Add seed-fetching service

ALttPRandomizer/GenerateSeedController.cs

@@ -1,19 +1,30 @@
 namespace ALttPRandomizer {
     using ALttPRandomizer.Model;
+    using ALttPRandomizer.Service;
     using Microsoft.AspNetCore.Mvc;
+    using System.Threading.Tasks;
 
     public class GenerateController : Controller {
-        public GenerateController(Randomizer randomizer) {
+        public GenerateController(Randomizer randomizer, SeedService seedService) {
             this.Randomizer = randomizer;
+            this.SeedService = seedService;
         }
 
         private Randomizer Randomizer { get; }
+        private SeedService SeedService { get; }
 
         [Route("/generate")]
         [HttpPost]
         public ActionResult Generate(SeedSettings settings) {
             var result = this.Randomizer.Randomize();
-            return Content(result);
+            return Ok(result);
+        }
+
+        [Route("/seed/{id}")]
+        [HttpGet]
+        public async Task<ActionResult> GetSeed(string id) {
+            var result = await this.SeedService.GetSeed(id);
+            return Ok(result);
         }
     }
 }