package com.stylefeng.guns.modular.system.service.impl;

import com.baomidou.mybatisplus.plugins.Page;
import com.baomidou.mybatisplus.service.impl.ServiceImpl;
import com.stylefeng.guns.core.common.constant.travelcard.TravelCardStatusEnum;
import com.stylefeng.guns.modular.system.dao.TravelCardMapper;
import com.stylefeng.guns.modular.system.model.TravelCard;
import com.stylefeng.guns.modular.system.service.ITravelCardService;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.security.SecureRandom;
import java.util.*;

/**
 * <p>
 *    出行卡，服务实现类
 * </p>
 * @author Lux
 * @version 1.0.0
 * @since 2026/6/17 18:21
 */
@Slf4j
@Service
@AllArgsConstructor
public class TravelCardServiceImpl extends ServiceImpl<TravelCardMapper, TravelCard> implements ITravelCardService {

    private static final char[] PASSWORD_CHARS = {'A','B','C','D','E','F','G','H', 'J','K','M','N','P','Q','R','S', 'T','U','V','W','X','Y','Z'};
    private static final SecureRandom RANDOM = new SecureRandom();

    /**
     * 生成出行卡
     *
     * @param packageId 卡包ID
     * @param amount 卡金额
     * @param total 卡数量
     */
    @Transactional
    public boolean generateTravelCard(Integer packageId, BigDecimal amount, Integer total) {
        if(Objects.isNull(packageId)) {
            log.error("生成出行卡-卡包ID为空，则不执行生成逻辑！");
            return false;
        }
        if(Objects.isNull(total) || Objects.isNull(amount)) {
            log.error("生成出行卡-金额或数量为空，则不执行生成逻辑！");
            return false;
        }
        // 1、查询当前最大卡号
        String maxCardNo = this.baseMapper.getMaxCardNo();
        int startNo;
        // 第一批卡从011001开始
        if (StringUtils.isBlank(maxCardNo)) {
            startNo = 11001;
        } else {
            startNo = Integer.parseInt(maxCardNo) + 1;
        }
        // 2、生成卡信息
        List<TravelCard> dataList = new ArrayList<>(total);
        Date now = new Date();
        for (int i = 0; i < total; i++) {
            TravelCard card = new TravelCard();
            card.setPackageId(packageId);
            String cardNo = String.format("%06d", startNo + i);
            card.setCardNo(cardNo);    // 卡号
            card.setCardPassword(generatePassword());  // 密码
            card.setAmount(amount); // 金额
            card.setStatus(TravelCardStatusEnum.UN_RECHARGE.getCode());   // 未充值
            card.setInsertTime(now);
            dataList.add(card);
        }
        if(CollectionUtils.isNotEmpty(dataList)) {
            insertBatch(dataList);
        }
        return true;
    }

    /**
     * 生成6位密码
     */
    private String generatePassword() {
        StringBuilder sb = new StringBuilder(6);
        for (int i = 0; i < 6; i++) {
            sb.append(PASSWORD_CHARS[RANDOM.nextInt(PASSWORD_CHARS.length)]);
        }
        return sb.toString();
    }

    /**
     * 根据卡包查询出行卡
     *
     * @param packageId 卡包ID
     * @return 出行卡列表
     */
    public List<Map<String, Object>> getTravelCardByPackageId(Integer packageId) {
        return this.baseMapper.getTravelCardByPackageId(packageId);
    }

    /**
     * 出行卡列表
     *
     * @param page 分页
     * @param packageId 包id
     * @param cardNo 卡号
     * @param rechargeUserPhone 充值用户手机
     * @param status 状态
     * @return 列表数据
     */
    public List<Map<String, Object>> getTravelCardList(Page<Map<String, Object>> page, Integer packageId, String cardNo, String rechargeUserPhone, Integer status) {

        return this.baseMapper.getTravelCardList(page, packageId, cardNo, rechargeUserPhone, status);
    }

    /**
     * 查询已充值数量
     *
     * @param packageId 包ID
     * @return 充值数量
     */
    public Integer rechargeCount(Integer packageId) {
        return this.baseMapper.rechargeCount(packageId, TravelCardStatusEnum.RECHARGED.getCode());
    }

    /**
     * 查询卡包下所有出行卡数量
     *
     * @param packageId 包ID
     * @return 出行卡数量
     */
    public Integer countByPackageId(Integer packageId) {
        return this.baseMapper.rechargeCount(packageId, null);
    }

}