import unittest
from unittest.mock import patch

import paypal_flow


class _FakeInput:
    def __init__(self):
        self.filled = []
        self.first = self

    def fill(self, value):
        self.filled.append(value)


class _FakePage:
    def __init__(self, url):
        self.url = url
        self.email_input = _FakeInput()

    def wait_for_load_state(self, *_args, **_kwargs):
        return None

    def wait_for_timeout(self, *_args, **_kwargs):
        return None

    def locator(self, selector):
        if "input#email" in selector:
            return self.email_input
        raise AssertionError(f"unexpected selector: {selector}")


class EnsureCheckoutwebTests(unittest.TestCase):
    def test_pay_url_with_password_still_tries_next_first(self):
        page = _FakePage("https://www.paypal.com/pay?token=abc")

        with patch("paypal_flow.detect_landing_state", side_effect=[
            {
                "kind": "login_email_password",
                "email_count": 1,
                "password_count": 1,
                "url": page.url,
            },
            {
                "kind": "checkoutweb",
                "email_count": 0,
                "password_count": 0,
                "url": "https://www.paypal.com/checkoutweb/signup?token=abc",
            },
        ]), patch("paypal_flow.click_login_next", return_value=True) as click_next, patch(
            "paypal_flow.click_create_account", return_value=False
        ) as click_create:
            result = paypal_flow.ensure_checkoutweb(
                page,
                fallback_email="trial@example.com",
                log=lambda *_: None,
            )

        self.assertEqual(result, "login")
        self.assertEqual(page.email_input.filled, ["trial@example.com"])
        click_next.assert_called_once()
        click_create.assert_not_called()

    def test_pay_url_falls_back_to_create_account_when_next_does_not_enter_checkoutweb(self):
        page = _FakePage("https://www.paypal.com/pay?token=abc")

        with patch("paypal_flow.detect_landing_state", side_effect=[
            {
                "kind": "login_email_password",
                "email_count": 1,
                "password_count": 1,
                "url": page.url,
            },
            {
                "kind": "login_email_password",
                "email_count": 1,
                "password_count": 1,
                "url": page.url,
            },
        ]), patch("paypal_flow.click_login_next", return_value=False) as click_next, patch(
            "paypal_flow.click_create_account", return_value=True
        ) as click_create, patch("paypal_flow.wait_for_checkoutweb", return_value=True):
            result = paypal_flow.ensure_checkoutweb(
                page,
                fallback_email="trial@example.com",
                log=lambda *_: None,
            )

        self.assertEqual(result, "create")
        self.assertEqual(page.email_input.filled, ["trial@example.com"])
        click_next.assert_called_once()
        click_create.assert_called_once()


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