Add button to download current log

LANCommander.Server/Endpoints/LogEndpoints.cs

@@ -0,0 +1,43 @@
+using LANCommander.Server.Settings.Enums;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Options;
+using System.Net.Mime;
+
+namespace LANCommander.Server.Endpoints;
+
+public static class LogEndpoints
+{
+    public static void MapLogEndpoints(this IEndpointRouteBuilder routes)
+    {
+        var group = routes.MapGroup("/api/Logs")
+            .RequireAuthorization();
+
+        group.MapGet("/Download/{fileName}", DownloadAsync);
+    }
+
+    private static IResult DownloadAsync(
+        string fileName,
+        [FromServices] IOptions<Settings.Settings> settings)
+    {
+        var fileProvider = settings.Value.Server.Logs.Providers
+            .FirstOrDefault(p => p.Type == LoggingProviderType.File && p.Enabled);
+
+        if (fileProvider == null)
+            return TypedResults.NotFound("No file logging provider is configured.");
+
+        // Sanitize the file name to prevent directory traversal
+        fileName = Path.GetFileName(fileName);
+
+        if (!fileName.StartsWith("log-") || !fileName.EndsWith(".txt"))
+            return TypedResults.BadRequest("Invalid log file name.");
+
+        var logFilePath = Path.Combine(fileProvider.ConnectionString, fileName);
+
+        if (!File.Exists(logFilePath))
+            return TypedResults.NotFound("Log file not found.");
+
+        var stream = new FileStream(logFilePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
+
+        return TypedResults.File(stream, MediaTypeNames.Text.Plain, fileName);
+    }
+}

LANCommander.Server/Startup/Endpoints.cs

@@ -37,6 +37,7 @@ public static class Endpoints
             endpoints.MapSaveEndpoints();
             endpoints.MapServerEndpoints();
             endpoints.MapSettingsEndpoints();
+            endpoints.MapLogEndpoints();
             endpoints.MapHqEndpoints();
             endpoints.MapTagEndpoints();
             endpoints.MapControllers();

LANCommander.Server/UI/Pages/Settings/Logs/Index.razor

@@ -7,10 +7,15 @@
 @inject IOptions<Settings> Settings
 @inject SettingsProvider<Settings> SettingsProvider
 @inject IMessageService MessageService
+@inject NavigationManager NavigationManager
 @inject ILogger<Index> Logger
 
 <PageHeader Title="Logs">
     <PageHeaderExtra>
+        @if (FileProvider != null)
+        {
+            <Button OnClick="DownloadLog" Icon="@IconType.Outline.Download">Download Log</Button>
+        }
         <Button OnClick="Save" Type="@ButtonType.Primary">Save</Button>
     </PageHeaderExtra>
 </PageHeader>
@@ -52,6 +57,7 @@
 
 @code {
     List<LoggingProvider> Providers = new();
+    LoggingProvider? FileProvider => Providers.FirstOrDefault(p => p.Type == LoggingProviderType.File && p.Enabled);
 
     protected override void OnInitialized()
     {
@@ -92,4 +98,21 @@
     {
         Providers.Remove(provider);
     }
+
+    void DownloadLog()
+    {
+        if (FileProvider == null)
+            return;
+
+        var logFileName = $"log-{DateTime.Now:yyyy-MM-dd}.txt";
+        var logFilePath = Path.Combine(FileProvider.ConnectionString, logFileName);
+
+        if (!File.Exists(logFilePath))
+        {
+            MessageService.Warning("No log file exists for today.");
+            return;
+        }
+
+        NavigationManager.NavigateTo($"/api/Logs/Download/{logFileName}", true);
+    }
 }