"""Verify the no-crawl X-Robots-Tag is exempted for marketing/legal/billing
blueprints (Task B-1.3).

Marketing pages must be indexable by search engines and AI crawlers
(Loi 25 transparency, GEO/SEO strategy). The after_request hook in
src/app.py keeps emitting `X-Robots-Tag: noindex, nofollow, ...` for
private routes (/api/*, /admin, /account, /share, /app, /auth/*,
recordings dashboard).

Pattern: no conftest.py, env vars set at module load time, then import
src.app.app directly. Mirrors tests/test_blueprint_registration.py.
"""

import os
import sys

sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

os.environ.setdefault('SQLALCHEMY_DATABASE_URI', 'sqlite:///:memory:')
os.environ.setdefault('SECRET_KEY', 'test-secret-key-for-no-crawl-headers')

from src.app import app, _is_public_indexable_endpoint  # noqa: E402


def test_marketing_root_has_no_noindex_header():
    """Marketing root '/' must NOT have X-Robots-Tag noindex header."""
    client = app.test_client()
    response = client.get('/')
    # Anonymous user gets the marketing landing (B-1.3 swap of recordings.index).
    robots_tag = response.headers.get('X-Robots-Tag', '')
    assert 'noindex' not in robots_tag.lower(), (
        f"Expected no noindex on /, got X-Robots-Tag: {robots_tag!r}"
    )


def test_robots_txt_route_has_no_noindex_header():
    """The /robots.txt response itself must not be noindexed (it's a directive)."""
    client = app.test_client()
    response = client.get('/robots.txt')
    robots_tag = response.headers.get('X-Robots-Tag', '')
    assert 'noindex' not in robots_tag.lower(), (
        f"Expected no noindex on /robots.txt, got X-Robots-Tag: {robots_tag!r}"
    )


def test_static_assets_have_no_noindex_header():
    """Static assets must not carry X-Robots-Tag noindex."""
    client = app.test_client()
    # We don't need a real static file — the endpoint resolution is what
    # the after_request hook keys off. Use a known-missing path; Flask's
    # static handler still resolves request.endpoint to 'static'.
    response = client.get('/static/this-does-not-exist.css')
    robots_tag = response.headers.get('X-Robots-Tag', '')
    assert 'noindex' not in robots_tag.lower(), (
        f"Expected no noindex on /static/*, got X-Robots-Tag: {robots_tag!r}"
    )


def test_private_route_still_has_noindex():
    """A private app route must STILL have noindex headers."""
    client = app.test_client()
    # /admin requires login; anonymous gets a redirect, but the after_request
    # hook still runs on the redirect response. That redirect response must
    # carry the noindex header (defense-in-depth).
    response = client.get('/admin', follow_redirects=False)
    robots_tag = response.headers.get('X-Robots-Tag', '')
    assert 'noindex' in robots_tag.lower(), (
        f"Expected noindex on /admin, got X-Robots-Tag: {robots_tag!r}"
    )


def test_login_route_still_has_noindex():
    """The /login page is a private utility surface and must keep noindex."""
    client = app.test_client()
    response = client.get('/login', follow_redirects=False)
    robots_tag = response.headers.get('X-Robots-Tag', '')
    assert 'noindex' in robots_tag.lower(), (
        f"Expected noindex on /login, got X-Robots-Tag: {robots_tag!r}"
    )


# --- Direct unit tests on the helper predicate ---


def test_helper_marketing_endpoint_is_indexable():
    assert _is_public_indexable_endpoint('marketing.landing') is True


def test_helper_legal_endpoint_is_indexable():
    assert _is_public_indexable_endpoint('legal.confidentialite') is True


def test_helper_billing_success_is_indexable():
    assert _is_public_indexable_endpoint('billing.success') is True


def test_helper_billing_other_endpoints_not_indexable():
    # Only billing.success is exempt; the rest of the checkout flow stays private.
    assert _is_public_indexable_endpoint('billing.checkout') is False
    assert _is_public_indexable_endpoint('billing.webhook') is False


def test_helper_static_endpoint_is_indexable():
    assert _is_public_indexable_endpoint('static') is True


def test_helper_robots_endpoint_is_indexable():
    assert _is_public_indexable_endpoint('robots_txt') is True


def test_helper_api_endpoint_not_indexable():
    assert _is_public_indexable_endpoint('api.something') is False


def test_helper_recordings_index_not_indexable():
    """The dashboard at '/' (authenticated branch) must keep noindex."""
    assert _is_public_indexable_endpoint('recordings.index') is False


def test_helper_none_endpoint_not_indexable():
    assert _is_public_indexable_endpoint(None) is False
    assert _is_public_indexable_endpoint('') is False