import pytest
from pathlib import Path

from app import app, db, Frage


@pytest.fixture
def client(tmp_path):
    db_file = tmp_path / "test.db"
    app.config['TESTING'] = True
    app.config['SQLALCHEMY_DATABASE_URI'] = f'sqlite:///{db_file}'
    app.BASE_DIR = str(tmp_path)

    with app.app_context():
        db.drop_all()
        db.create_all()
        q = Frage(text='Testfrage?')
        db.session.add(q)
        db.session.commit()
        app.config['TEST_QUESTION_ID'] = q.id

    with app.test_client() as test_client:
        yield test_client


def _base_form(question_id):
    return {
        'vorname': 'Max',
        'nachname': 'Mustermann',
        'strasse': 'Musterstraße',
        'hausnummer': '1',
        'plz': '12345',
        'ort': 'Musterstadt',
        'land': 'Deutschland',
        f'frage_{question_id}': 'Antwort'
    }


def test_invalid_email_shows_error(client):
    qid = app.config.get('TEST_QUESTION_ID')
    data = _base_form(qid)
    data.update({'email': 'not-an-email', 'telefon_vorwahl': '', 'telefon_nummer': ''})

    res = client.post('/', data=data)
    assert res.status_code == 200
    assert 'Ungültige E-Mail-Adresse' in res.get_data(as_text=True)


def test_invalid_phone_shows_error(client):
    qid = app.config.get('TEST_QUESTION_ID')
    data = _base_form(qid)
    # invalid numeric content
    data.update({'email': 'max@example.com', 'telefon_vorwahl': '49', 'telefon_nummer': 'notnum'})

    res = client.post('/', data=data)
    assert res.status_code == 200
    assert 'Ungültige Telefonnummer' in res.get_data(as_text=True)


def test_missing_phone_part_shows_error(client):
    qid = app.config.get('TEST_QUESTION_ID')
    data = _base_form(qid)
    data.update({'email': 'max@example.com', 'telefon_vorwahl': '49', 'telefon_nummer': ''})

    res = client.post('/', data=data)
    assert res.status_code == 200
    assert 'Vorwahl und Telefonnummer müssen beide angegeben werden' in res.get_data(as_text=True)


def test_valid_email_and_phone_redirects(client):
    qid = app.config.get('TEST_QUESTION_ID')
    data = _base_form(qid)
    data.update({'email': 'max@example.com', 'telefon_vorwahl': '49', 'telefon_nummer': '1234567'})

    res = client.post('/', data=data, follow_redirects=False)
    # successful submission should redirect to /danke
    assert res.status_code in (302, 303)