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October 28, 2020 07:42
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| package com.gunaya.demo.demomeow.presentation.base | |
| import androidx.lifecycle.MediatorLiveData | |
| import androidx.lifecycle.MutableLiveData | |
| import androidx.lifecycle.ViewModel | |
| import com.gunaya.demo.demomeow.utils.EventWrapper | |
| import com.gunaya.demo.demomeow.utils.SingleLiveEvent | |
| import com.gunaya.demo.demomeow.utils.UseCaseResult | |
| import kotlinx.coroutines.* | |
| import kotlin.coroutines.CoroutineContext | |
| // To avoid writing the same extensions multiple times, we'll make an abstract class for ViewModels | |
| abstract class BaseViewModel : ViewModel(), CoroutineScope { | |
| // Coroutine's background job | |
| private val job = Job() | |
| // Define default thread for Coroutine as Main and add job | |
| override val coroutineContext: CoroutineContext = job + Dispatchers.Main | |
| val loading = MutableLiveData<EventWrapper<Boolean>>() | |
| val error = SingleLiveEvent<String>() | |
| val isLoading = MutableLiveData<Boolean>().apply { value = false } | |
| private val isShowLoading = MutableLiveData<Boolean>().apply { | |
| value = false | |
| } | |
| val isShowDialogLoading = MediatorLiveData<Boolean>().apply { | |
| value = false | |
| addSource(isLoading) { | |
| value = it && isShowLoading.value == true | |
| } | |
| addSource(isShowLoading) { | |
| value = isLoading.value == true && it | |
| } | |
| } | |
| open suspend fun onError(throwable: Throwable) { | |
| withContext(Dispatchers.Main) { | |
| hideLoading() | |
| } | |
| } | |
| open fun showError(e: Throwable) { | |
| error.value = e.message | |
| } | |
| fun showLoading() { | |
| isLoading.value = true | |
| } | |
| fun hideLoading() { | |
| isLoading.value = false | |
| } | |
| fun showDialogLoading(isShow: Boolean) { | |
| showLoading() | |
| isShowLoading.value = isShow | |
| } | |
| fun hideDialogLoading(isShow: Boolean) { | |
| hideLoading() | |
| isShowLoading.value = isShow | |
| } | |
| fun handleError(result: UseCaseResult.DataError<*>) { | |
| error.value = result.data?.error?.errorDescription | |
| error.value = null | |
| } | |
| suspend inline fun <reified T : Any> callAPI( | |
| noinline result: suspend () -> UseCaseResult<T>, | |
| isShowDialogLoading: Boolean = true, | |
| crossinline handleSuccess: (T) -> Unit = {} | |
| ): T? { | |
| return coroutineScope { | |
| var data: T? = null | |
| try { | |
| showDialogLoading(isShowDialogLoading) | |
| when (val response = result.invoke()) { | |
| is UseCaseResult.Success<*> -> { | |
| data = response.data as T | |
| handleSuccess(data) | |
| } | |
| is UseCaseResult.DataError<*> -> { | |
| handleError(response) | |
| data = null | |
| } | |
| } | |
| hideDialogLoading(isShowDialogLoading) | |
| } catch (e: Exception) { | |
| e.printStackTrace() | |
| onError(e) | |
| } | |
| data | |
| } | |
| } | |
| } |
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