Saving

PrivaPub/Services/ClientToServer/Public/DataService.cs

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+using PrivaPub.Models.Data;
+using PrivaPub.StaticServices;
+
+namespace PrivaPub.Services.ClientToServer.Public
+{
+    public class DataService : IDataService
+    {
+        readonly DbEntities DbEntities;
+        readonly AppConfigurationService AppConfigurationService;
+
+        public DataService(DbEntities dbCollections, AppConfigurationService appConfigurationService)
+        {
+            DbEntities = dbCollections;
+            AppConfigurationService = appConfigurationService;
+        }
+
+        public string GetCurrentVersion() =>
+             AppConfigurationService.AppConfiguration.Version;
+
+        public async Task<IEnumerable<Language>> GetLanguages(CancellationToken cancellationToken)
+        {
+            return (await DbEntities.Languages
+                            .Match(l => AppConfigurationService.AppConfiguration.SupportedLanguages.Contains(l.International2Code))
+                            .ExecuteAsync(cancellationToken)).OrderBy(l => l.NativeName).ToArray();
+        }
+
+        public async Task<bool> IsValidLanguageId(string languageId)
+        {
+            var anyLanguageWithId = await DbEntities.Languages.Match(l => l.ID == languageId).ExecuteAnyAsync();
+            if (!anyLanguageWithId)
+                return false;
+            var language2Code = (await DbEntities.Languages
+                            .Match(l => l.ID == languageId).ExecuteFirstAsync())?.International2Code;
+            return AppConfigurationService.AppConfiguration.SupportedLanguages.Contains(language2Code);
+        }
+    }
+}