import json
from pathlib import Path
from unittest.mock import MagicMock

import pytest

from teampulse.resolver import Resolver


@pytest.fixture
def cache_path(tmp_path):
    return tmp_path / "cache.json"


def test_resolve_returns_email_from_cache(cache_path):
    cache_path.write_text(json.dumps({"Max Mustermann": "m.mustermann@company.com"}))
    resolver = Resolver(cache_path=cache_path, page=MagicMock())
    assert resolver.resolve("Max Mustermann") == "m.mustermann@company.com"


def test_resolve_unknown_name_calls_browser(cache_path):
    cache_path.write_text(json.dumps({}))
    mock_page = MagicMock()
    resolver = Resolver(cache_path=cache_path, page=mock_page)
    resolver._extract_email_from_profile = MagicMock(return_value="k.huber@company.com")

    result = resolver.resolve("Klaus Huber")

    resolver._extract_email_from_profile.assert_called_once_with("Klaus Huber")
    assert result == "k.huber@company.com"


def test_resolve_caches_newly_resolved_email(cache_path):
    cache_path.write_text(json.dumps({}))
    resolver = Resolver(cache_path=cache_path, page=MagicMock())
    resolver._extract_email_from_profile = MagicMock(return_value="k.huber@company.com")

    resolver.resolve("Klaus Huber")

    saved = json.loads(cache_path.read_text())
    assert saved["Klaus Huber"] == "k.huber@company.com"


def test_resolve_unresolvable_returns_placeholder(cache_path):
    cache_path.write_text(json.dumps({}))
    resolver = Resolver(cache_path=cache_path, page=MagicMock())
    resolver._extract_email_from_profile = MagicMock(return_value=None)

    result = resolver.resolve("Unknown Person")
    assert result == "<nicht auflösbar>"


def test_resolve_does_not_cache_unresolvable(cache_path):
    cache_path.write_text(json.dumps({}))
    resolver = Resolver(cache_path=cache_path, page=MagicMock())
    resolver._extract_email_from_profile = MagicMock(return_value=None)

    resolver.resolve("Unknown Person")

    saved = json.loads(cache_path.read_text())
    assert "Unknown Person" not in saved


def test_creates_cache_file_if_missing(tmp_path):
    cache_path = tmp_path / "nonexistent.json"
    resolver = Resolver(cache_path=cache_path, page=MagicMock())
    resolver._extract_email_from_profile = MagicMock(return_value="a@b.com")
    resolver.resolve("Test User")
    assert cache_path.exists()