package com.xkrs.straw.utils;

import com.xkrs.straw.model.bean.VipLocalDateTimeRangePair;
import com.xkrs.straw.model.bean.VipTimeRangeBean;
import com.xkrs.utils.DateTimeUtils;
import org.apache.hc.core5.util.TextUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

public class VipTimeRangeUtils {

    public static Logger log = LoggerFactory.getLogger(VipTimeRangeUtils.class);

    private VipTimeRangeUtils() {
    }

    /**
     * 校验传入的时间是否在指定的VIP时间范围内
     */
    public static boolean checkIfInVipTimeRange(String vipTimeRangeJson, LocalDateTime targetLocalDateTime) {
        try {
            if (TextUtils.isEmpty(vipTimeRangeJson) || targetLocalDateTime == null) {
                return false;
            }
            VipTimeRangeBean vipTimeRangeBean = JsonUtils.deserialize(vipTimeRangeJson, VipTimeRangeBean.class);
            if (vipTimeRangeBean == null || vipTimeRangeBean.getList() == null || vipTimeRangeBean.getList().size() == 0) {
                return false;
            }
            List<VipLocalDateTimeRangePair> vipLocalDateTimeRangePairList = obtainSortedVipLocalDateTimeRangePairList(vipTimeRangeBean.getList());
            if (vipLocalDateTimeRangePairList.size() == 0) {
                return false;
            }
            for (VipLocalDateTimeRangePair vipLocalDateTimeRangePair : vipLocalDateTimeRangePairList) {
                LocalDateTime startLocalDateTime = vipLocalDateTimeRangePair.getStartLocalDateTime();
                LocalDateTime endLocalDateTime = vipLocalDateTimeRangePair.getEndLocalDateTime();
                if (startLocalDateTime.isBefore(targetLocalDateTime) && endLocalDateTime.isAfter(targetLocalDateTime)) {
                    return true;
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
            log.info("检查是否属于VIP时间范围时出错，详情=" + e.getMessage());
        }
        return false;
    }

    /**
     * 根据一个字符串格式时间的列表 生成 一个LocalDateTime格式时间的列表
     */
    private static List<VipLocalDateTimeRangePair> obtainSortedVipLocalDateTimeRangePairList(List<VipTimeRangeBean.VipTimeRangeItemBean> list) {
        List<VipLocalDateTimeRangePair> vipLocalDateTimeRangePairList = new ArrayList<>();
        try {
            if (list == null || list.size() == 0) {
                return vipLocalDateTimeRangePairList;
            }
            for (VipTimeRangeBean.VipTimeRangeItemBean vipTimeRangeItemBean : list) {
                String startTime = vipTimeRangeItemBean.getStartTime();
                LocalDateTime startLocalDateTime = LocalDateTime.parse(startTime, DateTimeUtils.DATE_TIME_FORMATTER_1);
                String endTime = vipTimeRangeItemBean.getEndTime();
                LocalDateTime endLocalDateTime = LocalDateTime.parse(endTime, DateTimeUtils.DATE_TIME_FORMATTER_1);

                VipLocalDateTimeRangePair vipLocalDateTimeRangePair = new VipLocalDateTimeRangePair();
                vipLocalDateTimeRangePair.setStartLocalDateTime(startLocalDateTime);
                vipLocalDateTimeRangePair.setEndLocalDateTime(endLocalDateTime);
                vipLocalDateTimeRangePairList.add(vipLocalDateTimeRangePair);
            }
            List<VipLocalDateTimeRangePair> sortedVipLocalDateTimeRangePairList = vipLocalDateTimeRangePairList.stream().sorted((o1, o2) -> {
                try {
                    LocalDateTime startLocalDateTime1 = o1.getStartLocalDateTime();
                    LocalDateTime endLocalDateTime1 = o1.getEndLocalDateTime();
                    LocalDateTime startLocalDateTime2 = o2.getStartLocalDateTime();
                    LocalDateTime endLocalDateTime2 = o2.getEndLocalDateTime();
                    if (startLocalDateTime1.isBefore(startLocalDateTime2) && endLocalDateTime1.isBefore(endLocalDateTime2)) {
                        return 1;
                    }
                    if (startLocalDateTime1.isAfter(startLocalDateTime2) && endLocalDateTime1.isAfter(endLocalDateTime2)) {
                        return -1;
                    }
                    return 0;
                } catch (Exception e) {
                    e.printStackTrace();
                }
                return 0;
            }).collect(Collectors.toList());
            log.info("原始集合size=" + list.size() + "，格式化后的集合size=" + vipLocalDateTimeRangePairList.size() + "，排序后的集合size=" + sortedVipLocalDateTimeRangePairList.size());
            return sortedVipLocalDateTimeRangePairList;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return vipLocalDateTimeRangePairList;
    }


}