ANTOOZA-BACKEND/Application/Features/Api/MyPage/DeleteBanner/Handler.cs

using Application.Abstractions.Data;
using Application.Abstractions.Messaging;
using Microsoft.EntityFrameworkCore;
using SharedKernel.Results;
using SharedKernel.Storage;

namespace Application.Features.Api.MyPage.DeleteBanner;

internal sealed class Handler(IAppDbContext db, IFileStorage fileStorage) : ICommandHandler<Command, Result>
{
    public async Task<Result> Handle(Command request, CancellationToken ct)
    {
        var member = await db.Member.FirstOrDefaultAsync(m => m.ID == request.MemberID, ct);
        if (member is null)
        {
            return Result.Failure(Error.NotFound("MyPage.MemberNotFound", "회원 정보를 찾을 수 없습니다."));
        }

        if (!string.IsNullOrEmpty(member.BannerUrl))
        {
            fileStorage.DeleteByUrl(member.BannerUrl);
        }

        member.SetBannerUrl(null);
        await db.SaveChangesAsync(ct);

        return Result.Success();
    }
}