"""Tests for sitemap_export — sitemap.xml and robots.txt generation."""

import pytest
from xml.etree import ElementTree as ET

from app.sitemap_export import (
    SEOMAP_ROUTES,
    build_sitemap_xml,
    build_robots_txt,
)


class TestSitemapRoutes:
    """Verify the route configuration constants."""

    def test_route_count(self):
        assert len(SEOMAP_ROUTES) == 5

    def test_home_route(self):
        assert SEOMAP_ROUTES[0] == {
            "path": "/",
            "changefreq": "daily",
            "priority": 1.0,
        }

    def test_all_paths_present(self):
        paths = [r["path"] for r in SEOMAP_ROUTES]
        expected = ["/", "/about", "/schedule", "/events", "/contact"]
        assert paths == expected

    def test_priority_range(self):
        for route in SEOMAP_ROUTES:
            assert 0.0 <= route["priority"] <= 1.0

    def test_valid_changefreq_values(self):
        valid = {"always", "hourly", "daily", "weekly", "monthly", "yearly", "never"}
        for route in SEOMAP_ROUTES:
            assert route["changefreq"] in valid


class TestBuildSitemapXml:
    """Tests for the sitemap XML builder."""

    def test_returns_string(self):
        result = build_sitemap_xml("https://example.com")
        assert isinstance(result, str)

    def test_contains_xml_declaration(self):
        result = build_sitemap_xml("https://example.com")
        assert '<?xml version="1.0" encoding="UTF-8"?>' in result

    def test_contains_urlset_namespace(self):
        result = build_sitemap_xml("https://example.com")
        assert 'xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"' in result

    def test_contains_all_routes(self):
        result = build_sitemap_xml("https://example.com")
        for route in SEOMAP_ROUTES:
            assert f"<loc>https://example.com{route['path']}</loc>" in result

    def test_strips_trailing_slash_from_base_url(self):
        result = build_sitemap_xml("https://example.com/")
        assert "https://example.com//about" not in result
        assert "<loc>https://example.com/about</loc>" in result

    def test_different_base_url(self):
        result = build_sitemap_xml("https://mystation.org")
        assert "https://mystation.org/schedule" in result
        assert "https://example.com" not in result

    def test_valid_xml(self):
        result = build_sitemap_xml("https://example.com")
        # Should parse without error
        root = ET.fromstring(result)
        # The root tag includes the namespace
        assert "urlset" in root.tag

    def test_contains_changefreq_and_priority(self):
        result = build_sitemap_xml("https://example.com")
        assert "<changefreq>daily</changefreq>" in result
        assert "<priority>1.0</priority>" in result
        assert "<priority>0.5</priority>" in result


class TestBuildRobotsTxt:
    """Tests for the robots.txt builder."""

    def test_returns_string(self):
        result = build_robots_txt("https://example.com")
        assert isinstance(result, str)

    def test_user_agent_allows_all(self):
        result = build_robots_txt("https://example.com")
        assert "User-agent: *" in result
        assert "Allow: /" in result

    def test_disallows_admin_and_login(self):
        result = build_robots_txt("https://example.com")
        assert "Disallow: /admin" in result
        assert "Disallow: /login" in result

    def test_sitemap_reference(self):
        result = build_robots_txt("https://example.com")
        assert "Sitemap: https://example.com/sitemap.xml" in result

    def test_strips_trailing_slash(self):
        result = build_robots_txt("https://example.com/")
        assert "Sitemap: https://example.com//sitemap.xml" not in result
        assert "Sitemap: https://example.com/sitemap.xml" in result

    def test_different_base_url(self):
        result = build_robots_txt("https://mystation.org")
        assert "Sitemap: https://mystation.org/sitemap.xml" in result