Added logdownloader

Birdmap.API/Controllers/LogsController.cs

@@ -0,0 +1,66 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.IO.Compression;
+using System.Linq;
+using System.Reflection;
+using System.Threading.Tasks;
+
+namespace Birdmap.API.Controllers
+{
+    [Authorize(Roles = "Admin")]
+    [ApiController]
+    [Route("api/[controller]")]
+    public class LogsController : ControllerBase
+    {
+        private readonly ILogger<LogsController> _logger;
+        private readonly string _logFolderPath = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "Log");
+
+        public LogsController(ILogger<LogsController> logger)
+        {
+            _logger = logger;
+        }
+
+        [HttpGet("all")]
+        public ActionResult<List<string>> GetAll()
+        {
+            _logger.LogInformation($"Getting all log filenames...");
+
+            return Directory.EnumerateFiles(_logFolderPath, "*.log")
+                .Select(f => Path.GetFileName(f))
+                .ToList();
+        }
+
+        [HttpGet]
+        public async Task<IActionResult> GetFiles([FromQuery] params string[] filenames)
+        {
+            if (!filenames.Any())
+                return null;
+
+            return await Task.Run(() =>
+            {
+                var zipStream = new MemoryStream();
+
+                using (var zip = new ZipArchive(zipStream, ZipArchiveMode.Create, true))
+                {
+                    foreach (var file in Directory.GetFiles(_logFolderPath, "*.log"))
+                    {
+                        var filename = Path.GetFileName(file);
+
+                        if (filenames.Contains(filename))
+                        {
+                            zip.CreateEntryFromFile(file, filename);
+                        }
+                    }
+                }
+
+                zipStream.Position = 0;
+
+                return File(zipStream, "application/octet-stream");
+            });
+        }
+    }
+}