Remove usage of distutils (GH-16)

Co-authored-by: gvangool <[email protected]>
Co-authored-by: ArtyomVancyan <[email protected]>

Author: ArtyomVancyan

src/django_mermaid/apps.py

@@ -1,8 +1,4 @@
-from distutils import dir_util
-from os import stat
-from os.path import dirname
-from os.path import exists
-from os.path import join
+import pathlib
 from urllib.request import urlretrieve
 
 from django.apps import AppConfig
@@ -18,9 +14,11 @@ def ready(self):
         """Download mermaid.js from CDN if not already present"""
         version = getattr(settings, "MERMAID_VERSION", DEFAULT_VERSION)
         cdn = "https://cdnjs.cloudflare.com/ajax/libs/mermaid/%s/mermaid.min.js" % version
-        static_dir = join(dirname(__file__), "static")
-        mermaid_dir = join(static_dir, "mermaid", version)
-        if not exists(join(mermaid_dir, "mermaid.js")) or \
-                stat(join(mermaid_dir, "mermaid.js")).st_size == 0:
-            dir_util.create_tree(mermaid_dir, ["mermaid.js"])
-            urlretrieve(cdn, join(mermaid_dir, "mermaid.js"))
+        current_dir = pathlib.Path(__file__).parent
+        static_dir = current_dir / "static"
+        mermaid_dir = static_dir / "mermaid" / version
+        mermaid_js = mermaid_dir / "mermaid.js"
+        if not mermaid_js.exists() or \
+               mermaid_js.stat().st_size == 0:
+            mermaid_dir.mkdir(parents=True, exist_ok=True)
+            urlretrieve(cdn, str(mermaid_js))