#if NET
using DigitalData.MessagingService.Application.Common.Options;
using DigitalData.MessagingService.Abstraction;
using MediatR;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;

namespace DigitalData.MessagingService.Application.EmailAccount.Queries;

public record GetSenderQuery : IRequest<EmailAccountDto?>
{
    public int? Id { get; init; }

    public string? Username { get; init; }
}

/// <summary>
/// 
/// </summary>
/// <param name="Options"></param>
/// <param name="Logger"></param>
public class GetSenderQueryHandler(IOptions<EmailAccountsOptions> Options, ILogger<GetSenderQueryHandler> Logger) : IRequestHandler<GetSenderQuery, EmailAccountDto?>
{
    public Task<EmailAccountDto?> Handle(GetSenderQuery request, CancellationToken cancellationToken)
    {
        var accounts = request.Id is not null
            ? Options.Value.Accounts.Where(a => a.Id == request.Id)
            : Options.Value.Accounts.Where(a => a.Username == request.Username);

        if(accounts.Count() > 1)
        {
            Logger.LogWarning(
                "Multiple email accounts found for the given criteria ({Criteria}). Returning the first one.",
                request.Id is not null ? $"Id: {request.Id}" : $"Username: {request.Username}"
            );
        }

        return Task.FromResult(accounts.FirstOrDefault());
    }
}
#endif