chore: finish icons builder

- finish icons builder in scripts.

scripts/build_icons.py

@@ -1,51 +1,53 @@
-import logging
+import logging, os
 from pathlib import Path
 import common
+from common import AssetKind
 import PIL, PIL.Image
 
-# the config for thumbnail
+# The HW size of thumbnail
 THUMBNAIL_SIZE: int = 16
 
-class ThumbnailBuilder():
 
-    def __init__(self):
-        pass
+def _create_thumbnail(src_file: Path, dst_file: Path) -> None:
+    # open image
+    src_image: PIL.Image.Image = PIL.Image.open(src_file)
+    # create thumbnail
+    src_image.thumbnail((THUMBNAIL_SIZE, THUMBNAIL_SIZE))
+    # save to new file
+    src_image.save(dst_file)
 
-    def build_thumbnails(self) -> None:
-        # get folder path
-        root_folder = common.get_root_folder()
 
-        # prepare handler
-        def folder_handler(rel_name: str, src_folder: Path, dst_folder: Path) -> None:
-            # just create folder
-            logging.info(f'Creating Folder: {src_folder} -> {dst_folder}')
-            dst_folder.mkdir(parents=False, exist_ok=True)
-        def file_handler(rel_name: str, src_file: Path, dst_file: Path) -> None:
-            # skip non-image
-            if src_file.suffix != '.png': return
-            # call thumbnail func
-            logging.info(f'Building Thumbnail: {src_file} -> {dst_file}')
-            self.__resize_image(src_file, dst_file)
+def build_icons() -> None:
+    raw_icons_dir = common.get_raw_assets_folder(AssetKind.Icons)
+    plg_icons_dir = common.get_plugin_assets_folder(AssetKind.Icons)
 
-        # call common processor
-        common.common_file_migrator(
-            root_folder / 'raw_icons',
-            root_folder / 'icons',
-            folder_handler,
-            file_handler
-        )
+    # TODO: If we have Python 3.12, use Path.walk instead of current polyfill.
 
-        logging.info('Building thumbnail done.')
+    # Icon assets has subdirectory, so we need use another way to process.
+    for root, dirs, files in os.walk(raw_icons_dir):
+        root = Path(root)
+
+        # Iterate folders
+        for name in dirs:
+            # Fetch directory path
+            raw_icon_subdir = root / name
+            plg_icon_subdir = plg_icons_dir / raw_icon_subdir.relative_to(raw_icons_dir)
+            # Show message
+            logging.info(f'Creating Folder: {raw_icon_subdir} -> {plg_icon_subdir}')
+            # Create directory
+            plg_icon_subdir.mkdir(parents=True, exist_ok=True)
+
+        # Iterate files
+        for name in files:
+            # Fetch file path
+            raw_icon_file = root / name
+            plg_icon_file = plg_icons_dir / raw_icon_file.relative_to(raw_icons_dir)
+            # Show message
+            logging.info(f'Building Thumbnail: {raw_icon_file} -> {plg_icon_file}')
+            # Create thumbnail
+            _create_thumbnail(raw_icon_file, plg_icon_file)
 
-    def __resize_image(self, src_file: Path, dst_file: Path) -> None:
-        # open image
-        src_image: PIL.Image.Image = PIL.Image.open(src_file)
-        # create thumbnail
-        src_image.thumbnail((THUMBNAIL_SIZE, THUMBNAIL_SIZE))
-        # save to new file
-        src_image.save(dst_file)
 
 if __name__ == '__main__':
     common.setup_logging()
-    thumbnail_builder = ThumbnailBuilder()
-    thumbnail_builder.build_thumbnails()
+    build_icons()