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package com.haoxuer.discover.data.utils;

import org.springframework.beans.BeansException;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
import org.springframework.util.ClassUtils;

import java.beans.PropertyDescriptor;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.Arrays;
import java.util.List;

import static org.springframework.beans.BeanUtils.getPropertyDescriptor;
import static org.springframework.beans.BeanUtils.getPropertyDescriptors;

public class BeanDataUtils {

    public static void copyProperties(Object source, Object target) throws BeansException {
        copyProperties(source, target, null, true, (String[]) null);
    }

    public static void copyProperties(Object source, Object target, Class editable) throws BeansException {
        copyProperties(source, target, editable, false, (String[]) null);
    }

    public static void copyProperties(Object source, Object target, String... ignoreProperties) throws BeansException {
        copyProperties(source, target, null, false, ignoreProperties);
    }

    public static void copyProperties(Object source, Object target, boolean ignoreNull, String... ignoreProperties) throws BeansException {
        copyProperties(source, target, null, ignoreNull, ignoreProperties);
    }

    private static void copyProperties(Object source, Object target, @Nullable Class editable
            , boolean ignoreNull, @Nullable String... ignoreProperties) throws BeansException {

        Assert.notNull(source, "Source must not be null");
        Assert.notNull(target, "Target must not be null");

        Class actualEditable = target.getClass();
        if (editable != null) {
            if (!editable.isInstance(target)) {
                throw new IllegalArgumentException("Target class [" + target.getClass().getName() +
                        "] not assignable to Editable class [" + editable.getName() + "]");
            }
            actualEditable = editable;
        }
        PropertyDescriptor[] targetPds = getPropertyDescriptors(actualEditable);
        List ignoreList = (ignoreProperties != null ? Arrays.asList(ignoreProperties) : null);

        for (PropertyDescriptor targetPd : targetPds) {
            Method writeMethod = targetPd.getWriteMethod();
            if (writeMethod != null && (ignoreList == null || !ignoreList.contains(targetPd.getName()))) {
                PropertyDescriptor sourcePd = getPropertyDescriptor(source.getClass(), targetPd.getName());
                if (sourcePd != null) {
                    Method readMethod = sourcePd.getReadMethod();
                    if (readMethod != null &&
                            ClassUtils.isAssignable(writeMethod.getParameterTypes()[0], readMethod.getReturnType())) {
                        try {
                            if (!Modifier.isPublic(readMethod.getDeclaringClass().getModifiers())) {
                                readMethod.setAccessible(true);
                            }
                            Object value = readMethod.invoke(source);
                            if (value == null && ignoreNull) {
                                continue;
                            }
                            if (!Modifier.isPublic(writeMethod.getDeclaringClass().getModifiers())) {
                                writeMethod.setAccessible(true);
                            }
                            writeMethod.invoke(target, value);
                        } catch (Throwable ex) {
                            ex.printStackTrace();
                        }
                    }
                }
            }
        }
    }

}