[FA-misc] Translation engine work

FictionArchive.Service.TranslationService/Services/TranslationEngines/DeepLTranslate/DeepLTranslationEngine.cs

@@ -2,6 +2,7 @@ using DeepL;
 using DeepL.Model;
 using FictionArchive.Service.TranslationService.Models;
 using FictionArchive.Service.TranslationService.Models.Enums;
+using Polly;
 using Language = FictionArchive.Common.Enums.Language;
 
 namespace FictionArchive.Service.TranslationService.Services.TranslationEngines.DeepLTranslate;
@@ -9,34 +10,38 @@ namespace FictionArchive.Service.TranslationService.Services.TranslationEngines.
 public class DeepLTranslationEngine : ITranslationEngine
 {
     private readonly DeepLClient _deepLClient;
+    private readonly ResiliencePipeline _pipeline;
     private readonly ILogger<DeepLTranslationEngine> _logger;
 
     private const string DisplayName = "DeepL";
     private const string Key = "deepl";
 
-    public DeepLTranslationEngine(DeepLClient deepLClient, ILogger<DeepLTranslationEngine> logger)
+    public DeepLTranslationEngine(
+        DeepLClient deepLClient,
+        ResiliencePipeline pipeline,
+        ILogger<DeepLTranslationEngine> logger)
     {
         _deepLClient = deepLClient;
+        _pipeline = pipeline;
         _logger = logger;
     }
 
-    public TranslationEngineDescriptor Descriptor
+    public TranslationEngineDescriptor Descriptor => new()
     {
-        get
-        {
-            return new TranslationEngineDescriptor()
-            {
-                DisplayName = DisplayName,
-                Key = Key,
-            };
-        }
-    }
+        DisplayName = DisplayName,
+        Key = Key,
+    };
 
     public async Task<TranslationResult> GetTranslation(string body, Language from, Language to)
     {
-        TextResult translationResult = await _deepLClient.TranslateTextAsync(body, GetLanguageCode(from), GetLanguageCode(to));
-        _logger.LogInformation("Translated text. Usage statistics: CHARACTERS BILLED {TranslationResultBilledCharacters}", translationResult.BilledCharacters);
-        return new TranslationResult()
+        TextResult translationResult = await _pipeline.ExecuteAsync(
+            async _ => await _deepLClient.TranslateTextAsync(body, GetLanguageCode(from), GetLanguageCode(to)));
+
+        _logger.LogInformation(
+            "Translated text. Usage statistics: CHARACTERS BILLED {TranslationResultBilledCharacters}",
+            translationResult.BilledCharacters);
+
+        return new TranslationResult
         {
             OriginalText = body,
             From = from,
@@ -59,4 +64,4 @@ public class DeepLTranslationEngine : ITranslationEngine
             _ => throw new ArgumentOutOfRangeException(nameof(language), language, null)
         };
     }
-}
+}