import os
import requests
import zipfile

MODEL_URL = "https://alphacephei.com/vosk/models/vosk-model-vn-0.4.zip"
MODEL_DIR = "model"
MODEL_PATH = os.path.join(MODEL_DIR, "vosk-model")

if not os.path.exists(MODEL_PATH):
    os.makedirs(MODEL_DIR, exist_ok=True)

    zip_path = os.path.join(MODEL_DIR, "model.zip")

    print("📥 Đang tải model Vosk...")
    response = requests.get(MODEL_URL, stream=True)
    with open(zip_path, "wb") as f:
        for chunk in response.iter_content(chunk_size=8192):
            f.write(chunk)

    print("📦 Giải nén model...")
    with zipfile.ZipFile(zip_path, "r") as zip_ref:
        zip_ref.extractall(MODEL_DIR)

    os.rename(os.path.join(MODEL_DIR, "vosk-model-vn-0.4"), MODEL_PATH)
    os.remove(zip_path)  # Xóa file zip sau khi giải nén

    print("✅ Model đã tải thành công!")
else:
    print("✅ Model đã có sẵn, bỏ qua tải về.")