import os
import requests

from services.dataset_service import DatasetService


class BillingService:
    base_url = os.environ.get('BILLING_API_URL', 'BILLING_API_URL')
    secret_key = os.environ.get('BILLING_API_SECRET_KEY', 'BILLING_API_SECRET_KEY')

    @classmethod
    def get_info(cls, tenant_id: str):
        params = {'tenant_id': tenant_id}

        billing_info = cls._send_request('GET', '/info', params=params)

        vector_size = DatasetService.get_tenant_datasets_usage(tenant_id)
        # Convert bytes to MB
        billing_info['vector_space']['size'] = int(vector_size / 1024 / 1024)

        return billing_info

    @classmethod
    def get_subscription(cls, plan: str, interval: str, prefilled_email: str = '', user_name: str = '', tenant_id: str = ''):
        params = {
            'plan': plan,
            'interval': interval,
            'prefilled_email': prefilled_email,
            'user_name': user_name,
            'tenant_id': tenant_id
        }
        return cls._send_request('GET', '/subscription', params=params)

    @classmethod
    def get_invoices(cls, prefilled_email: str = ''):
        params = {'prefilled_email': prefilled_email}
        return cls._send_request('GET', '/invoices', params=params)

    @classmethod
    def _send_request(cls, method, endpoint, json=None, params=None):
        headers = {
            "Content-Type": "application/json",
            "Billing-Api-Secret-Key": cls.secret_key
        }

        url = f"{cls.base_url}{endpoint}"
        response = requests.request(method, url, json=json, params=params, headers=headers)

        return response.json()

    @classmethod
    def process_event(cls, event: dict):
        json = {
            "content": event,
        }
        return cls._send_request('POST', '/webhook/stripe', json=json)