set content-type for uploaded JSON files

src/SMAPI.Web/Controllers/JsonValidatorController.cs

@@ -170,7 +170,7 @@ internal class JsonValidatorController : Controller
 
         // upload file
         string id = Guid.NewGuid().ToString("N");
-        UploadResult result = await this.Storage.SaveAsync(id, input);
+        UploadResult result = await this.Storage.SaveAsync(id, input, "application/json");
         if (!result.Succeeded)
             return this.View("Index", this.GetModel(id, schemaName, isEditView: true).SetContent(input, null, null).SetUploadError(result.UploadError));
 

src/SMAPI.Web/Controllers/LogParserController.cs

@@ -135,7 +135,7 @@ internal class LogParserController : Controller
 
         // upload log
         string id = Guid.NewGuid().ToString("N");
-        UploadResult uploadResult = await this.Storage.SaveAsync($"parsed-{id}", JsonConvert.SerializeObject(log));
+        UploadResult uploadResult = await this.Storage.SaveAsync($"parsed-{id}", JsonConvert.SerializeObject(log), "application/json");
         if (!uploadResult.Succeeded)
             return this.View("Index", this.GetModel(null, uploadError: uploadResult.UploadError));
 

src/SMAPI.Web/Framework/Storage/IStorageProvider.cs

@@ -8,9 +8,10 @@ internal interface IStorageProvider
     /// <summary>Save a text file to storage.</summary>
     /// <param name="id">The ID with which to save the result.</param>
     /// <param name="content">The content to upload.</param>
+    /// <param name="contentType">The MIME content type being uploaded.</param>
     /// <param name="compress">Whether to gzip the text.</param>
     /// <returns>Returns metadata about the save attempt.</returns>
-    Task<UploadResult> SaveAsync(string id, string content, bool compress = true);
+    Task<UploadResult> SaveAsync(string id, string content, string contentType, bool compress = true);
 
     /// <summary>Fetch raw text from storage.</summary>
     /// <param name="id">The storage ID used to upload the file.</param>

src/SMAPI.Web/Framework/Storage/StorageProvider.cs

@@ -54,7 +54,7 @@ internal class StorageProvider : IStorageProvider
     }
 
     /// <inheritdoc />
-    public async Task<UploadResult> SaveAsync(string id, string content, bool compress = true)
+    public async Task<UploadResult> SaveAsync(string id, string content, string contentType, bool compress = true)
     {
         // save to Azure
         if (this.HasAzure)
@@ -63,7 +63,7 @@ internal class StorageProvider : IStorageProvider
             {
                 await using Stream stream = new MemoryStream(Encoding.UTF8.GetBytes(content));
                 BlobClient blob = this.GetAzureBlobClient(id);
-                await blob.UploadAsync(stream);
+                await blob.UploadAsync(stream, new BlobHttpHeaders { ContentType = contentType });
 
                 return new UploadResult(id, null);
             }