package system

import (
	"context"
	"errors"
)

// AuthorityBtnRepo 角色按钮权限仓储接口
type AuthorityBtnRepo interface {
	GetAuthorityBtn(ctx context.Context, authorityId, menuId uint) ([]uint, error)
	SetAuthorityBtn(ctx context.Context, authorityId, menuId uint, btnIds []uint) error
	CanRemoveAuthorityBtn(ctx context.Context, btnId uint) error
}

// AuthorityBtnUsecase 角色按钮权限用例
type AuthorityBtnUsecase struct {
	repo AuthorityBtnRepo
}

// NewAuthorityBtnUsecase 创建角色按钮权限用例
func NewAuthorityBtnUsecase(repo AuthorityBtnRepo) *AuthorityBtnUsecase {
	return &AuthorityBtnUsecase{repo: repo}
}

// GetAuthorityBtn 获取角色按钮权限
func (uc *AuthorityBtnUsecase) GetAuthorityBtn(ctx context.Context, authorityId, menuId uint) ([]uint, error) {
	return uc.repo.GetAuthorityBtn(ctx, authorityId, menuId)
}

// SetAuthorityBtn 设置角色按钮权限
func (uc *AuthorityBtnUsecase) SetAuthorityBtn(ctx context.Context, authorityId, menuId uint, btnIds []uint) error {
	return uc.repo.SetAuthorityBtn(ctx, authorityId, menuId, btnIds)
}

// CanRemoveAuthorityBtn 检查按钮是否可以删除
func (uc *AuthorityBtnUsecase) CanRemoveAuthorityBtn(ctx context.Context, btnId uint) error {
	return uc.repo.CanRemoveAuthorityBtn(ctx, btnId)
}

var ErrBtnInUse = errors.New("此按钮正在被使用无法删除")