using PnvPanel.Application.Common.Interfaces;
using PnvPanel.Application.Common.Messaging;
using PnvPanel.Application.Common.Models;

namespace PnvPanel.Application.Support.ListSelectableRoles;

public sealed class ListSelectableRolesQueryHandler(IRoleService roleService)
    : IQueryHandler<ListSelectableRolesQuery, Result<IReadOnlyList<RoleDto>>>
{
    // Совпадает со значением Infrastructure.Identity.RoleNames.Admin — см. пояснение в
    // CreateRoleRequestTicketCommandHandler (Application не может ссылаться на Infrastructure).
    private const string AdminRoleName = "admin";

    public async Task<Result<IReadOnlyList<RoleDto>>> Handle(ListSelectableRolesQuery query, CancellationToken cancellationToken)
    {
        var roles = await roleService.ListRolesAsync(cancellationToken);
        var selectable = roles.Where(r => !r.Name.Equals(AdminRoleName, StringComparison.OrdinalIgnoreCase)).ToList();

        return Result.Success<IReadOnlyList<RoleDto>>(selectable);
    }
}