package com.runt.open.mvi.base.model

import android.util.Log
import androidx.lifecycle.ViewModel
import androidx.lifecycle.ViewModelProvider
import java.lang.reflect.InvocationTargetException

/**
 * @author Runt(qingingrunt2010 @ qq.com)
 * @purpose
 * @date 6/1/24
 */
class ViewModelFactory : ViewModelProvider.Factory {


    override fun <T : ViewModel> create(modelClass : Class<T>) : T {
        return try {
            modelClass.getDeclaredConstructor().newInstance()
        } catch (e : InstantiationException) {
            throw RuntimeException("（创建实例失败，没有对应的构造方法，请重写一个实现类）Cannot create an instance of $modelClass" , e)
        } catch (e : IllegalAccessException) {
            throw RuntimeException("Cannot create an instance of $modelClass" , e)
        }catch (e : UnsatisfiedLinkError) {
            throw RuntimeException("Cannot create an instance of $modelClass" , e)
        }catch (e : InvocationTargetException){
            Log.e("ViewModelFactory" , "create: ${e.cause}" , );
            e.cause?.printStackTrace()
            throw RuntimeException("Cannot create an instance of $modelClass" , e)
        }
    }

    companion object {
        var sInstance : ViewModelFactory? = null
        val instance : ViewModelFactory?
            get() {
                if (sInstance == null) {
                    sInstance = ViewModelFactory()
                }
                return sInstance
            }
    }
}