import os
import json
from app.providers.whatsapp_cloud import WhatsAppCloudProvider


def main() -> None:
    to_number = os.getenv("WHATSAPP_TEST_TO", "")
    if not to_number:
        raise SystemExit("ERROR: Set WHATSAPP_TEST_TO to an E.164 number (e.g., 14155552671 or +14155552671)")

    template_name = os.getenv("WHATSAPP_TEMPLATE_NAME", "hello_world")
    template_language = os.getenv("WHATSAPP_TEMPLATE_LANGUAGE", "en_US")
    first_name = os.getenv("WHATSAPP_TEST_FIRST_NAME", "Friend")

    # Determine template body based on template name
    # hello_world has NO variables (no {{...}})
    # custom_hello_world has {{first_name}}
    if template_name == "hello_world":
        template_body = "Hello World"  # No variables
        variables = {}
    else:
        template_body = "Hello {{first_name}}, welcome!"  # Has variable
        variables = {"first_name": first_name}

    print(f"\n{'='*70}")
    print(f"WhatsApp Cloud Template Debug Test")
    print(f"{'='*70}")
    print(f"Phone Number: {to_number}")
    print(f"Template Name: {template_name}")
    print(f"Template Language: {template_language}")
    print(f"Template Body: {template_body}")
    print(f"Variables: {variables}")
    print(f"{'='*70}\n")

    try:
        provider = WhatsAppCloudProvider()
        message_id = provider.send_message(
            to=to_number,
            template_name=template_name,
            template_body=template_body,
            variables=variables,
            language=template_language
        )
        print(f"✅ SUCCESS: Message sent with ID: {message_id}\n")
        return 0
    except Exception as e:
        print(f"❌ FAILED: {str(e)}\n")
        return 1


if __name__ == "__main__":
    exit(main())