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();
            
            var sitemap = new XDocument(
                new XDeclaration("1.0", "utf-8", "yes"),
                new XElement("urlset",
                    new XAttribute("xmlns", "http://www.sitemaps.org/schemas/sitemap/0.9"),
                    
                    // Add static pages
                    new XElement("url",
                        new XElement("loc", $"{Request.Scheme}://{Request.Host}/"),
                        new XElement("lastmod", DateTime.UtcNow.ToString("yyyy-MM-dd")),
                        new XElement("changefreq", "daily"),
                        new XElement("priority", "1.0")
                    ),
                    new XElement("url",
                        new XElement("loc", $"{Request.Scheme}://{Request.Host}/Home/Pricing"),
                        new XElement("lastmod", DateTime.UtcNow.ToString("yyyy-MM-dd")),
                        new XElement("changefreq", "weekly"),
                        new XElement("priority", "0.9")
                    ),
                    
                    // Add live pages (SEO-optimized URLs only)
                    livePages.Select(page => 
                        new XElement("url",
                            new XElement("loc", $"{Request.Scheme}://{Request.Host}/page/{page.Category}/{page.Slug}"),
                            new XElement("lastmod", page.LastSyncAt.ToString("yyyy-MM-dd")),
                            new XElement("changefreq", "weekly"),
                            new XElement("priority", "0.8")
                        )
                    )
                )
            );
            
            _logger.LogInformation($"Generated sitemap with {livePages.Count} live pages");
            
            return Content(sitemap.ToString(), "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);
    }
}