using GozareshgirProgramManager.Application._Common.Interfaces;
using GozareshgirProgramManager.Application._Common.Models;
using GozareshgirProgramManager.Domain._Common;
using GozareshgirProgramManager.Domain.ProjectAgg.Repositories;
using MediatR;

namespace GozareshgirProgramManager.Application.Modules.Projects.Commands.AddPhaseToProject;

public class AddPhaseToProjectCommandHandler : IRequestHandler<AddPhaseToProjectCommand, OperationResult>
{
    private readonly IProjectRepository _projectRepository;
    private readonly IUnitOfWork _unitOfWork;

    public AddPhaseToProjectCommandHandler(
        IProjectRepository projectRepository,
        IUnitOfWork unitOfWork)
    {
        _projectRepository = projectRepository;
        _unitOfWork = unitOfWork;
    }

    public async Task<OperationResult> Handle(AddPhaseToProjectCommand request, CancellationToken cancellationToken)
    {
        try
        {
            // Get project
            var project = await _projectRepository.GetByIdAsync(request.ProjectId);
            if (project == null)
            {
                return OperationResult.NotFound("پروژه یافت نشد");
            }

            // Add phase
            var phase = project.AddPhase(request.Name, request.Description);
            phase.SetOrderIndex(request.OrderIndex);

            // Save changes
            await _unitOfWork.SaveChangesAsync(cancellationToken);

            return OperationResult.Success();
        }
        catch (Exception ex)
        {
            return OperationResult.Failure($"خطا در افزودن فاز: {ex.Message}");
        }
    }
}