ANTOOZA-BACKEND/Web.Api/Endpoints/Auth/SocialLogin.cs

using SharedKernel.Extensions;
using Application.Abstractions.Messaging;
using Web.Api.Extensions;
using Web.Api.Common;

namespace Web.Api.Endpoints.Auth;

/// <summary>
/// 소셜 로그인 (Naver/Kakao) — 프론트 콜백 라우트가 code/state 를 받아 호출 (d5 §④).
/// 이메일 미제공(카카오 선택동의)은 Auth.EmailRequired, 미연동 기존 계정은 Auth.AccountExists 로 실패.
/// </summary>
internal sealed class SocialLogin : IEndpoint
{
    public sealed record Request(
        string Provider,
        string Code,
        string? State,
        string? RedirectUri
    );

    public void MapEndpoint(IEndpointRouteBuilder app)
    {
        app.MapPost("api/auth/social-login", async (
            Request request,
            HttpContext httpContext,
            ISender sender,
            CancellationToken ct
        ) => {

            var ipAddress = httpContext.GetClientIP();
            var userAgent = httpContext.GetUserAgent();

            var command = new Application.Features.Api.Auth.SocialLogin.Command(
                request.Provider,
                request.Code,
                request.State,
                request.RedirectUri,
                ipAddress,
                userAgent
            );

            var result = await sender.Send(command, ct);

            return result.Match(
                data => ApiResponse.Ok(data),
                CustomResults.Problem
            );
        })
        .WithTags("Auth")
        .AllowAnonymous();
    }
}