from typing import Optional
from dotenv import load_dotenv
from google.oauth2 import service_account
import vertexai
import os
import json
import base64

load_dotenv()

# TODO: fix it in spaces

VERTEXAI_PROJECT = os.environ["VERTEXAI_PROJECT"]


def decode_service_key():
    encoded_key = os.environ["GOOGLE_APPLICATION_CREDENTIALS"]
    original_service_key = json.loads(base64.b64decode(encoded_key).decode('utf-8'))
    return original_service_key


def initialize_vertexai_params(location: Optional[str] = "us-central1"):
    GOOGLE_APPLICATION_CREDENTIALS = decode_service_key()
    service_account.Credentials.from_service_account_file(
        filename=GOOGLE_APPLICATION_CREDENTIALS,
        scopes=["https://www.googleapis.com/auth/cloud-platform"],
    )
    vertexai.init(project=VERTEXAI_PROJECT, location=location)