[templates] Add version and commit to footer

vrobbler/context_processors.py

@@ -0,0 +1,31 @@
+import subprocess
+from pathlib import Path
+
+
+def version_info(request):
+    PROJECT_ROOT = Path(__file__).resolve().parent.parent
+    try:
+        commit = (
+            subprocess.check_output(
+                ["git", "rev-parse", "--short", "HEAD"],
+                cwd=PROJECT_ROOT,
+                stderr=subprocess.DEVNULL,
+            )
+            .decode("utf-8")
+            .strip()
+        )
+    except (subprocess.SubprocessError, FileNotFoundError):
+        commit = "unknown"
+
+    try:
+        pyproject = PROJECT_ROOT / "pyproject.toml"
+        version = "unknown"
+        if pyproject.exists():
+            for line in pyproject.read_text().splitlines():
+                if line.startswith("version = "):
+                    version = line.split("=")[1].strip().strip('"')
+                    break
+    except Exception:
+        version = "unknown"
+
+    return {"app_version": version, "git_commit": commit}