From a55628ce35a7484161676ac971d33a7c4a22ca37 Mon Sep 17 00:00:00 2001
From: Piotr Dec <piotr_dec@msn.com>
Date: Tue, 7 Oct 2025 00:34:39 +0200
Subject: [PATCH] VCS service

---
 app/services/vcs.py | 28 ++++++++++++++++++++++++++++
 pyproject.toml      |  1 +
 2 files changed, 29 insertions(+)

diff --git a/app/services/vcs.py b/app/services/vcs.py
index e69de29..c137108 100644
--- a/app/services/vcs.py
+++ b/app/services/vcs.py
@@ -0,0 +1,28 @@
+from git import Repo, Remote
+
+from app.config import get_settings
+
+
+class GitService:
+  def __init__(self):
+    self._settings = get_settings()
+    self._repo = Repo(self._settings.git.directory)
+    self._origin: Remote = self._repo.remotes.origin
+
+  def get_modified_compose(self) -> str | None:
+    self._update()
+    return self._diff()
+
+  def _update(self):
+    self._origin.pull()
+
+  def _diff(self) -> str | None:
+    diff = self._repo.head.commit.diff("HEAD~1")
+    composes = [f for f in diff if f.a_path.endswith("docker-compose.yml")]
+    match len(composes):
+      case 0:
+        return None
+      case 1:
+        return composes[0].a_path
+      case _:
+        raise Exception("Multiple compose files modified")
diff --git a/pyproject.toml b/pyproject.toml
index c7db9ab..1b8f359 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,6 +11,7 @@ dependencies = [
     "jinja2>=3.1.4",
     "pydantic-settings>=2.4.0",
     "pyyaml>=6.0.2",
+    "gitpython>=3.1.45"
 ]
 
 [project.optional-dependencies]