get the package ignoring character case

src/isnd/Controllers/Packages/PackagesController.GetPackage.cs

@@ -4,6 +4,7 @@ using Microsoft.AspNetCore.Mvc;
 using isnd.Attributes;
 using isnd.Entities;
 using isn.abst;
+using System.Linq;
 
 namespace isnd.Controllers
 {
@@ -15,17 +16,26 @@ namespace isnd.Controllers
         public IActionResult GetPackage(
            [FromRoute][SafeName][Required] string id, 
            [FromRoute][SafeName][Required] string version,
-            [FromRoute] string idf, [FromRoute] string versionFromName)
+            [FromRoute] string idf, 
+            [FromRoute] string versionFromName)
         {
-            var pkgPath = Path.Combine(isndSettings.PackagesRootDir,
+            DirectoryInfo pkgsDirInfo = new DirectoryInfo(isndSettings.PackagesRootDir);
-            id, version, $"{id}-{version}." + Constants.PacketFileExtension
-            );
 
-            FileInfo pkgFileInfo = new FileInfo(pkgPath);
+            var pkgDirInfo = pkgsDirInfo.GetDirectories().FirstOrDefault(
+                s=>string.Compare(s.Name,id, System.StringComparison.InvariantCultureIgnoreCase)==0);
+            if (pkgDirInfo==null)
+                 return BadRequest("Package does´nt exist in the file system.");
+            var pkgVersionDirInfo = pkgDirInfo.GetDirectories().FirstOrDefault(
+                s=>s.Name==version);
+            var pkgNameSpec=$"{id}-{version}.{Constants.PacketFileExtension}";
+
+            FileInfo pkgFileInfo = pkgVersionDirInfo.GetFiles()
+            .FirstOrDefault(p=>string.Compare(p.Name,pkgNameSpec,
+             System.StringComparison.InvariantCultureIgnoreCase)==0);
 
             if (!pkgFileInfo.Exists)
             {
-                return BadRequest("Package does´nt exist in the file system.");
+                return BadRequest("Package version does´nt exist in the file system.");
             }
             return File(pkgFileInfo.OpenRead(), "application/zip; charset=binary");
         }

src/isnd/Data/Packages/Package.cs

@@ -49,6 +49,11 @@ namespace isnd.Data.Packages
 
         public virtual Commit LatestCommit { get; set; }
 
+        internal static bool ValidateId(string pkgId)
+        {
+            return !string.IsNullOrWhiteSpace(pkgId);
+        }
+
         public PackageVersion GetLatestVersion()
         {
             var latest = Versions.Max(v => v.NugetVersion);