using MediatR;
using Microsoft.EntityFrameworkCore;
using MinAttest.Application.Abstractions;
using MinAttest.Contracts.Attests;
using MinAttest.Domain.Entities;

namespace MinAttest.Application.Features.Attests.Queries;

public record ListPersonAttestsQuery(Guid PersonId, int? Take) : IRequest<IReadOnlyList<AttestSummary>>;

public class ListPersonAttestsQueryHandler(IAppDbContext db) : IRequestHandler<ListPersonAttestsQuery, IReadOnlyList<AttestSummary>>
{
    public async Task<IReadOnlyList<AttestSummary>> Handle(ListPersonAttestsQuery request, CancellationToken cancellationToken)
    {
        return await db.Attests.AsNoTracking().Include(a => a.Employer)
            .Where(a => a.PersonId == request.PersonId)
            .OrderByDescending(a => a.IssuedAt)
            .Take(Math.Clamp(request.Take ?? 50, 1, 200))
            .Select(a => new AttestSummary(a.Id, (a.Employer != null ? a.Employer.Name : string.Empty), a.Title, a.From, a.To, a.Status == AttestStatus.Issued))
            .ToListAsync(cancellationToken);
    }
}