using AutoMapper;
using MediatR;
using Mws.Application.Common;
using Mws.Application.Permissions;

namespace Mws.Application.Accounts;

public record UpdateAccountCommand(Guid ActorUserId, Guid Id, UpdateAccountRequest Request) : IRequest<AccountDto>;

public class UpdateAccountHandler(IUnitOfWork uow, IPermissionService permissions, IMapper mapper)
    : IRequestHandler<UpdateAccountCommand, AccountDto>
{
    private const string Screen = "accounts";

    public async Task<AccountDto> Handle(UpdateAccountCommand command, CancellationToken ct)
    {
        await permissions.EnsureAsync(command.ActorUserId, Screen, PermissionAction.Edit, ct);

        var user = await uow.Users.GetByIdWithRoleAsync(command.Id, ct)
            ?? throw new NotFoundException("Account not found");

        var request = command.Request;
        var role = await uow.Roles.GetByIdAsync(request.RoleId, ct)
            ?? throw new BadRequestException("Role not found");

        user.DisplayName = request.DisplayName.Trim();
        user.RoleId = role.Id;
        user.Role = role;
        user.IsActive = request.IsActive;
        user.UpdatedAt = DateTime.UtcNow;

        await uow.SaveChangesAsync(ct);
        return mapper.Map<AccountDto>(user);
    }
}