Add seed-fetching service

ALttPRandomizer/Azure/AzureStorage.cs

@@ -0,0 +1,57 @@
+namespace ALttPRandomizer.Azure {
+    using global::Azure.Storage.Blobs;
+    using Microsoft.Extensions.Logging;
+    using System;
+    using System.Collections.Generic;
+    using System.IO;
+    using System.Threading.Tasks;
+
+    public class AzureStorage {
+        public AzureStorage(BlobContainerClient blobClient, ILogger<AzureStorage> logger) {
+            this.BlobClient = blobClient;
+            this.Logger = logger;
+        }
+
+        private ILogger<AzureStorage> Logger { get; }
+        private BlobContainerClient BlobClient { get; }
+
+        public async Task UploadFile(string name, Stream data) {
+            await BlobClient.UploadBlobAsync(name, data);
+        }
+
+        public async Task UploadFileAndDelete(string name, string filepath) {
+            using (var stream = new FileStream(filepath, FileMode.Open, FileAccess.Read)) {
+                this.Logger.LogDebug("Uploading file {filepath} -> {name}", filepath, name);
+                await this.UploadFile(name, stream);
+            }
+
+            this.Logger.LogDebug("Deleting file {filepath}", filepath);
+            File.Delete(filepath);
+        }
+
+        public async Task<Dictionary<string, BinaryData>> GetFiles(string seedId) {
+            var prefix = seedId + "/";
+            var blobs = this.BlobClient.GetBlobsAsync(prefix: prefix);
+
+            var data = new Dictionary<string, BinaryData>();
+
+            await foreach (var blob in blobs) {
+                var result = await this.BlobClient.GetBlobClient(blob.Name).DownloadContentAsync();
+                if (result.Value.Details.ContentLength == 0) {
+                    continue;
+                }
+
+                if (!blob.Name.StartsWith(prefix)) {
+                    this.Logger.LogWarning("Found prefix mismatch for seed id {seedId}, blob name {blobName}", seedId, blob.Name);
+                    continue;
+                }
+
+                var suffix = blob.Name.Substring(prefix.Length);
+
+                data[suffix] = result.Value.Content;
+            }
+
+            return data;
+        }
+    }
+}

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);
         }
     }
 }

ALttPRandomizer/IdGenerator.cs

@@ -4,7 +4,7 @@
     public class IdGenerator {
         private const string chars = "abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ23456789";
         private const int length = 10;
-        private static Random random = new Random();
+        private static readonly Random random = new Random();
 
         public string GenerateId() {
             var str = new char[length];

ALttPRandomizer/Program.cs

@@ -1,9 +1,11 @@
 namespace ALttPRandomizer
 {
     using System.Text.Json.Serialization;
+    using ALttPRandomizer.Azure;
     using ALttPRandomizer.Options;
-    using Azure.Identity;
-    using Azure.Storage.Blobs;
+    using ALttPRandomizer.Service;
+    using global::Azure.Identity;
+    using global::Azure.Storage.Blobs;
     using Microsoft.AspNetCore.Builder;
     using Microsoft.Extensions.Configuration;
     using Microsoft.Extensions.DependencyInjection;
@@ -36,8 +38,10 @@
             var seedClient = new BlobContainerClient(settings.AzureSettings.BlobstoreEndpoint, token);
 
             builder.Services.AddSingleton(seedClient);
-            builder.Services.AddScoped<Randomizer, Randomizer>();
-            builder.Services.AddScoped<IdGenerator, IdGenerator>();
+            builder.Services.AddSingleton<AzureStorage>();
+            builder.Services.AddScoped<Randomizer>();
+            builder.Services.AddScoped<SeedService>();
+            builder.Services.AddScoped<IdGenerator>();
 
             var app = builder.Build();
 

ALttPRandomizer/Properties/launchSettings.json

@@ -0,0 +1,9 @@
+{
+  "profiles": {
+    "https": {
+      "applicationUrl": "localhost:5000/swagger",
+      "commandName": "Project",
+      "launchBrowser": true
+    }
+  }
+}

ALttPRandomizer/Randomizer.cs

@@ -1,26 +1,25 @@
 namespace ALttPRandomizer {
+    using ALttPRandomizer.Azure;
     using ALttPRandomizer.Options;
-    using Azure.Storage.Blobs;
     using Microsoft.Extensions.Logging;
     using Microsoft.Extensions.Options;
-    using System;
     using System.Diagnostics;
     using System.IO;
     using System.Threading.Tasks;
 
     public class Randomizer {
         public Randomizer(
-            IdGenerator idGenerator,
-            BlobContainerClient seedClient,
-            IOptionsMonitor<ServiceOptions> optionsMonitor,
-            ILogger<Randomizer> logger) {
+                IdGenerator idGenerator,
+                AzureStorage azureStorage,
+                IOptionsMonitor<ServiceOptions> optionsMonitor,
+                ILogger<Randomizer> logger) {
             this.IdGenerator = idGenerator;
-            this.SeedClient = seedClient;
+            this.AzureStorage = azureStorage;
             this.OptionsMonitor = optionsMonitor;
             this.Logger = logger;
         }
 
-        private BlobContainerClient SeedClient { get; }
+        private AzureStorage AzureStorage { get; }
         private IOptionsMonitor<ServiceOptions> OptionsMonitor { get; }
         private IdGenerator IdGenerator { get; }
         private ILogger<Randomizer> Logger { get; }
@@ -81,26 +80,17 @@
             var spoilerIn = Path.Join(Path.GetTempPath(), string.Format("DR_{0}_Spoiler.txt", id));
             var spoilerOut = string.Format("{0}/spoiler.txt", id);
 
-            var uploadPatch = UploadFile(bpsOut, bpsIn);
-            var uploadSpoiler = UploadFile(spoilerOut, spoilerIn);
+            var uploadPatch = this.AzureStorage.UploadFileAndDelete(bpsOut, bpsIn);
+            var uploadSpoiler = this.AzureStorage.UploadFileAndDelete(spoilerOut, spoilerIn);
 
             await Task.WhenAll(uploadPatch, uploadSpoiler);
 
+            this.Logger.LogDebug("Deleting file {filepath}", rom);
             File.Delete(rom);
 
             this.Logger.LogDebug("Finished uploading seed id {id}", id);
         }
 
-        private async Task UploadFile(string name, string filepath) {
-            using (var stream = new FileStream(filepath, FileMode.Open, FileAccess.Read)) {
-                this.Logger.LogDebug("Uploading file {filepath} -> {name}", filepath, name);
-                await this.SeedClient.UploadBlobAsync(name, stream);
-            }
-
-            this.Logger.LogDebug("Deleting file {filepath}", filepath);
-            File.Delete(filepath);
-        }
-
         private void GenerationFailed(string id, int exitcode) {
         }
     }

ALttPRandomizer/Service/SeedService.cs

@@ -0,0 +1,25 @@
+namespace ALttPRandomizer.Service {
+    using ALttPRandomizer.Azure;
+    using System;
+    using System.Collections.Generic;
+    using System.Threading.Tasks;
+
+    public class SeedService {
+        public SeedService(AzureStorage azureStorage) {
+            this.AzureStorage = azureStorage;
+        }
+
+        private AzureStorage AzureStorage { get; }
+
+        public async Task<IDictionary<string, string>> GetSeed(string seedId) {
+            var files = await this.AzureStorage.GetFiles(seedId);
+
+            var result = new Dictionary<string, string>();
+            foreach (var file in files) {
+                result[file.Key] = Convert.ToBase64String(file.Value.ToMemory().ToArray());
+            }
+
+            return result;
+        }
+    }
+}