adding secrets manager and startup

Mixonomer.Fire/Mixonomer.Fire.csproj

@@ -11,5 +11,6 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Google.Cloud.Firestore" Version="3.3.0" />
+    <PackageReference Include="Google.Cloud.SecretManager.V1" Version="2.1.0" />
   </ItemGroup>
 </Project>

Mixonomer.Func/RunUserPlaylist.cs

@@ -4,12 +4,16 @@ using System.Threading;
 using System.Threading.Tasks;
 using CloudNative.CloudEvents;
 using Google.Cloud.Functions.Framework;
+using Google.Cloud.Functions.Hosting;
 using Google.Events.Protobuf.Cloud.PubSub.V1;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Mixonomer.Fire;
 
 namespace Mixonomer.Func;
 
+[FunctionsStartup(typeof(RunUserPlaylistStartup))]
 public class RunUserPlaylist : ICloudEventFunction<MessagePublishedData>
 {
     private readonly ILogger _logger;
@@ -31,3 +35,13 @@ public class RunUserPlaylist : ICloudEventFunction<MessagePublishedData>
         _logger.LogInformation($"{user.username} was last refreshed at {user.last_refreshed}");
     }
 }
+
+public class RunUserPlaylistStartup : FunctionsStartup
+{
+    public override void ConfigureServices(WebHostBuilderContext context, IServiceCollection services)
+    {
+        base.ConfigureServices(context, services);
+
+        services.AddSecretManagerServiceClient();
+    }
+}

Mixonomer.Playlist/Mixonomer.Playlist.csproj

@@ -11,4 +11,8 @@
       <ProjectReference Include="..\Mixonomer.Fire\Mixonomer.Fire.csproj" />
     </ItemGroup>
 
+    <ItemGroup>
+      <PackageReference Include="SpotifyAPI.Web" Version="7.0.2" />
+    </ItemGroup>
+
 </Project>

Mixonomer.Playlist/SecretStrings.cs

@@ -0,0 +1,16 @@
+namespace Mixonomer.Playlist;
+
+public static class SecretStrings
+{
+    public static Lazy<string> GoogleProject = new(() => Environment.GetEnvironmentVariable("GOOGLE_CLOUD_PROJECT") ??
+                                                         throw new ArgumentException("no GOOGLE_CLOUD_PROJECT env variable available"));
+
+    public static string SPOT_CLIENT_URI => $"projects/{GoogleProject.Value}/secrets/spotify-client/versions/latest";
+    public static string SPOT_SECRET_URI => $"projects/{GoogleProject.Value}/secrets/spotify-secret/versions/latest";
+    public static string LASTFM_CLIENT_URI => $"projects/{GoogleProject.Value}/secrets/lastfm-client/versions/latest";
+    public static string JWT_SECRET_URI => $"projects/{GoogleProject.Value}/secrets/jwt-secret/versions/latest";
+    public static string COOKIE_SECRET_URI => $"projects/{GoogleProject.Value}/secrets/cookie-secret/versions/latest";
+    public static string APNS_SIGN_URI => $"projects/{GoogleProject.Value}/secrets/apns-auth-sign-key/versions/1";
+
+    public static string STATIC_BUCKET => $"{GoogleProject.Value}-static";
+}

Mixonomer.Playlist/SpotifyNetworkProvider.cs

@@ -0,0 +1,55 @@
+using Google.Cloud.SecretManager.V1;
+using Mixonomer.Fire;
+using SpotifyAPI.Web;
+
+namespace Mixonomer.Playlist;
+
+public class SpotifyNetworkProvider
+{
+    private readonly SecretManagerServiceClient _secretClient;
+    private readonly UserRepo _userRepo;
+
+    public SpotifyNetworkProvider(UserRepo userRepo, SecretManagerServiceClient secretClient)
+    {
+        _userRepo = userRepo;
+        _secretClient = secretClient ?? SecretManagerServiceClient.Create();
+    }
+
+    public async Task<SpotifyClientConfig> GetUserConfig(string username)
+    {
+        return await GetUserConfig(await _userRepo.GetUser(username));
+    }
+
+    public async Task<SpotifyClientConfig> GetUserConfig(User user)
+    {
+        var spotifyClient = await _secretClient.AccessSecretVersionAsync(SecretStrings.SPOT_CLIENT_URI);
+        var spotifySecret = await _secretClient.AccessSecretVersionAsync(SecretStrings.SPOT_SECRET_URI);
+
+        var spotifyClientStr = spotifyClient.Payload.Data.ToString() ?? throw new ArgumentException("No Spotify Client ID returned");
+        var spotifySecretStr = spotifySecret.Payload.Data.ToString() ?? throw new ArgumentException("No Spotify Secret ID returned");
+
+        var refreshed = await new OAuthClient()
+            .RequestToken(new AuthorizationCodeRefreshRequest(spotifyClientStr, spotifySecretStr, user.refresh_token));
+
+        var authenticator = new AuthorizationCodeAuthenticator(spotifyClientStr, spotifySecretStr, new()
+        {
+            AccessToken = refreshed.AccessToken,
+            TokenType = refreshed.TokenType,
+            ExpiresIn = refreshed.ExpiresIn,
+            Scope = refreshed.Scope,
+            RefreshToken = refreshed.RefreshToken ?? user.refresh_token,
+            CreatedAt = refreshed.CreatedAt
+        });
+
+        authenticator.TokenRefreshed += (sender, resp) =>
+        {
+            
+        };
+
+        var config = SpotifyClientConfig
+            .CreateDefault()
+            .WithAuthenticator(authenticator);
+
+        return config;
+    }
+}