"""Contract tests for landing page routes"""
import pytest
import os
import yaml


@pytest.fixture
def test_products(app):
    """Create test products with various configurations"""
    with app.app_context():
        products_dir = os.path.join(app.config['DATA_DIR'], 'products')

        # Product 1: Active with description
        product1_dir = os.path.join(products_dir, 'product-001')
        os.makedirs(product1_dir, exist_ok=True)
        with open(os.path.join(product1_dir, 'config.yaml'), 'w') as f:
            yaml.dump({
                'product_id': 'product-001',
                'name': 'Zebra Product',
                'submission_url_slug': 'zebra-product',
                'owner_language': 'en',
                'assigned_owner_ids': [],
                'status': 'active',
                'description': 'A product for testing'
            }, f)

        # Product 2: Active without description
        product2_dir = os.path.join(products_dir, 'product-002')
        os.makedirs(product2_dir, exist_ok=True)
        with open(os.path.join(product2_dir, 'config.yaml'), 'w') as f:
            yaml.dump({
                'product_id': 'product-002',
                'name': 'Apple Product',
                'submission_url_slug': 'apple-product',
                'owner_language': 'en',
                'assigned_owner_ids': [],
                'status': 'active'
            }, f)

        # Product 3: Archived (should not appear)
        product3_dir = os.path.join(products_dir, 'product-003')
        os.makedirs(product3_dir, exist_ok=True)
        with open(os.path.join(product3_dir, 'config.yaml'), 'w') as f:
            yaml.dump({
                'product_id': 'product-003',
                'name': 'Archived Product',
                'submission_url_slug': 'archived-product',
                'owner_language': 'en',
                'assigned_owner_ids': [],
                'status': 'archived',
                'description': 'This product is archived'
            }, f)

        # Product 4: Active but missing slug (should not appear)
        product4_dir = os.path.join(products_dir, 'product-004')
        os.makedirs(product4_dir, exist_ok=True)
        with open(os.path.join(product4_dir, 'config.yaml'), 'w') as f:
            yaml.dump({
                'product_id': 'product-004',
                'name': 'No Slug Product',
                'submission_url_slug': '',
                'owner_language': 'en',
                'assigned_owner_ids': [],
                'status': 'active',
                'description': 'Product with missing slug'
            }, f)

        # Product 5: XSS test product
        product5_dir = os.path.join(products_dir, 'product-005')
        os.makedirs(product5_dir, exist_ok=True)
        with open(os.path.join(product5_dir, 'config.yaml'), 'w') as f:
            yaml.dump({
                'product_id': 'product-005',
                'name': '<script>alert("xss")</script>Evil Product',
                'submission_url_slug': 'xss-product',
                'owner_language': 'en',
                'assigned_owner_ids': [],
                'status': 'active',
                'description': '<img src=x onerror=alert("xss")>Malicious description'
            }, f)

        yield


@pytest.mark.contract
def test_get_landing_page_with_products(client, test_products):
    """T002: GET / with active products returns 200 with product list HTML"""
    response = client.get('/')

    assert response.status_code == 200
    assert b'<html' in response.data.lower()
    # Should show Apple Product (first alphabetically)
    assert b'Apple Product' in response.data
    # Should show Zebra Product
    assert b'Zebra Product' in response.data
    # Should NOT show archived product
    assert b'Archived Product' not in response.data


@pytest.mark.contract
def test_get_landing_page_no_products(client, app):
    """T003: GET / with no active products returns 200 with empty state message"""
    # No test products created - products directory is empty
    response = client.get('/')

    assert response.status_code == 200
    assert b'No products are currently accepting feedback' in response.data


@pytest.mark.contract
def test_get_landing_page_filters_archived(client, test_products):
    """T004: GET / excludes archived products"""
    response = client.get('/')

    assert response.status_code == 200
    # Active products should be visible
    assert b'Apple Product' in response.data
    assert b'Zebra Product' in response.data
    # Archived product should NOT be visible
    assert b'Archived Product' not in response.data
    assert b'archived-product' not in response.data


@pytest.mark.contract
def test_get_landing_page_sorting(client, test_products):
    """T005: GET / sorts products alphabetically (name, then product_id)"""
    response = client.get('/')

    assert response.status_code == 200
    html = response.data.decode('utf-8')

    # Apple Product should appear before Zebra Product (alphabetically)
    apple_pos = html.find('Apple Product')
    zebra_pos = html.find('Zebra Product')

    assert apple_pos != -1, "Apple Product not found in response"
    assert zebra_pos != -1, "Zebra Product not found in response"
    assert apple_pos < zebra_pos, "Products not sorted alphabetically"


@pytest.mark.contract
def test_get_landing_page_xss_prevention(client, test_products):
    """T006: GET / escapes HTML in product names (XSS prevention)"""
    response = client.get('/')

    assert response.status_code == 200
    html = response.data.decode('utf-8')

    # Script tags should be escaped, not executed
    assert '<script>' not in html, "Script tag not escaped in product name"
    assert 'alert("xss")' not in html or '&lt;script&gt;' in html, "XSS vulnerability in product name"

    # Image onerror should be escaped
    assert '<img src=x onerror=' not in html, "XSS vulnerability in product description"


@pytest.mark.contract
def test_get_landing_page_missing_slug(client, test_products):
    """T007: GET / excludes products with missing submission_url_slug"""
    response = client.get('/')

    assert response.status_code == 200
    # Product with missing slug should NOT appear
    assert b'No Slug Product' not in response.data
    # But other active products should appear
    assert b'Apple Product' in response.data


@pytest.mark.contract
def test_landing_page_with_authenticated_user_renders_correctly(client, test_products, app):
    """Test that landing page renders correctly - verifies url_for('landing.index') works

    This test verifies that the base.html template references url_for('landing.index')
    instead of url_for('index'), which would cause a BuildError.
    """
    # Just access the landing page - if url_for references are broken, this will fail
    response = client.get('/')

    assert response.status_code == 200
    # Should contain products (proving the page rendered successfully)
    assert b'Apple Product' in response.data
    assert b'Zebra Product' in response.data