Refactor Steam AppList lookup and caching logic

NSLGameScanner.py

@@ -453,23 +453,40 @@ def get_steam_store_appid(steam_store_game_name):
     # Fallback using Steam AppList (cached)
     global steam_applist_cache
     if steam_applist_cache is None:
+        steam_applist_cache = {}
+
+    def normalize_name(name):
+        name = name.lower()
+        name = re.sub(r'[®™]', '', name)
+        name = ' '.join(name.split())
+        return name
+
+    if steam_store_game_name not in steam_applist_cache:
+        time.sleep(0.5)  # Small delay to avoid spamming Steam
+        query = urllib.parse.quote(steam_store_game_name)
+        url = f"https://store.steampowered.com/api/storesearch/?term={query}&l=english&cc=US"
         try:
-            STEAM_BASE_URL = "https://api.steampowered.com"
-            app_list_url = f"{STEAM_BASE_URL}/ISteamApps/GetAppList/v2/"
-            response = requests.get(app_list_url)
+            response = requests.get(url, timeout=10)
             response.raise_for_status()
-            steam_applist_cache = response.json()['applist']['apps']
-            print("Cached Steam app list from Steam API.")
+            data = response.json()
         except requests.exceptions.RequestException as e:
-            print(f"Steam AppList fallback failed for {steam_store_game_name}: {e}")
+            print(f"Fallback Steam lookup failed for {steam_store_game_name}: {e}")
             return None
 
-    for app in steam_applist_cache:
-        if steam_store_game_name.lower() in app['name'].lower():
-            print(f"Found App ID for {steam_store_game_name} via cached Steam AppList: {app['appid']}")
-            return app['appid']
+        target = normalize_name(steam_store_game_name)
+        fallback_appid = None
+        for item in data.get("items", []):
+            if normalize_name(item.get("name", "")) == target:
+                fallback_appid = str(item.get("id"))
+                break
 
-    print(f"No App ID found for {steam_store_game_name} in cached Steam AppList.")
+        steam_applist_cache[steam_store_game_name] = fallback_appid
+
+    if steam_applist_cache[steam_store_game_name]:
+        print(f"Found App ID for {steam_store_game_name} via fallback Steam search API: {steam_applist_cache[steam_store_game_name]}")
+        return steam_applist_cache[steam_store_game_name]
+
+    print(f"No App ID found for {steam_store_game_name} in fallback Steam search API.")
     return None