feat(anidb_cache): add cache mechanism to fetch data efficiently

Added caching mechanism to store and retrieve AniDB API responses for efficient data fetching. This reduces redundant requests and improves performance by utilizing cached data when available. Cache files are stored in a directory named 'anidb_cache', and each entry is identified by the anime ID (aid). The cache validity period is set at 24 hours, ensuring that outdated information is refreshed regularly.

rename.py

@@ -5,8 +5,13 @@ import sys
 import requests
 import xml.etree.ElementTree as ET
 import argparse
+import json
+import time
+from datetime import datetime, timedelta
 
 HISTORY_FILE = "regex_history.txt"
+CACHE_DIR = "anidb_cache"
+CACHE_EXPIRY_SECONDS = 86400  # 24 hours in seconds
 
 # ==============================================================================
 # CORE LOGIC (GUI-agnostic)
@@ -27,6 +32,27 @@ def fetch_anidb_data_core(folder_path):
     
     aid = match.group(1)
     
+    # Check if cache exists and is valid
+    cache_file = os.path.join(CACHE_DIR, f"{aid}.json")
+    cache_data = None
+    
+    if os.path.exists(cache_file):
+        try:
+            with open(cache_file, 'r', encoding='utf-8') as f:
+                cache_data = json.load(f)
+            
+            # Check if cache is still valid (not expired)
+            cache_timestamp = cache_data.get('timestamp', 0)
+            if cache_timestamp > time.time() - CACHE_EXPIRY_SECONDS:
+                episodes = cache_data.get('episodes', [])
+                if episodes:
+                    # Sort episodes by number
+                    episodes.sort(key=lambda x: x[0])
+                    return episodes, None
+        except (IOError, json.JSONDecodeError, KeyError):
+            # If cache is corrupted, continue to fetch fresh data
+            pass
+    
     # Fetch XML from AniDB API
     url = f"http://api.anidb.net:9001/httpapi?request=anime&client=testdesktop&clientver=1&protover=1&aid={aid}"
     try:
@@ -85,6 +111,24 @@ def fetch_anidb_data_core(folder_path):
     
     # Sort episodes by number
     episodes.sort(key=lambda x: x[0])
+    
+    # Save to cache
+    try:
+        # Create cache directory if it doesn't exist
+        os.makedirs(CACHE_DIR, exist_ok=True)
+        
+        cache_info = {
+            'aid': aid,
+            'timestamp': time.time(),
+            'episodes': episodes
+        }
+        
+        with open(cache_file, 'w', encoding='utf-8') as f:
+            json.dump(cache_info, f, indent=2)
+    except IOError:
+        # Cache save failure is not critical, continue with episodes
+        pass
+    
     return episodes, None
 
 def format_titles_from_episodes(episodes):