"""
File: ai_translation.py — Optional module for future AI-powered translations.
Author: Tuomas Lähteenmäki
Version: 0.1.4
License: MIT
Description:
This module is intentionally lightweight and dependency-free.
It provides a clean interface for future expansion without affecting
the core functionality of the Self-Healing Localization Layer (SHLL).

Planned features for v0.2:
- Automatic translation of missing keys
- Batch translation tools
- Provider-specific adapters (OpenAI, Azure, etc.)
- CLI integration

For now, this module acts as a placeholder and safe extension point.
"""
import urllib.request
import urllib.parse  # Tämä puuttui aiemmasta koodistasi
import json

def translate_text(text, target_lang="fi", source_lang="en"):
    """Kääntää tekstin automaattisesti MyMemory API:n kautta."""
    if not text or target_lang == source_lang:
        return text

    try:
        langpair = f"{source_lang}|{target_lang}"
        encoded_text = urllib.parse.quote(text)
        url = f"https://api.mymemory.translated.net/get?q={encoded_text}&langpair={langpair}"
        
        # Lisätään User-Agent, jotta API ei hylkää kutsua
        req = urllib.request.Request(url, headers={'User-Agent': 'Mozilla/5.0 (SHL-Client)'})
        with urllib.request.urlopen(req, timeout=5) as response:
            data = json.loads(response.read().decode())
            translated = data["responseData"]["translatedText"]
            return translated if translated else text
    except Exception:
        return text

class AITranslator:
    """Placeholder class for future expansion."""
    def __init__(self, provider: str = "none"):
        self.provider = provider

    def batch_translate(self, items: dict, target_lang: str) -> dict:
        return items
