<?php

namespace App\Http\Controllers;

use App\Models\Article;
use App\Models\Category;
use App\Models\Product;
use App\Models\Tag;

class SitemapController extends Controller
{
    public function index()
    {
        $baseUrl = rtrim(config('app.url'), '/');

        $urls = [
            '/',
            '/categories',
            '/tags',
            '/articles',
            '/about',
            '/contact',
        ];

        $categories = Category::all()->map(fn ($c) => "/category/{$c->slug}")->all();
        $tags = Tag::all()->map(fn ($t) => "/tag/{$t->slug}")->all();
        $products = Product::published()->get()->map(fn ($p) => "/product/{$p->slug}")->all();
        $articles = Article::published()->get()->map(fn ($a) => "/article/{$a->slug}")->all();

        $allUrls = array_merge($urls, $categories, $tags, $products, $articles);

        $xml = new \XMLWriter();
        $xml->openMemory();
        $xml->startDocument('1.0', 'UTF-8');
        $xml->startElement('urlset');
        $xml->writeAttribute('xmlns', 'http://www.sitemaps.org/schemas/sitemap/0.9');

        foreach ($allUrls as $path) {
            $xml->startElement('url');
            $xml->writeElement('loc', $baseUrl . $path);
            $xml->endElement();
        }

        $xml->endElement();
        $xml->endDocument();

        return response($xml->outputMemory(), 200)
            ->header('Content-Type', 'application/xml');
    }
}