using Application.Abstractions.Data;
using Application.Abstractions.Messaging;
using Microsoft.EntityFrameworkCore;

namespace Application.Features.Api.Channel.GetByIds;

public sealed class Handler(IAppDbContext db) : IQueryHandler<Query, Response>
{
    public async Task<Response> Handle(Query request, CancellationToken ct)
    {
        if (request.IDs.Count == 0)
        {
            return new Response([]);
        }

        var list = await db.Channel.AsNoTracking()
            .Where(c => c.IsActive && c.MemberID != request.MemberID && request.IDs.Contains(c.ID))
            .Select(c => new Response.Row(
                c.ID,
                c.SID,
                c.Name,
                c.Handle,
                c.ThumbnailUrl,
                c.SubscriberCount,
                c.IsVerified,
                c.DonationCode
            ))
            .ToListAsync(ct);

        return new Response(list);
    }
}