namespace TaxBaik.Web.Services;

/// <summary>
/// Notification service for real-time admin updates
/// SOLID: Single Responsibility - Event notification only
/// Uses Blazor Server's built-in SignalR for real-time communication
/// </summary>
public interface INotificationService
{
    event Func<int, string, Task>? OnInquiryStatusChanged;
    event Func<int, string, Task>? OnInquiryCreated;
    event Func<int, string, Task>? OnClientCreated;
    event Func<int, string, Task>? OnAnnouncementPublished;
    event Func<int, string, Task>? OnFilingCompleted;

    Task TriggerInquiryStatusChanged(int inquiryId, string status);
    Task TriggerInquiryCreated(int inquiryId, string name);
    Task TriggerClientCreated(int clientId, string name);
    Task TriggerAnnouncementPublished(int announcementId, string title);
    Task TriggerFilingCompleted(int filingId, string filingType);
}

public class NotificationService : INotificationService
{
    private readonly ILogger<NotificationService> _logger;

    public NotificationService(ILogger<NotificationService> logger)
    {
        _logger = logger;
    }

    public event Func<int, string, Task>? OnInquiryStatusChanged;
    public event Func<int, string, Task>? OnInquiryCreated;
    public event Func<int, string, Task>? OnClientCreated;
    public event Func<int, string, Task>? OnAnnouncementPublished;
    public event Func<int, string, Task>? OnFilingCompleted;

    public async Task TriggerInquiryStatusChanged(int inquiryId, string status)
    {
        _logger.LogInformation($"Inquiry {inquiryId} status changed to {status}");
        if (OnInquiryStatusChanged != null)
            await OnInquiryStatusChanged(inquiryId, status);
    }

    public async Task TriggerInquiryCreated(int inquiryId, string name)
    {
        _logger.LogInformation($"New inquiry {inquiryId} from {name}");
        if (OnInquiryCreated != null)
            await OnInquiryCreated(inquiryId, name);
    }

    public async Task TriggerClientCreated(int clientId, string name)
    {
        _logger.LogInformation($"New client {clientId}: {name}");
        if (OnClientCreated != null)
            await OnClientCreated(clientId, name);
    }

    public async Task TriggerAnnouncementPublished(int announcementId, string title)
    {
        _logger.LogInformation($"Announcement {announcementId} published: {title}");
        if (OnAnnouncementPublished != null)
            await OnAnnouncementPublished(announcementId, title);
    }

    public async Task TriggerFilingCompleted(int filingId, string filingType)
    {
        _logger.LogInformation($"Filing {filingId} ({filingType}) completed");
        if (OnFilingCompleted != null)
            await OnFilingCompleted(filingId, filingType);
    }
}