package com.example.basecore.base
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import androidx.lifecycle.viewModelScope
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import kotlinx.coroutines.CoroutineScope
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import kotlinx.coroutines.Dispatchers
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import kotlinx.coroutines.flow.debounce
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import kotlinx.coroutines.flow.filter
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import kotlinx.coroutines.flow.flow
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import kotlinx.coroutines.flow.flowOn
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import kotlinx.coroutines.flow.launchIn
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import kotlinx.coroutines.flow.onEach
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import kotlinx.coroutines.launch
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/**
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* 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
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*/
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open class BaseContextViewModel : BaseViewModel() {
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fun searchFilter(str: String, doSearch: (String) -> Unit) {
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flow { emit(str) }
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.filter {
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it.isNotEmpty()
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}
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.debounce(500)
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.flowOn(Dispatchers.Default)
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.onEach {
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doSearch(it)
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}.flowOn(Dispatchers.Main)
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.launchIn(viewModelScope)
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}
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fun launchOnUI(block: suspend CoroutineScope.() -> Unit) {
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viewModelScope.launch { block() }
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}
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}
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