package com.example.basecore.base

import androidx.lifecycle.viewModelScope
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.flow.debounce
import kotlinx.coroutines.flow.filter
import kotlinx.coroutines.flow.flow
import kotlinx.coroutines.flow.flowOn
import kotlinx.coroutines.flow.launchIn
import kotlinx.coroutines.flow.onEach
import kotlinx.coroutines.launch


/**
 * 绑定context会泄漏，vm生命周期必定长过activity，需要的时候方法传参即可
 */
open class BaseContextViewModel : BaseViewModel() {

    fun searchFilter(str: String, doSearch: (String) -> Unit) {
        flow { emit(str) }
            .filter {
                it.isNotEmpty()
            }
            .debounce(500)
            .flowOn(Dispatchers.Default)
            .onEach {
                doSearch(it)
            }.flowOn(Dispatchers.Main)
            .launchIn(viewModelScope)
    }


    fun launchOnUI(block: suspend CoroutineScope.() -> Unit) {

        viewModelScope.launch { block() }

    }


}