Added Serilog for improved logs

- Logs will be shown by console and stored in files.

src/Somnia.GuestLog/AppSettings.cs

@@ -0,0 +1,8 @@
+namespace Somnia.GuestLog;
+
+public static class AppSettings
+{
+    public const string AppName = "Somnia-GuestLog-dev";
+
+    public const string AppVersion = "v0.0.0-dev"; //2026-09-08
+}

src/Somnia.GuestLog/Config/log_Config.json

@@ -0,0 +1,50 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "Serilog": {
+    "Using": [
+      "Serilog.Sinks.Console",
+      "Serilog.Sinks.File"
+    ],
+    "MinimumLevel": {
+      "Default": "Information",
+      "Override": {
+        "Microsoft": "Warning",
+        "Microsoft.EntityFrameworkCore.Database.Command": "Warning"
+      }
+    },
+    "Enrich": [
+      "FromLogContext",
+      "WithThreadId",
+      "WithProcessId"
+    ],
+    "Properties": {
+      "ApplicationName": "Somnia-GuestLog"
+    },
+    "WriteTo": [
+      {
+        "Name": "Console",
+        "Args": {
+          "restrictedToMinimumLevel": "Information"
+        }
+      },
+      {
+        "Name": "File",
+        "Args": {
+          // Logs data path
+          "path": "/SomniaGuestLog/logs/log_.log",
+          "outputTemplate": "{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} [{ProcessId}-{ThreadId}] [{Level}] {JobKey}{Message}{NewLine}{Exception}",
+          "rollingInterval": "Day",
+          "rollOnFileSizeLimit": true,
+          "fileSizeLimitBytes": 1073741824,
+          "retainedFileCountLimit": 30,
+          "restrictedToMinimumLevel": "Information"
+        }
+      }
+    ]
+  }
+}

src/Somnia.GuestLog/Program.cs

@@ -4,6 +4,9 @@ using Microsoft.AspNetCore.Localization;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.Diagnostics;
 using MudBlazor.Services;
+using Serilog;
+using Serilog.Extensions.Logging;
+using Somnia.GuestLog;
 using Somnia.GuestLog.Components;
 using Somnia.GuestLog.Infrastructure;
 using Somnia.GuestLog.Models.Configuration;
@@ -18,6 +21,20 @@ using Somnia.GuestLog.Validators;
 
 var builder = WebApplication.CreateBuilder(args);
 
+//Load config files.
+builder.Configuration.AddJsonFile("Config/log_Config.json", optional: false, reloadOnChange: false);
+
+//Create and configure Logger (Serilog)
+var serilog = new LoggerConfiguration()
+    .ReadFrom.Configuration(builder.Configuration)
+    .CreateLogger();
+builder.Services.AddSerilog(serilog);
+
+var logger = new SerilogLoggerFactory(serilog).CreateLogger<Program>();
+
+logger.LogInformation("\n\n\n -------------- Starting {appName} {appVersion} --------------", AppSettings.AppName, AppSettings.AppVersion);
+
+
 var connectionStringGuestLog = builder.Configuration.GetConnectionString("DbSomniaGuestLog")
     ?? throw new InvalidOperationException("Connection string 'DbSomniaGuestLog' not found.");
 builder.Services.AddDbContextFactory<GuestLogContext>(options =>

src/Somnia.GuestLog/Somnia.GuestLog.csproj

@@ -12,6 +12,13 @@
     <PackageReference Include="FluentStorage.AWS" />
     <PackageReference Include="FluentValidation" />
     <PackageReference Include="MudBlazor" />
+    <PackageReference Include="Serilog" />
+    <PackageReference Include="Serilog.Enrichers.Process" />
+    <PackageReference Include="Serilog.Enrichers.Thread" />
+    <PackageReference Include="Serilog.Extensions.Hosting" />
+    <PackageReference Include="Serilog.Settings.Configuration" />
+    <PackageReference Include="Serilog.Sinks.Console" />
+    <PackageReference Include="Serilog.Sinks.File" />
   </ItemGroup>
 
   <ItemGroup>

src/Somnia.GuestLog/appsettings.json

@@ -2,12 +2,6 @@
   "ConnectionStrings": {
     "DbSomniaGuestLog": "Host=localhost;Port=5432;Username=postgres;Password=P@ssw0rd;Database=SomniaGuestLog"
   },
-  "Logging": {
-    "LogLevel": {
-      "Default": "Information",
-      "Microsoft.AspNetCore": "Warning"
-    }
-  },
   "AllowedHosts": "*",
   "AddressQuery": {
     "EnableAddressQuery": true,