bitforum-backend/Application/Features/Api/Forum/Comment/Update/Handler.cs

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

namespace Application.Features.Api.Forum.Comment.Update;

public sealed class Handler(IAppDbContext db) : ICommandHandler<Command, Result>
{
    public async Task<Result> Handle(Command request, CancellationToken ct)
    {
        if (string.IsNullOrWhiteSpace(request.Content))
        {
            return Result.Failure(Error.Problem("Comment.ContentRequired", "내용을 입력해주세요."));
        }

        var comment = await db.Comment.FirstOrDefaultAsync(x => x.ID == request.ID, ct);
        if (comment is null)
        {
            return Result.Failure(Error.NotFound("Comment.NotFound", "댓글을 찾을 수 없습니다."));
        }

        if (comment.MemberID != request.MemberID)
        {
            return Result.Failure(Error.Forbidden("Comment.Forbidden", "수정 권한이 없습니다."));
        }

        comment.Content = request.Content.Trim();
        comment.IsSecret = request.IsSecret;
        comment.UpdatedAt = DateTime.UtcNow;

        await db.SaveChangesAsync(ct);

        return Result.Success();
    }
}