package cn.besteam.config.mybatis;

import cn.besteam.common.util.oConvertUtils;
import cn.besteam.modules.shiro.authc.util.EnvUtils;
import cn.besteam.modules.system.entity.SysUser;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.binding.MapperMethod.ParamMap;
import org.apache.ibatis.executor.Executor;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.SqlCommandType;
import org.apache.ibatis.plugin.*;
import org.springframework.stereotype.Component;

import java.lang.reflect.Field;
import java.util.Date;
import java.util.Properties;

/**
 * mybatis拦截器，自动注入创建人、创建时间、修改人、修改时间
 *
 * @author scott
 * @date 2019-01-19
 */
@Slf4j
@Component
@Intercepts({@Signature(type = Executor.class, method = "update", args = {MappedStatement.class, Object.class})})
public class MybatisInterceptor implements Interceptor {

    @Override
    public Object intercept(Invocation invocation) throws Throwable {

        MappedStatement mappedStatement = (MappedStatement) invocation.getArgs()[0];
        String sqlId = mappedStatement.getId();
        // log.debug("------sqlId------" + sqlId);
        SqlCommandType sqlCommandType = mappedStatement.getSqlCommandType();
        Object parameter = invocation.getArgs()[1];
        // log.info("------sqlCommandType------" + sqlCommandType);
        if (parameter == null) {
            return invocation.proceed();
        }
        if (SqlCommandType.INSERT == sqlCommandType) {
            Field[] fields = parameter.getClass().getDeclaredFields();
            for (Field field : fields) {
                // log.debug("------field.name------" + field.getName());
                try {
                    if ("creator".equals(field.getName())) {
                        field.setAccessible(true);
                        Object local_createBy = field.get(parameter);
                        field.setAccessible(false);
                        if (local_createBy == null || local_createBy.equals("")) {
                            String creator = null;
                            // 获取登录用户信息
                            SysUser user = EnvUtils.getUser();
                            if (user != null) {
                                // 登录账号
                                creator = user.getName();
                            }
                            if (!oConvertUtils.isEmpty(creator)) {
                                field.setAccessible(true);
                                field.set(parameter, creator);
                                field.setAccessible(false);
                            }
                        }
                    }
                    if ("createBy".equals(field.getName())) {
                        field.setAccessible(true);
                        Object local_createBy = field.get(parameter);
                        field.setAccessible(false);
                        if (local_createBy == null || local_createBy.equals("")) {
                            Integer createBy = null;
                            // 获取登录用户信息
                            SysUser user = EnvUtils.getUser();
                            if (user != null) {
                                // 登录账号
                                createBy = user.getId();
                            }
                            if (!oConvertUtils.isEmpty(createBy)) {
                                field.setAccessible(true);
                                field.set(parameter, createBy);
                                field.setAccessible(false);
                            }
                        }
                    }
                    // 注入创建时间
                    if ("createTime".equals(field.getName())) {
                        field.setAccessible(true);
                        Object local_createDate = field.get(parameter);
                        field.setAccessible(false);
                        if (local_createDate == null || local_createDate.equals("")) {
                            field.setAccessible(true);
                            field.set(parameter, new Date());
                            field.setAccessible(false);
                        }
                    }
                } catch (Exception e) {
                }
            }
        }
        if (SqlCommandType.UPDATE == sqlCommandType) {
            Field[] fields = null;
            if (parameter instanceof ParamMap) {
                ParamMap<?> p = (ParamMap<?>) parameter;
                if (p.containsKey("et")) {
                    parameter = p.get("et");
                } else {
                    parameter = p.get("param1");
                }
                fields = parameter.getClass().getDeclaredFields();
            } else {
                fields = parameter.getClass().getDeclaredFields();
            }
            for (Field field : fields) {
                // log.debug("------field.name------" + field.getName());
                try {
                    if ("updateBy".equals(field.getName())) {
                        field.setAccessible(true);
                        Object local_updateBy = field.get(parameter);
                        field.setAccessible(false);
                        if (local_updateBy == null || local_updateBy.equals("")) {
                            Integer updateBy = null;
                            // 获取登录用户信息
                            SysUser user = EnvUtils.getUser();
                            if (user != null) {
                                // 登录账号
                                updateBy = user.getId();
                            }
                            if (!oConvertUtils.isEmpty(updateBy)) {
                                field.setAccessible(true);
                                field.set(parameter, updateBy);
                                field.setAccessible(false);
                            }
                        }
                    }
                    if ("updateTime".equals(field.getName())) {
                        field.setAccessible(true);
                        Object local_updateDate = field.get(parameter);
                        field.setAccessible(false);
                        if (local_updateDate == null || local_updateDate.equals("")) {
                            field.setAccessible(true);
                            field.set(parameter, new Date());
                            field.setAccessible(false);
                        }
                    }
                } catch (Exception e) {
                }
            }
        }
        return invocation.proceed();
    }

    @Override
    public Object plugin(Object target) {

        return Plugin.wrap(target, this);
    }

    @Override
    public void setProperties(Properties properties) {
        //
    }

}