import json

import pytest

from api import profile


@pytest.fixture(autouse=True)
def chrome_155(monkeypatch):
	monkeypatch.setattr(profile, "chrome_major", lambda: "155")


def test_passed_user_agent_is_saved_once(tmp_path):
	first = profile.load_or_create(tmp_path, "First/1")
	second = profile.load_or_create(tmp_path, "Second/2")

	assert first == second == {"user_agent": "First/1"}
	assert json.loads((tmp_path / profile.SETTINGS_FILE).read_text()) == {"user_agent": "First/1"}


def test_generated_fingerprint_without_user_agent(tmp_path):
	settings = profile.load_or_create(tmp_path, None)

	assert settings["user_agent"] == profile.UA_TEMPLATE.format(major="155")
	screen = settings["fingerprint"]["screen"]
	assert screen["width"] >= profile.MIN_SCREEN[0] and screen["height"] >= profile.MIN_SCREEN[1]
	assert settings["fingerprint"]["device_scale_factor"] >= 1


def test_generated_fingerprint_is_stable_and_ignores_later_user_agent(tmp_path):
	first = profile.load_or_create(tmp_path, None)
	assert profile.load_or_create(tmp_path, None) == first
	assert profile.load_or_create(tmp_path, "Later/1") == first


def test_profiles_get_independent_fingerprints(tmp_path):
	"""Отпечатки генерируются независимо: из выборки профилей получается больше одного варианта."""
	variants = set()
	for i in range(30):
		d = tmp_path / str(i)
		d.mkdir()
		fp = profile.load_or_create(d, None)["fingerprint"]
		variants.add((fp["screen"]["width"], fp["screen"]["height"], fp["device_scale_factor"]))
	assert len(variants) > 1


def test_generate_falls_back_when_browserforge_fails(monkeypatch):
	class Failing:
		def generate(self, **kwargs):
			raise ValueError("Cannot generate headers")

	monkeypatch.setattr(profile, "FingerprintGenerator", Failing)
	fp = profile.generate_fingerprint(attempts=2)
	assert fp["screen"] == {"width": 1920, "height": 1080}
	assert fp["device_scale_factor"] == 1


def test_browser_kwargs():
	assert profile.browser_kwargs({"user_agent": "UA/1"}) == {"useragent": "UA/1"}
	kwargs = profile.browser_kwargs({
		"user_agent": "UA/1",
		"fingerprint": {"screen": {"width": 2560, "height": 1440}, "device_scale_factor": 1.25},
	})
	assert kwargs == {
		"useragent": "UA/1",
		"additional_args": {"screen": {"width": 2560, "height": 1440}, "device_scale_factor": 1.25},
	}