Fix parsing platform tag from CloudSmith package (#309)

***NO_CI***

Author: frobijn

nanoFirmwareFlasher.Library/CloudSmithPackageDetails.cs

@@ -1,4 +1,7 @@
-using System;
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -20,5 +23,10 @@ public class CloudSmithPackageDetail
         /// Package version.
         /// </summary>
         public string Version { get; set; }
+
+        /// <summary>
+        /// Platform code
+        /// </summary>
+        public string Platform { get; set; }
     }
 }

nanoFirmwareFlasher.Library/FirmwareArchiveManager.cs

@@ -187,7 +187,7 @@ public async Task<ExitCodes> DownloadFirmwareFromRepository(
                 {
                     IsPreview = preview,
                     Name = remoteTarget.Name,
-                    Platform = platform.ToString(),
+                    Platform = remoteTarget.Platform ?? platform?.ToString(),
                     Version = remoteTarget.Version,
                 };
                 File.WriteAllText(
@@ -209,11 +209,6 @@ public async Task<ExitCodes> DownloadFirmwareFromRepository(
         /// </summary>
         private sealed class PersistedPackageInformation : CloudSmithPackageDetail
         {
-            /// <summary>
-            /// Platform code
-            /// </summary>
-            public string Platform { get; set; }
-
             /// <summary>
             /// Indicates whether this is a preview
             /// </summary>

nanoFirmwareFlasher.Library/FirmwarePackage.cs

@@ -38,6 +38,7 @@ public abstract class FirmwarePackage : IDisposable
                     ".nanoFramework",
                     "fw_cache");
         private static readonly AsyncLocal<string> s_locationPathBase = new();
+        private static readonly HashSet<string> s_supportedPlatforms = new HashSet<string>(Enum.GetNames(typeof(SupportedPlatform)), StringComparer.OrdinalIgnoreCase);
 
         /// <summary>
         /// Path with the base location for firmware packages.
@@ -197,11 +198,32 @@ public static List<CloudSmithPackageDetail> GetTargetList(
                 return targetPackages;
             }
 
-            targetPackages = JsonConvert.DeserializeObject<List<CloudSmithPackageDetail>>(responseBody);
-
+            List<CloudSmithPackageDetailJson> deserializedPackages = JsonConvert.DeserializeObject<List<CloudSmithPackageDetailJson>>(responseBody);
+            targetPackages.AddRange(from p in deserializedPackages
+                                    select new CloudSmithPackageDetail()
+                                    {
+                                        Name = p.Name,
+                                        Version = p.Version,
+                                        Platform = p.Tags?.Info is null
+                                            ? null
+                                            : (from t in p.Tags.Info
+                                               where s_supportedPlatforms.Contains(t)
+                                               select t).FirstOrDefault(),
+                                    });
             return targetPackages;
         }
 
+        private sealed class CloudSmithPackageDetailJson : CloudSmithPackageDetail
+        {
+            public CloudSmithPackageDetailTagsJson Tags { get; set; }
+
+            public sealed class CloudSmithPackageDetailTagsJson
+            {
+                public List<string> Info { get; set; }
+            }
+        }
+
+
         /// <summary>
         /// Download the firmware zip, extract this zip file, and get the firmware parts
         /// </summary>