cleaning up entry internals

src/ytdl_sub/downloaders/info_json/info_json_downloader.py

@@ -10,7 +10,6 @@ from ytdl_sub.config.overrides import Overrides
 from ytdl_sub.config.validators.options import OptionsDictValidator
 from ytdl_sub.downloaders.source_plugin import SourcePlugin
 from ytdl_sub.downloaders.ytdl_options_builder import YTDLOptionsBuilder
-from ytdl_sub.entries.entry import YTDL_SUB_ENTRY_VARIABLES_KWARG_KEY
 from ytdl_sub.entries.entry import Entry
 from ytdl_sub.entries.script.variable_definitions import VARIABLES
 from ytdl_sub.entries.script.variable_definitions import VariableDefinitions
@@ -107,10 +106,7 @@ class InfoJsonDownloader(SourcePlugin[InfoJsonDownloaderOptions]):
 
             # See if prior variables exist. If so, delete them from metadata
             # to avoid saving them recursively on multiple updates
-            prior_variables = {}
-            if entry.kwargs_contains(YTDL_SUB_ENTRY_VARIABLES_KWARG_KEY):
-                prior_variables = entry.kwargs(YTDL_SUB_ENTRY_VARIABLES_KWARG_KEY)
-                del entry._kwargs[YTDL_SUB_ENTRY_VARIABLES_KWARG_KEY]
+            prior_variables = entry.maybe_get_prior_variables()
 
             entry.initialize_script(self.overrides).add(
                 {

src/ytdl_sub/entries/base_entry.py

@@ -80,26 +80,17 @@ class BaseEntry(ABC):
         """
         return self.kwargs_get(v.uploader_id.metadata_key, self.uid)
 
-    def kwargs_contains(self, key: str) -> bool:
-        """Returns whether internal kwargs contains the specified key"""
-        return key in self._kwargs
-
     def kwargs(self, key) -> Any:
         """Returns an internal kwarg value supplied from ytdl"""
-        if not self.kwargs_contains(key):
+        if key not in self._kwargs:
             raise KeyError(f"Expected '{key}' in {self.__class__.__name__} but does not exist.")
-        output = self._kwargs[key]
-
-        # Replace curly braces with unicode version to avoid variable shenanigans
-        if isinstance(output, str):
-            return output.replace("{", "｛").replace("}", "｝")
-        return output
+        return self._kwargs[key]
 
     def kwargs_get(self, key: str, default: Optional[Any] = None) -> Any:
         """
         Dict get on kwargs
         """
-        if not self.kwargs_contains(key) or self.kwargs(key) is None:
+        if key not in self._kwargs or self.kwargs(key) is None:
             return default
         return self.kwargs(key)
 

src/ytdl_sub/entries/entry.py

@@ -2,6 +2,7 @@ import copy
 import json
 import os
 from pathlib import Path
+from typing import Any
 from typing import Dict
 from typing import Optional
 from typing import Type
@@ -20,7 +21,7 @@ from ytdl_sub.validators.audo_codec_validator import VIDEO_CODEC_EXTS
 
 v: VariableDefinitions = VARIABLES
 
-YTDL_SUB_ENTRY_VARIABLES_KWARG_KEY: str = "ytdl_sub_entry_variables"
+_YTDL_SUB_ENTRY_VARIABLES_KWARG_KEY: str = "ytdl_sub_entry_variables"
 
 TypeT = TypeVar("TypeT")
 
@@ -131,7 +132,7 @@ class Entry(BaseEntry, Scriptable):
         Write the entry's _kwargs back into the info.json file as well as its source variables
         """
         kwargs_dict = copy.deepcopy(self._kwargs)
-        kwargs_dict["ytdl_sub_entry_variables"] = self.to_dict()
+        kwargs_dict[_YTDL_SUB_ENTRY_VARIABLES_KWARG_KEY] = self.to_dict()
         kwargs_json = json.dumps(kwargs_dict, ensure_ascii=False, sort_keys=True, indent=2)
 
         with open(self.get_download_info_json_path(), "w", encoding="utf-8") as file:
@@ -174,6 +175,18 @@ class Entry(BaseEntry, Scriptable):
 
         return file_exists
 
+    def maybe_get_prior_variables(self) -> Dict[str, Any]:
+        """
+        If variables exist in the .info.json from a prior run, delete them
+        from kwargs (to prevent nested writes) and return them
+        """
+        maybe_prior_variables: Dict[str, Any] = {}
+        if _YTDL_SUB_ENTRY_VARIABLES_KWARG_KEY in self._kwargs:
+            maybe_prior_variables = self._kwargs[_YTDL_SUB_ENTRY_VARIABLES_KWARG_KEY]
+            del self._kwargs[_YTDL_SUB_ENTRY_VARIABLES_KWARG_KEY]
+
+        return maybe_prior_variables
+
     @final
     def to_dict(self) -> Dict[str, str]:
         """

src/ytdl_sub/entries/script/variable_scripts.py

@@ -163,7 +163,9 @@ ENTRY_DERIVED_VARIABLES: Dict[Variable, str] = {
     v.upload_date_index_padded: _pad_int(v.upload_date_index, 2),
     v.upload_date_index_reversed: f"{{%sub(100, {v.upload_date_index.variable_name})}}",
     v.upload_date_index_reversed_padded: _pad_int(v.upload_date_index_reversed, 2),
-    v.playlist_index_reversed: f"{{%sub({v.playlist_count.variable_name}, {v.playlist_index.variable_name}, -1)}}",
+    v.playlist_index_reversed: (
+        f"{{%sub({v.playlist_count.variable_name}, {v.playlist_index.variable_name}, -1)}}"
+    ),
     v.playlist_index_padded: _pad_int(v.playlist_index, 2),
     v.playlist_index_reversed_padded: _pad_int(v.playlist_index_reversed, 2),
     v.playlist_index_padded6: _pad_int(v.playlist_index, 6),

tests/unit/entries/test_entry.py

@@ -19,7 +19,6 @@ class TestEntry(object):
         key = "dne"
         expected_error_msg = f"Expected '{key}' in Entry but does not exist."
 
-        assert mock_entry.kwargs_contains(key) is False
         with pytest.raises(KeyError, match=expected_error_msg):
             mock_entry.kwargs(key)