using System;
using System.Threading;
using System.Threading.Tasks;
using AsbCloudApp.Data;
using AsbCloudApp.Exceptions;
using AsbCloudApp.Repositories;
using AsbCloudApp.Services;

namespace AsbCloudInfrastructure.Services;

public class NotificationService : INotificationService
{
	private readonly INotificationSendingQueueService notificationSendingQueueService;
	private readonly INotificationRepository notificationRepository;

	public NotificationService(INotificationSendingQueueService notificationSendingQueueService, 
		INotificationRepository notificationRepository)
	{
		this.notificationSendingQueueService = notificationSendingQueueService;
		this.notificationRepository = notificationRepository;
	}
	
	public async Task SendNotificationAsync(int idUser, 
		int idNotificationTransport, 
		int idNotificationCategory, 
		string title,
		string subject, 
		TimeSpan timeToLife, 
		CancellationToken cancellationToken)
	{
		NotificationDto notification = new()
		{
			IdUser = idUser,
			IdNotificationTransport = idNotificationTransport,
			IdNotificationCategory = idNotificationCategory,
			Title = title,
			Subject = subject,
			TimeToLife = timeToLife
		};
		
		await notificationRepository.InsertAsync(notification,
			cancellationToken);
		
		notificationSendingQueueService.Enqueue(notification);
	}

	public async Task UpdateNotificationAsync(int idNotification,
		bool isRead, 
		CancellationToken cancellationToken)
	{
		var notification = await notificationRepository.GetOrDefaultAsync(idNotification,
			cancellationToken) ?? throw new ArgumentInvalidException("Уведомление не найдено", 
			nameof(idNotification));

		notification.IsRead = isRead;
		
		await notificationRepository.UpdateAsync(notification, 
			cancellationToken);
	}

	public async Task ResendNotificationAsync(int idUser, 
		int idNotificationTransport, 
		CancellationToken cancellationToken)
	{
		var notifications = await notificationRepository.GetUnsentNotificationsAsync(idUser,
			idNotificationTransport,
			cancellationToken);
		
		notificationSendingQueueService.EnqueueRange(notifications);
	}
}