utils.py

import os
import requests
import tempfile
from transformers import pipeline

# Use a safe writable temporary directory
cache_dir = os.path.join(tempfile.gettempdir(), "hf_cache")
os.environ["HF_HOME"] = cache_dir
os.makedirs(cache_dir, exist_ok=True)

# Load GPT-2 safely into tmp directory
try:
    generator = pipeline(
        "text-generation",
        model="gpt2",
        cache_dir=cache_dir,
        local_files_only=False
    )
except Exception as e:
    generator = None
    print("⚠️ GPT-2 model loading failed:", e)


def generate_description(country_name):
    """
    Generate a simple English description about a country using GPT-2.
    """
    if not generator:
        return "⚠️ Model unavailable."

    try:
        prompt = f"Tell me about {country_name}."
        result = generator(prompt, max_length=100, do_sample=True)
        return result[0]["generated_text"].strip()
    except Exception as e:
        return f"⚠️ Error: {str(e)}"


def get_country_info(country_name):
    """
    Get basic country info using REST Countries API.
    """
    try:
        url = f"https://restcountries.com/v3.1/name/{country_name}"
        response = requests.get(url)
        data = response.json()[0]

        info = {
            "Name": data.get("name", {}).get("common", "N/A"),
            "Capital": ", ".join(data.get("capital", ["N/A"])),
            "Region": data.get("region", "N/A"),
            "Population": f'{data.get("population", 0):,}',
            "Languages": ", ".join(data.get("languages", {}).values())
        }
        return info
    except Exception as e:
        return {"error": f"⚠️ Failed to retrieve country data."}


def translate_to_bangla(text):
    """
    Translate English text to Bangla using LibreTranslate API.
    """
    try:
        response = requests.post(
            "https://libretranslate.com/translate",
            headers={"Content-Type": "application/json"},
            json={
                "q": text,
                "source": "en",
                "target": "bn",
                "format": "text"
            }
        )
        return response.json().get("translatedText", "⚠️ Translation failed.")
    except Exception:
        return "⚠️ Translation API error."