PnvPanel/backend/src/PnvPanel.Application/Telegram/CreateLinkTokenCommandHandler.cs

using PnvPanel.Application.Auth;
using PnvPanel.Application.Common.Interfaces;
using PnvPanel.Application.Common.Messaging;
using PnvPanel.Application.Common.Models;
using PnvPanel.Domain.Telegram;

namespace PnvPanel.Application.Telegram;

public sealed class CreateLinkTokenCommandHandler(IAppDbContext dbContext, ICurrentUser currentUser)
    : ICommandHandler<CreateLinkTokenCommand, Result<LinkTokenDto>>
{
    private static readonly TimeSpan Ttl = TimeSpan.FromMinutes(5);

    public Task<Result<LinkTokenDto>> Handle(CreateLinkTokenCommand command, CancellationToken cancellationToken)
    {
        if (currentUser.UserId is not { } userId)
            return Task.FromResult(Result.Failure<LinkTokenDto>(AuthErrors.Unauthorized));

        var token = TelegramLinkToken.Create(userId, Ttl);
        dbContext.TelegramLinkTokens.Add(token);

        return Task.FromResult(Result.Success(new LinkTokenDto(token.Token, token.ExpiresAt)));
    }
}