using AutoMapper;
using MediatR;
using mws.backend.dotnet.application.Common;
using mws.backend.dotnet.domain.Projects;

namespace mws.backend.dotnet.application.Projects;

public record UpdateProjectCommand(Guid UserId, Guid ProjectId, UpdateProjectRequest Request) : IRequest<ProjectDto>;

public class UpdateProjectHandler(IUnitOfWork uow, IMapper mapper) : IRequestHandler<UpdateProjectCommand, ProjectDto>
{
    public async Task<ProjectDto> Handle(UpdateProjectCommand command, CancellationToken ct)
    {
        var project = await ProjectAccess.GetForUserOrThrowAsync(uow, command.UserId, command.ProjectId, ct);

        if (MemberRole.Owner != await uow.Projects.GetMemberRoleAsync(command.ProjectId, command.UserId, ct))
        {
            throw new ForbiddenException("Only the project owner can update the project");
        }

        var request = command.Request;
        if (string.IsNullOrWhiteSpace(request.Name))
        {
            throw new BadRequestException("Project name is required");
        }

        project.Name = request.Name.Trim();
        project.Description = request.Description;
        project.Status = request.Status;
        project.UpdatedBy = command.UserId;
        project.UpdatedAt = DateTime.UtcNow;

        await uow.SaveChangesAsync(ct);
        return mapper.Map<ProjectDto>(project);
    }
}