package com.finance.web.controller.interceptor;

import com.finance.framework.web.service.TokenService;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.Objects;
import java.util.Properties;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.executor.Executor;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.SqlCommandType;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.plugin.Intercepts;
import org.apache.ibatis.plugin.Invocation;
import org.apache.ibatis.plugin.Plugin;
import org.apache.ibatis.plugin.Signature;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Slf4j
@Component
@Intercepts({@Signature(type = Executor.class, method = "update" , args = {MappedStatement.class,
        Object.class})})
public class MybatisInterceptor implements Interceptor {

    @Autowired
    private TokenService tokenService;

    @Override
    public Object intercept(Invocation invocation) throws Throwable {
        MappedStatement mappedStatement = (MappedStatement) invocation.getArgs()[0];
        log.debug("{}:" + mappedStatement);
        log.debug("------sqlId------" + mappedStatement.getId());
        if ("com.finance.system.mapper.SysLogininforMapper.insertLogininfor".equals(
                mappedStatement.getId())) {
            return invocation.proceed();
        }
        // sql类型：insert、update、select、delete
        SqlCommandType sqlCommandType = mappedStatement.getSqlCommandType();
        Object parameter = invocation.getArgs()[1];
        log.debug("------sqlCommandType------" + sqlCommandType);

        if (parameter == null) {
            return invocation.proceed();
        }

        // 当sql为新增或更新类型时，自动填充操作人相关信息
        if (SqlCommandType.INSERT == sqlCommandType) {

            Field[] fields = getAllFields(parameter);
            for (Field field : fields) {
                try {
                    // 注入创建人
                    if ("createBy".equals(field.getName())) {
                        // 获取当前登录用户信息
                        if (Objects.nonNull(tokenService.getLoginUser())) {
                            String userName = tokenService.getLoginUser().getUser().getUserName();
                            field.setAccessible(true);
                            field.set(parameter, userName);
                            field.setAccessible(false);
                        }
                    }
                    //注入创建时间
                    if ("createTime".equals(field.getName())) {
                        field.setAccessible(true);
                        field.set(parameter, new Date());
                        field.setAccessible(false);
                    }
                } catch (Exception e) {
                    log.error("failed to insert data, exception = " , e);
                }
            }
        }
        if (SqlCommandType.UPDATE == sqlCommandType) {
            Field[] fields = getAllFields(parameter);
            for (Field field : fields) {
                try {
                    if ("updateBy".equals(field.getName())) {
                        // 获取当前登录用户信息
                        if (Objects.nonNull(tokenService.getLoginUser())) {
                            String userName = tokenService.getLoginUser().getUser().getUserName();
                            field.setAccessible(true);
                            field.set(parameter, userName);
                            field.setAccessible(false);
                        }
                    }
                    if ("updateTime".equals(field.getName())) {
                        field.setAccessible(true);
                        field.set(parameter, new Date());
                        field.setAccessible(false);
                    }
                } catch (Exception e) {
                    log.error("failed to update data, exception = " , e);
                }
            }
        }
        return invocation.proceed();
    }

    @Override
    public Object plugin(Object target) {
        return Plugin.wrap(target, this);
    }

    @Override
    public void setProperties(Properties properties) {
        // TODO Auto-generated method stub
    }

    /**
     * 获取类的所有属性，包括父类
     *
     * @param object
     * @return
     */
    private Field[] getAllFields(Object object) {
        Class<?> clazz = object.getClass();
        List<Field> fieldList = new ArrayList<>();
        while (clazz != null) {
            fieldList.addAll(new ArrayList<>(Arrays.asList(clazz.getDeclaredFields())));
            clazz = clazz.getSuperclass();
        }
        Field[] fields = new Field[fieldList.size()];
        fieldList.toArray(fields);
        return fields;
    }

}