Set default response if all calls fail

Author: TDroogers

README.md

@@ -62,7 +62,9 @@ example
         var cacheKey = "CACHE_KEY_HERE"
         var response = await storageService.CachedRequestAsync(cacheKey),
             async () => await apiClient.GetItemsAsync(),
-            new CachedRequest{CachedAndReplace = true}, clt);
+            new CachedRequest{CachedAndReplace = true},
+            new YourObjectResponse(),
+            clt);
         return response;
     }
 

Src/Drogecode.Blazor.ExpireStorage/Drogecode.Blazor.ExpireStorage.csproj

@@ -5,7 +5,7 @@
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
     <RootNamespace>Drogecode.Blazor.ExpireStorage</RootNamespace>
-    <Version>0.2.1</Version>
+    <Version>0.2.2</Version>
     <Title>Drogecode.Blazor.ExpireStorage</Title>
     <Authors>Taco Droogers</Authors>
     <PackageProjectUrl>https://github.com/Drogecode/Drogecode.Blazor.ExpireStorage</PackageProjectUrl>

Src/Drogecode.Blazor.ExpireStorage/Interfaces/IExpireStorageService.cs

@@ -4,6 +4,16 @@ namespace Drogecode.Blazor.ExpireStorage;
 
 public interface IExpireStorageService
 {
-    Task<TRes?> CachedRequestAsync<[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)] TRes>(string cacheKey, Func<Task<TRes>> function, CachedRequest? request = null, CancellationToken clt = default);
-
+    /// <summary>
+    /// Caches the request and returns the response.
+    /// </summary>
+    /// <param name="cacheKey">Uniek key for storage</param>
+    /// <param name="function">Function to run</param>
+    /// <param name="request">Object with configuration</param>
+    /// <param name="defaultResponse">Response if function fails</param>
+    /// <param name="clt">Cancelation token</param>
+    /// <typeparam name="TRes">Type of return object</typeparam>
+    /// <returns>Response from either function, cache, or default response</returns>
+    Task<TRes?> CachedRequestAsync<[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)] TRes>(string cacheKey, Func<Task<TRes>> function,
+        CachedRequest? request = null, TRes? defaultResponse = default, CancellationToken clt = default);
 }

Src/Drogecode.Blazor.ExpireStorage/Services/ExpireStorageService.cs

@@ -1,7 +1,6 @@
 using System.Diagnostics.CodeAnalysis;
 using System.Text.Json;
 using Drogecode.Blazor.ExpireStorage.Helpers;
-using Microsoft.AspNetCore.Components;
 
 namespace Drogecode.Blazor.ExpireStorage;
 
@@ -45,10 +44,12 @@ public ExpireStorageService(
         _sessionStorageExpireService = sessionStorageExpireService;
     }
 
+    
     public async Task<TRes?> CachedRequestAsync<[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)] TRes>(
         string cacheKey,
         Func<Task<TRes>> function,
         CachedRequest? request = null,
+        TRes? defaultResponse = default,
         CancellationToken clt = default)
     {
         request ??= new CachedRequest();
@@ -59,7 +60,7 @@ public ExpireStorageService(
                 cacheKey += $"__{Postfix}";
             }
 
-            if (clt.IsCancellationRequested) return default;
+            if (clt.IsCancellationRequested) return defaultResponse;
             if (request.CachedAndReplace && !(IsOffline && request.AlwaysCacheWhenOffline))
             {
                 var requestCopy = request;
@@ -114,7 +115,7 @@ public ExpireStorageService(
 
         if (request.IgnoreCache)
         {
-            return default(TRes);
+            return defaultResponse;
         }
 
         try
@@ -145,7 +146,7 @@ public ExpireStorageService(
             {
                 ConsoleHelper.WriteLine($"Retry calling {cacheKey}");
                 request.RetryOnJsonException = false;
-                return await CachedRequestAsync<TRes>(cacheKey, function, request, clt);
+                return await CachedRequestAsync(cacheKey, function, request, defaultResponse, clt);
             }
 
             ConsoleHelper.WriteLine($"Will not retry {cacheKey}");
@@ -155,7 +156,7 @@ public ExpireStorageService(
             ConsoleHelper.WriteLine(ex);
         }
 
-        return default(TRes);
+        return defaultResponse;
     }
 
     private async Task<TRes> RunSaveAndReturn<TRes>(string cacheKey, Func<Task<TRes>> function, CachedRequest request, CancellationToken clt)