#36 Added AppSettings, EPreferredDomain, ESupportedDatabase to facilitate appsettings configuration.

Author: Ray Fan

src/Fan.Web/Startup.cs

@@ -11,16 +11,20 @@
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
 using System.IO;
 
 namespace Fan.Web
 {
     public class Startup
     {
-        public Startup(IConfiguration configuration, IHostingEnvironment env)
+        private ILogger<Startup> _logger;
+
+        public Startup(IConfiguration configuration, IHostingEnvironment env, ILoggerFactory loggerFactory)
         {
             HostingEnvironment = env;
             Configuration = configuration;
+            _logger = loggerFactory.CreateLogger<Startup>();
         }
 
         public IConfiguration Configuration { get; }
@@ -35,10 +39,12 @@ public void ConfigureServices(IServiceCollection services)
                 if (useSqLite)
                 {
                     builder.UseSqlite("Data Source=" + Path.Combine(HostingEnvironment.ContentRootPath, "Fanray.sqlite"));
+                    _logger.LogInformation("Using SQLite database.");
                 }
                 else
                 {
                     builder.UseSqlServer(Configuration.GetConnectionString("DefaultConnection"));
+                    _logger.LogInformation("Using SQL Server database.");
                 }
             });
 
@@ -70,6 +76,7 @@ public void ConfigureServices(IServiceCollection services)
             services.AddScoped<IBlogService, BlogService>();
             services.AddScoped<IXmlRpcHelper, XmlRpcHelper>();
             services.AddScoped<IMetaWeblogService, MetaWeblogService>();
+            services.Configure<AppSettings>(Configuration.GetSection("AppSettings"));
 
             // Mvc
             services.AddMvc();

src/Fan/Enums/EPreferredDomain.cs

@@ -0,0 +1,9 @@
+namespace Fan.Enums
+{
+    public enum EPreferredDomain
+    {
+        Auto,
+        Www,
+        NonWww,
+    }
+}

src/Fan/Enums/ESupportedDatabase.cs

@@ -0,0 +1,8 @@
+namespace Fan.Enums
+{
+    public enum ESupportedDatabase
+    {
+        Sqlite,
+        SqlServer,
+    }
+}

src/Fan/Models/AppSettings.cs

@@ -0,0 +1,46 @@
+using Fan.Enums;
+
+namespace Fan.Models
+{
+    /// <summary>
+    /// AppSettings section in appsettings.json.
+    /// </summary>
+    public class AppSettings
+    {
+        /// <summary>
+        /// Current version of the application.
+        /// </summary>
+        public string Version { get; set; }
+
+        /// <summary>
+        /// The database to use: "sqlite" (default) or "sqlserver".
+        /// </summary>
+        public ESupportedDatabase Database { get; set; } = ESupportedDatabase.Sqlite;
+
+        /// <summary>
+        /// The preferred domain to use: "auto" (default), "www", "nonwww".
+        /// </summary>
+        /// <remarks>
+        /// - "auto" will use whatever the url is given, will not do forward
+        /// - "www" will forward root domain to www subdomain, e.g. fanray.com -> www.fanray.com
+        /// - "nonwww" will forward www subdomain to root domain, e.g. www.fanray.com -> fanray.com
+        /// 
+        /// Note if you are running from a subdomian other than "www", preferred domain will be ignored.
+        /// This setting is for SEO, it's good to decide on a preferred domain as indicated in this
+        /// Google Search Console document https://support.google.com/webmasters/answer/44231?hl=en
+        /// </remarks>
+        public EPreferredDomain PreferredDomain { get; set; } = EPreferredDomain.Auto;
+
+        /// <summary>
+        /// Whether to use https: false (default) or true.
+        /// </summary>
+        /// <remarks>
+        /// - false, will not forward http to https
+        /// - true, will forward http to https
+        /// 
+        /// Note if user sets this value to false but is already using https, I don't downgrade 
+        /// you to http as this is good for SEO, Google strongly recommend all website to use https.
+        /// </remarks>
+        public bool UseHttps { get; set; }
+    }
+}