package com.ots.framework.aspectj;
import com.ots.common.utils.StringUtils;
import com.ots.common.utils.security.ShiroUtils;
import com.ots.framework.aspectj.lang.annotation.DataScope;
import com.ots.framework.web.domain.BaseEntity;
import com.ots.project.system.role.domain.Role;
import com.ots.project.system.user.domain.User;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;
import java.lang.reflect.Method;

@Aspect
@Component
public class DataScopeAspect {
    
    public static final String DATA_SCOPE_ALL = "1";
    
    public static final String DATA_SCOPE_CUSTOM = "2";
    
    public static final String DATA_SCOPE_DEPT = "3";
    
    public static final String DATA_SCOPE_DEPT_AND_CHILD = "4";
    
    public static final String DATA_SCOPE_SELF = "5";
    
    public static final String DATA_SCOPE = "dataScope";
    
    @Pointcut("@annotation(com.ots.framework.aspectj.lang.annotation.DataScope)")
    public void dataScopePointCut() {
    }
    @Before("dataScopePointCut()")
    public void doBefore(JoinPoint point) throws Throwable {
        handleDataScope(point);
    }
    protected void handleDataScope(final JoinPoint joinPoint) {
        
        DataScope controllerDataScope = getAnnotationLog(joinPoint);
        if (controllerDataScope == null) {
            return;
        }
        
        User currentUser = ShiroUtils.getSysUser();
        if (currentUser != null) {
            
            if (!currentUser.isAdmin()) {
                dataScopeFilter(joinPoint, currentUser, controllerDataScope.deptAlias(),
                        controllerDataScope.userAlias());
            }
        }
    }
    
    public static void dataScopeFilter(JoinPoint joinPoint, User user, String deptAlias, String userAlias) {
        StringBuilder sqlString = new StringBuilder();
        for (Role role : user.getRoles()) {
            String dataScope = role.getDataScope();
            if (DATA_SCOPE_ALL.equals(dataScope)) {
                sqlString = new StringBuilder();
                break;
            } else if (DATA_SCOPE_CUSTOM.equals(dataScope)) {
                sqlString.append(StringUtils.format(
                        " OR {}.dept_id IN ( SELECT dept_id FROM sys_role_dept WHERE role_id = {} ) ", deptAlias,
                        role.getRoleId()));
            } else if (DATA_SCOPE_DEPT.equals(dataScope)) {
                sqlString.append(StringUtils.format(" OR {}.dept_id = {} ", deptAlias, user.getDeptId()));
            } else if (DATA_SCOPE_DEPT_AND_CHILD.equals(dataScope)) {
                sqlString.append(StringUtils.format(
                        " OR {}.dept_id IN ( SELECT dept_id FROM sys_dept WHERE dept_id = {} or find_in_set( {} , ancestors ) )",
                        deptAlias, user.getDeptId(), user.getDeptId()));
            } else if (DATA_SCOPE_SELF.equals(dataScope)) {
                if (StringUtils.isNotBlank(userAlias)) {
                    sqlString.append(StringUtils.format(" OR {}.user_id = {} ", userAlias, user.getUserId()));
                } else {
                    
                    sqlString.append(" OR 1=0 ");
                }
            }
        }
        if (StringUtils.isNotBlank(sqlString.toString())) {
            BaseEntity baseEntity = (BaseEntity) joinPoint.getArgs()[0];
            baseEntity.getParams().put(DATA_SCOPE, " AND (" + sqlString.substring(4) + ")");
        }
    }
    
    private DataScope getAnnotationLog(JoinPoint joinPoint) {
        Signature signature = joinPoint.getSignature();
        MethodSignature methodSignature = (MethodSignature) signature;
        Method method = methodSignature.getMethod();
        if (method != null) {
            return method.getAnnotation(DataScope.class);
        }
        return null;
    }
}