ANTOOZA-BACKEND/Application/Features/Admin/Document/Create/Handler.cs

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

namespace Application.Features.Admin.Document.Create;

public sealed class Handler(IAppDbContext db, IEditorImageService editorImage, ICacheService cache) : ICommandHandler<Command, Result>
{
    public async Task<Result> Handle(Command request, CancellationToken ct)
    {
        if (await db.Document.AnyAsync(c => c.Code == request.Code))
        {
            return Result.Failure(Error.Conflict("Document.DuplicateCode", "이미 등록된 문서입니다."));
        }

        var document = Domain.Entities.Page.Document.Create(
            request.Code,
            request.Subject,
            null,
            request.IsActive
        );

        await db.Document.AddAsync(document, ct);

        int affectedRows = await db.SaveChangesAsync();
        if (affectedRows <= 0)
        {
            return Result.Failure(Error.Problem("Document.CreateFailed", "문서 등록 중 오류가 발생했습니다."));
        }

        var path = new FileStoragePath(UploadTarget.Editor, UploadFolder.Document, document.ID);
        var html = await editorImage.UploadAsync(request.Content, path, ct);

        document.SetContent(html);

        await db.SaveChangesAsync();
        await cache.RemoveByPrefixAsync("document:", ct);

        return Result.Success();
    }
}