package com.ruoyi.system.service.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.collection.CollUtil;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.google.common.collect.Lists;
import com.ruoyi.common.constant.UserConstants;
import com.ruoyi.common.core.mybatisplus.core.ServicePlusImpl;
import com.ruoyi.common.core.page.PagePlus;
import com.ruoyi.common.core.page.TableDataInfo;
import com.ruoyi.common.exception.ServiceException;
import com.ruoyi.common.utils.JsonUtils;
import com.ruoyi.common.utils.PageUtils;
import com.ruoyi.common.utils.RedisUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.oss.constant.OssConstant;
import com.ruoyi.oss.factory.OssFactory;
import com.ruoyi.system.domain.SysOssConfig;
import com.ruoyi.system.domain.bo.SysOssConfigBo;
import com.ruoyi.system.domain.vo.SysOssConfigVo;
import com.ruoyi.system.mapper.SysOssConfigMapper;
import com.ruoyi.system.service.ISysOssConfigService;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.Collection;
import java.util.List;

/**
 * 对象存储配置Service业务层处理
 *
 * @author Lion Li
 * @author 孤舟烟雨
 * @date 2021-08-13
 */
@Slf4j
@RequiredArgsConstructor(onConstructor_ = @Autowired)
@Service
public class SysOssConfigServiceImpl extends ServicePlusImpl<SysOssConfigMapper, SysOssConfig, SysOssConfigVo> implements ISysOssConfigService {

    /**
     * 项目启动时，初始化参数到缓存，加载配置类
     */
    @Override
    public void init() {
        List<SysOssConfig> list = list();
        // 加载OSS初始化配置
        for (SysOssConfig config : list) {
            String configKey = config.getConfigKey();
            if ("0".equals(config.getStatus())) {
                RedisUtils.setCacheObject(OssConstant.CACHE_CONFIG_KEY, configKey);
            }
            setConfigCache(true, config);
        }
        // 初始化OSS工厂
        OssFactory.init();
    }

    @Override
    public SysOssConfigVo queryById(Integer ossConfigId) {
        return getVoById(ossConfigId);
    }

    @Override
    public TableDataInfo<SysOssConfigVo> queryPageList(SysOssConfigBo bo) {
        PagePlus<SysOssConfig, SysOssConfigVo> result = pageVo(PageUtils.buildPagePlus(), buildQueryWrapper(bo));
        return PageUtils.buildDataInfo(result);
    }


    private LambdaQueryWrapper<SysOssConfig> buildQueryWrapper(SysOssConfigBo bo) {
        LambdaQueryWrapper<SysOssConfig> lqw = Wrappers.lambdaQuery();
        lqw.eq(StringUtils.isNotBlank(bo.getConfigKey()), SysOssConfig::getConfigKey, bo.getConfigKey());
        lqw.like(StringUtils.isNotBlank(bo.getBucketName()), SysOssConfig::getBucketName, bo.getBucketName());
        lqw.eq(StringUtils.isNotBlank(bo.getStatus()), SysOssConfig::getStatus, bo.getStatus());
        return lqw;
    }

    @Override
    public Boolean insertByBo(SysOssConfigBo bo) {
        SysOssConfig config = BeanUtil.toBean(bo, SysOssConfig.class);
        validEntityBeforeSave(config);
        return setConfigCache(save(config), config);
    }

    @Override
    public Boolean updateByBo(SysOssConfigBo bo) {
        SysOssConfig config = BeanUtil.toBean(bo, SysOssConfig.class);
        validEntityBeforeSave(config);
        LambdaUpdateWrapper<SysOssConfig> luw = new LambdaUpdateWrapper<>();
        luw.set(StringUtils.isBlank(config.getPrefix()), SysOssConfig::getPrefix, "");
        luw.set(StringUtils.isBlank(config.getRegion()), SysOssConfig::getRegion, "");
        luw.set(StringUtils.isBlank(config.getExt1()), SysOssConfig::getExt1, "");
        luw.eq(SysOssConfig::getOssConfigId, config.getOssConfigId());
        return setConfigCache(update(config, luw), config);
    }

    /**
     * 保存前的数据校验
     */
    private void validEntityBeforeSave(SysOssConfig entity) {
        if (StringUtils.isNotEmpty(entity.getConfigKey())
                && UserConstants.NOT_UNIQUE.equals(checkConfigKeyUnique(entity))) {
            throw new ServiceException("操作配置'" + entity.getConfigKey() + "'失败, 配置key已存在!");
        }
    }

    @Override
    public Boolean deleteWithValidByIds(Collection<Long> ids, Boolean isValid) {
        if (isValid) {
            if (CollUtil.containsAny(ids, OssConstant.SYSTEM_DATA_IDS)) {
                throw new ServiceException("系统内置, 不可删除!");
            }
        }
        List<SysOssConfig> list = Lists.newArrayList();
        for (Long configId : ids) {
            SysOssConfig config = getById(configId);
            list.add(config);
        }
        boolean flag = removeByIds(ids);
        if (flag) {
            list.stream().forEach(sysOssConfig -> {
                RedisUtils.deleteObject(getCacheKey(sysOssConfig.getConfigKey()));
            });
        }
        return flag;
    }

    /**
     * 判断configKey是否唯一
     */
    private String checkConfigKeyUnique(SysOssConfig sysOssConfig) {
        long ossConfigId = StringUtils.isNull(sysOssConfig.getOssConfigId()) ? -1L : sysOssConfig.getOssConfigId();
        SysOssConfig info = getOne(new LambdaQueryWrapper<SysOssConfig>()
                .select(SysOssConfig::getOssConfigId, SysOssConfig::getConfigKey)
                .eq(SysOssConfig::getConfigKey, sysOssConfig.getConfigKey()));
        if (StringUtils.isNotNull(info) && info.getOssConfigId() != ossConfigId) {
            return UserConstants.NOT_UNIQUE;
        }
        return UserConstants.UNIQUE;
    }

    /**
     * 启用禁用状态
     */
    @Override
    @Transactional(rollbackFor = Exception.class)
    public int updateOssConfigStatus(SysOssConfigBo bo) {
        SysOssConfig sysOssConfig = BeanUtil.toBean(bo, SysOssConfig.class);
        int row = baseMapper.update(null, new LambdaUpdateWrapper<SysOssConfig>()
                .set(SysOssConfig::getStatus, "1"));
        row += baseMapper.updateById(sysOssConfig);
        if (row > 0) {
            RedisUtils.setCacheObject(OssConstant.CACHE_CONFIG_KEY, sysOssConfig.getConfigKey());
        }
        return row;
    }

    /**
     * 设置cache key
     *
     * @param configKey 参数键
     * @return 缓存键key
     */
    private String getCacheKey(String configKey) {
        return OssConstant.SYS_OSS_KEY + configKey;
    }

    /**
     * 如果操作成功 则更新缓存
     *
     * @param flag   操作状态
     * @param config 配置
     * @return 返回操作状态
     */
    private boolean setConfigCache(boolean flag, SysOssConfig config) {
        if (flag) {
            RedisUtils.setCacheObject(
                    getCacheKey(config.getConfigKey()),
                    JsonUtils.toJsonString(config));
            RedisUtils.publish(OssConstant.CACHE_CONFIG_KEY, config.getConfigKey(), msg -> {
                log.info("发布刷新OSS配置 => " + msg);
            });
        }
        return flag;
    }
}