"""
Django Sitemaps for SEO

Generates XML sitemaps for search engine crawlers to discover and index content.
"""

from django.contrib.sitemaps import Sitemap
from django.urls import reverse

from apps.entities.models import Park, Ride, Company, RideModel


class ParkSitemap(Sitemap):
    """Sitemap for theme parks."""
    
    changefreq = "weekly"
    priority = 0.9
    
    def items(self):
        """Return all active parks."""
        return Park.objects.filter(is_active=True).order_by('-updated')
    
    def lastmod(self, obj):
        """Return last modification date."""
        return obj.updated
    
    def location(self, obj):
        """Return URL for park."""
        return f'/parks/{obj.slug}/'


class RideSitemap(Sitemap):
    """Sitemap for rides."""
    
    changefreq = "weekly"
    priority = 0.8
    
    def items(self):
        """Return all active rides."""
        return Ride.objects.filter(
            is_active=True
        ).select_related('park').order_by('-updated')
    
    def lastmod(self, obj):
        """Return last modification date."""
        return obj.updated
    
    def location(self, obj):
        """Return URL for ride."""
        return f'/parks/{obj.park.slug}/rides/{obj.slug}/'


class CompanySitemap(Sitemap):
    """Sitemap for companies/manufacturers."""
    
    changefreq = "monthly"
    priority = 0.6
    
    def items(self):
        """Return all active companies."""
        return Company.objects.filter(is_active=True).order_by('-updated')
    
    def lastmod(self, obj):
        """Return last modification date."""
        return obj.updated
    
    def location(self, obj):
        """Return URL for company."""
        return f'/manufacturers/{obj.slug}/'


class RideModelSitemap(Sitemap):
    """Sitemap for ride models."""
    
    changefreq = "monthly"
    priority = 0.7
    
    def items(self):
        """Return all active ride models."""
        return RideModel.objects.filter(
            is_active=True
        ).select_related('manufacturer').order_by('-updated')
    
    def lastmod(self, obj):
        """Return last modification date."""
        return obj.updated
    
    def location(self, obj):
        """Return URL for ride model."""
        return f'/models/{obj.slug}/'


class StaticSitemap(Sitemap):
    """Sitemap for static pages."""
    
    changefreq = "monthly"
    priority = 0.5
    
    def items(self):
        """Return list of static pages."""
        return ['home', 'about', 'privacy', 'terms']
    
    def location(self, item):
        """Return URL for static page."""
        if item == 'home':
            return '/'
        return f'/{item}/'
    
    def changefreq(self, item):
        """Home page changes more frequently."""
        if item == 'home':
            return 'daily'
        return 'monthly'
    
    def priority(self, item):
        """Home page has higher priority."""
        if item == 'home':
            return 1.0
        return 0.5