import importlib

import pytest

server_app_module = importlib.import_module("server.app")
app = server_app_module.app


@pytest.fixture
def client():
    with app.test_client() as client:
        yield client


def login(client):
    return client.post('/auth/login', data={'username': 'admin', 'password': 'admin'})


def test_email_template_list_requires_auth(client):
    resp = client.get('/admin/api/email-templates')
    assert resp.status_code == 302
    assert resp.headers['Location'] == '/auth/login'


def test_list_email_templates_returns_metadata(client):
    login(client)
    resp = client.get('/admin/api/email-templates')
    assert resp.status_code == 200

    payload = resp.get_json()
    assert payload['status'] == 'ok'
    assert isinstance(payload['templates'], list)
    assert payload['templates'][0]['id'] == 'newsletter_confirmation'


def test_get_email_template_returns_content(client):
    login(client)
    resp = client.get('/admin/api/email-templates/newsletter_confirmation')
    assert resp.status_code == 200

    payload = resp.get_json()
    assert payload['status'] == 'ok'
    template = payload['template']
    assert template['id'] == 'newsletter_confirmation'
    assert 'content' in template


def test_update_email_template_persists_content(client):
    login(client)
    new_content = '<p>Updated template {{email}}</p>'

    resp = client.put(
        '/admin/api/email-templates/newsletter_confirmation',
        json={'content': new_content},
    )
    assert resp.status_code == 200
    payload = resp.get_json()
    assert payload['status'] == 'ok'
    assert payload['template']['content'] == new_content

    # Fetch again to ensure persistence
    resp_get = client.get('/admin/api/email-templates/newsletter_confirmation')
    assert resp_get.status_code == 200
    template = resp_get.get_json()['template']
    assert template['content'] == new_content


def test_update_email_template_requires_content(client):
    login(client)
    resp = client.put(
        '/admin/api/email-templates/newsletter_confirmation',
        json={'content': '   '},
    )
    assert resp.status_code == 400
    payload = resp.get_json()
    assert payload['status'] == 'error'