public class VPApprover extends BaseApprover {
    private static final double MAX_APPROVAL_AMOUNT = 50000.0;
    private static final double MIN_APPROVAL_AMOUNT = 10000.01; // 大于总监的审批上限
    
    public VPApprover(String approverName, Logger logger) {
        super(approverName, ApprovalLevel.VP, logger);
    }
    
    @Override
    protected boolean canApprove(Order order) {
        // VP只能审批金额在10000.01到50000之间的订单
        return order.getAmount() > MIN_APPROVAL_AMOUNT && order.getAmount() <= MAX_APPROVAL_AMOUNT;
    }
    
    @Override
    protected boolean performApproval(Order order, ApprovalContext context) {
        // VP审批逻辑：更严格的审批条件
        OrderValidator validator = new OrderValidator();
        boolean basicValid = validator.validateOrder(order);
        
        // 检查订单历史（如果有的话）
        if (context.getApprovalHistory().size() > 0) {
            // 确保所有前置审批都通过
            boolean allPreviousApproved = context.getApprovalHistory().stream()
                .allMatch(record -> record.approved);
            if (!allPreviousApproved) {
                getLogger().warn("存在未通过的前置审批，VP审批被拒绝");
                return false;
            }
        }
        
        // 大额订单检查：超过25000的订单需要额外验证
        if (order.getAmount() > 25000) {
            getLogger().info("大额订单，执行额外验证");
            // 假设这里会调用额外的验证服务
        }
        
        return basicValid;
    }
}