feat: make onchain metadata type configurable for /assets/<id> endpoint

src/Blockfrost.Api/Models/Cardano/Assets/AssetResponse.cs

@@ -4,7 +4,7 @@
 //namespace Blockfrost.Api.Models.Cardano.Assets
 namespace Blockfrost.Api
 {
-    public partial class AssetResponse
+    public partial class AssetResponse<TMetadata>
     {
         /// <summary>Hex-encoded asset name of the asset</summary>
         [JsonPropertyName("asset_name")]
@@ -36,7 +36,7 @@ public partial class AssetResponse
         /// <br/>community discussion around the standard ongoing at https://github.com/cardano-foundation/CIPs/pull/85
         /// <br/></summary>
         [JsonPropertyName("onchain_metadata")]
-        public Onchain_metadata Onchain_metadata { get; set; }
+        public TMetadata Onchain_metadata { get; set; }
 
         /// <summary>Policy ID of the asset</summary>
         [JsonPropertyName("policy_id")]

src/Blockfrost.Api/Services/Cardano/AssetService.cs

@@ -66,17 +66,36 @@ public async Task<ICollection<AssetsResponse>> AssetsAll2Async(int? count, int?
         /// <param name="asset">Concatenation of the policy_id and hex-encoded asset_name</param>
         /// <returns>Return the information about a specific asset</returns>
         /// <exception cref="ApiException">A server side error occurred.</exception>
-        public Task<AssetResponse> AssetsAsync(string asset)
+        public Task<AssetResponse<Onchain_metadata>> AssetsAsync(string asset)
         {
-            return AssetsAsync(asset, CancellationToken.None);
+            return AssetsAsync<Onchain_metadata>(asset, CancellationToken.None);
         }
 
+        /// <summary>Specific asset</summary>
+        /// <param name="asset">Concatenation of the policy_id and hex-encoded asset_name</param>
         /// <param name="cancellationToken">A cancellation token that can be used by other objects or threads to receive notice of cancellation.</param>
+        /// <returns>Return the information about a specific asset</returns>
+        /// <exception cref="ApiException">A server side error occurred.</exception>
+        public Task<AssetResponse<Onchain_metadata>> AssetsAsync(string asset, CancellationToken cancellationToken)
+        {
+            return AssetsAsync<Onchain_metadata>(asset, cancellationToken);
+        }
+
         /// <summary>Specific asset</summary>
         /// <param name="asset">Concatenation of the policy_id and hex-encoded asset_name</param>
         /// <returns>Return the information about a specific asset</returns>
         /// <exception cref="ApiException">A server side error occurred.</exception>
-        public async Task<AssetResponse> AssetsAsync(string asset, CancellationToken cancellationToken)
+        public Task<AssetResponse<TMetadata>> AssetsAsync<TMetadata>(string asset)
+        {
+            return AssetsAsync<TMetadata>(asset, CancellationToken.None);
+        }
+
+        /// <summary>Specific asset</summary>
+        /// <param name="asset">Concatenation of the policy_id and hex-encoded asset_name</param>
+        /// <param name="cancellationToken">A cancellation token that can be used by other objects or threads to receive notice of cancellation.</param>
+        /// <returns>Return the information about a specific asset</returns>
+        /// <exception cref="ApiException">A server side error occurred.</exception>
+        public async Task<AssetResponse<TMetadata>> AssetsAsync<TMetadata>(string asset, CancellationToken cancellationToken)
         {
             if (asset == null)
             {
@@ -87,7 +106,7 @@ public async Task<AssetResponse> AssetsAsync(string asset, CancellationToken can
             _ = urlBuilder_.Append(BaseUrl != null ? BaseUrl.TrimEnd('/') : "").Append("/assets/{asset}");
             _ = urlBuilder_.Replace("{asset}", System.Uri.EscapeDataString(ConvertToString(asset, System.Globalization.CultureInfo.InvariantCulture)));
 
-            return await SendGetRequestAsync<AssetResponse>(urlBuilder_, cancellationToken);
+            return await SendGetRequestAsync<AssetResponse<TMetadata>>(urlBuilder_, cancellationToken);
         }
 
         /// <summary>Asset addresses</summary>

src/Blockfrost.Api/Services/IAssetService.cs

@@ -25,13 +25,25 @@ Task<ICollection<AssetsResponse>> AssetsAll2Async(int? count, int? page, ESortOr
         /// Use <see cref="IBlockfrostService.InserMethodName"/> instead
         /// </summary>
         //[System.Obsolete("Service methods without 'Get' prefix will be no longer supported. See comments for details.")]
-        Task<AssetResponse> AssetsAsync(string asset);
+        Task<AssetResponse<Onchain_metadata>> AssetsAsync(string asset);
 
         /// <summary>
         /// Use <see cref="IBlockfrostService.InserMethodName"/> instead
         /// </summary>
         //[System.Obsolete("Service methods without 'Get' prefix will be no longer supported. See comments for details.")]
-        Task<AssetResponse> AssetsAsync(string asset, CancellationToken cancellationToken);
+        Task<AssetResponse<Onchain_metadata>> AssetsAsync(string asset, CancellationToken cancellationToken);
+
+        /// <summary>
+        /// Use <see cref="IBlockfrostService.InserMethodName"/> instead
+        /// </summary>
+        //[System.Obsolete("Service methods without 'Get' prefix will be no longer supported. See comments for details.")]
+        Task<AssetResponse<TMetadata>> AssetsAsync<TMetadata>(string asset);
+
+        /// <summary>
+        /// Use <see cref="IBlockfrostService.InserMethodName"/> instead
+        /// </summary>
+        //[System.Obsolete("Service methods without 'Get' prefix will be no longer supported. See comments for details.")]
+        Task<AssetResponse<TMetadata>> AssetsAsync<TMetadata>(string asset, CancellationToken cancellationToken);
 
         /// <summary>
         /// Use <see cref="IBlockfrostService.InserMethodName"/> instead

test/Blockfrost.Api.Tests/Integration/AIntegrationTestsBase.cs

@@ -211,12 +211,12 @@ public Task<ICollection<StakeAddressAddressesAssetsResponse>> AssetsAllAsync(str
             return Accounts.AssetsAllAsync(stake_address, count, page, order, cancellationToken);
         }
 
-        public Task<AssetResponse> AssetsAsync(string asset)
+        public Task<AssetResponse<Onchain_metadata>> AssetsAsync(string asset)
         {
             return Assets.AssetsAsync(asset);
         }
 
-        public Task<AssetResponse> AssetsAsync(string asset, CancellationToken cancellationToken)
+        public Task<AssetResponse<Onchain_metadata>> AssetsAsync(string asset, CancellationToken cancellationToken)
         {
             return Assets.AssetsAsync(asset, cancellationToken);
         }