"""
Standalone test for the SendGrid email flow.
Tests both EmailChannel.is_configured() and EmailChannel.send() directly.

Usage:
    cd cuatrolabs-notification-ms
    python test_email_flow.py --to recipient@example.com
"""
import asyncio
import argparse
import sys

# ---------------------------------------------------------------------------
# Config — edit these or pass via CLI args
# ---------------------------------------------------------------------------
TEST_CONFIG = {
    "enabled": True,
    "api_key": "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",
    "from_email": "no-reply@example.com",
    "from_name": "Cuatro Notifications",
    "reply_to": "support@example.com",
}

TEST_TEMPLATE_DATA = {
    "subject": "Test Email — Cuatro Notification MS",
    "body": "Hello {{ name }},\n\nThis is a test email from the Cuatro notification service.\n\nRegards,\nCuatro Team",
    "html_body": "<p>Hello <strong>{{ name }}</strong>,</p><p>This is a <em>test email</em> from the Cuatro notification service.</p><p>Regards,<br>Cuatro Team</p>",
    "name": "Test User",
}
# ---------------------------------------------------------------------------


async def run_test(recipient: str):
    # Patch sys.path so we can import app modules without installing the package
    import os
    sys.path.insert(0, os.path.dirname(__file__))

    # Minimal stub for app.core.logging so we don't need the full app stack
    import types
    import logging

    logging.basicConfig(level=logging.INFO, format="%(levelname)s  %(message)s")

    core_mod = types.ModuleType("app.core")
    core_logging_mod = types.ModuleType("app.core.logging")
    core_logging_mod.get_logger = lambda name: logging.getLogger(name)
    sys.modules.setdefault("app", types.ModuleType("app"))
    sys.modules["app.core"] = core_mod
    sys.modules["app.core.logging"] = core_logging_mod

    from app.channels.email import EmailChannel

    print("\n=== SendGrid Email Flow Test ===\n")

    # 1. is_configured check
    configured = EmailChannel.is_configured(TEST_CONFIG)
    print(f"[1] is_configured: {'✓ PASS' if configured else '✗ FAIL'}")
    if not configured:
        print("    Channel config is missing required fields (enabled, api_key, from_email).")
        return

    # 2. Send test email
    print(f"[2] Sending email to: {recipient}")
    success, message, provider_id = await EmailChannel.send(
        recipient=recipient,
        template_name="test_notification",
        template_data=TEST_TEMPLATE_DATA,
        channel_config=TEST_CONFIG,
    )

    status = "✓ PASS" if success else "✗ FAIL"
    print(f"    Result  : {status}")
    print(f"    Message : {message}")
    if provider_id:
        print(f"    Provider ID: {provider_id}")

    # 3. Misconfigured channel test (should fail gracefully)
    print("\n[3] Testing misconfigured channel (no api_key)...")
    bad_config = {"enabled": True, "from_email": "no-reply@example.com"}
    configured_bad = EmailChannel.is_configured(bad_config)
    print(f"    is_configured with missing api_key: {'✗ FAIL (should be False)' if configured_bad else '✓ PASS (correctly False)'}")

    # 4. Disabled channel test
    print("\n[4] Testing disabled channel...")
    disabled_config = {**TEST_CONFIG, "enabled": False}
    configured_disabled = EmailChannel.is_configured(disabled_config)
    print(f"    is_configured when disabled: {'✗ FAIL (should be False)' if configured_disabled else '✓ PASS (correctly False)'}")

    print("\n=== Done ===\n")


if __name__ == "__main__":
    parser = argparse.ArgumentParser(description="Test SendGrid email flow")
    parser.add_argument(
        "--to",
        required=True,
        help="Recipient email address for the test send",
    )
    args = parser.parse_args()
    asyncio.run(run_test(args.to))