work

modules/tile_gen/tile_gen_lib/get_version_shared.py

@@ -0,0 +1,48 @@
+"""
+This file is shared / symlinked between tile_gen_lib and http_host_lib
+"""
+
+from datetime import datetime, timezone
+
+import requests
+
+
+def get_versions_for_area(area: str) -> list:
+    """
+    Download the files.txt and check for the runs with the "done" file present
+    """
+    r = requests.get('https://btrfs.openfreemap.com/files.txt', timeout=30)
+    r.raise_for_status()
+
+    versions = []
+
+    files = r.text.splitlines()
+    for f in files:
+        if not f.startswith(f'areas/{area}/'):
+            continue
+        if not f.endswith('/done'):
+            continue
+        version_str = f.split('/')[2]
+        versions.append(version_str)
+
+    return sorted(versions)
+
+
+def get_deployed_version(area: str) -> dict:
+    r = requests.get(f'https://assets.openfreemap.com/deployed_versions/{area}.txt', timeout=30)
+    r.raise_for_status()
+    version = r.text.strip()
+
+    last_modified_str = r.headers.get('Last-Modified')
+    last_modified = parse_http_last_modified(last_modified_str)
+
+    return dict(
+        version=version,
+        last_modified=last_modified,
+    )
+
+
+def parse_http_last_modified(date_string) -> datetime:
+    parsed_date = datetime.strptime(date_string, '%a, %d %b %Y %H:%M:%S GMT')
+    parsed_date = parsed_date.replace(tzinfo=timezone.utc)
+    return parsed_date