using Hutopy.Modules.Messaging.Data;

namespace Hutopy.Modules.Messaging.Handlers;

public sealed class GetMessageCountRequest
{
    public Guid SubjectId { get; set; }
    [BindFrom("page_size")] public int PageSize { get; set; } = 1000;
}

public record struct GetMessageCountResponse
{
    public required int Count { get; init; }
}

public class GetMessageCount(
    MessagingDbContext context)
    : Endpoint<GetMessageCountRequest, GetMessageCountResponse>
{
    public override void Configure()
    {
        Get("/api/messages/{SubjectId:guid}/count");
        Options(o => o.WithTags("Messages"));
        AllowAnonymous();
    }

    public override async Task HandleAsync(
        GetMessageCountRequest req,
        CancellationToken ct)
    {
        var messageCount = await context.GetMessageCountAsync(
            req.SubjectId,
            null,
            req.PageSize,
            ct);
        
        await SendAsync(
            new()
            {
                Count = messageCount
            },
            cancellation: ct);
    }
}