Update sample

Author: JannikLassahn

samples/FileUploadSample/SampleSchema.cs

@@ -1,8 +1,10 @@
-
-using GraphQL;
+using GraphQL;
 using GraphQL.Types;
 using GraphQL.Upload.AspNetCore;
 using Microsoft.AspNetCore.Http;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
 
 namespace FileUploadSample
 {
@@ -11,24 +13,22 @@ public class SampleSchema : Schema
         public SampleSchema(IDependencyResolver resolver)
             : base(resolver)
         {
-            RegisterValueConverter(new FormFileConverter());
-
             Query = resolver.Resolve<Query>();
             Mutation = resolver.Resolve<Mutation>();
         }
     }
 
     public class Query : ObjectGraphType
     {
-        public Query()
+        public Query(UploadRepository uploads)
         {
-            Field<StringGraphType>("hello", resolve: ctx => "hi :)");
+            Field<ListGraphType<FileGraphType>>("uploads", resolve: ctx => uploads.Files);
         }
     }
 
     public class Mutation : ObjectGraphType
     {
-        public Mutation()
+        public Mutation(UploadRepository uploads)
         {
             Field<FileGraphType>(
                 "singleUpload",
@@ -37,24 +37,37 @@ public Mutation()
                 resolve: context =>
                 {
                     var file = context.GetArgument<IFormFile>("file");
-                    return new File { Name = file.FileName, ContentType = file.ContentType };
+                    return uploads.Save(file);
                 });
-        }
 
+            Field<ListGraphType<FileGraphType>>(
+                "multipleUpload",
+                arguments: new QueryArguments(
+                    new QueryArgument<ListGraphType<UploadGraphType>> { Name = "files" }),
+                resolve: context =>
+                {
+                    var files = context.GetArgument<IEnumerable<IFormFile>>("files");
+                    return Task.WhenAll(files.Select(file => uploads.Save(file)));
+                });
+        }
     }
 
     public class File
     {
+        public string Id { get; set; }
         public string Name { get; set; }
-        public string ContentType { get; set; }
+        public string MimeType { get; set; }
+        public string Path { get; set; }
     }
 
     public class FileGraphType : ObjectGraphType<File>
     {
         public FileGraphType()
         {
-            Field(f => f.Name);
-            Field(f => f.ContentType);
+            Field(f => f.Id).Name("id");
+            Field(f => f.Name).Name("filename");
+            Field(f => f.MimeType).Name("mimetype");
+            Field(f => f.Path).Name("path");
         }
     }
 }

samples/FileUploadSample/Startup.cs

@@ -12,6 +12,8 @@ public class Startup
     {
         public void ConfigureServices(IServiceCollection services)
         {
+            services.AddSingleton<UploadRepository>();
+
             services.AddSingleton<IDependencyResolver>(s => new FuncDependencyResolver(s.GetRequiredService));
 
             services.AddSingleton<ISchema, SampleSchema>();
@@ -24,6 +26,8 @@ public void ConfigureServices(IServiceCollection services)
             {
                 _.ExposeExceptions = true;
             });
+
+            services.AddCors();
         }
 
         public void Configure(IApplicationBuilder app, IHostingEnvironment env)
@@ -33,6 +37,13 @@ public void Configure(IApplicationBuilder app, IHostingEnvironment env)
                 app.UseDeveloperExceptionPage();
             }
 
+            app.UseStaticFiles();
+
+            app.UseCors(b => b
+                .AllowAnyOrigin()
+                .AllowAnyMethod()
+                .AllowAnyHeader());
+
             // register the middleware that can handle multipart requests first
             app.UseGraphQLUpload<ISchema>();
 

samples/FileUploadSample/UploadRepository.cs

@@ -0,0 +1,47 @@
+using Microsoft.AspNetCore.Http;
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.IO;
+using System.Threading.Tasks;
+
+namespace FileUploadSample
+{
+    public class UploadRepository
+    {
+        private readonly ConcurrentBag<File> _files;
+        private readonly string _uploadDirectory;
+
+        public UploadRepository()
+        {
+            _files = new ConcurrentBag<File>();
+            _uploadDirectory = Path.Combine(Directory.GetCurrentDirectory(), "uploads");
+            Directory.CreateDirectory(_uploadDirectory);
+        }
+
+        public async Task<File> Save(IFormFile formFile)
+        {
+            var id = Guid.NewGuid().ToString().Substring(0, 8);
+            var path = Path.Combine(_uploadDirectory, id + Path.GetExtension(formFile.FileName));
+
+            using (var fs = formFile.OpenReadStream())
+            using (var ws = System.IO.File.Create(path))
+            {
+                await fs.CopyToAsync(ws);
+            }
+
+            var file = new File
+            {
+                Id = id,
+                MimeType = formFile.ContentType,
+                Name = formFile.FileName,
+                Path = path
+            };
+            _files.Add(file);
+
+            return file;
+        }
+
+        public IEnumerable<File> Files => _files;
+    }
+}

src/GraphQL.Upload.AspNetCore/GraphQL.Upload.AspNetCore.csproj

@@ -2,13 +2,14 @@
 
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
-    <Version>0.1.0</Version>
+    <Version>0.2.0</Version>
     <Authors>Jannik Lassahn</Authors>
     <Company />
     <RepositoryUrl>https://github.com/JannikLassahn/graphql-dotnet-upload</RepositoryUrl>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
     <PackageProjectUrl>https://github.com/JannikLassahn/graphql-dotnet-upload</PackageProjectUrl>
     <Description>Middleware and an Upload scalar to add support for GraphQL multipart requests for ASP.NET Core</Description>
+    <PackageTags>ASP.NET Core, GraphQL, File Upload</PackageTags>
   </PropertyGroup>
 
   <ItemGroup>