From 96e4aeaf83adbfe7349cb6f0185d6a72c4cb225a Mon Sep 17 00:00:00 2001
From: Yunus Emre Kalkan <emre.kalkan@volosoft.com>
Date: Tue, 21 Dec 2021 14:16:06 +0300
Subject: [PATCH] When IWebHostEnvironment is not injected,
 hostGetHostingEnvironment now returns an empty one instead of throwing
 exception

---
 ...bpAspNetCoreServiceCollectionExtensions.cs | 12 +++++++++++-
 .../EmptyHostingEnvironment.cs                | 19 +++++++++++++++++++
 2 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100644 framework/src/Volo.Abp.AspNetCore/Microsoft/Extensions/DependencyInjection/EmptyHostingEnvironment.cs

diff --git a/framework/src/Volo.Abp.AspNetCore/Microsoft/Extensions/DependencyInjection/AbpAspNetCoreServiceCollectionExtensions.cs b/framework/src/Volo.Abp.AspNetCore/Microsoft/Extensions/DependencyInjection/AbpAspNetCoreServiceCollectionExtensions.cs
index 33e685ac4e..d672952b09 100644
--- a/framework/src/Volo.Abp.AspNetCore/Microsoft/Extensions/DependencyInjection/AbpAspNetCoreServiceCollectionExtensions.cs
+++ b/framework/src/Volo.Abp.AspNetCore/Microsoft/Extensions/DependencyInjection/AbpAspNetCoreServiceCollectionExtensions.cs
@@ -1,4 +1,6 @@
-using Microsoft.AspNetCore.Hosting;
+using System.Linq;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Hosting;
 
 namespace Microsoft.Extensions.DependencyInjection
 {
@@ -6,6 +8,14 @@ namespace Microsoft.Extensions.DependencyInjection
     {
         public static IWebHostEnvironment GetHostingEnvironment(this IServiceCollection services)
         {
+            if (!services.Any(d => d.ServiceType == typeof(IWebHostEnvironment)))
+            {
+                return new EmptyHostingEnvironment()
+                {
+                    EnvironmentName = Environments.Development
+                };
+            }
+
             return services.GetSingletonInstance<IWebHostEnvironment>();
         }
     }
diff --git a/framework/src/Volo.Abp.AspNetCore/Microsoft/Extensions/DependencyInjection/EmptyHostingEnvironment.cs b/framework/src/Volo.Abp.AspNetCore/Microsoft/Extensions/DependencyInjection/EmptyHostingEnvironment.cs
new file mode 100644
index 0000000000..371162f0da
--- /dev/null
+++ b/framework/src/Volo.Abp.AspNetCore/Microsoft/Extensions/DependencyInjection/EmptyHostingEnvironment.cs
@@ -0,0 +1,19 @@
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.FileProviders;
+
+namespace Microsoft.Extensions.DependencyInjection;
+
+internal class EmptyHostingEnvironment : IWebHostEnvironment
+{
+    public string EnvironmentName { get; set; }
+
+    public string ApplicationName { get; set; }
+
+    public string WebRootPath { get; set; }
+
+    public IFileProvider WebRootFileProvider { get; set; }
+
+    public string ContentRootPath { get; set; }
+
+    public IFileProvider ContentRootFileProvider { get; set; }
+}
\ No newline at end of file