBlazor.Services.Interfaces
  6. @using System.Net
  7. @inject Blazored.LocalStorage.ILocalStorageService localStorage
  8. @inject IStatsClientService spotifyService
  9. @inject ITrackClientService trackService
  10. @inject IAuthClientService AuthService
  11. @inject IIdentityClientService identityService
  12. <h3>Home</h3>
  13. <p>login radi</p>
  14. @code {
  15. protected override async Task OnInitializedAsync()
  16. {
  17. CurrentTrackResponse track;
  18. string tokenS = await localStorage.GetItemAsync<string>("token");
  19. string refreshT = await localStorage.GetItemAsync<string>("refresh_token");
  20. //tokenS = "BQBMgFm6jnFNWWeZEMGIRP_f-ENPid7Kw8JubAyuWAe4JK0S1DPFGlaAdZ_Fey6ePkCnz8-cqC0oyRmrciWUy5ISUTQKDe8PTQn4iBRMYCgM0n4GnS1xAErHJcm4Vpu2TAngk-4vQUOfTQRcedNTfCaHKP4uFJgTlTI7JHGrtB-_EZLnFcZ2OQe31oFQIJ1wM3ZtvwnN";
  21. TokenMessage token = new TokenMessage { Token = tokenS, RefreshToken = refreshT };
  22. try
  23. {
  24. track = await spotifyService.GetCurrentlyPlayingTrack(token);
  25. //if token expired, refresh it
  26. if (track.ResponseMsg == System.Net.HttpStatusCode.Unauthorized)
  27. {
  28. string? tempToken = await SpotifyHelper.TryRefreshToken(AuthService, token, localStorage);
  29. tokenS = tempToken == null ? tokenS : tempToken;
  30. //if refreshed token is null, that means that refresh token was invalid, so you should redirect to login
  31. }
  32. }
  33. catch (RpcException e)
  34. {
  35. if (e.StatusCode == StatusCode.Cancelled)
  36. {
  37. return;
  38. }
  39. throw;
  40. }
  41. //napravi komponentu koja ce da prikazuje sta trenutno slusas i passuj joj parametre
  42. //var trackById = await trackService.GetById(new GrpcShared.DTO.TrackByID.TrackRequest { TrackID = "4fy1A2WBTPX55mUI16TQXa", Token = tokenS });
  43. try
  44. {
  45. var items = await spotifyService.GetTopItems(new GrpcShared.DTO.TopItem.TopItemRequest { Token = tokenS, IsTracks = false, Offset = 5 });
  46. if (items.ResponseMsg == System.Net.HttpStatusCode.Unauthorized)
  47. {
  48. string? tempToken = await SpotifyHelper.TryRefreshToken(AuthService, token, localStorage);
  49. tokenS = tempToken == null ? tokenS : tempToken;
  50. }
  51. }
  52. catch (RpcException e)
  53. {
  54. if (e.StatusCode == StatusCode.Cancelled)
  55. {
  56. return;
  57. }
  58. throw;
  59. }
  60. //await identityService.SaveUserAsync(new GrpcShared.DTO.Db.UserResponse
  61. // {
  62. // Token = tokenS
  63. // });
  64. await identityService.SaveTrackAsync(new GrpcShared.DTO.Db.SaveTrackRequest
  65. {
  66. TrackId = track.Item.Id,
  67. Title = track.Item.Name,
  68. Album = track.Item.Album.Name,
  69. Artist = track.Item.Artists[0].Name,
  70. UserId = "630748c8d149033aaf5a774a"
  71. });
  72. //var resp = await identityService.ListUsersAsync(new VoidMessage());
  73. //var tokenFromDb = await identityService.GetTokenByIdAsync(new GrpcShared.DTO.Db.DbRequestMessage
  74. // {
  75. // Id = "63074188426efd486fadd74d"
  76. // });
  77. //var trackByUser = await identityService.GetTrackByUserAsync(new GrpcShared.DTO.Db.DbRequestMessage
  78. // {
  79. // Id = "63074188426efd486fadd74d"
  80. // });
  81. //await identityService.DeleteTrackAsync(new GrpcShared.DTO.Db.DbRequestMessage
  82. // {
  83. // Id = "630743c91631901f903f9254"
  84. // });
  85. // await identityService.SaveTrackAsync(new GrpcShared.DTO.Db.SaveTrackRequest
  86. // {
  87. // TrackId = track.Item.Id,
  88. // Title = track.Item.Name,
  89. // Album = track.Item.Album.Name,
  90. // Artist = track.Item.Artists[0].Name,
  91. // UserId = "63074188426efd486fadd74d"
  92. // });
  93. //find id from local storage
  94. await identityService.DeleteUserAsync(new GrpcShared.DTO.Db.DbRequestMessage
  95. {
  96. Id = "630748c8d149033aaf5a774a"
  97. });
  98. }
  99. }