"""Masking helpers must never leak the original value."""

from __future__ import annotations

import pytest

from apps.profiles.privacy import mask_email, mask_emails, mask_phone, mask_phones


@pytest.mark.parametrize(
    ("raw", "expected"),
    [
        ("joseph.holland@garverusa.com", "jo************@garverusa.com"),
        # A single character local part is hidden completely - keeping it would
        # reveal the whole address.
        ("a@b.com", "*@b.com"),
    ],
)
def test_mask_email_keeps_domain_and_hides_local_part(raw: str, expected: str) -> None:
    masked = mask_email(raw)
    assert masked == expected
    assert masked.endswith("@" + raw.split("@")[1])


def test_mask_email_handles_garbage() -> None:
    assert mask_email("not-an-email") == "***"
    assert mask_email("") == "***"


def test_mask_phone_hides_the_middle() -> None:
    masked = mask_phone("+19402058928")
    assert masked.startswith("+1940")
    assert masked.endswith("28")
    assert "*" in masked
    assert "20589" not in masked


def test_mask_phone_rejects_short_input() -> None:
    assert mask_phone("+123") == "***"


def test_list_helpers_preserve_structure() -> None:
    emails = [{"address": "a.person@corp.com", "type": "professional"}]
    masked = mask_emails(emails)
    assert masked[0]["type"] == "professional"
    assert masked[0]["address"] != emails[0]["address"]
    assert mask_phones(["+19402058928"])[0] != "+19402058928"