Can download a cover art via the cover art's id. Just need to have a stock cover art for songs without any and update the documentation. #50

Controllers/v1/CoverArtController.cs

@@ -1,14 +1,19 @@
 using System;
 using System.Collections.Generic;
+using System.IO;
 
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Logging;
 
+using Icarus.Controllers.Managers;
+using Icarus.Database.Repositories;
+using Icarus.Models;
+
 namespace Icarus.Controllers.V1
 {
-    [Route("api/v1/coverart/song")]
+    [Route("api/v1/coverart")]
     [ApiController]
     public class CoverArtController : ControllerBase
     {
@@ -19,18 +24,39 @@ namespace Icarus.Controllers.V1
 
         #region Constructors
         public CoverArtController(ILogger<CoverArtController> logger)
-	{
-	    _logger = logger;
-	}
-	#endregion
+        {
+            _logger = logger;
+        }
+        #endregion
 
 
         #region HTTP Routes
-	[HttpGet("{id}")]
-	public IActionResult Get(int id)
-	{
-	    return NotFound();
-	}
+        [HttpGet("{id}")]
+        [Authorize("download:cover_art")]
+        public IActionResult Get(int id)
+        {
+            var coverArt = new CoverArt
+            {
+                CoverArtId = id
+            };
+
+            var coverArtRepository = HttpContext
+                .RequestServices
+                .GetService(
+                        typeof(CoverArtRepository)) as CoverArtRepository;
+
+            coverArt = coverArtRepository.GetCoverArt(coverArt);
+
+            if (coverArt != null)
+            {
+                var coverArtBytes = System.IO.File.ReadAllBytes(
+                        coverArt.ImagePath);
+                return File(coverArtBytes, "application/x-msdownload", 
+                        coverArt.SongTitle);
+            }
+            else
+                return NotFound();
+        }
         #endregion
     }
 }