Implemented VirtualFileTemplateContributor and added tests.

framework/src/Volo.Abp.TextTemplating/Volo.Abp.TextTemplating.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <Import Project="..\..\..\configureawait.props" />
   <Import Project="..\..\..\common.props" />
@@ -15,7 +15,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\Volo.Abp.Core\Volo.Abp.Core.csproj" />
+    <ProjectReference Include="..\Volo.Abp.VirtualFileSystem\Volo.Abp.VirtualFileSystem.csproj" />
   </ItemGroup>
 
 </Project>

framework/src/Volo.Abp.TextTemplating/Volo/Abp/TextTemplating/AbpTextTemplatingModule.cs

@@ -2,9 +2,13 @@
 using System.Collections.Generic;
 using Microsoft.Extensions.DependencyInjection;
 using Volo.Abp.Modularity;
+using Volo.Abp.VirtualFileSystem;
 
 namespace Volo.Abp.TextTemplating
 {
+    [DependsOn(
+        typeof(AbpVirtualFileSystemModule)
+        )]
     public class AbpTextTemplatingModule : AbpModule
     {
         public override void PreConfigureServices(ServiceConfigurationContext context)

framework/src/Volo.Abp.TextTemplating/Volo/Abp/TextTemplating/TemplateContributorInitializationContext.cs

@@ -12,8 +12,8 @@ namespace Volo.Abp.TextTemplating
         public IServiceProvider ServiceProvider { get; }
 
         public TemplateContributorInitializationContext(
-            TemplateDefinition templateDefinition,
-            IServiceProvider serviceProvider)
+            [NotNull] TemplateDefinition templateDefinition,
+            [NotNull] IServiceProvider serviceProvider)
         {
             TemplateDefinition = Check.NotNull(templateDefinition, nameof(templateDefinition));
             ServiceProvider = Check.NotNull(serviceProvider, nameof(serviceProvider));

framework/src/Volo.Abp.TextTemplating/Volo/Abp/TextTemplating/TemplateDefinition.cs

@@ -22,15 +22,12 @@ namespace Volo.Abp.TextTemplating
         [CanBeNull]
         public string DefaultCultureName { get; }
 
-        public bool SingleTemplateFile { get; } //TODO: ???
-
         public TemplateDefinition(
             [NotNull] string name, 
             Type localizationResource = null, 
             bool isLayout = false,
             string layout = DefaultLayoutPlaceHolder, 
-            string defaultCultureName = null, 
-            bool singleTemplateFile = false)
+            string defaultCultureName = null)
         {
             Name = Check.NotNullOrWhiteSpace(name, nameof(name));
             LocalizationResource = localizationResource;
@@ -38,7 +35,12 @@ namespace Volo.Abp.TextTemplating
             IsLayout = isLayout;
             Layout = layout;
             DefaultCultureName = defaultCultureName;
-            SingleTemplateFile = singleTemplateFile;
+        }
+
+        public virtual TemplateDefinition AddContributor(ITemplateContributor contributor)
+        {
+            Contributors.Add(contributor);
+            return this;
         }
     }
 }

framework/src/Volo.Abp.TextTemplating/Volo/Abp/TextTemplating/VirtualFiles/VirtualFileTemplateContributor.cs

@@ -0,0 +1,84 @@
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using JetBrains.Annotations;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.FileProviders;
+using Volo.Abp.VirtualFileSystem;
+
+namespace Volo.Abp.TextTemplating.VirtualFiles
+{
+    public class VirtualFileTemplateContributor : ITemplateContributor
+    {
+        private readonly string _virtualPath;
+        private IVirtualFileProvider _virtualFileProvider;
+        private volatile Dictionary<string, string> _templateDictionary;
+        private readonly object _syncObj = new object();
+
+        public VirtualFileTemplateContributor(string virtualPath)
+        {
+            _virtualPath = virtualPath;
+        }
+
+        public void Initialize(TemplateContributorInitializationContext context)
+        {
+            _virtualFileProvider = context.ServiceProvider.GetRequiredService<IVirtualFileProvider>();
+        }
+
+        public string GetOrNull([CanBeNull] string cultureName = null)
+        {
+            var dictionary = GetTemplateDictionary();
+
+            if (cultureName == null)
+            {
+                return dictionary.GetOrDefault("__default");
+            }
+            else
+            {
+                return dictionary.GetOrDefault(cultureName) ??
+                       dictionary.GetOrDefault("__default");
+            }
+        }
+
+        private Dictionary<string, string> GetTemplateDictionary()
+        {
+            if (_templateDictionary != null)
+            {
+                return _templateDictionary;
+            }
+
+            lock (_syncObj)
+            {
+                if (_templateDictionary != null)
+                {
+                    return _templateDictionary;
+                }
+
+                var dictionary = new Dictionary<string, string>();
+
+                var fileInfo = _virtualFileProvider.GetFileInfo(_virtualPath);
+                if (!fileInfo.IsDirectory)
+                {
+                    //TODO: __default to consts
+                    dictionary.Add("__default", fileInfo.ReadAsString());
+                }
+                else
+                {
+                    foreach (var file in _virtualFileProvider.GetDirectoryContents(_virtualPath))
+                    {
+                        if (file.IsDirectory)
+                        {
+                            continue;
+                        }
+
+                        // TODO: How to normalize file names?
+                        dictionary.Add(file.Name.RemovePostFix(".tpl"), file.ReadAsString());
+                    }
+                }
+
+                _templateDictionary = dictionary;
+                return dictionary;
+            }
+        }
+    }
+}

framework/test/Volo.Abp.TextTemplating.Tests/Volo.Abp.TextTemplating.Tests.csproj

@@ -7,6 +7,11 @@
     <RootNamespace />
   </PropertyGroup>
 
+  <ItemGroup>
+    <EmbeddedResource Include="Volo\Abp\TextTemplating\SampleTemplates\**\*.tpl" />
+    <None Remove="Volo\Abp\TextTemplating\SampleTemplates\**\*.tpl" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\AbpTestBase\AbpTestBase.csproj" />
     <ProjectReference Include="..\..\src\Volo.Abp.TextTemplating\Volo.Abp.TextTemplating.csproj" />

framework/test/Volo.Abp.TextTemplating.Tests/Volo/Abp/TextTemplating/AbpTextTemplatingTestModule.cs

@@ -1,5 +1,6 @@
 using Volo.Abp.Autofac;
 using Volo.Abp.Modularity;
+using Volo.Abp.VirtualFileSystem;
 
 namespace Volo.Abp.TextTemplating
 {
@@ -10,6 +11,12 @@ namespace Volo.Abp.TextTemplating
     )]
     public class AbpTextTemplatingTestModule : AbpModule
     {
-
+        public override void ConfigureServices(ServiceConfigurationContext context)
+        {
+            Configure<AbpVirtualFileSystemOptions>(options =>
+            {
+                options.FileSets.AddEmbedded<AbpTextTemplatingTestModule>("Volo.Abp.TextTemplating");
+            });
+        }
     }
 }

framework/test/Volo.Abp.TextTemplating.Tests/Volo/Abp/TextTemplating/SampleTemplates/ForgotPasswordEmail.tpl

@@ -0,0 +1 @@
+Please click to the following link to get an email to reset your password!

framework/test/Volo.Abp.TextTemplating.Tests/Volo/Abp/TextTemplating/SampleTemplates/WelcomeEmail/en.tpl

@@ -0,0 +1 @@
+Welcome to the abp.io!

framework/test/Volo.Abp.TextTemplating.Tests/Volo/Abp/TextTemplating/SampleTemplates/WelcomeEmail/tr.tpl

@@ -0,0 +1 @@
+abp.io'ya hoşgeldiniz!

framework/test/Volo.Abp.TextTemplating.Tests/Volo/Abp/TextTemplating/TestTemplateDefinitionProvider.cs

@@ -1,17 +1,22 @@
-namespace Volo.Abp.TextTemplating
+using Volo.Abp.TextTemplating.VirtualFiles;
+
+namespace Volo.Abp.TextTemplating
 {
     public class TestTemplateDefinitionProvider : TemplateDefinitionProvider
     {
         public override void Define(ITemplateDefinitionContext context)
         {
-            context
-                .Add(
-                    new TemplateDefinition(
-                        TestTemplates.TestTemplate1
-                    ), new TemplateDefinition(
-                        TestTemplates.TestTemplateLayout1
-                    )
-                );
+            context.Add(
+                new TemplateDefinition(
+                    TestTemplates.TestTemplate1
+                ).AddContributor(
+                    new VirtualFileTemplateContributor("/SampleTemplates/WelcomeEmail")
+                )
+            );
+
+            context.Add(new TemplateDefinition(
+                TestTemplates.TestTemplateLayout1
+            ));
         }
     }
 }

framework/test/Volo.Abp.TextTemplating.Tests/Volo/Abp/TextTemplating/VirtualFiles/VirtualFileTemplateContributor_Tests.cs

@@ -0,0 +1,50 @@
+using Shouldly;
+using Xunit;
+
+namespace Volo.Abp.TextTemplating.VirtualFiles
+{
+    public class VirtualFileTemplateContributor_Tests : AbpTextTemplatingTestBase
+    {
+        [Fact]
+        public void Should_Get_Localized_Content_By_Culture()
+        {
+            var contributor = new VirtualFileTemplateContributor(
+                "/SampleTemplates/WelcomeEmail"
+            );
+
+            contributor.Initialize(
+                new TemplateContributorInitializationContext(
+                    new TemplateDefinition("Test"),
+                    ServiceProvider
+                )
+            );
+
+            contributor
+                .GetOrNull("en")
+                .ShouldBe("Welcome to the abp.io!");
+
+            contributor
+                .GetOrNull("tr")
+                .ShouldBe("abp.io'ya hoşgeldiniz!");
+        }
+
+        [Fact]
+        public void Should_Get_Non_Localized_Template_Content()
+        {
+            var contributor = new VirtualFileTemplateContributor(
+                "/SampleTemplates/ForgotPasswordEmail.tpl"
+            );
+
+            contributor.Initialize(
+                new TemplateContributorInitializationContext(
+                    new TemplateDefinition("Test"),
+                    ServiceProvider
+                )
+            );
+
+            contributor
+                .GetOrNull()
+                .ShouldBe("Please click to the following link to get an email to reset your password!");
+        }
+    }
+}