using System.Data;
using AMREZ.EOP.Abstractions.Applications.UseCases.MasterData.Allergen;
using AMREZ.EOP.Abstractions.Infrastructures.Common;
using AMREZ.EOP.Abstractions.Infrastructures.Repositories;
using AMREZ.EOP.Contracts.DTOs.MasterData.Allergen;

namespace AMREZ.EOP.Application.UseCases.MasterData.Allergen;

public class UpdateAllergenUseCase :  IUpdateAllergenUseCase
{
    private readonly IAllergenRepository _repo;
    private readonly IUnitOfWork _uow;

    public UpdateAllergenUseCase(IAllergenRepository repo, IUnitOfWork uow) { _repo = repo; _uow = uow; }

    public async Task<AllergenResponse?> ExecuteAsync(Guid id, AllergenUpdateRequest req, CancellationToken ct = default)
    {
        await _uow.BeginAsync(null, IsolationLevel.ReadCommitted, ct);
        try
        {
            var e = await _repo.GetAsync(id, ct);
            if (e is null) { await _uow.RollbackAsync(ct); return null; }

            e.Name = req.Name.Trim();
            e.NameI18n = req.NameI18n;
            e.Meta = req.Meta;
            e.IsActive = req.IsActive;

            await _repo.UpdateAsync(e, ct);
            await _uow.CommitAsync(ct);

            return new AllergenResponse(e.Id, e.Scope, e.Code, e.Name, e.NameI18n, e.OverridesGlobalId, e.IsActive, e.IsSystem, e.Meta);
        }
        catch
        {
            await _uow.RollbackAsync(ct);
            throw;
        }
    }
}