import pytest

import config


@pytest.fixture
def env_file(tmp_path, monkeypatch):
    for name in tuple(config.os.environ):
        if name.startswith("N8N_"):
            monkeypatch.delenv(name)
    path = tmp_path / ".env"
    monkeypatch.setattr(config, "ENV_FILE", path)
    return path


def test_file_loads_from_other_working_directory(env_file, tmp_path, monkeypatch):
    env_file.write_text(
        'N8N_CHAT_WEBHOOK_URL="https://example.com/chat"\n'
        'N8N_UPLOAD_WEBHOOK_URL=https://example.com/upload\n'
        'N8N_CHAT_TIMEOUT_SECONDS=15\nN8N_MAX_FILE_BYTES=2048\n',
        encoding="utf-8-sig",
    )
    elsewhere = tmp_path / "elsewhere"
    elsewhere.mkdir()
    monkeypatch.chdir(elsewhere)
    settings = config.Settings.from_env()
    assert settings.chat_webhook_url == "https://example.com/chat"
    assert settings.upload_webhook_url == "https://example.com/upload"
    assert settings.chat_timeout_seconds == 15
    assert settings.max_file_bytes == 2048


def test_environment_overrides_file(env_file, monkeypatch):
    env_file.write_text("N8N_CHAT_WEBHOOK_URL=https://example.com/file\n")
    monkeypatch.setenv("N8N_CHAT_WEBHOOK_URL", "https://example.com/environment")
    assert config.Settings.from_env().chat_webhook_url.endswith("/environment")


def test_missing_file_uses_defaults(env_file):
    assert config.Settings.from_env() == config.Settings()


def test_invalid_file_setting_has_friendly_error(env_file):
    env_file.write_text("N8N_CHAT_TIMEOUT_SECONDS=abc\n")
    with pytest.raises(config.ConfigurationError, match="числовые"):
        config.Settings.from_env()