using Microsoft.AspNetCore.Mvc;
using System.Text;
using System.Xml.Linq;
using BCards.Web.Services;

namespace BCards.Web.Controllers;

public class SitemapController : Controller
{
    private readonly IUserPageService _userPageService;
    private readonly ILivePageService _livePageService;
    private readonly ILogger<SitemapController> _logger;

    public SitemapController(
        IUserPageService userPageService, 
        ILivePageService livePageService,
        ILogger<SitemapController> logger)
    {
        _userPageService = userPageService;
        _livePageService = livePageService;
        _logger = logger;
    }

    [Route("sitemap.xml")]
    [ResponseCache(Duration = 86400)] // Cache for 24 hours
    public async Task<IActionResult> Index()
    {
        try
        {
            // 🔥 NOVA FUNCIONALIDADE: Usar LivePages em vez de UserPages
            var livePages = await _livePageService.GetAllActiveAsync();
            
            // Define namespace corretamente para evitar conflitos
            XNamespace ns = "http://www.sitemaps.org/schemas/sitemap/0.9";
            
            // Construir URLs das páginas dinâmicas separadamente para evitar problemas
            var dynamicUrls = livePages.Select(page => 
                new XElement(ns + "url",
                    new XElement(ns + "loc", $"{Request.Scheme}://{Request.Host}/page/{page.Category?.Replace(" ", "-")?.ToLower()}/{page.Slug}"),
                    new XElement(ns + "lastmod", page.LastSyncAt.ToString("yyyy-MM-dd")),
                    new XElement(ns + "changefreq", "weekly"),
                    new XElement(ns + "priority", "0.8")
                )
            ).ToList();
            
            var sitemap = new XDocument(
                new XDeclaration("1.0", "utf-8", "yes"),
                new XElement(ns + "urlset",
                    // Add static pages
                    new XElement(ns + "url",
                        new XElement(ns + "loc", $"{Request.Scheme}://{Request.Host}/"),
                        new XElement(ns + "lastmod", DateTime.UtcNow.ToString("yyyy-MM-dd")),
                        new XElement(ns + "changefreq", "daily"),
                        new XElement(ns + "priority", "1.0")
                    ),
                    new XElement(ns + "url",
                        new XElement(ns + "loc", $"{Request.Scheme}://{Request.Host}/Home/Pricing"),
                        new XElement(ns + "lastmod", DateTime.UtcNow.ToString("yyyy-MM-dd")),
                        new XElement(ns + "changefreq", "weekly"),
                        new XElement(ns + "priority", "0.9")
                    ),
                    
                    // Add live pages (SEO-optimized URLs only)
                    dynamicUrls
                )
            );
            
            _logger.LogInformation($"Generated sitemap with {livePages.Count} live pages");
            
            return Content(sitemap.ToString(SaveOptions.DisableFormatting), "application/xml", Encoding.UTF8);
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Error generating sitemap");
            return StatusCode(500, "Error generating sitemap");
        }
    }

    [Route("robots.txt")]
    [ResponseCache(Duration = 86400)] // Cache for 24 hours
    public IActionResult RobotsTxt()
    {
        var robotsTxt = $@"User-agent: *
Allow: /
Allow: /page/

Disallow: /Admin/
Disallow: /Auth/
Disallow: /Payment/
Disallow: /api/

Sitemap: {Request.Scheme}://{Request.Host}/sitemap.xml";

        return Content(robotsTxt, "text/plain", Encoding.UTF8);
    }
}