ANTOOZA-BACKEND/Web.Api/Endpoints/Stocks/Watch/IsWatching.cs

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

namespace Web.Api.Endpoints.Stocks.Watch;

/// <summary>관심 여부 맵 — 목록 별표·상세 초기상태용 배치 조회 (인증). codes=CSV(최대 100).</summary>
internal sealed class IsWatching : IEndpoint
{
    public void MapEndpoint(IEndpointRouteBuilder app)
    {
        app.MapGet("api/stocks/watchlist/status", async (
            string? codes,
            ClaimsPrincipal user,
            ISender sender,
            CancellationToken ct
        ) => {
            var memberID = user.GetRequiredMemberID();

            var list = (codes ?? "")
                .Split(',', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries)
                .Take(100)
                .ToArray();

            var data = await sender.Send(new Application.Features.Api.Stocks.Watch.IsWatching.Query(memberID, list), ct);
            return ApiResponse.Ok(data);
        })
        .WithTags("Stocks.Watch")
        .RequireAuthorization();
    }
}