Make SubFox production-ready with parallel translation and UI controls

app/cache.py

@@ -0,0 +1,52 @@
+import os
+import json
+import hashlib
+import time
+from pathlib import Path
+
+CACHE_ROOT = Path("/data/cache")
+
+
+def _hash_key(source_lang: str, target_lang: str, text: str) -> str:
+    raw = f"{source_lang}:{target_lang}:{text.strip()}"
+    return hashlib.sha256(raw.encode("utf-8")).hexdigest()
+
+
+def _get_path(source_lang: str, target_lang: str, key: str) -> Path:
+    folder = CACHE_ROOT / f"{source_lang}_{target_lang}"
+    folder.mkdir(parents=True, exist_ok=True)
+    return folder / f"{key}.json"
+
+
+def get_cached(source_lang: str, target_lang: str, text: str):
+    key = _hash_key(source_lang, target_lang, text)
+    path = _get_path(source_lang, target_lang, key)
+
+    if not path.exists():
+        return None
+
+    try:
+        with open(path, "r", encoding="utf-8") as f:
+            data = json.load(f)
+            return data.get("translated")
+    except Exception:
+        return None
+
+
+def set_cache(source_lang: str, target_lang: str, text: str, translated: str, model: str):
+    key = _hash_key(source_lang, target_lang, text)
+    path = _get_path(source_lang, target_lang, key)
+
+    data = {
+        "source": text,
+        "translated": translated,
+        "model": model,
+        "created": int(time.time()),
+    }
+
+    tmp_path = path.with_suffix(".tmp")
+
+    with open(tmp_path, "w", encoding="utf-8") as f:
+        json.dump(data, f, ensure_ascii=False)
+
+    os.replace(tmp_path, path)