added backup prune command

Author: breadlesscode

Classes/Command/BackupCommandController.php

@@ -56,7 +56,7 @@ public function restoreCommand(string $name, bool $noConfirm = false): void
         }
 
         if ($noConfirm === false) {
-            $shouldRestore = $this->output->askConfirmation('Are you sure you want to restore this Backup?', false);
+            $shouldRestore = $this->output->askConfirmation('Are you sure you want to restore this Backup? ', false);
         }
 
         if(!$shouldRestore) {
@@ -104,7 +104,7 @@ public function deleteCommand(string $name, bool $noConfirm = false): void
         $confirmed = true;
 
         if (!$noConfirm) {
-            $confirmed = $this->output->askConfirmation('Are you sure you want to delete this backup?');
+            $confirmed = $this->output->askConfirmation('Are you sure you want to delete this backup? ');
         }
 
         if (!$confirmed) {
@@ -123,6 +123,43 @@ public function deleteCommand(string $name, bool $noConfirm = false): void
         }
     }
 
+    /**
+     * deletes all backups, but can keep X latest backups
+     *
+     * @param int $keep keep the latest X backups
+     * @param bool $noConfirm If true, you dant have to confirm the delete action
+     */
+    public function pruneCommand(int $keep = 0, bool $noConfirm = false): void
+    {
+        $confirmed = true;
+
+        if (!$noConfirm) {
+            $question = ($keep > 0 ? ', except the latest '.$keep.' backups': '');
+            $question = 'Are you sure you want to delete all backups'.$question.'? ';
+            $confirmed = $this->output->askConfirmation($question);
+        }
+
+        if (!$confirmed) {
+            $this->outputLine();
+            $this->outputLine('<error>Canceled by user</error>');
+            $this->quit();
+        }
+
+        $backupCount = $this->backupService->getCount();
+        $backups = $this->backupService->getBackups($keep, $backupCount);
+
+        $this->output('Deleting '.($backupCount - $keep <= 0 ? '0': $backupCount - $keep).' backups...');
+
+        try {
+            foreach ($backups as $backup) {
+                $this->backupService->deleteBackup($backup['name']);
+            }
+            $this->outputLine('<success>success</success>');
+        } catch (\Exception $e) {
+            $this->outputError($e->getMessage());
+        }
+    }
+
     protected function outputError(string $message): void
     {
         $this->outputLine('<error>failed</error>');

Classes/Service/BackupIndexService.php

@@ -128,6 +128,11 @@ public function deleteBackup(string $name)
         return $success;
     }
 
+    public function getCount(): int
+    {
+        return $this->getReader()->count();
+    }
+
     public function getBackups(int $start = 0, int $limit = 25): array
     {
         $reader = $this->getReader();

Classes/Service/BackupService.php

@@ -191,6 +191,10 @@ public function getStepsInstances(string $backupPath, array $whiteList = null):
         return $steps;
     }
 
+    public function getCount(): int
+    {
+        return $this->indexService->getCount();
+    }
 
     public function noStepsConfigured(): bool
     {

Documentation/commands.md

@@ -49,3 +49,20 @@ Deletes a single backup.
 #### Options
 `--no-confirm` <br />
 If this flag is set, you dont have to confirm this action by pressing <kbd>Y</kbd> + <kbd>Return</kbd>. 
+
+
+
+### `backup:prune`
+
+Deletes all backups, but you can keep the latest X Backups with the `--keep` option.
+
+```bash
+./flow backup:prune
+```
+
+#### Options
+`--no-confirm` <br />
+If this flag is set, you dont have to confirm this action by pressing <kbd>Y</kbd> + <kbd>Return</kbd>. 
+
+`--keep x` <br />
+Keep the latest X Backups