import importlib.util
import pathlib
import unittest
from email.message import EmailMessage


def load_hotmail_helper_module():
    module_path = pathlib.Path(__file__).resolve().parents[1] / "scripts" / "hotmail_helper.py"
    spec = importlib.util.spec_from_file_location("hotmail_helper", module_path)
    module = importlib.util.module_from_spec(spec)
    assert spec.loader is not None
    spec.loader.exec_module(module)
    return module


hotmail_helper = load_hotmail_helper_module()


class HotmailHelperMessageSelectionTest(unittest.TestCase):
    def test_select_latest_code_reads_code_from_full_body_when_preview_is_truncated(self):
        filler = "A" * 800
        verification_code = "731091"

        message = EmailMessage()
        message["Subject"] = "Your temporary ChatGPT login code"
        message["From"] = "noreply@tm.openai.com"
        message["To"] = "n20260420225606@a4sky.com"
        message["Date"] = "Tue, 21 Apr 2026 08:49:15 +0800"
        message.set_content(
            f"Your temporary ChatGPT login code\n{filler}\nEnter this temporary code to continue: {verification_code}\n"
        )

        normalized = hotmail_helper.normalize_message("1343", message.as_bytes(), "INBOX")
        selected = hotmail_helper.select_latest_code(
            [normalized],
            ["openai", "noreply", "chatgpt"],
            ["verify", "verification", "code", "login"],
            [],
            0,
            "n20260420225606@a4sky.com",
        )

        self.assertEqual(selected["code"], verification_code)
        self.assertEqual(selected["message"]["id"], "1343")


if __name__ == "__main__":
    unittest.main()