refactoring for helper functions

src/pycage/helpers.py

@@ -0,0 +1,59 @@
+from __future__ import annotations
+
+import os
+import shutil
+import stat
+from pathlib import Path
+
+import click
+
+from pycage import config, helpers
+
+
+def print_error(
+    error: Exception,
+) -> None:
+    click.echo(f"During the procedure the following exception occurred: {error}", err=True)
+
+
+def path_verify_existence(path: Path) -> None:
+    if not path.exists():
+        raise FileNotFoundError(f"Path does not exist: >{path}<")
+
+
+def path_verify_directory(path: Path) -> None:
+    if not path.is_dir():
+        raise ValueError(f"Path is not a directory: >{path}<")
+
+
+def delete_folder_recursively(
+    folder: Path,
+    verbose: bool = False,
+) -> None:
+    if not folder.exists():
+        return
+
+    if verbose:
+        print(
+            f"Target folder with name >{folder.name}< already exists and "
+            "is deleted automatically."
+        )
+
+    path_verify_directory(folder)
+    if not folder.is_absolute():
+        folder = folder.absolute()
+
+    if not os.access(folder, os.W_OK):
+        os.chmod(folder, stat.S_IWUSR)
+    shutil.rmtree(folder)
+
+
+def get_interpreter() -> Path:
+    exec_interp = config.CFG.os_info.INTERPRETER
+    pth_int = Path.cwd() / "python" / exec_interp
+    try:
+        helpers.path_verify_existence(pth_int)
+    except FileNotFoundError as err:
+        raise RuntimeError("Base interpreter not found") from err
+
+    return pth_int