import pytest
from app import app
from unittest.mock import patch

@pytest.fixture
def client():
    app.config['TESTING'] = True
    with app.test_client() as client:
        with client.session_transaction() as sess:
            sess['_csrf_token'] = 'test-token'
        yield client

def test_home_page(client):
    response = client.get('/')
    assert response.status_code == 200
    assert b"Zomeravond" in response.data or b"Papklokken" in response.data

@patch('app.get_google_sheet')
def test_post_missing_fields(mock_get_sheet, client):
    response = client.post('/zomeravond', data={'_csrf_token': 'test-token'})
    assert b"Oeps! Bepaalde verplichte velden ontbreken" in response.data
    mock_get_sheet.return_value.append_row.assert_not_called()

@patch('app.get_google_sheet')
@patch('app.get_public_participants')
def test_post_success(mock_participants, mock_get_sheet, client):
    mock_participants.return_value = []
    
    data = {
        '_csrf_token': 'test-token',
        'klasse': 'Kajuitklasse',
        'zeilnummer': '123',
        'bootnaam': 'TestBoat',
        'naam': 'Test Name',
        'telefoonmobiel': '0612345678',
        'email': 'test@example.com'
    }
    
    response = client.post('/zomeravond', data=data)
    assert response.status_code == 302
    assert '/zomeravond/success' in response.headers.get('Location', '')
    
    # In full testing, append_row is called unless TESTING_NO_APPEND is set.
    # But since it's mocked, we can check it.
    assert mock_get_sheet.return_value.append_row.called