using BCards.Web.Models;
using BCards.Web.Repositories;
using BCards.Web.ViewModels;

namespace BCards.Web.Services;

public class LivePageService : ILivePageService
{
    private readonly ILivePageRepository _livePageRepository;
    private readonly IUserPageRepository _userPageRepository;
    private readonly ILogger<LivePageService> _logger;

    public LivePageService(
        ILivePageRepository livePageRepository,
        IUserPageRepository userPageRepository,
        ILogger<LivePageService> logger)
    {
        _livePageRepository = livePageRepository;
        _userPageRepository = userPageRepository;
        _logger = logger;
    }

    public async Task<LivePage?> GetByCategoryAndSlugAsync(string category, string slug)
    {
        return await _livePageRepository.GetByCategoryAndSlugAsync(category, slug);
    }

    public async Task<List<LivePage>> GetAllActiveAsync()
    {
        return await _livePageRepository.GetAllActiveAsync();
    }

    public async Task<LivePage?> GetLivePageFromUserPageId(string userPageId)
    {
        return await _livePageRepository.GetByOriginalPageIdAsync(userPageId);
    }

    public async Task<LivePage> SyncFromUserPageAsync(string userPageId)
    {
        var userPage = await _userPageRepository.GetByIdAsync(userPageId);
        if (userPage == null)
            throw new InvalidOperationException($"UserPage {userPageId} not found");

        if (userPage.Status != PageStatus.Active)
            throw new InvalidOperationException("UserPage must be Active to sync to LivePage");

        // Verificar se já existe LivePage para este UserPage
        var existingLivePage = await _livePageRepository.GetByOriginalPageIdAsync(userPageId);

        var livePage = new LivePage
        {
            OriginalPageId = userPageId,
            UserId = userPage.UserId,
            Category = userPage.Category,
            Slug = userPage.Slug,
            DisplayName = userPage.DisplayName,
            Bio = userPage.Bio,
            ProfileImage = userPage.ProfileImage,
            BusinessType = userPage.BusinessType,
            Theme = userPage.Theme,
            Links = userPage.Links,
            SeoSettings = userPage.SeoSettings,
            Language = userPage.Language,
            Analytics = new LivePageAnalytics
            {
                TotalViews = existingLivePage?.Analytics?.TotalViews ?? 0,
                TotalClicks = existingLivePage?.Analytics?.TotalClicks ?? 0,
                LastViewedAt = existingLivePage?.Analytics?.LastViewedAt
            },
            PublishedAt = userPage.ApprovedAt ?? DateTime.UtcNow
        };

        if (existingLivePage != null)
        {
            // Atualizar existente
            livePage.Id = existingLivePage.Id;
            livePage.CreatedAt = existingLivePage.CreatedAt;
            _logger.LogInformation("Updating existing LivePage {LivePageId} from UserPage {UserPageId}", livePage.Id, userPageId);
            return await _livePageRepository.UpdateAsync(livePage);
        }
        else
        {
            // Criar nova
            _logger.LogInformation("Creating new LivePage from UserPage {UserPageId}", userPageId);
            return await _livePageRepository.CreateAsync(livePage);
        }
    }

    public async Task<bool> DeleteByOriginalPageIdAsync(string originalPageId)
    {
        _logger.LogInformation("Deleting LivePage for UserPage {UserPageId}", originalPageId);
        return await _livePageRepository.DeleteByOriginalPageIdAsync(originalPageId);
    }

    public async Task IncrementViewAsync(string livePageId)
    {
        try
        {
            await _livePageRepository.IncrementViewAsync(livePageId);
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Failed to increment view for LivePage {LivePageId}", livePageId);
        }
    }

    public async Task IncrementLinkClickAsync(string livePageId, int linkIndex)
    {
        try
        {
            await _livePageRepository.IncrementLinkClickAsync(livePageId, linkIndex);
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Failed to increment click for LivePage {LivePageId} link {LinkIndex}", livePageId, linkIndex);
        }
    }
}