Embedded provider to handle themes dynamically, compile on publish

Author: rxtur

src/App/App.csproj

@@ -3,7 +3,7 @@
   <PropertyGroup>
     <TargetFramework>netcoreapp2.1</TargetFramework>
     <MvcRazorExcludeRefAssembliesFromPublish>false</MvcRazorExcludeRefAssembliesFromPublish>
-    <MvcRazorCompileOnPublish>false</MvcRazorCompileOnPublish>
+    <MvcRazorCompileOnPublish>true</MvcRazorCompileOnPublish>
   </PropertyGroup>
 
   <ItemGroup>
@@ -13,6 +13,10 @@
     <PackageReference Include="Serilog.Sinks.RollingFile" Version="3.3.0" />
   </ItemGroup>
 
+  <ItemGroup>
+    <EmbeddedResource Include="Views\**\*" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\Core\Core.csproj" />
   </ItemGroup>

src/App/Pages/Admin/Settings/Index.cshtml.cs

@@ -4,6 +4,7 @@
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.Rendering;
 using System.Collections.Generic;
+using System.Linq;
 using System.Threading.Tasks;
 
 namespace App.Pages.Admin.Settings
@@ -74,20 +75,28 @@ public IActionResult OnPost()
 
         List<SelectListItem> GetThemes()
         {
-            var themes = new List<SelectListItem>
-            {
-                new SelectListItem { Text = "Simple", Value = "Simple" }
-            };
+            var themes = new List<SelectListItem>();
+            var combined = new List<string>();
 
             var storageThemes = _storage.GetThemes();
 
-            if (storageThemes != null && storageThemes.Count > 0)
+            if(storageThemes != null)
+                combined.AddRange(storageThemes);
+
+            if(AppConfig.EmbeddedThemes != null)
+                combined.AddRange(AppConfig.EmbeddedThemes);
+
+            combined = combined.Distinct().ToList();
+            combined.Sort();
+            
+            if (combined != null && combined.Count > 0)
             {
-                foreach (var theme in storageThemes)
+                foreach (var theme in combined)
                 {
                     themes.Add(new SelectListItem { Text = theme, Value = theme });
                 }
             }
+           
             return themes;
         }
     }

src/Core/AppConfig.cs

@@ -8,7 +8,9 @@ namespace Core
 {
     public static class AppConfig
     {
-        public static IEnumerable<Assembly> GetAssemblies()
+        public static IList<string> EmbeddedThemes { get; set; }
+
+        public static IEnumerable<Assembly> GetAssemblies(bool includeApp = false)
         {
             var assemblies = new List<Assembly>();
             try
@@ -18,8 +20,14 @@ public static IEnumerable<Assembly> GetAssemblies()
                     try
                     {
                         var assembly = Assembly.LoadFile(dll);
-                        var product = assembly.GetCustomAttribute<AssemblyProductAttribute>().Product;
 
+                        if ((dll.Contains("App.dll")) && includeApp)
+                        {
+                            assemblies.Add(assembly);
+                            continue;
+                        }
+
+                        var product = assembly.GetCustomAttribute<AssemblyProductAttribute>().Product;
                         if (product.StartsWith("Blogifier."))
                         {
                             assemblies.Add(assembly);

src/Core/AppSettings.cs

@@ -1,5 +1,6 @@
 using Microsoft.EntityFrameworkCore;
 using System;
+using System.Collections.Generic;
 using System.Reflection;
 
 namespace Core

src/Core/Core.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>netcoreapp2.1</TargetFramework>
-    <Version>2.0.1.9</Version>
+    <Version>2.0.2.0</Version>
   </PropertyGroup>
 
   <ItemGroup>

src/Core/Extensions/ServiceCollectionExtensions.cs

@@ -9,6 +9,7 @@
 using Microsoft.Extensions.DependencyInjection.Extensions;
 using Microsoft.Extensions.FileProviders;
 using Microsoft.Extensions.Options;
+using System.Collections.Generic;
 
 namespace Core.Extensions
 {
@@ -49,9 +50,31 @@ static void AddFileProviders(IServiceCollection services)
             {
                 services.Configure<RazorViewEngineOptions>(options =>
                 {
-                    foreach (var assembly in AppConfig.GetAssemblies())
+                    foreach (var assembly in AppConfig.GetAssemblies(true))
                     {
-                        options.FileProviders.Add(new EmbeddedFileProvider(assembly, assembly.GetName().Name));
+                        var fileProvider = new EmbeddedFileProvider(assembly, assembly.GetName().Name);
+
+                        // load themes from embedded provider
+                        var content = fileProvider.GetDirectoryContents("");
+                        if (content.Exists)
+                        {
+                            foreach (var item in content)
+                            {
+                                if (item.Name.StartsWith("Views.Themes"))
+                                {
+                                    if (AppConfig.EmbeddedThemes == null)
+                                        AppConfig.EmbeddedThemes = new List<string>();
+
+                                    var ar = item.Name.Split('.');
+                                    if(ar.Length > 2 && !AppConfig.EmbeddedThemes.Contains(ar[2]))
+                                    {
+                                        AppConfig.EmbeddedThemes.Add(ar[2]);
+                                    }
+                                }
+                            }
+                        }
+
+                        options.FileProviders.Add(fileProvider);
                     }
                 });
             }