Initial commit

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

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+using DeepL;
+using DeepL.Model;
+using FictionArchive.Service.TranslationService.Models;
+using Language = FictionArchive.Common.Enums.Language;
+
+namespace FictionArchive.Service.TranslationService.Services.TranslationEngines.DeepLTranslate;
+
+public class DeepLTranslationAdapater : ITranslationEngineAdapter
+{
+    private readonly DeepLClient _deepLClient;
+    private readonly ILogger<DeepLTranslationAdapater> _logger;
+
+    private const string DisplayName = "DeepL";
+    private const string Key = "deepl";
+
+    public DeepLTranslationAdapater(DeepLClient deepLClient, ILogger<DeepLTranslationAdapater> logger)
+    {
+        _deepLClient = deepLClient;
+        _logger = logger;
+    }
+
+    public TranslationEngineDescriptor Descriptor
+    {
+        get
+        {
+            return new TranslationEngineDescriptor()
+            {
+                DisplayName = DisplayName,
+                Key = Key,
+            };
+        }
+    }
+
+    public async Task<string?> 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 translationResult.Text;
+    }
+
+    private string GetLanguageCode(Language language)
+    {
+        return language switch
+        {
+            Language.En => LanguageCode.EnglishAmerican,
+            Language.Kr => LanguageCode.Korean,
+            Language.Ch => LanguageCode.Chinese,
+            Language.Ja => LanguageCode.Japanese
+        };
+    }
+}