using MediatR;
using Microsoft.EntityFrameworkCore;
using MinAttest.Contracts.Attests;
using MinAttest.Contracts.Persons;
using MinAttest.Application.Abstractions;

namespace MinAttest.Application.Features.Persons.Queries;

public record GetPersonQuery(Guid Id) : IRequest<PersonResponse?>;

public class GetPersonQueryHandler(IAppDbContext db) : IRequestHandler<GetPersonQuery, PersonResponse?>
{
    public async Task<PersonResponse?> Handle(GetPersonQuery request, CancellationToken cancellationToken)
    {
        var person = await db.Persons
            .Where(p => p.Id == request.Id)
            .Select(p => new PersonResponse(
                p.Id,
                p.NationalIdHash,
                p.Email,
                p.Phone,
                p.Attests
                    .Select(a => new AttestSummary(
                        a.Id,
                        a.Employer != null ? a.Employer.Name : string.Empty,
                        a.Title,
                        a.From,
                        a.To,
                        a.Status == Domain.Entities.AttestStatus.Issued
                    ))
                    .ToList()
            ))
            .FirstOrDefaultAsync(cancellationToken);

        return person;
    }
}