ANTOOZA-BACKEND/Web.Api/Endpoints/Channel/LiveLeaderboard.cs

using System.Security.Claims;
using Application.Abstractions.Messaging;
using Web.Api.Common;
using Web.Api.Extensions;

namespace Web.Api.Endpoints.Channel;

/// <summary>현재 방송 세션의 라이브 XP 리더보드</summary>
internal sealed class LiveLeaderboard : IEndpoint
{
    public void MapEndpoint(IEndpointRouteBuilder app)
    {
        /// identifier: @handle 또는 YouTube Channel ID (SID)
        app.MapGet("api/channel/{identifier}/live-leaderboard", async (
            string identifier,
            int? maxRank,
            ClaimsPrincipal user,
            ISender sender,
            CancellationToken ct
        ) => {
            int? viewerID = null;
            if (user.Identity?.IsAuthenticated == true)
            {
                viewerID = user.GetMemberID();
            }

            var query = new Application.Features.Api.Channel.GetLiveLeaderboard.Query(identifier, maxRank, viewerID);
            var data = await sender.Send(query, ct);

            return ApiResponse.Ok(data);
        })
        .WithTags("Channel")
        .AllowAnonymous()
        .RequireFeature(c => c.Channel);
    }
}