feat: add nix-collect-garbage job

selfprivacy_api/jobs/nix_collect_garbage.py

@@ -0,0 +1,32 @@
+import re
+import subprocess
+
+from selfprivacy_api.jobs import Job, JobStatus, Jobs
+from selfprivacy_api.utils.huey import huey
+
+
+@huey.task()
+def nix_collect_garbage(job: Job):
+
+    Jobs.update(
+        job=job,
+        status=JobStatus.RUNNING,
+        progress=0,
+        status_text="Start cleaning.",
+    )
+
+    output = subprocess.check_output("nix-collect-garbage -d")
+
+    pat = re.compile(r"linking saves ([+-]?\d+\.\d+ \w+).+?([+-]?\d+\.\d+ \w+) freed")
+    match = re.search(
+        pat,
+        output,
+    )
+
+    Jobs.update(
+        job=job,
+        status=JobStatus.FINISHED,
+        progress=100,
+        status_text="Сleaning completed.",
+        result=f"Currently hard linking saves {match.group(1)}, {match.group(2)} freed",
+    )