/**
 * 订单审批工作流类，管理订单的审批流程
 */
package com.orderprocessing;

import java.util.ArrayList;
import java.util.List;

public class ApprovalWorkflow {
    private List<ApprovalRule> rules;
    private Logger logger;
    
    /**
     * 构造方法
     * @param logger 日志记录器
     */
    public ApprovalWorkflow(Logger logger) {
        this.logger = logger;
        this.rules = new ArrayList<>();
    }
    
    /**
     * 添加审批规则
     * @param rule 审批规则
     */
    public void addApprovalRule(ApprovalRule rule) {
        rules.add(rule);
        logger.log("添加审批规则: " + rule.getDescription());
    }
    
    /**
     * 检查订单是否需要审批，并获取所需的最高审批级别
     * @param order 需要检查的订单
     * @return 所需的最高审批级别，如果不需要审批则返回0
     */
    public int checkApprovalRequirements(Order order) {
        logger.log("开始检查订单 " + order.getOrderId() + " 的审批需求");
        
        int maxApprovalLevel = 0;
        List<String> triggeredRules = new ArrayList<>();
        
        for (ApprovalRule rule : rules) {
            if (rule.requiresApproval(order)) {
                triggeredRules.add(rule.getDescription());
                maxApprovalLevel = Math.max(maxApprovalLevel, rule.getApprovalLevel());
            }
        }
        
        if (maxApprovalLevel > 0) {
            logger.log("订单 " + order.getOrderId() + " 需要 " + maxApprovalLevel + " 级审批");
            for (String ruleDesc : triggeredRules) {
                logger.log("触发规则: " + ruleDesc);
            }
        } else {
            logger.log("订单 " + order.getOrderId() + " 不需要额外审批");
        }
        
        return maxApprovalLevel;
    }
    
    /**
     * 处理订单审批流程
     * @param order 需要审批的订单
     * @param approverLevel 审批者级别
     * @return 如果审批通过返回true，否则返回false
     */
    public boolean processApproval(Order order, int approverLevel) {
        int requiredLevel = checkApprovalRequirements(order);
        
        if (requiredLevel == 0) {
            logger.log("订单 " + order.getOrderId() + " 自动审批通过");
            return true;
        }
        
        if (approverLevel >= requiredLevel) {
            logger.log("订单 " + order.getOrderId() + " 审批通过（审批者级别: " + 
                      approverLevel + ", 所需级别: " + requiredLevel + "）");
            return true;
        } else {
            logger.log("订单 " + order.getOrderId() + " 审批失败：审批者级别不足（审批者级别: " + 
                      approverLevel + ", 所需级别: " + requiredLevel + "）");
            return false;
        }
    }
}