using F9WebAiTest.Application.Common.Exceptions;
using F9WebAiTest.Application.Interfaces.SnowflakeID;
using F9WebAiTest.Domain.Entities.SYS.RBAC;
using F9WebAiTest.Domain.Interfaces.SYS.RBAC.Roles;
using MediatR;

namespace F9WebAiTest.Application.CQRS.SYS.RBAC.Roles.Commands;

/// <summary>命令定义</summary>
public record Role_CreateCommand(string Name, string Code, int SortOrder, string Description) : IRequest<long>;

/// <summary>命令处理器</summary>
public class CreateRoleCommandHandler(
    IRoleWriteRepository roleRepository,
    ISnowflakeIdGenerator snowflakeIdGenerator) : IRequestHandler<Role_CreateCommand, long>
{
    public async Task<long> Handle(Role_CreateCommand command, CancellationToken cancellationToken)
    {
        if (string.IsNullOrWhiteSpace(command.Name)) throw new F9OperationException("角色名称不能为空");
        if (string.IsNullOrWhiteSpace(command.Code)) throw new F9OperationException("角色编码不能为空");

        var newEntity = new Role(snowflakeIdGenerator.CreateId(), command.Name, command.Code, command.SortOrder, command.Description);
        var result = await roleRepository.AddAsync(newEntity);
        if (result == false) throw new F9OperationException("角色", "新增");
        return newEntity.Id;
    }
}