perf(anki): skip unchanged files using file hashes

src/anki/file_handler.py

@@ -1,24 +1,29 @@
-import os.path
+import hashlib
+
+from pathlib import Path
 from typing import List
 
 import tree_sitter
 
 
 class FileHandler:
-    file_path: str
+    file_path: Path
     file_content: List[str]
 
-    def __init__(self, path):
+    def __init__(self, path: Path):
         self.file_path = path
         self.read()
 
     @property
-    def directory_path(self) -> str:
-        return os.path.dirname(self.file_path)
+    def directory_path(self) -> Path:
+        return self.file_path.parent
 
     def get_bytes(self) -> bytes:
         return bytes("".join(self.file_content), encoding="utf-8")
 
+    def get_file_hash(self) -> str:
+        return hashlib.md5("".join(self.file_content).encode(), usedforsecurity=False).hexdigest()
+
     def get_node_content(self, node: tree_sitter.Node, remove_outer=False):
         content = "".join(
             self.file_content[node.start_point.row:node.end_point.row + 1]
@@ -37,9 +42,9 @@ class FileHandler:
         self.file_content = new_lines
 
     def read(self):
-        with open(self.file_path, encoding="utf-8") as f:
+        with self.file_path.open(encoding="utf-8") as f:
             self.file_content = f.readlines()
 
     def write(self):
-        with open(self.file_path, "w", encoding="utf-8") as f:
+        with self.file_path.open("w", encoding="utf-8") as f:
             f.writelines(self.file_content)