package com.ots.project.monitor.job.util;
import com.ots.common.utils.StringUtils;
import com.ots.common.utils.spring.SpringUtils;
import com.ots.project.monitor.job.domain.Job;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.LinkedList;
import java.util.List;

public class JobInvokeUtil {
    
    public static void invokeMethod(Job job) throws Exception {
        String invokeTarget = job.getInvokeTarget();
        String beanName = getBeanName(invokeTarget);
        String methodName = getMethodName(invokeTarget);
        List<Object[]> methodParams = getMethodParams(invokeTarget);
        if (!isValidClassName(beanName)) {
            Object bean = SpringUtils.getBean(beanName);
            invokeMethod(bean, methodName, methodParams);
        } else {
            Object bean = Class.forName(beanName).newInstance();
            invokeMethod(bean, methodName, methodParams);
        }
    }
    
    private static void invokeMethod(Object bean, String methodName, List<Object[]> methodParams)
            throws NoSuchMethodException, SecurityException, IllegalAccessException, IllegalArgumentException,
            InvocationTargetException {
        if (StringUtils.isNotNull(methodParams) && methodParams.size() > 0) {
            Method method = bean.getClass().getDeclaredMethod(methodName, getMethodParamsType(methodParams));
            method.invoke(bean, getMethodParamsValue(methodParams));
        } else {
            Method method = bean.getClass().getDeclaredMethod(methodName);
            method.invoke(bean);
        }
    }
    
    public static boolean isValidClassName(String invokeTarget) {
        return StringUtils.countMatches(invokeTarget, ".") > 1;
    }
    
    public static String getBeanName(String invokeTarget) {
        String beanName = StringUtils.substringBefore(invokeTarget, "(");
        return StringUtils.substringBeforeLast(beanName, ".");
    }
    
    public static String getMethodName(String invokeTarget) {
        String methodName = StringUtils.substringBefore(invokeTarget, "(");
        return StringUtils.substringAfterLast(methodName, ".");
    }
    
    public static List<Object[]> getMethodParams(String invokeTarget) {
        String methodStr = StringUtils.substringBetween(invokeTarget, "(", ")");
        if (StringUtils.isEmpty(methodStr)) {
            return null;
        }
        String[] methodParams = methodStr.split(",");
        List<Object[]> classs = new LinkedList<>();
        for (int i = 0; i < methodParams.length; i++) {
            String str = StringUtils.trimToEmpty(methodParams[i]);
            
            if (StringUtils.contains(str, "'")) {
                classs.add(new Object[]{StringUtils.replace(str, "'", ""), String.class});
            }
            
            else if (StringUtils.equals(str, "true") || StringUtils.equalsIgnoreCase(str, "false")) {
                classs.add(new Object[]{Boolean.valueOf(str), Boolean.class});
            }
            
            else if (StringUtils.containsIgnoreCase(str, "L")) {
                classs.add(new Object[]{Long.valueOf(StringUtils.replaceIgnoreCase(str, "L", "")), Long.class});
            }
            
            else if (StringUtils.containsIgnoreCase(str, "D")) {
                classs.add(new Object[]{Double.valueOf(StringUtils.replaceIgnoreCase(str, "D", "")), Double.class});
            }
            
            else {
                classs.add(new Object[]{Integer.valueOf(str), Integer.class});
            }
        }
        return classs;
    }
    
    public static Class<?>[] getMethodParamsType(List<Object[]> methodParams) {
        Class<?>[] classs = new Class<?>[methodParams.size()];
        int index = 0;
        for (Object[] os : methodParams) {
            classs[index] = (Class<?>) os[1];
            index++;
        }
        return classs;
    }
    
    public static Object[] getMethodParamsValue(List<Object[]> methodParams) {
        Object[] classs = new Object[methodParams.size()];
        int index = 0;
        for (Object[] os : methodParams) {
            classs[index] = (Object) os[0];
            index++;
        }
        return classs;
    }
}