first commit

Commands/BackupCommand.cs

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+using HanaToolbox.Cli;
+using HanaToolbox.Config;
+using HanaToolbox.Logging;
+using HanaToolbox.Services;
+
+namespace HanaToolbox.Commands;
+
+public static class BackupCommand
+{
+    public static async Task<int> RunAsync(CliArgs cli)
+    {
+        var log = new AppLogger(cli.Verbose);
+        try
+        {
+            var config = ConfigService.Load();
+            var sid    = string.IsNullOrWhiteSpace(cli.Sid) ? config.Hana.Sid : cli.Sid;
+            log.Step($"Starting backup (SID: {sid})...");
+            await ServiceFactory.CreateBackupService(log)
+                .RunAsync(config.Backup, config.Hana, sid);
+            return 0;
+        }
+        catch (Exception ex) { log.Error(ex.Message); return 1; }
+    }
+}