more work on api & rename to Pilz.Net

Pilz.Net.CloudProviders.Nextcloud/Client/Apps/FileRetention/FilesRetentionClient.cs

@@ -0,0 +1,41 @@
+using Pilz.Net.CloudProviders.Nextcloud;
+using Pilz.Net.CloudProviders.Nextcloud.Client;
+using Pilz.Net.CloudProviders.Nextcloud.Client.Apps.FileRetention.Model;
+
+namespace Pilz.Net.CloudProviders.Nextcloud.Client.Apps.FileRetention;
+
+public class FilesRetentionClient : ClientBase
+{
+    public FilesRetentionClient(NextcloudClient client) : base(client)
+    {
+    }
+
+    public bool CreateRetentionRule(RetentionRuleInfo rule)
+    {
+        var entry = rule.ToOcsData();
+        return Client.Ocs.GetApi<OcsApiFilesRetention>().CreateRetentionRule(entry);
+    }
+
+    public bool DeleteRetentionRule(int ruleID)
+    {
+        return Client.Ocs.GetApi<OcsApiFilesRetention>().DeleteRetentionRule(ruleID);
+    }
+
+    public RetentionRule[]? GetRetentionRules()
+    {
+        var api = Client.Ocs.GetApi<OcsApiFilesRetention>();
+        var response = api.GetRetentionRules();
+
+        if (response?.Data is not null)
+        {
+            var rules = new List<RetentionRule>();
+
+            foreach (var entry in response.Data)
+                rules.Add(new RetentionRule(entry));
+
+            return rules.ToArray();
+        }
+
+        return null;
+    }
+}