added user images partitioning

config/paths.py

@@ -0,0 +1,27 @@
+# python
+# file: config/paths.py
+import os
+
+# Constant directory names
+DATA_DIR_NAME = 'data'
+TEST_DATA_DIR_NAME = 'test_data'
+
+# Project root (two levels up from this file)
+PROJECT_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+
+def get_database_dir(db_env: str | None = None) -> str:
+    """
+    Return the absolute base directory path for the given DB env.
+    db_env: 'prod' uses `data/db`, anything else uses `test_data/db`.
+    """
+    env = (db_env or os.environ.get('DB_ENV', 'prod')).lower()
+    base_name = DATA_DIR_NAME if env == 'prod' else TEST_DATA_DIR_NAME
+    return os.path.join(PROJECT_ROOT, base_name, 'db')
+
+def get_user_image_dir(username: str | None) -> str:
+    """
+    Return the absolute directory path for storing images for a specific user.
+    """
+    if username:
+        return os.path.join(PROJECT_ROOT, DATA_DIR_NAME, 'images', username)
+    return os.path.join(PROJECT_ROOT, 'resources', 'images')