import os
import django
from django.conf import settings
from django.template.loader import render_to_string
from django.test import RequestFactory

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'config.settings')
django.setup()

from core.models import SystemSetting, Product, Customer, Sale, Category, PaymentMethod
from django.utils import timezone
import datetime

def test_render():
    factory = RequestFactory()
    request = factory.get('/')
    # Simulate a user
    from django.contrib.auth.models import User
    user = User.objects.first()
    request.user = user

    settings_obj = SystemSetting.objects.first()
    context = {
        'site_settings': settings_obj,
        'settings': settings_obj,
        'total_sales_amount': 0,
        'total_receivables': 0,
        'total_payables': 0,
        'total_sales_count': 0,
        'total_products': 0,
        'total_customers': 0,
        'monthly_labels': [],
        'monthly_data': [],
        'chart_labels': [],
        'chart_data': [],
        'category_labels': [],
        'category_data': [],
        'payment_labels': [],
        'payment_data': [],
        'top_products': [],
        'low_stock_count': 0,
        'low_stock_products': [],
        'expired_count': 0,
        'recent_sales': [],
    }
    
    try:
        html = render_to_string('core/index.html', context, request=request)
        print(f"Render successful, length: {len(html)}")
        if len(html) < 100:
            print("HTML is too short!")
            print(html)
    except Exception as e:
        print(f"Render failed: {e}")

if __name__ == "__main__":
    test_render()